文献详情
Karst landform-featured monolithic electrode for water electrolysis in neutral media
文献类型：期刊
通讯作者：Zhang, W; Cao, R (reprint author), Shaanxi Normal Univ, Key Lab Appl Surface & Colloid Chem, Minist Educ, Sch Chem & Chem Engn, Xian 710119, Peoples R China.; Wang, Q (reprint author), Nanjing Tech Univ, Coll Chem & Mol Engn, Nanjing 211816, Peoples R China.; Cao, R (reprint author), Renmin Univ China, Dept Chem, Beijing 100872, Peoples R China.
期刊名称：ENERGY & ENVIRONMENTAL SCIENCE
年：2020
卷：13
期：1
页码：174-182
ISSN：1754-5692
所属部门：化学系
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/alpha-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. ...More
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/alpha-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 similar to 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. ...Hide

DOI：10.1039/c9ee02380a
百度学术：Karst landform-featured monolithic electrode for water electrolysis in neutral media
语言：外文
人气指数：1
浏览次数：1
基金：Starting Research Funds of Shaanxi Normal University; National Natural Science Foundation of ChinaNational Natural Science Foundation of China [21503126, 21573139, 21773146, 21872092]
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