电催化剂
异质结
析氧
材料科学
分解水
催化作用
纳米技术
镍
化学工程
电化学
光催化
电极
光电子学
化学
物理化学
有机化学
冶金
工程类
作者
Jianwei Nai,Xiangzhen Xu,Qifan Xie,Gongxun Lu,Yao Wang,Deyan Luan,Xinyong Tao,Xiong Wen Lou
标识
DOI:10.1002/adma.202104405
摘要
Abstract Exploiting effective electrocatalysts based on elaborate heterostructures for the oxygen evolution reaction (OER) has been considered as a promising strategy for boosting water splitting efficiency to produce the clean energy—hydrogen. However, constructing catalytically active heterostructures with novel composition and architecture remains poorly developed due to the synthetic challenge. In this work, it is demonstrated that unique Ni(CN) 2 /NiSe 2 heterostructures, composed of single‐crystalline Ni(CN) 2 nanoplates surrounded by crystallographically aligned NiSe 2 nanosatellites, can be created from nickel‐based Hofmann‐type coordination polymers through stepwise topochemical pathways. When employed as the OER electrocatalyst, the Ni(CN) 2 /NiSe 2 heterostructures show enhanced performance, which could be attributed to optimized geometric and electronic structures of the catalytic sites endowed by the synergy between the two components. This work demonstrates a rational synthetic route for creating a novel Ni‐based OER electrocatalyst that possesses nanoscale heterostructure, whose composition, spatial organization, and interface configuration can be finely manipulated.
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