High electrocatalytic hydrogen evolution activity on a coupled Ru and CoO hybrid electrocatalyst

查看全文 作　　者：Jia-Xin [1]Guo;Dong-Yang [1]Yan;Kang-Wen [1]Qiu;Chuan [1]Mu;Dian [1]Jiao;Jing [1]Mao;Hui [2]Wang;Tao [1]Ling

机构地区：[1]Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education,Tianjin Key Laboratory of Composite and Functional Materials,School of Materials Science and Engineering,Tianjin University,Tianjin 300072,China;[2]Key Laboratory of Aerospace Materials and Performance(Ministry of Education),School of Materials Science and Engineering,Beihang University,Beijing 100191,China

出　　处：《Journal of Energy Chemistry》索引2019年第28卷第10期,共5页

基　　金：supported by the National Science Fund for Excellent Young Scholars (51722103);the Natural Science Foundation of China (51571149) 摘　　要：Hydrogen evolution reaction (HER) is an essential step in converting renewable energy to clean hydrogen fuel. Exploring highly efficient, stable and cost-effective electrocatalysts is of crucial significance for sustainable HER. Here, we report the design of a coupled ruthenium/cobalt oxide (Ru/CoO) hybrid electrocatalyst for alkaline HER. In this hybrid metal/oxide system, the complicated alkaline HER pathways are overall facilitated;oxygen (O)-vacancy-abundant oxide enhances water splitting and Ru promotes successive hydrogen intermediates to generate hydrogen. The resulting Ru/CoO hybrid electrocatalyst exhibits significantly promoted catalytic activity compared with benchmark Ru catalyst, displaying an overpotential of 55 mV to generate a HER current density of 10 mA cm^-2, comparable with the state-of-the-art Pt/C catalyst and the most efficient alkaline HER electrocatalysts. Furthermore, the strong interaction of Ru nanoparticles with oxide support and the in-situ growth of oxide support on conductive substrate guarantee the long-term stability of as-fabricated Ru/CoO hybrid electrocatalyst. This newly designed hybrid catalyst with abundant metal/oxide interfaces may pave a new pathway for exploring efficient and stable HER electrocatalysts. 关键词：RUTHENIUM OXIDES HYBRID ELECTROCATALYST Hydrogen evolution reaction

相关文献

参考文献（36）
引证文献（4）
耦合文献（0）

参考文献(36)

引证文献(4)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

High electrocatalytic hydrogen evolution activity on a coupled Ru and CoO hybrid electrocatalyst

参考文献(36)

引证文献(4)

用户提示