材料科学
氢氧化物
分解水
催化作用
铂金
镍
无定形固体
无机化学
双功能
析氧
电子转移
介孔材料
化学工程
结晶学
物理化学
冶金
电极
有机化学
化学
工程类
光催化
电化学
作者
Xinyi Zhang,Yi Han,Wenwen Cai,Dan Zhang,Zuochao Wang,Hongdong Li,Yan Sun,Yanyun Zhang,Jianping Lai,Lei Wang
标识
DOI:10.1002/admi.202102154
摘要
Abstract The development of efficient and stable bifunctional catalysts to meet overall water splitting at high current densities is attractive, but also challenging. Here, a simple one‐step chloride ion etching method to in situ synthesis of platinum (Pt) clusters anchored on amorphous nickel molybdenum hydroxide/nickel foam nanosheets (Pt‐NiMo‐OH/NF) at room temperature is used. Pt‐NiMo‐OH/NF has better catalytic activity for hydrogen evolution and oxygen evolution (OER) than Pt/C/NF and RuO 2 /NF. The overall water splitting required only 1.83 V versus RHE to reach 1000 mA cm −2 , and showed good stability and catalytic activity in 160 h. The excellent catalytic performance and stability of Pt‐MiMo‐OH/NF may be due to the collaborative electron transfer between Pt and amorphous NiMo‐OH leads to an increase in the electron density of Pt clusters, which optimizes the binding energy of Pt and H. At the same time, it induces the formation of high‐valence Ni and Mo, thereby promoting the dissociation of water and the production of OER active substances. This work provides a novel strategy for the synthesis of water splitting catalysts at high current density.
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