Activation of lattice oxygen by loading NiFeP nanoparticles on nitrogen-doped porous carbon to enhance OER activity
Yana Hu, Baoshou Shen, Wenyao Liu, Yajuan Pan, Jiuling Huang, Xiaoli Zhu, Zhongming Guo, Yongliang Cheng, Jianhua Xiao, Jianjun Qu
Abstract
The construction of efficient and cost-effective OER electrocatalysts is important for promoting hydrogen production by electrolysis of water. Nitrogen-doped 3D porous carbon materials are prepared by ammonia annealing. Subsequently, NiFeP nanoparticles are loaded on the nitrogen-doped carbon materials to form NiFeP/NC hybrids. Electrochemical tests in alkaline electrolytes show that the overpotential of NiFeP/NC is 241 mV at 10 mA cm −2 . Experiments illustrate that NiFeP/NC follows the LOM pathway for the oxygen evolution reaction. This work provides new ideas for developing high-performance carbon-based OER catalysts based on the LOM pathway, which has great potential for application in the catalytic field.