气候变化领域集成服务门户(CCPortal): Karst landform-featured monolithic electrode for water electrolysis in neutral media

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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	17545692
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.
英文关键词	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
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189759
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 & Environmental Science,13(1).
MLA	Gao X.,et al."Karst landform-featured monolithic electrode for water electrolysis in neutral media".Energy & Environmental Science 13.1(2020).