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Zhou Y, Yin H, Li J, Shao K, Dong H, Ling C, Wang X, Xu M. Construction of poly (ionic liquid)-derived gold/silver alloy@nitrogen-doped carbon shell and its application for ratiometric electrochemical detection of nitric oxide. Talanta 2024; 272:125839. [PMID: 38428134 DOI: 10.1016/j.talanta.2024.125839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 01/25/2024] [Accepted: 02/26/2024] [Indexed: 03/03/2024]
Abstract
A nitrogen-doped carbon shell loaded with a gold and silver alloy (Au/Ag@NCS) was constructed for highly sensitive electrochemical detection of NO. The Au/Ag@NCS material was prepared by use of SiO2 particles as a template to polymerize imidazolium-based ionic liquids loaded with gold and silver salts, and subsequent carbonization treatment and template removal. The hollow structure of the carbon material acted as a carrier for electrochemical sensing, offering high specific surface area, large pore capacity, robust electron conductivity, and excellent mechanical stability. The inclusion of gold in the composite enhanced its catalytic and sensing capabilities, while silver oxidation was employed as a reference signal for accurate detection. By utilization of the Au/Ag@NCS-modified electrode, a wide detection range from 0.5 nM to 1.05 μM with a low detection limit of 0.32 nM was achieved for NO detection. The electrochemical sensor also exhibited high selectivity and excellent stability. The fabricated sensor was further utilized to explore the release of NO from breast cancer cells, revealing that the electrochemical platform could be regarded as an important method to study the daily tests of NO in clinical application.
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Affiliation(s)
- Yanli Zhou
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, 476000, China; School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, China.
| | - Hewen Yin
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, China
| | - Junru Li
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, China
| | - Kexian Shao
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, China
| | - Hui Dong
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, 476000, China
| | - Cuixia Ling
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, 476000, China
| | - Xiaobing Wang
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, China
| | - Maotian Xu
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, 476000, China.
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2
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Ge M, Li H, Zhu X, Feng Y, Wang M, Cui D, Yang H, Li S, Zheng J, Ju J, Chen X, Yuan X. Confinement Effects in Carbonized ZIF-Confined Hollow PtCo Nanospheres Enable the Methanol Oxidation Reaction. Inorg Chem 2023; 62:16582-16588. [PMID: 37751364 DOI: 10.1021/acs.inorgchem.3c02519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
Abstract
Confinement effects in highly porous nanostructures can effectively adjust the selectivity and kinetics of electrochemical reactions, which can boost the methanol oxidation reaction (MOR). In this work, carbonized ZIF-8-confined hollow PtCo nanospheres (PtCo@carbonized ZIF-8) were fabricated using a facile strategy. A monodisperse confined region was successfully prepared, and the dispersion of the PtCo nanoparticles (NPs) could be precisely regulated, allowing for the effective tuning of the confined region. Thus, the precise regulation of the catalytic reaction was achieved. Importantly, hollow PtCo NPs were prepared using a method based on the Kirkendall effect, and their forming mechanism was systematically investigated. Because of the confinement effects of carbonized zeolitic imidazolate framework-8 (ZIF-8), the crystal and electronic structures of the PtCo NPs were able to be effectively tuned. Our electrochemical results show that PtCo@carbonized ZIF-8 composites manifest a higher mass activity (1.4 A mgPt-1) and better stability compared to commercial Pt/C.
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Affiliation(s)
- Ming Ge
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Han Li
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Xiaorong Zhu
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Yanjun Feng
- Shanghai Institute of Satellite Engineering, 3666 Yuanjiang Road, Shanghai 201109, P.R. China
| | - Miao Wang
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Ding Cui
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Hu Yang
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Shengming Li
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Jie Zheng
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Jianfeng Ju
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Xiaolei Chen
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Xiaolei Yuan
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
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3
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Zhang C, Chen Z, Zhang H, Liu Y, Wei W, Zhou Y, Xu M. Uniformly Dispersed Sb-Nanodot Constructed by In Situ Confined Polymerization of Ionic Liquids for High-Performance Potassium-Ion Batteries. Molecules 2023; 28:5212. [PMID: 37446874 DOI: 10.3390/molecules28135212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 06/18/2023] [Accepted: 06/29/2023] [Indexed: 07/15/2023] Open
Abstract
Antimony (Sb) is a potential candidate anode for potassium-ion batteries (PIBs) owing to its high theoretical capacity. However; in the process of potassium alloying reaction; the huge volume expansion (about 407%) leads to pulverization of active substance as well as loss of electrical contact resulting in rapidly declining capacity. Herein; uniformly dispersed Sb-Nanodot in carbon frameworks (Sb-ND@C) were constructed by in situ confined polymerization of ionic liquids. Attributed to the uniformly dispersed Sb-ND and confinement effect of carbon frameworks; as anode for PIBs; Sb-ND@C delivered a superior rate capability (320.1 mA h g-1 at 5 A g-1) and an outstanding cycling stability (486 mA h g-1 after 1000 cycles; achieving 89.8% capacity retention). This work offers a facile route to prepare highly dispersed metal-Nanodot via the in situ polymerization of ionic liquid for high-performance metal-ion batteries.
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Affiliation(s)
- Cunliang Zhang
- Henan Key Laboratory of Bimolecular Reorganization and Sensing, Henan Engineering Center of New Energy Battery Materials, School of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Zhengyuan Chen
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Haojie Zhang
- Henan Key Laboratory of Bimolecular Reorganization and Sensing, Henan Engineering Center of New Energy Battery Materials, School of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Yanmei Liu
- Department of Public Science, Shangqiu Medical College, Shangqiu 476000, China
| | - Wei Wei
- Henan Key Laboratory of Bimolecular Reorganization and Sensing, Henan Engineering Center of New Energy Battery Materials, School of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Yanli Zhou
- Henan Key Laboratory of Bimolecular Reorganization and Sensing, Henan Engineering Center of New Energy Battery Materials, School of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Maotian Xu
- Henan Key Laboratory of Bimolecular Reorganization and Sensing, Henan Engineering Center of New Energy Battery Materials, School of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
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4
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Zhang C, Qu P, Zhou M, Qian L, Bai T, Jin J, Xin B. Ionic Liquids as Promisingly Multi-Functional Participants for Electrocatalyst of Water Splitting: A Review. Molecules 2023; 28:molecules28073051. [PMID: 37049827 PMCID: PMC10095915 DOI: 10.3390/molecules28073051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 03/24/2023] [Accepted: 03/27/2023] [Indexed: 04/01/2023] Open
Abstract
Ionic liquids (ILs), as one of the most concerned functional materials in recent decades, have opened up active perspectives for electrocatalysis. In catalyst preparation, ILs act as characteristic active components besides media and templates. Compared with catalysts obtained using ordinary reagents, IL-derived catalysts have a special structure and catalytic performance due to the influence of IL’s special physicochemical properties and structures. This review mainly describes the use of ILs as modifiers and reaction reagents to prepare electrocatalysts for water splitting. The designability of ILs provides opportunities for the ingenious composition of cations or anions. ILs containing heteroatoms (N, O, S, P, etc.) and transition metal anion (FeCl4−, NiCl3−, etc.) can be used to directly prepare metal phosphides, sulfides, carbides and nitrides, and so forth. The special physicochemical properties and supramolecular structures of ILs can provide growth conditions for catalysts that are different from the normal media environment, inducing special structure and high performance. ILs as heteroatom sources are safe, green and easy to operate compared with traditional heteroatom sources. The strategy for using ILs as reagents is expected to realize 100% atomic transformation of reactants, in line with the concept of green chemistry. This review reflects the discovered work with the best findings from the literature. It will offer readers a deeper understanding on the development of IL-derived electrocatalysts and inspire them to ingeniously design high-performance electrocatalysts for water splitting.
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Affiliation(s)
- Chenyun Zhang
- School of Intelligent Manufacturing, Wuxi Vocational College of Science and Technology, Wuxi 214028, China
| | - Puyu Qu
- School of Intelligent Manufacturing, Wuxi Vocational College of Science and Technology, Wuxi 214028, China
| | - Mei Zhou
- School of Intelligent Manufacturing, Wuxi Vocational College of Science and Technology, Wuxi 214028, China
| | - Lidong Qian
- School of Intelligent Manufacturing, Wuxi Vocational College of Science and Technology, Wuxi 214028, China
| | - Te Bai
- School of Intelligent Manufacturing, Wuxi Vocational College of Science and Technology, Wuxi 214028, China
| | - Jianjiao Jin
- School of Intelligent Manufacturing, Wuxi Vocational College of Science and Technology, Wuxi 214028, China
| | - Bingwei Xin
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China
- Correspondence: ; Tel.: +86-136-8534-5517
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5
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Liu Z, Li B, Feng Y, Jia D, Li C, Zhou Y. N-Doped sp 2 /sp 3 Carbon Derived from Carbon Dots to Boost the Performance of Ruthenium for Efficient Hydrogen Evolution Reaction. SMALL METHODS 2022; 6:e2200637. [PMID: 35892250 DOI: 10.1002/smtd.202200637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 07/05/2022] [Indexed: 06/15/2023]
Abstract
The structure and properties of the carrier significantly affect the catalytic activity of the active centers for supported electrocatalysts. Therefore, elaborate design and regulation of the physicochemical properties of carbon carriers are essential to improve the activity and stability of the carbon-supported ruthenium-based catalysts. Herein, enlightened by the unique characteristics of coexisting sp2 and sp3 carbon nuclei in N-doped carbon dots (NCDs), a hybrid structure of N-doped carbon substrates featuring N-doped sp2 /sp3 carbon interfaces loaded with Ru nanoparticles (Ru/NCDs) is obtained. Spectroscopic analysis and density functional theory calculations illustrate that the interaction between Ru and NCDs effectively modulates the electronic structure of the active center Ru, and the formed N-doped sp2 /sp3 carbon interface lowers the energy barrier of the intermediates in hydrogen evolution reaction (HER) and balances the hydrogen adsorption and desorption and, thereby, greatly improves the activity of Ru/NCDs. Remarkably, Ru/NCDs exhibit excellent HER activity and stability in comparison to Pt/C, which merely requires overpotentials as low as 37 and 14 mV at 10 mA cm-2 in alkaline and acidic electrolytes, respectively. This finding will provide more thoughts about the influence of substrate properties on the catalytic activity and rational design of carbon-loaded electrocatalysts.
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Affiliation(s)
- Zonglin Liu
- Institute for Advanced Ceramics, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150001, China
- MIIT Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin, 150001, China
| | - Baoqiang Li
- Institute for Advanced Ceramics, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150001, China
- MIIT Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin, 150001, China
| | - Yujie Feng
- Institute for Advanced Ceramics, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150001, China
| | - Dechang Jia
- Institute for Advanced Ceramics, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150001, China
- MIIT Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin, 150001, China
| | - Caicai Li
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, 311300, China
| | - Yu Zhou
- Institute for Advanced Ceramics, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150001, China
- MIIT Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin, 150001, China
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Chen K, Xu B, Shen L, Shen D, Li M, Guo LH. Functions and performance of ionic liquids in enhancing electrocatalytic hydrogen evolution reactions: a comprehensive review. RSC Adv 2022; 12:19452-19469. [PMID: 35865559 PMCID: PMC9258732 DOI: 10.1039/d2ra02547g] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 06/30/2022] [Indexed: 11/21/2022] Open
Abstract
As a green and renewable energy source, hydrogen can be produced by the electrolysis of water via the hydrogen evolution reaction (HER). Nevertheless, this method requires efficient and low-cost electro-catalysts to improve hydrogen production efficiency. Ionic liquids (ILs), with a unique combination of such superior properties as low vapor pressure, high electrical conductivity, high electrochemical stability, and a wide variety of functional groups, have found applications in electrochemical systems designed for efficient HER. Herein, we provide a comprehensive and updated review on the functions and performance of ILs used in electrochemical systems to enhance the HER. As the name suggests, ILs have been employed either as electrolytes by themselves, or as electrolyte additives. They also played many functional roles in the synthesis of HER electrocatalysts, including as the synthesis reaction solvent, reaction precursor as well as single/dual ion sources, binder and structure-directing agents of the catalysts. With the assistance of ILs, HER efficiency of electrocatalysts was improved significantly, resulting in decreased overpotentials in the range of 16–385 mV @ 10 mA cm−2 and increased Tafel slopes in the range of 30–210 mV dec−1. Lastly, the problems and challenges of ILs in electrocatalytic water electrolysis and HER are also discussed and their prospects considered. Ionic liquids play multi-functions in synthesizing catalysts for HER such as electrolytes/electrolyte additives, reaction solvents, precursors, single/dual ion sources, binders, or morphological structure/phase structure directing agents.![]()
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Affiliation(s)
- Kang Chen
- College of Quality and Safety Engineering, China Jilliang University Hangzhou Zhejiang 310018 China .,Institute of Environmental and Health Sciences, China Jiliang University Hangzhou Zhejiang 310018 China
| | - Bin Xu
- College of Quality and Safety Engineering, China Jilliang University Hangzhou Zhejiang 310018 China .,Institute of Environmental and Health Sciences, China Jiliang University Hangzhou Zhejiang 310018 China
| | - Linyu Shen
- College of Quality and Safety Engineering, China Jilliang University Hangzhou Zhejiang 310018 China .,Institute of Environmental and Health Sciences, China Jiliang University Hangzhou Zhejiang 310018 China
| | - Danhong Shen
- College of Quality and Safety Engineering, China Jilliang University Hangzhou Zhejiang 310018 China .,Institute of Environmental and Health Sciences, China Jiliang University Hangzhou Zhejiang 310018 China
| | - Minjie Li
- College of Quality and Safety Engineering, China Jilliang University Hangzhou Zhejiang 310018 China .,Institute of Environmental and Health Sciences, China Jiliang University Hangzhou Zhejiang 310018 China
| | - Liang-Hong Guo
- College of Quality and Safety Engineering, China Jilliang University Hangzhou Zhejiang 310018 China .,Institute of Environmental and Health Sciences, China Jiliang University Hangzhou Zhejiang 310018 China
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7
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Liang Q, Li Q, Xie L, Zeng H, Zhou S, Huang Y, Yan M, Zhang X, Liu T, Zeng J, Liang K, Terasaki O, Zhao D, Jiang L, Kong B. Superassembly of Surface-Enriched Ru Nanoclusters from Trapping-Bonding Strategy for Efficient Hydrogen Evolution. ACS NANO 2022; 16:7993-8004. [PMID: 35394286 DOI: 10.1021/acsnano.2c00901] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Hydrogen evolution reaction (HER) through water splitting is a potential technology to realize the sustainable production of hydrogen, yet the tardy water dissociation and costly Pt-based catalysts inhibit its development. Here, a trapping-bonding strategy is proposed to realize the superassembly of surface-enriched Ru nanoclusters on a phytic acid modified nitrogen-doped carbon framework (denoted as NCPO-Ru NCs). The modified framework has a high affinity to metal cations and can trap plenty of Ru ions. The trapped Ru ions are mainly distributed on the surface of the framework and can form Ru nanoclusters at 50 °C with the synergistic effect of vacancies and phosphate groups. By adjusting the content of phytic acid, surface-enriched Ru nanoclusters with adjustable distribution and densities can be obtained. Benefiting from the adequate exposure of the active sites and dense distribution of ultrasmall Ru nanoclusters, the obtained NCPO-Ru NCs catalyst can effectively drive HER in alkaline electrolytes and show an activity (at overpotential of 50 mV) about 14.3 and 9.6 times higher than that of commercial Ru/C and Pt/C catalysts, respectively. Furthermore, the great performance in solar to hydrogen generation through water splitting provides more flexibility for wide applications of NCPO-Ru NCs.
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Affiliation(s)
- Qirui Liang
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, iChEM (Collaborative Innovation Centre of Chemistry for Energy Materials), Fudan University, Shanghai 200438, PR China
| | - Qizhen Li
- School of Materials, University of Manchester, Manchester M13 9PL, United Kingdom
| | - Lei Xie
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, iChEM (Collaborative Innovation Centre of Chemistry for Energy Materials), Fudan University, Shanghai 200438, PR China
| | - Hui Zeng
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, iChEM (Collaborative Innovation Centre of Chemistry for Energy Materials), Fudan University, Shanghai 200438, PR China
| | - Shan Zhou
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, iChEM (Collaborative Innovation Centre of Chemistry for Energy Materials), Fudan University, Shanghai 200438, PR China
| | - Yanan Huang
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, iChEM (Collaborative Innovation Centre of Chemistry for Energy Materials), Fudan University, Shanghai 200438, PR China
| | - Miao Yan
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, iChEM (Collaborative Innovation Centre of Chemistry for Energy Materials), Fudan University, Shanghai 200438, PR China
| | - Xin Zhang
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, iChEM (Collaborative Innovation Centre of Chemistry for Energy Materials), Fudan University, Shanghai 200438, PR China
| | - Tianyi Liu
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, iChEM (Collaborative Innovation Centre of Chemistry for Energy Materials), Fudan University, Shanghai 200438, PR China
| | - Jie Zeng
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, iChEM (Collaborative Innovation Centre of Chemistry for Energy Materials), Fudan University, Shanghai 200438, PR China
| | - Kang Liang
- School of Chemical Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Osamu Terasaki
- School of Physical Science and Technology, The Centre for High-Resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, PR China
| | - Dongyuan Zhao
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, iChEM (Collaborative Innovation Centre of Chemistry for Energy Materials), Fudan University, Shanghai 200438, PR China
| | - Lei Jiang
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science Technical Institute of Physics and Chemistry, Chinese Academy of Science, Beijing 100190, PR China
| | - Biao Kong
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, iChEM (Collaborative Innovation Centre of Chemistry for Energy Materials), Fudan University, Shanghai 200438, PR China
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8
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Yu S, Li K, Wang W, Xie Z, Ding L, Kang Z, Wrubel J, Ma Z, Bender G, Yu H, Baxter J, Cullen DA, Keane A, Ayers K, Capuano CB, Zhang FY. Tuning Catalyst Activation and Utilization Via Controlled Electrode Patterning for Low-Loading and High-Efficiency Water Electrolyzers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2107745. [PMID: 35174962 DOI: 10.1002/smll.202107745] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 01/08/2022] [Indexed: 06/14/2023]
Abstract
An anode electrode concept of thin catalyst-coated liquid/gas diffusion layers (CCLGDLs), by integrating Ir catalysts with Ti thin tunable LGDLs with facile electroplating in proton exchange membrane electrolyzer cells (PEMECs), is proposed. The CCLGDL design with only 0.08 mgIr cm-2 can achieve comparative cell performances to the conventional commercial electrode design, saving ≈97% Ir catalyst and augmenting a catalyst utilization to ≈24 times. CCLGDLs with regulated patterns enable insight into how pattern morphology impacts reaction kinetics and catalyst utilization in PEMECs. A specially designed two-sided transparent reaction-visible cell assists the in situ visualization of the PEM/electrode reaction interface for the first time. Oxygen gas is observed accumulating at the reaction interface, limiting the active area and increasing the cell impedances. It is demonstrated that mass transport in PEMECs can be modified by tuning CCLGDL patterns, thus improving the catalyst activation and utilization. The CCLGDL concept promises a future electrode design strategy with a simplified fabrication process and enhanced catalyst utilization. Furthermore, the CCLGDL concept also shows great potential in being a powerful tool for in situ reaction interface research in PEMECs and other energy conversion devices with solid polymer electrolytes.
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Affiliation(s)
- Shule Yu
- Department of Mechanical, Aerospace and Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, TN, 37388, USA
| | - Kui Li
- Department of Mechanical, Aerospace and Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, TN, 37388, USA
| | - Weitian Wang
- Department of Mechanical, Aerospace and Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, TN, 37388, USA
| | - Zhiqiang Xie
- Department of Mechanical, Aerospace and Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, TN, 37388, USA
| | - Lei Ding
- Department of Mechanical, Aerospace and Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, TN, 37388, USA
| | - Zhenye Kang
- Chemistry and Nanoscience Department, National Renewable Energy Lab, Golden, CO, 80401, USA
| | - Jacob Wrubel
- Chemistry and Nanoscience Department, National Renewable Energy Lab, Golden, CO, 80401, USA
| | - Zhiwen Ma
- Chemistry and Nanoscience Department, National Renewable Energy Lab, Golden, CO, 80401, USA
| | - Guido Bender
- Chemistry and Nanoscience Department, National Renewable Energy Lab, Golden, CO, 80401, USA
| | - Haoran Yu
- Center for Nanophase Materials Sciences, Oak Ridge National Lab, Oak Ridge, TN, 37831, USA
| | - Jefferey Baxter
- Center for Nanophase Materials Sciences, Oak Ridge National Lab, Oak Ridge, TN, 37831, USA
| | - David A Cullen
- Center for Nanophase Materials Sciences, Oak Ridge National Lab, Oak Ridge, TN, 37831, USA
| | - Alex Keane
- Nel Hydrogen, Wallingford, CT, 06492, USA
| | | | | | - Feng-Yuan Zhang
- Department of Mechanical, Aerospace and Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, TN, 37388, USA
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9
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Xu J, Kong X. Amorphous/Crystalline Heterophase Ruthenium Nanosheets for pH-Universal Hydrogen Evolution. SMALL METHODS 2022; 6:e2101432. [PMID: 34957700 DOI: 10.1002/smtd.202101432] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Indexed: 06/14/2023]
Abstract
To design and synthesize heterophase noble-metal materials is of crucial importance owing to their unique structure and apparent properties. Ruthenium (Ru) is one of the most active candidates for hydrogen evolution reaction because of its low price compared with other precious metals, which is favorable for industrial hydrogen cycle operation. In this study, free-standing amorphous/crystalline Ru nanosheets are facilely synthesized through a controlled annealing method. Charge redistribution occurs at the phase interface because of the work function difference between amorphous and crystalline domains. The resulting structure and property are conductive to the adsorption and dissociation of water molecules, associated with optimized hydrogen interaction and enhanced binding between Ru atoms. Accordingly, electrochemical measurements demonstrate that the amorphous/crystalline heterophase Ru exhibits improved hydrogen evolution efficiency as compared with pure amorphous Ru and pure crystalline Ru, at pH-universal conditions. Specifically, only 16.7 mV overpotential is required to reach 10 mA cm-2 in 1.0 m KOH. Meanwhile, the heterophase structure displays a higher stability during operation than pure amorphous and crystalline structures. This study demonstrates the importance of phase engineering, broadens the Ru-based material family, and provides more insights for developing efficient metal materials.
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Affiliation(s)
- Jie Xu
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education & Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Huaibei Normal University, Huaibei, Anhui, 235000, China
| | - Xiangkai Kong
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education & Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Huaibei Normal University, Huaibei, Anhui, 235000, China
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