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DOI | 10.1039/c9ee02380a |
Karst landform-featured monolithic electrode for water electrolysis in neutral media | |
Gao X.; Chen Y.; Sun T.; Huang J.; Zhang W.; Wang Q.; Cao R. | |
发表日期 | 2020 |
ISSN | 1754-5692 |
起始页码 | 174 |
结束页码 | 182 |
卷号 | 13期号:1 |
英文摘要 | The development of cheap and efficient electrodes for water splitting is an ongoing challenge. Herein, a nickel foam-based monolithic electrode is reported with high performance for both hydrogen and oxygen evolution reactions in neutral media. The karst landform-featured electrode consists of metallic Ni in the valley areas and Ni/α-Ni(OH)2 heterostructures as towers on the surface. Remarkably, the electrode can switch between HER and OER reversibly and flexibly with long-term viability. Scanning electrochemical microscopy (SECM) analysis and computational studies proved the vital roles of the karst landform structure and the interface of the heterostructure in its efficient bifunctionality. Combined with a common photovoltaic cell, a water electrolysis cell with the bifunctional electrode can implement splitting of natural seawater (pH ∼ 8.0) with a high solar-to-hydrogen (STH) conversion efficiency of 16.5%. This cheap, flexible, robust, easily obtained and bifunctional electrode has potential applications for water splitting in the hydrogen economy. © 2020 The Royal Society of Chemistry. |
语种 | 英语 |
scopus关键词 | Electrodes; Electrolysis; Photoelectrochemical cells; Photovoltaic cells; Scanning electron microscopy; Scanning probe microscopy; Solar power generation; Bifunctional electrodes; Computational studies; Hydrogen economy; Long-term viability; Oxygen evolution reaction; Scanning electrochemical microscopy; Solar-to-hydrogen conversions; Water electrolysis; Landforms; electrode; electrokinesis; foam; hydrolysis; karst; nickel; oxygen; seawater |
来源期刊 | Energy and Environmental Science |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/162465 |
作者单位 | Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China; Bruker (Beijing) Scientific Technology Co., Ltd, Beijing, 100192, China; College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China; Department of Chemistry, Renmin University of China, Beijing, 100872, China |
推荐引用方式 GB/T 7714 | Gao X.,Chen Y.,Sun T.,et al. Karst landform-featured monolithic electrode for water electrolysis in neutral media[J],2020,13(1). |
APA | Gao X..,Chen Y..,Sun T..,Huang J..,Zhang W..,...&Cao R..(2020).Karst landform-featured monolithic electrode for water electrolysis in neutral media.Energy and Environmental Science,13(1). |
MLA | Gao X.,et al."Karst landform-featured monolithic electrode for water electrolysis in neutral media".Energy and Environmental Science 13.1(2020). |
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