N-doped carbon foam based three-dimensional electrode architectures and asymmetric supercapacitors
N-doped carbon foam based three-dimensional electrode architectures and asymmetric supercapacitors
复制标题
基于氮掺杂碳泡沫的三维电极结构和不对称超级电容器
DOI：
10.1039/c4ta05932h
复制
发表时间：
2015-01
影响因子：
11.9
通讯作者：
Zhang Xiaogang
中科院分区：
文献类型：
--
作者：
Shen Laifa;Nie Ping;Yun Xiaoliang;Zhang Xiaogang
提高超级电容器的电化学性能主要取决于电极设计和系统结构。以自支撑泡沫碳/有序介孔碳(CF-OMC)膜为负极，以自支撑的CF-NiCo2O4纳米片(NSS)为正极，成功制备了一种新型的无添加剂非对称超级电容器(ASCs)。高导电性的三维(3D)CF骨架可以促进电子的转移，而多孔的OMC薄膜和超薄的NiCo2O4纳米片可以缩短离子扩散路径，促进电解质离子的快速迁移。优化后的非对称超级电容器可以工作在1.6V的工作电压下，具有高能量密度(∼47.8W h kg−1)、高功率密度(∼9800W kg−1，17.7W h kg−1)和出色的循环稳定性(∼10000次)。这项研究可能为制造轻质、低成本、高性能的储能电极铺平道路。
Improving the electrochemical performance of supercapacitors mainly depends on the electrode design and system construction. A new kind of additive-free asymmetric supercapacitors (ASCs) has been successfully fabricated using a self-supported carbon foam/ordered mesoporous carbon (CF-OMC) film as the negative electrode and free-standing CF-NiCo2O4 nanosheets (NSs) as the positive electrode, respectively. The highly conductive three-dimensional (3D) CF framework could facilitate electron transfer while the porous thin film of OMC and ultrathin NiCo2O4 nanosheets could shorten the ion diffusion path and facilitate the rapid migration of electrolyte ions. The optimized asymmetric supercapacitors could work with an operational voltage of 1.6 V, delivering a high energy density (∼47.8 W h kg−1), high power density (∼9800 W kg−1 at 17.7 W h kg−1) and outstanding cycle stability (∼10000 times). This research may pave the way for fabricating lightweight, low-cost, and high-performance electrodes for energy storage applications.
登录
查看更多内容
影响因子：
9.2
作者：
Deng, Fangze;Yu, Lin;Li, Yongfeng
通讯作者：
Li, Yongfeng
影响因子：
32.5
作者：
Hall, Peter J.;Mirzaeian, Mojtaba;Carter, Rebecca
通讯作者：
Carter, Rebecca
影响因子：
32.5
作者：
Puthusseri, Dhanya;Aravindan, Vanchiappan;Ogale, Satishchandra
通讯作者：
Ogale, Satishchandra
DOI：
10.1017/cbo9781139207249.009
发表时间：
2012
期刊：
--
影响因子：
--
作者：
W. Marsden
通讯作者：
W. Marsden
影响因子：
5.4
作者：
Yonggang Wang;Yongyao Xia
通讯作者：
Yonggang Wang;Yongyao Xia