Trimetallic synergistic optimization of 0D NiCoFe-P QDs anchoring on 2D porous carbon for efficient electrocatalysis and high-energy supercapacitor

作     者：Ruiqi Liu Xue-Rong Shi Yi Wen Xiaoxuan Shao Chen Su Jing Hu Shusheng Xu Ruiqi Liu;Xue-Rong Shi;Yi Wen;Xiaoxuan Shao;Chen Su;Jing Hu;Shusheng Xu

作者机构：School of Materials EngineeringShanghai University of Engineering ScienceShanghai 201620China School of Advanced Materials and NanotechnologyXidian UniversityXi’an 710071ShaanxiChina School of Materials Science and EngineeringSuzhou University of Science and TechnologySuzhou 215009JiangsuChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2022年第31卷第11期

页      面：149-158,I0006页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：financially supported by the National Natural Science Foundation of China(Grant No.21703137) the Starting Research Funds of Xidian University(Grant No.XJS211403) the Shanghai Sailing Program(Grant No.20YF1416100)。 

主　　题：Metal-organic frameworks Transition metal phosphide quantum dots 0D/2D heterostructure Overall water splitting Supercapacitor First-principle calculations 

摘      要：Developing multi-functional and low-cost noble-metal-free catalysts such as transition metal phosphides(TMPs)to replace noble-metal is of practical significance for energy conversion and storage.However,the low-durability and the agglomeration phenomenon during the electrochemical process limit their practical applications.Herein,using metal–organic frameworks(MOFs)as the precursor and a combined strategy of gradient temperature calcination and thermal phosphorization,a 0D/2D heterostructure of NiCoFe-P quantum dots(QDs)anchored on porous carbon was successfully developed as highly efficient electrode materials for overall water splitting and supercapacitors.Owing to this distinctive 0D/2D heterostructure and the synergistic effect of multi-metallic TMPs,the NiCoFe-P/C exhibits excellent electrocatalytic activity and durability of HER(87 mV at 10 mA cm^(-2))and OER(257 mV at 100 mA cm^(-2))in the KOH electrolyte.When NiCoFe-P/C is used as the two electrodes of electrolyzed water,only 1.55 V can drive the current density to 10 m A cm^(-2).At the same time,our NiCoFe-P/C possessed extraordinary property for charge storage.In particular,an ultra-high energy density of 100.8 Wh kg^(-1) was achieved at a power density of 900.0 W kg^(-1) for our assembled hybrid supercapacitor device NiCoFe-P/C(2:1)//activated carbon(AC).This work may open a potential way for the design of 0D/2D hybrid multifunctional nanomaterials based on TMPs QDs.