Enhanced electrochemical performance of facilely synthesized cobalt doped cubic NiO nanoflakes for supercapacitor application

超级电容器 非阻塞I/O 电化学 介电谱 材料科学 循环伏安法 X射线光电子能谱 化学工程 纳米技术 冶金 化学 电极 物理化学 有机化学 工程类 催化作用
作者
Shyamli Ashok C,Ashalatha Vazhayil,Jasmine Thomas,Nygil Thomas
出处
期刊:Journal of energy storage [Elsevier BV]
卷期号:55: 105498-105498 被引量:32
标识
DOI:10.1016/j.est.2022.105498
摘要

Being inexpensive, nontoxic and environmental friendly, NiO has caught special attention as a promising electrode material for supercapacitors . We recently reported facile synthesis of porous NiO nanocrystallites for energy storage application . A sophisticated strategy to improve the electrochemical properties of NiO which is a p-type semiconductor is the incorporation of 3d metal ions into it. In this article, we present successful fabrication of highly porous cobalt doped NiO nanostructures through a facile, low cost, one step solution combustion method without a post calcination treatment and demonstrate the influence of cobalt content on structural properties and electrochemical behavior. The thus prepared Co doped NiO samples were systematically characterized by X-ray diffraction, Fourier transform infrared spectroscopy , Field emission scanning electron microscopy , High resolution transmission electron microscopy , X-ray photoelectron spectroscopy, Brunauer-Emmett-Teller measurements, cyclic voltammetry, chronopotentiometry and electrochemical impedance spectroscopy . It was found that the phase structure of pristine NiO remains unaffected by the process of doping. But doping obviously influences the textural and morphological properties, more importantly, enhances the electrochemical properties of pristine NiO. A maximum specific capacity of 746 C/g (specific capacitance of 1244 F/g) was obtained for an optimum cobalt dopant ratio, which is superior to undoped NiO (295 C/g). Moreover, cobalt doped NiO nanostructures exhibited a good rate capability (71 % capacity retention from 1 to 15 A/g) and long term cycling stability (83.7 % after 5000 cycles at 100 mV/s). An asymmetric device fabricated using Co doped NiO electrode as the positive electrode and activated carbon as the negative electrode delivered an energy density of 32.7 Wh/kg at a power density of 261 W/kg. • Cobalt doped NiO were prepared through one step solution combustion route • Synthesis protocol requires no post calcination treatment • Co doping significantly enhances the supercapacitive performance of NiO • 40 % Co doped NiO shows excellent specific capacitance of 1244 F/g • Excellent long term cycling stability (83.7 % after 5000 cycles at 100 mV/s)
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
ANG发布了新的文献求助10
刚刚
Lucas应助2116564采纳,获得10
刚刚
量子星尘发布了新的文献求助10
1秒前
清辉夜凝发布了新的文献求助10
1秒前
可爱的函函应助Shrine采纳,获得10
2秒前
recovery应助Aprilapple采纳,获得10
3秒前
baonali发布了新的文献求助10
4秒前
123发布了新的文献求助30
4秒前
小晓发布了新的文献求助10
4秒前
科研通AI2S应助Andema采纳,获得10
4秒前
6秒前
6秒前
9秒前
9秒前
11秒前
李健应助假发君采纳,获得10
12秒前
13秒前
KIORking发布了新的文献求助10
13秒前
落忆发布了新的文献求助10
13秒前
tengfei完成签到 ,获得积分10
13秒前
yinle发布了新的文献求助10
14秒前
14秒前
Ma发布了新的文献求助10
14秒前
14秒前
shensiang完成签到,获得积分10
15秒前
2116564发布了新的文献求助10
15秒前
16秒前
DZ完成签到,获得积分10
17秒前
俏皮小土豆完成签到,获得积分10
17秒前
Shrine发布了新的文献求助10
19秒前
炸胡娃娃完成签到,获得积分10
19秒前
清爽笑翠完成签到 ,获得积分10
19秒前
19秒前
顺利涵菡发布了新的文献求助10
21秒前
刘状发布了新的文献求助10
22秒前
22秒前
24秒前
会飞的鱼发布了新的文献求助10
24秒前
mushanes完成签到 ,获得积分10
25秒前
25秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989444
求助须知:如何正确求助?哪些是违规求助? 3531531
关于积分的说明 11254250
捐赠科研通 3270191
什么是DOI,文献DOI怎么找? 1804901
邀请新用户注册赠送积分活动 882105
科研通“疑难数据库(出版商)”最低求助积分说明 809174