磷化物
电催化剂
材料科学
碳化
析氧
纳米颗粒
化学工程
上部结构
镍
钴
分解水
纳米技术
电化学
碳纤维
催化作用
复合数
化学
电极
复合材料
光催化
冶金
扫描电子显微镜
有机化学
物理化学
工程类
地质学
海洋学
作者
Chun‐Chao Hou,Lianli Zou,Yu Wang,Qiang Xu
标识
DOI:10.1002/anie.202011347
摘要
Superstructures have attracted great interest owing to their potential applications. Herein, we report the first scalable preparation of a porous nickel-foam-templated superstructure of carbon nanosheets decorated with ultrafine cobalt phosphide nanoparticles. Uniform two-dimensional (2D) Co-metal organic framework (MOF) nanosheets (Co-MNS) grow on nickel foam, followed by a MOF-mediated tandem (carbonization/phosphidation) pyrolysis. The resulting superstructure has a porous 3D interconnected network with well-arranged 2D carbon nanosheets on it, in which ultrafine cobalt phosphide nanoparticles are tightly immobilized. A single piece of this superstructure can be directly used as a self-supported electrode for electrocatalysis without any binders. This "one-piece" porous superstructure with excellent mass transport and electron transport properties, and catalytically active cobalt phosphide nanoparticles with ultrasmall size (3-4 nm), shows excellent trifunctional electrocatalytic activities for oxygen evolution reaction (OER), hydrogen evolution reaction (HER), and oxygen reduction reaction (ORR), achieving great performances in water splitting and Zn-air batteries.
科研通智能强力驱动
Strongly Powered by AbleSci AI