Carbon hybrid with 3D nano-forest architecture in-situ catalytically constructed by CoFe alloy as advanced multifunctional electrocatalysts for Zn-air batteries-driven water splitting

• 作者: Shuguang Wang Jie Wang Xin Wang Long Li Jinwen Qin Minhua Cao
• 来源期刊: 能源化学
• 年，卷（期）: 2021,（2）
• 页码范围: 422-432
• 页数: 11页
• 语种: 英文

摘要

Rational design and facile synthesis of non-noble materials as the effective multifunctional electrocatalysts are still challenging.Herein,a self-catalytically grafted growth approach is developed to construct carbon hybrid with three-dimensional (3D) nano-forest architecture via controlled pyrolysis of metal-polymer nanofiber precursor and melamine.The metal-polymer nanofibers act as the matrix,and mela-mine is used as the initiator for orientated growth of one-dimensional (1D) N-doped carbon nanotubes (N-CNTs) on carbon nanofibers.The as-prepared CoFe-N-CNTs/CNFs-900 possesses unique structure and component advantages in terms of 3D structure,special synapse-like structure,porous feature,high-level N doping and bimetallic active components,which endow the material with structural stability,high mass/electron transport ability and large active sur-/interfaces.Benefiting from the integrated effects of all the above factors,CoFe-N-CNTs/CNFs were successfully applied to overall water splitting and Zn-air batteries.It is believed that this integrated design methodology can be extended to prepare other M-N-C materials for energy-related electrochemical reactions.