High-performance and flexible all-solid-state hybrid supercapacitor constructed by NiCoP/CNT and N-doped carbon coated CNT nanoarrays

被引:91
作者
Zhao, Guoqing [1 ,2 ]
Tang, Yulin [1 ]
Wan, Gengping [1 ,2 ]
Xu, Xuefei [1 ]
Zhou, Xuechun [1 ]
Zhou, Maofan [1 ]
Hao, Chuncheng [2 ]
Deng, Shengjue [3 ,4 ]
Wang, Guizhen [1 ,2 ]
机构
[1] Hainan Univ, Minist Educ, Key Lab Adv Mat Trop Isl Resources, Haikou 570228, Hainan, Peoples R China
[2] Qingdao Univ Sci & Technol, Inst Adv Elect Mat, Qingdao 266042, Peoples R China
[3] Zhejiang Univ, Key Lab Adv Mat & Applicat Batteries Zhejiang Pro, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China
[4] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China
基金
中国国家自然科学基金;
关键词
Hybrid supercapacitor; Flexible devices; NiCoP; N-doped carbon; ATOMIC LAYER DEPOSITION; ELECTRODE MATERIALS; NANOTUBE ARRAYS; FABRICATION; EFFICIENT; NANOSTRUCTURES; NANOPARTICLES; NANOFLAKES; NANOCOILS; NANOFIBER;
D O I
10.1016/j.jcis.2020.03.084
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The exploration of flexible supercapacitors with high energy density is a matter of considerable interest to meet the demand of wearable electronic devices. In this work, with carbon nanotubes (CNTs) grown on carbon cloth (CC) as flexible substrate, NiCoP nanoflake-surrounded CNT nanoarrays (NiCoP/CNT) and Ndoped carbon coated CNT nanoarrays (CNT@N-C) were synthesized on CC and utilized as cathode and anode materials for constructing flexible all-solid-state hybrid supercapacitor. Both them exhibit excellent electrochemical performance. NiCoP/CNT/CC composites can deliver a specific capacitance of 261.4 mAh g(-1), and CNT@N-C/CC exhibits a high capacitance of 256 F g(-1) at the current density of 0.5 A g(-1). The hybrid supercapacitor built from the two well designed electrodes can provide a specific capacitance of 123.3 mAh g(-1) at current density 1 mA g(-1) within a potential window of 0-1.5 V and retain almost 85% of its initial capacitance after 5000 cycles. Furthermore, the flexible devices show the maximum energy density of 138.7 Wh kg(-1) and a power density of 6.25 kW kg(-1), obviously superior to some recent reported supercapacitor devices, indicating its potential in practical application. (C) 2020 Elsevier Inc. All rights reserved.
引用
收藏
页码:151 / 159
页数:9
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