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Xiao K, Xiao TQ, Zhang Y, Xie J, Cao M, Li N, Ouyang T, Liu ZQ. In situ evolution of the active phase on stainless steel mesh toward a cost-effective bifunctional electrode for energy storage and conversion. Chem Commun (Camb) 2019; 55:2513-2516. [PMID: 30741277 DOI: 10.1039/c8cc09553a] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Developing low-cost, efficient and stable electrode materials is a major challenge of energy storage and conversion. Here, we report a facile, cost-effective and scaled-up self-sacrificing strategy for transforming commercial stainless steel into highly active and ultrastable electrodes for supercapacitors and the hydrogen evolution reaction. The modified stainless steel displays superior electrochemical activity as well as excellent cycling durability.
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Affiliation(s)
- Kang Xiao
- School of Chemistry and Chemical Engineering, Institute of Clean Energy and Materials, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China.
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Wang YQ, Kabra S, Zhang SY, Truman CE, Smith DJ. An in situ thermo-mechanical rig for lattice strain measurement during creep using neutron diffraction. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2018; 89:055110. [PMID: 29864794 DOI: 10.1063/1.5001085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A long-term high-temperature testing stress rig has been designed and fabricated for performing in situ neutron diffraction tests at the ENGIN-X beamline, ISIS facility in the UK. It is capable of subjecting metals to high temperatures up to 800 °C and uniaxial loading under different boundary conditions including constant load, constant strain, and elastic follow-up, each with minimum of external control. Samples are held horizontally between grips and connected to a rigid rig frame, a soft aluminium bar, and a stepper motor with forces up to 20 kN. A new three zone split electrical resistance furnace which generates a stable and uniform heat atmosphere over 200 mm length was used to heat the samples. An 8 mm diameter port at 45° to the centre of the furnace was made in order to allow the neutron beam through the furnace to illuminate the sample. The entire instrument is mounted on the positioner at ENGIN-X and has the potential ability to operate continuously while being moved in and out of the neutron diffraction beam. The performance of the rig has been demonstrated by tracking the evolution of lattice strains in type 316H stainless steel under elastic follow-up control at 550 °C.
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Affiliation(s)
- Y Q Wang
- Department of Mechanical Engineering, University of Bristol, Bristol BS8 1TR, United Kingdom
| | - S Kabra
- ISIS Neutron Facility, RAL, STFC, Didcot, Oxfordshire OX11 0QX, United Kingdom
| | - S Y Zhang
- ISIS Neutron Facility, RAL, STFC, Didcot, Oxfordshire OX11 0QX, United Kingdom
| | - C E Truman
- Department of Mechanical Engineering, University of Bristol, Bristol BS8 1TR, United Kingdom
| | - D J Smith
- Department of Mechanical Engineering, University of Bristol, Bristol BS8 1TR, United Kingdom
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Balogun MS, Qiu W, Huang Y, Yang H, Xu R, Zhao W, Li GR, Ji H, Tong Y. Cost-Effective Alkaline Water Electrolysis Based on Nitrogen- and Phosphorus-Doped Self-Supportive Electrocatalysts. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29. [PMID: 28681991 DOI: 10.1002/adma.201702095] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 06/07/2017] [Indexed: 05/17/2023]
Abstract
Water splitting into hydrogen and oxygen in order to store light or electric energy requires efficient electrocatalysts for practical application. Cost-effectiveness, abundance, and efficiency are the major challenges of the electrocatalysts. Herein, this paper reports the use of low-cost 304-type stainless steel mesh as suitable electrocatalysts for splitting of water. The commercial and self-support stainless steel mesh is subjected to exfoliation and heteroatom doping processes. The modified stainless steel electrocatalyst displays higher oxygen evolution reaction property than the commercial IrO2 , and comparable hydrogen evolution reaction property with that of Pt. More importantly, an all-stainless-steel-based alkaline electrolyzer (denoted as NESSP//NESS) is designed for the first time, which possesses outstanding stability along with lower overall voltage than the conventional Pt//IrO2 electrolyzer at increasing current densities. The remarkable electrocatalytic properties of the stainless steel electrode can be attributed to the unique exfoliated-surface morphology, heteroatom doping, and synergistic effect from the uniform distribution of the interconnected elemental compositions. This work creates prospects to the utilization of low-cost, highly active, and ultradurable electrocatalysts for electrochemical energy conversion.
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Affiliation(s)
- Muhammad-Sadeeq Balogun
- KLGHEI of Environment and Energy Chemistry, The Key Lab of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, 135 Xingang West Road, Guangzhou, 510275, P. R. China
| | - Weitao Qiu
- KLGHEI of Environment and Energy Chemistry, The Key Lab of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, 135 Xingang West Road, Guangzhou, 510275, P. R. China
| | - Yongchao Huang
- KLGHEI of Environment and Energy Chemistry, The Key Lab of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, 135 Xingang West Road, Guangzhou, 510275, P. R. China
| | - Hao Yang
- KLGHEI of Environment and Energy Chemistry, The Key Lab of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, 135 Xingang West Road, Guangzhou, 510275, P. R. China
| | - Ruimei Xu
- Instrumental Analysis and Research Centre, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Wenxia Zhao
- Instrumental Analysis and Research Centre, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Gao-Ren Li
- KLGHEI of Environment and Energy Chemistry, The Key Lab of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, 135 Xingang West Road, Guangzhou, 510275, P. R. China
| | - Hongbing Ji
- KLGHEI of Environment and Energy Chemistry, The Key Lab of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, 135 Xingang West Road, Guangzhou, 510275, P. R. China
| | - Yexiang Tong
- KLGHEI of Environment and Energy Chemistry, The Key Lab of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, 135 Xingang West Road, Guangzhou, 510275, P. R. China
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