Tungsten carbide nanowalls as electrocatalyst for hydrogen evolution reaction: New approach to durability issue

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• 作者：Young-Jin Ko^a ; ^b ; Jung-Min Cho^a ; ^b ; Inho Kim^a ; Doo Seok Jeong^a ; Kyeong-Seok Lee^a ; Jong-Keuk Park^a ; Young-Joon Baik^a ; Heon-Jin Choi^b ; ^{hjc@yonsei.ac.kr} ; Wook-Seong Lee^a ; ^{wsleemk@gmail.com}
• 关键词：Hydrogen evolution ; Tungsten carbide ; Nanowall structure ; Electrochemical durability ; Turnover frequency
• 刊名：Applied Catalysis B: Environmental
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：203
• 期：Complete
• 页码：684-691
• 全文大小：2805 K
• 卷排序：203

文摘

We demonstrate the drastic enhancement in the durability of the tungsten carbide electrocatalyst by microstructural change. No further oxide passivation was observed upto 10,000 cycling after removal of initial oxide passivation layer on the WC nanowall electrocatalyst. The excellent durability was attributed to its crystalline perfection and the atomically smooth surface.