Nickel-cobalt layered double hydroxide nanosheets anchored to the inner wall of wood carbon tracheids by nitrogen-doped atoms for high-performance supercapacitors

被引：56

作者：

Li, Zuwei ^{[1
]}

Wang, Xiaoman ^{[1
]}

Wang, Ziheng ^{[1
]}

Wang, Luchi ^{[1
]}

Guo, Yuhang ^{[1
]}

Zhou, Cui ^{[1
]}

Li, Xianjun ^{[1
]}

Du, Kun ^{[1
]}

Luo, Yongfeng ^{[1
]}

机构：

[1] Cent South Univ Forestry & Technol, Coll Sci, Hunan Prov Key Lab Mat Surface & Interface Sci &, Changsha 410004, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2022年 / 608卷

基金：

中国国家自然科学基金;

关键词：

Supercapacitor; Nickel-cobalt layered double hydroxide; Wood-derived monolithic carbon; Nitrogen-doped carbon materials; HIGH-ENERGY; GRAPHENE; SHELL; ELECTRODE; ELECTROCATALYSTS; FOAM;

D O I：

10.1016/j.jcis.2021.09.127

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：

In this paper, a novel type of electrode material for high-performance hybrid supercapacitors is designed. The electrode mainly uses nitrogen-doped atoms to anchor the nickel-cobalt layered double hydroxide on the inner wall of wood-derived carbon tracheids from Chinese fir wood scraps. The specific capacity of the composite single electrode is 14.26 mAh cm(-2) at 10 mA cm(-2). The hybrid supercapacitor with a composite electrode cathode and nitrogen-doped wood-derived monolithic carbon materials as the anode has a high specific capacitance of 4.74F cm(-2) at 5 mA cm(-2), and the capacitance retention rate is 93.15% after 8000 charge-discharge cycles. The highest energy density and power density reach 1.48 mWh cm(-2) and 22.40 mW cm(-2), respectively. After doping with nitrogen, the combination with the nickel-cobalt layered double hydroxide is more uniform and stable, and the capacitance and cycling stability are significantly improved. (C) 2021 Elsevier Inc. All rights reserved.

引用

页码：70 / 78

页数：9

共 46 条

[1] Flexible Solid-State Supercapacitors Derived from Biomass Konjac/ Polyacrylonitrile-Based Nitrogen-Doped Porous Carbon [J].