过电位
析氧
氢氧化物
分解水
催化作用
材料科学
化学工程
兴奋剂
纳米技术
铜
化学
无机化学
物理化学
电极
电化学
冶金
光电子学
生物化学
光催化
工程类
作者
Xiangmin Fu,Yingying Chen,Tian Wang,Ziwei Li,Ying Lei,Sibudjing Kawi
标识
DOI:10.1016/j.ijhydene.2022.06.141
摘要
Efficient hydrogen production via water splitting is significant because of the zero-carbon emission property. Developing low-cost and highly efficient electrocatalysts for the oxygen evolution reaction (OER), a key half-reaction of water splitting, is critical. Herein, we designed Cu(OH)2@NiCo layered double hydroxide core-shell nanoarray supported on copper foam (CF) with different La doping amount (abbreviated as Cu(OH)2@NiCoLa LDH/CF) via the facile electrodeposition method. Owing to the synergistic effect between La and NiCo LDH by electronic structure tuning, Cu(OH)2@NiCoLa LDH/CF shows excellent OER performance with the lowest overpotential of 254 mV to drive the current density of 10 mA cm−2 and outstanding long-term durability for 24 h. The idea of doping rare-earth metal into non-noble NiCo-based LDHs core-shell nanoarray structure in this work can inspire the design of other efficient electrocatalysts.
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