Cobalt-embedded few-layered carbon nanosheets toward enhanced hydrogen evolution: Rational design and insight into structure-performance correlation

• 作者: Liwen Xing Hongyi Gao Dandan Jia Xiao Chen Mengyi Han Junjun Lv Ang Li Ge Wang Xingtian Shu
• 来源期刊: 能源化学
• 年，卷（期）: 2021,（7）
• 页码范围: 156-161
• 页数: 6页
• 语种: 英文

摘要

Over the past decades, the energy and concomitant environment issues, such as energy shortage, air pollution and global warming, have been becoming increasingly striking world-wide challenges [1,2].Such a dilemma in turn appeals to the development and employment of clean and renewable energy.Especially,the large-scale acquisition of hydrogen resources supply from the water splitting electrolyzer, will provide a promising scenario to confront such crises in the near future [3].However, the practical application of electrocatalytic hydrogen evolution reaction (HER) is still limited to the excessive dependence on the Pt-group metal (e.g.platinum and Pt/C) that is yet scarce and high cost.In this regard, it is highly urgent to develop robust and cost-effective potential alternatives to precious-metal-based electrocatalysts for sustainable hydrogen production.Among the numerous non-noble metal-based HER electrocatalysts [4-6], transition metalbearing carbon-based composite materials [7-9] have attracted intensive attention due to the low price, rich earth abundance,good conductivity, corrosion resistance and structural diversity.For those electrocatalysts, it is generally recognized that the metal species act as catalytically active sites and carbon matrix serves as supports to maintain the whole system during the catalytic process [10].