期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 835, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2020.155157
关键词
NiCoP; NiCoP@P-C; Phosphorization; Supercapacitors
资金
- National Natural Science Foundation of China [21676039, 21776026]
- LiaoNing Revitalization Talents Program [XLYC1902037]
- Dalian Leading Talents Project [2018-192]
- National Key R&D Program of China [2017YFB0308701]
- State Key Laboratory of Bioreactor Engineering [2017kfkt12]
- Opening Project of Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control [2019KF11]
- National College Students Innovation and Entrepreneurship Training Program [201910152041]
Electrode materials with excellent capacitance performance remain on urgent need for energy storage devices. In this study, we successfully fabricated porous P-doped carbon-supported NiCoP nanoparticles (NiCoP@P-C) by chelating sodium alginate with Ni2+ and Co2+ ions and subsequently performing a high-temperature calcination process. The carbonization process involved phosphating the metal ions to form bimetallic NiCoP nanoparticles and doping the P element into the carbon framework. The as-prepared material integrated the merits of metal phosphide (high theoretical specific capacitance), bimetal (excellent electrochemical conductivity), and porous structure (rapid ion transportation). The sample consequently exhibited outstanding electrochemical properties with an ultrahigh specific capacitance of 920 F g(-1) (0.5 A g(-1)) and a high cycle stability of 84% over 5000 cycles with a small mass loading of 3.6 mg cm(-2). Moreover, an asymmetric supercapacitor assembled with NiCoP@P-C-500 as the positive electrode and activated carbon as the negative electrode delivered a maximum energy density of 57.8 W h kg(-1) at a power density of 522 W kg(-1). (C) 2020 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据