Reduced graphene oxide-supported CoP nanocrystals confined in porous nitrogen-doped carbon nanowire for highly enhanced lithium/sodium storage and hydrogen evolution reaction

作     者：Xiaojun Zhao Dan Luo Yan Wang Zhi-Hong Liu 

作者机构：Key Laboratory for Macromolecular Science of Shaanxi ProvinceSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi’an710062China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2019年第12卷第11期

页      面：2872-2880页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：This work was supported by the National Natural Science Foundation of China(No.21573142 and 21903051) the China Postdoctoral Science Foundation(No.2018M643569) the Natural Science Foundation of Shaanxi Province(No.2019JQ-671) the Fundamental Research Funds for the Central Universities(No.GK201903042) 

主　　题：micro-/nanostructured metal-organic framework CoP@NC/rGO lithium/sodium ion batteries hydrogen evolution reaction 

摘      要：Rational synthesis of a hierarchical porous architecture with highly active and consecutive conductive network is very critical to achieve the high-performance of nanomaterials in electrochemical energy conversion and *** propose here a hierarchical micro-/nanostructured hybrids constructed by the dual carbon shell nanowire host containing CoP nanocrystals of several nanometers,which generates Co-based metal-organic framework on graphene oxide nanosheets in situ and followed a direct phosphorization(CoP@NC/rGO).The dual carbon shell,consisting of Co-based metal-organic framework derived porous doped carbon(NC)and reduced graphene oxide(rGO),can not only impedes CoP nanocrystals from coalescing,and renders highly exposed the electrochemically accessible active sites,but also provides the multidimensional pathways for rapid electron and ion *** importantly,the covered dual carbon shell on CoP nanocrystals plays a role as a protective layer to impede the nanocrystals’*** virtue of compositional and structural advantages,the micro-/nanostructured CoP@NC/rGO hybrids manifest outstanding energy storage properties when evaluated as anodes for lithium/sodium ion ***,it also reveals highly efficient electrocatalytic performance for hydrogen evolution reaction in acid media with low Tafel slope,overpotential and robust durability.