Phosphide-oxide honeycomb-like heterostructure CoP@CoMoO_4/CC for enhanced hydrogen evolution reaction in alkaline solution
Phosphide-oxide honeycomb-like heterostructure CoP@CoMoO_4/CC for enhanced hydrogen evolution reaction in alkaline solution
复制标题
磷氧化物蜂窝状异质结构CoP@CoMoO_4/CC用于增强碱性溶液中的析氢反应
DOI：
10.1016/j.jmst.2019.12.013
复制
发表时间：
2020
影响因子：
10.9
通讯作者：
Shi Changsheng
中科院分区：
文献类型：
--
作者：
Liu Zheng;Wang Jieqiong;Zhan Changhong;Yu Jing;Cao Yang;Tu Jinchun;Shi Changsheng
高效稳定的析氢反应(HER)催化剂的设计和构建是经济地获取氢能的关键。过渡金属磷化物(TMPS)因其独特的催化机理而引起人们的广泛关注，这与氢气的催化机理相似。但单相TMPS在碱性溶液中活性低，稳定性差，因此受到了限制。在本工作中，过渡金属磷化物(TMPS)因其独特的催化机理而受到人们的广泛关注。用水热法在碳布(CC)上合成了具有磷化物和氧化物异质结构的CoP@CoMoO4纳米片，并在管式炉中与红磷反应。CoP和CoMoO4之间的协同作用提高了HER的活性和稳定性。CoP@CoMoO4/CC异质结构表现出优异的HER活性，在10 mA cm-2处的过电势为89 mV，Tafel斜率为69 mV dec-1，与单相磷化物相比具有良好的稳定性。本研究为制备廉价、高活性、高耐久的磷基催化剂提供了一种新的途径。
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@CoMoO_4 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 CoMoO_4 enhanced the HER activity and stability in alkaline solution.The CoP@CoMoO_4/CC heterostructure exhibited excellent HER activity with a low overpotential of 89mV at 10mA cm~(–2)with Tafel slope of 69mV 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.