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Improved hydrogen evolution at high temperature using an electro-thermal method
Li, Tinghua1; Kang, Shuai2; Zhang, Xia1; Fu, Xie2; Feng, Shuanglong2; Hu, Zhuofeng3; Zhu, Donglai1; Lu, Wenqiang2
2020-04-29
摘要Numerous efficient catalysts have been introduced towards hydrogen evolution to produce H-2 via water electrolysis. Besides developing highly active catalysts, considerable efforts should be focused on the reaction condition to accelerate electrochemical reactions. Increasing the operating temperature enhances the performances. Here, we demonstrate that a combination of a mature electro-thermal system with the state-of-art water splitting cells can promote hydrogen production efficiency in acid water. In particular, the current density of carbon coated Ag wire increased 12 mA cm(-2) at elevated temperatures in comparison with room temperature. This heat-induced current increase was six times of Ag wire without carbon coating. The hydrogen evolution improvement is attributed to a better heat distribution in the micro-region between carbon surface and electrolyte. Graphitized carbon in the carbon layer, offers electron transfer pathways, which is beneficial for hydrogen evolution reaction performance; amorphous carbon and layered structure locked electrolyte, stop acid-water flowing and preserves heat.
关键词hydrogen evolution electro-thermal method elevated temperature acidic water carbon
DOI10.1088/1361-6463/ab732b
发表期刊JOURNAL OF PHYSICS D-APPLIED PHYSICS
ISSN0022-3727
卷号53期号:18页码:9
通讯作者Zhu, Donglai(zhudl@ynzy-tobacco.com)
收录类别SCI
WOS记录号WOS:000521369000001
语种英语