Phosphide-oxide honeycomb-like heterostructure CoP@CoMoO4/CC for enhanced hydrogen evolution reaction in alkaline solution
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2020年第11期
论文作者：Zheng Liu Jieqiong Wang Changhong Zhan Jing Yu Yang Cao Jinchun Tu Changsheng Shi
文章页码：177 - 184
摘 要：The design and construction of effective and stable hydrogen evolution reaction（HER） catalysts represent the key to obtaining hydrogen energy economically. Transition metal phosphides（TMPs） have attracted considerable attention due to their unique catalytic mechanism, which is similar to hydrogenase. However, single-phase TMPs remain limited by their low activity and weak stability in alkaline solutions.In this work, CoP@CoMoO4 nanosheets with phosphide and oxide heterostructure were synthesized on carbon cloth（CC） through hydrothermal method and subsequently reacted with red phosphorus in a tube furnace. The outstanding synergy between CoP and CoMoO4 enhanced the HER activity and stability in alkaline solution. The CoP@CoMoO4/CC heterostructure exhibited excellent HER activity with a low overpotential of 89 mV at 10 mA cm-2 with Tafel slope of 69 mV dec-1, and outstanding stability when compared with single-phase phosphides. Our present research provides a new approach for the preparation of inexpensive, highly active, and highly durable phosphorus-based catalyst for HER.
Zheng Liu1，Jieqiong Wang1，Changhong Zhan1，Jing Yu1，Yang Cao1,2，Jinchun Tu1，Changsheng Shi1
1. State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, School of Science, Hainan University2. Qiongtai Normal University
摘 要：The design and construction of effective and stable hydrogen evolution reaction（HER） catalysts represent the key to obtaining hydrogen energy economically. Transition metal phosphides（TMPs） have attracted considerable attention due to their unique catalytic mechanism, which is similar to hydrogenase. However, single-phase TMPs remain limited by their low activity and weak stability in alkaline solutions.In this work, CoP@CoMoO4 nanosheets with phosphide and oxide heterostructure were synthesized on carbon cloth（CC） through hydrothermal method and subsequently reacted with red phosphorus in a tube furnace. The outstanding synergy between CoP and CoMoO4 enhanced the HER activity and stability in alkaline solution. The CoP@CoMoO4/CC heterostructure exhibited excellent HER activity with a low overpotential of 89 mV at 10 mA cm-2 with Tafel slope of 69 mV dec-1, and outstanding stability when compared with single-phase phosphides. Our present research provides a new approach for the preparation of inexpensive, highly active, and highly durable phosphorus-based catalyst for HER.
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