八面体
自旋态
析氧
材料科学
自旋(空气动力学)
贵金属
纳米技术
多面体
化学物理
化学工程
化学
金属
结晶学
无机化学
物理化学
电极
电化学
晶体结构
物理
冶金
几何学
工程类
热力学
数学
作者
Youwen Liu,Chong Xiao,Mengjie Lyu,Yue Lin,Weizheng Cai,Pengcheng Huang,Tong Wei,Yousheng Zou,Yi Xie
标识
DOI:10.1002/anie.201505320
摘要
Abstract Development of efficient and affordable electrocatalysts in neutral solutions is paramount importance for the renewable energy. Herein, we report that the oxygen evolution reaction (OER) performance of Co 3 S 4 under neutral conditions can be enhanced by exposed octahedral planes and self‐adapted spin states in atomically thin nanosheets. A HAADF image clearly confirmed that the active octahedra with Jahn–Teller distortions were exposed exclusively. Most importantly, in the atomically thin nanosheets, the spin states of Co 3+ in the octahedral self‐adapt from low‐spin to high‐spin states. As a result, the synergistic effect endow the Co 3 S 4 nanosheets with superior OER performance, with exceptional low onset overpotentials of circa 0.31 V in neutral solutions, which is state‐of‐the‐art among inorganic non‐noble metal compounds.
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