析氧
电催化剂
材料科学
密度泛函理论
吸附
吸收光谱法
氧气
碳纤维
电化学
化学物理
兴奋剂
化学工程
物理化学
计算化学
电极
化学
光电子学
有机化学
复合数
物理
工程类
量子力学
复合材料
作者
Huabin Zhang,Yanyu Liu,Tao Chen,Jintao Zhang,Jing Zhang,Xiong Wen David Lou
标识
DOI:10.1002/adma.201904548
摘要
Abstract Exploring highly efficient electrocatalysts for the oxygen evolution reaction (OER) and unveiling their activity origin are pivotal for energy conversion technologies. Herein, atomically distributed Ni sites over a N‐doped hollow carbon matrix are reported as a promising electrocatalyst for OER in alkaline conditions. Significantly boosted activity is observed after the decoration of the active Ni sites with well‐controlled coordination geometry. Results of X‐ray absorption spectroscopy investigation and density functional theory (DFT) calculation reveal that the effective electronic coupling via the Ni–N coordination can move down the Fermi level and lower the adsorption energy of intermediates, thus resulting in the facilitated OER kinetics.
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