文献类型：期刊文献

英文题名：Synergistic effects of Ni2P/Ni5P4 heterostructure and N-doped carbon for enhanced asymmetric supercapacitor performance

作者：Lin, Minyi Hu, Ting Qiu, Wei Fu, Yuanxiang Wu, Yongbo Luo, Yuhong Lin, Xiaoming

第一作者：Lin, Minyi

通信作者：Fu, YX[1];Fu, YX[2];Luo, YH[3];Lin, XM[3]

机构：[1]Guizhou Inst Technol, Sch Chem Engn, Guiyang 550025, Peoples R China;[2]Guizhou Inst Technol, Key Lab Energy Chem Higher Educ Inst Guizhou Prov, Guiyang 550025, Peoples R China;[3]South China Normal Univ, Sch Chem, Guangzhou 510006, Peoples R China;[4]South China Normal Univ, Guangdong Basic Res Ctr Excellence Struct & Fundam, Key Lab Atom & Subatom Struct & Quantum Control, Minist Educ,Sch Phys, Guangzhou 510006, Peoples R China;[5]South China Normal Univ, Guangdong Prov Key Lab Quantum Engn & Quantum Mat, Guangdong Hong Kong Joint Lab Quantum Matter, Guangzhou 510006, Peoples R China

第一机构：贵州理工学院化学工程学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Chem Engn, Guiyang 550025, Peoples R China;corresponding author), Guizhou Inst Technol, Key Lab Energy Chem Higher Educ Inst Guizhou Prov, Guiyang 550025, Peoples R China;corresponding author), South China Normal Univ, Sch Chem, Guangzhou 510006, Peoples R China.|贵州理工学院;贵州理工学院化学工程学院;

年份：2026

卷号：536

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20261420437949);Scopus(收录号：2-s2.0-105034726717);WOS:【SCI-EXPANDED(收录号:WOS:001740320400001)】；

基金：We gratefully acknowledge the financial support from the National Natural Science Foundation of China (52502252) , Guangdong Provin-cial Key Laboratory of Carbon Dioxide Resource Utilization (No. 2024B1212010011) , the High-level Talent Scientific Research Startup Project of the Guizhou Institute of Technology (2023GCC021) , and Key Laboratory of Energy Chemistry in Guizhou universities (Qian Jiao Ji [2022] 035) , and South China Normal University Young Faculty Research Development Fund (672192) . Furthermore, the author would like to thank Scientific Compass ( www.shiyanjia.com ) for the TEM test.

语种：英文

外文关键词：Transition metal phosphides; Metal-organic framework; Synergistic effect; Supercapacitor electrodes

摘要：Developing high-performance supercapacitor electrode materials is crucial for meeting the growing demand for energy storage. Metal-organic framework (MOF) derived phosphides have attracted significant attention due to their unique structure and excellent electrochemical activity. In this study, Ni-BTC (Trimesitinic acid) precursors were prepared via hydrothermal method, followed by carbonization at 600 degrees C and phosphorization at different temperatures, successfully synthesizing novel nickel-based phosphide composite materials (NCPB). Crucially, by systematically modulating the organic ligand from BTC to BDC (terephthalic acid) and ZIF (2-methylimidazole), we achieved precise control over the Ni2P/Ni5P4 dual-phase ratio in the resulting derivatives (NCPB 500, NCPD 500, and NCPZ 500). Among these, the use of the nitrogen-containing ZIF ligand (2-methylimidazole) not only optimized the Ni5P4 phase proportion (56.15%) to maximize heterointerface density, but also simultaneously introduced nitrogen doping into the carbon matrix, yielding a unique Ni2P/Ni5P4@N-C composite architecture. XRD and HRTEM confirmed the existence of Ni2P/Ni5P4 dual-phase heterojunction structure, while EDS elemental mapping showed uniform distribution of Ni, P, N, and C elements. Benefiting from the synergistic effects of the ligand-optimized dual-phase heterojunction (abundant active sites and accelerated interfacial charge transfer) and the N-doped carbon matrix (enhanced conductivity and surface wettability), the optimal NCPZ 500 material achieved a specific capacitance of 1131 F g-1 at 1 A g-1. An asymmetric supercapacitor (NCPZ 500//AC ASC) assembled using NCPZ 500 as the positive electrode and activated carbon (AC) as the negative electrode demonstrated excellent electrochemical performance: the ASC device could operate stably within a wide voltage window of 0-1.6 V, with an energy density reaching 30.4 W h kg-1 (corresponding to a power density of 820 W kg-1), and could maintain an energy density of 22.3 W h kg-1 even at a high power density of 3200 W kg-1. These results demonstrate that ligand-mediated precise tuning of the Ni2P/Ni5P4 phase ratio, combined with the integration of a nitrogen-doped carbon framework derived from nitrogen-containing MOF precursors, represents an effective and generalizable strategy for designing high-performance super-capacitor electrode materials.