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Mushtaq M, Zhu Z, Yang H, Khanam Z, Hu YW, Mathi S, Wang Z, Balogun MS, Huang Y. Lattice Strain-Modulated Trifunctional CoMoO 4 Polymorph-Based Electrodes for Asymmetric Supercapacitors and Self-Powered Water Splitting. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2025; 21:e2409418. [PMID: 39806832 DOI: 10.1002/smll.202409418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2024] [Revised: 12/21/2024] [Indexed: 01/16/2025]
Abstract
Developing efficient, multifunctional electrodes for energy storage and conversion devices is crucial. Herein, lattice strains are reported in the β-phase polymorph of CoMoO4 within CoMoO4@Co3O4 heterostructure via phosphorus doping (P-CoMoO4@Co3O4) and used as a high-performance trifunctional electrode for supercapacitors (SCs), hydrogen evolution reaction (HER), and oxygen evolution reaction (OER) in alkaline electrolytes. A tensile strain of +2.42% on the β-phase of CoMoO4 in P-CoMoO4@Co3O4 results in superior electrochemical performance compared to CoMoO4@Co3O4. The optimized P-CoMoO4@Co3O4 achieves a high energy density of 118 Wh kg-1 in an asymmetric supercapacitor and low overpotentials of 189 mV for the HER and 365 mV for the OER at a current density of 500 mA cm-2. This results in a low overall water splitting voltage of 1.71 V at the same current density making it an effective bifunctional electrode in a 1 m KOH freshwater electrolyte. Theoretical analysis shows that the excellent performance of P-CoMoO4@Co3O4 can be attributed to interfacial interactions between CoMoO4 and Co3O4, and the β-phase of CoMoO4, which lead to strong OH- adsorption and low energy barriers for reaction intermediates. Practical application is demonstrated by using P-CoMoO4@Co3O4-based ASCs to self-generate hydrogen (H2) in a P-CoMoO4@Co3O4||P-CoMoO4@Co3O4 alkaline seawater electrolyzer, showcasing its potential for future energy technologies.
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Affiliation(s)
- Muhammad Mushtaq
- College of Materials Science and Engineering, Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy, Hunan University, Changsha, 410082, P. R. China
| | - Zhixiao Zhu
- College of Materials Science and Engineering, Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy, Hunan University, Changsha, 410082, P. R. China
| | - Hao Yang
- School of Chemistry & Chemical Engineering, Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, Guangxi University, Nanning, 530004, P. R. China
| | - Zeba Khanam
- College of Materials Science and Engineering, Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy, Hunan University, Changsha, 410082, P. R. China
| | - Yu-Wen Hu
- College of Materials Science and Engineering, Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy, Hunan University, Changsha, 410082, P. R. China
| | - Selvam Mathi
- College of Materials Science and Engineering, Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy, Hunan University, Changsha, 410082, P. R. China
| | - Zhongmin Wang
- Guangxi Academy of Sciences, Nanning, Guangxi, 530007, P. R. China
| | - M-Sadeeq Balogun
- College of Materials Science and Engineering, Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy, Hunan University, Changsha, 410082, P. R. China
- Guangxi Academy of Sciences, Nanning, Guangxi, 530007, P. R. China
- Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin, 541004, P. R. China
| | - Yongchao Huang
- Institute of Environmental Research at Greater Bay, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou, 510006, P. R. China
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Li H, Yang Z, Jiang W, Wang Z, Fu Z, Xu Y, Meng Y, Wang M, Sun W, Zhao D, Wang F, Jiang Z. Fe
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Heterostructured Microspheres as an Anode Material for Long‐Life and High‐Performance Lithium Storage. ChemElectroChem 2021. [DOI: 10.1002/celc.202101168] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Haifeng Li
- School of Chemistry and Materials Science Ludong University Yantai 264025 P. R. China
| | - Zhenglong Yang
- School of Chemistry and Materials Science Ludong University Yantai 264025 P. R. China
| | - Wei Jiang
- School of Chemistry and Materials Science Ludong University Yantai 264025 P. R. China
| | - Zhenhao Wang
- School of Chemistry and Materials Science Ludong University Yantai 264025 P. R. China
| | - Zhenyu Fu
- School of Chemistry and Materials Science Ludong University Yantai 264025 P. R. China
| | - Yanbin Xu
- School of Chemistry and Materials Science Ludong University Yantai 264025 P. R. China
| | - Yanfeng Meng
- School of Chemistry and Materials Science Ludong University Yantai 264025 P. R. China
| | - Mengyu Wang
- School of Chemistry and Materials Science Ludong University Yantai 264025 P. R. China
| | - Wenjuan Sun
- School of Chemistry and Materials Science Ludong University Yantai 264025 P. R. China
| | - Deyang Zhao
- School of Chemistry and Materials Science Ludong University Yantai 264025 P. R. China
| | - Feng Wang
- School of Chemistry and Materials Science Ludong University Yantai 264025 P. R. China
| | - Ziqiao Jiang
- School of Chemistry and Materials Science Ludong University Yantai 264025 P. R. China
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