Biomass derived carbon containing in-situ constructed nickel-based hydroxide nanostructures based on MnO2 template for high performance asymmetric supercapacitors

被引：17
作者：
Hu, Weijie [1 ]
Wang, Bin [2 ,3 ]
Yu, Yanling [4 ]
Wang, Nuoxin [5 ]
Wu, Xiaojuan [2 ,3 ]
机构：
[1] Guangdong Univ Petrochem Technol, Sch Chem, Maoming 525000, Guangdong, Peoples R China
[2] Southwest Jiaotong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Technol Mat, Chengdu 610031, Sichuan, Peoples R China
[3] Southwest Jiaotong Univ, Yibin Inst, Yibin 644000, Sichuan, Peoples R China
[4] Harbin Inst Technol, Sch Chem & Chem Engn, Harbin 150001, Heilongjiang, Peoples R China
[5] Zunyi Med Univ, Affiliated Hosp, Key Lab Cell Engn Guizhou Prov, Zunyi 563000, Guizhou, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2021年 / 884卷
基金：
中国博士后科学基金;
关键词：
Nickel-based hydroxide; Redox etching reaction; Biomass-derived carbon; Asymmetric supercapacitor; ELECTRODE MATERIALS; POROUS CARBON; THIN-FILM; ENERGY-STORAGE; GRAPHENE; NANOSHEETS; OXIDE; FOAM; NANOPARTICLES; NANOTUBES;
D O I：
10.1016/j.jallcom.2021.161149
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：
Nickel-based hydroxide/bamboo fiber-derived carbon (BFC) composite (BFCNi), with an open and interconnected pore structure inherited from BFC, is constructed for the first time by redxo etching reaction based on MnO2 templates. Benefiting from the outstanding porous structure of BFC and high theoretical capacity of nickel-based hydroxide, BFCNi exhibits excellent advantages for electrochemical energy storage. Typically, in the three-electrode system, BFCNi delivers high specific capacitance of 1310 F g(-1) at 1 A g(-1) and superior rate capability (841 F g(-1) at 15 A g(-1)). The energy storage mechanism of BFCNi is deeply studied, which reveals that the energy storage process of BFCNi combines surface control behavior and diffusion control behavior. Additionally, a coin-type asymmetric supercapacitor on the basic of BFCNi and BFC is assembled (BFCNi//BFC), which achieves an extraordinary energy density of 74.8 Wh kg(-1) at a power density of 799.8 W kg(-1), good cycle stability (87.5% capacitance retention after 5000 cycles) and satisfactory rate capability, indicating a great promise of BFCNi in electrochemical energy storage. (C) 2021 Elsevier B.V. All rights reserved.
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页数：9
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