Highly efficient solid-state synthesis of Co3O4 on multiwalled carbon nanotubes for supercapacitors

被引：91

作者：

Bathula, Chinna ^{[1
]}

Rabani, Iqra ^{[2
]}

Ramesh, Sivalingam ^{[3
]}

Lee, Sang-Hoon ^{[1
]}

Palem, Ramasubba Reddy ^{[4
]}

Ahmed, Abu Talha Aqueel ^{[5
]}

Kim, Heung Soo ^{[3
]}

Seo, Young-Soo ^{[2
]}

Kim, Hyun-Seok ^{[1
]}

机构：

[1] Dongguk Univ Seoul, Div Elect & Elect Engn, Seoul 04620, South Korea

[2] Sejong Univ, Dept Nanotechnol & Adv Mat Engn, Seoul 05006, South Korea

[3] Dongguk Univ Seoul, Dept Mech Robot & Energy Engn, Seoul 04620, South Korea

[4] Dongguk Univ, Dept Med Biotechnol, Gyeonggi 10326, South Korea

[5] Dongguk Univ Seoul, Div Phys & Semicond Sci, Seoul 04620, South Korea

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2021年 / 887卷

基金：

新加坡国家研究基金会;

关键词：

Cobalt oxides; NMWCNT; Supercapacitor; Cyclic stability; NICKEL FOAM; PERFORMANCE; GRAPHENE; NANOSHEETS; COBALT;

D O I：

10.1016/j.jallcom.2021.161307

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：

Synthesizing hybrid nanostructures through green protocols continues to attract great attention since it offers atom economy, simple processing, and environmental friendliness; and avoids using harsh chemical reagents. Herein we report the assembly of cobalt oxide on nitrogen-doped multiwalled carbon nanotubes (Co3O4-NMWCNT) composite synthesized by a green protocol with mechanochemical grinding for super capacitor applications. The structural and morphological properties of the composites were confirmed by the aid of X-ray diffraction (XRD) studies, Raman spectroscopy, and scanning electron microscope (SEM), Xray photoelectron spectroscopy (XPS) and high-resolution transmission electron microscopy (HR-TEM). The synthesized composite material exhibited tube-like morphology with the distribution of Co3O4 nano particles. Fabricated Co3O4-NMWCNT symmetric supercapacitor device was further investigated for its electrochemical properties, thereby leading a high specific capacitance 202 F/g at 1 A/g of current density, with 25 Wh/kg of energy density at 0.9 kW/kg of power density. Therefore, Co3O4-NMWCNT composite electrodes offer excellent capacitive performance for the energy storage system. (C) 2021 Elsevier B.V. All rights reserved.

引用

页数：8

共 39 条

[1] Fabrication of FeO@CuCo2S4 multifunctional electrode for ultrahigh-capacity supercapacitors and efficient oxygen evolution reaction [J].