New Ti3C2 aerogel as promising negative electrode materials for asymmetric supercapacitors
New Ti3C2 aerogel as promising negative electrode materials for asymmetric supercapacitors
复制标题
新型Ti3C2气凝胶作为非对称超级电容器有前景的负极材料
DOI：
10.1016/j.jpowsour.2017.08.029
复制
发表时间：
2017-10-01
影响因子：
9.2
通讯作者：
Zhang, Zhiguo
中科院分区：
文献类型：
--
作者：
Li, Lu;Zhang, Mingyi;Zhang, Zhiguo
首次采用EDA辅助自组装工艺合成了新型3D Ti3C2气凝胶。它的内部是通道和气孔结构。这种相互连接的气凝胶结构可以有效地抑制Ti3C2片层的堆积。因此，它具有高达176.3 m(2)g(-1)的大比表面积。对其电化学性能进行了测试。Ti3C2气凝胶在1M KOH电解液中，在扫描速度为2 mV S(-1)的条件下，当质量负载量为15 mg时，表面电容达到了1012.5 mF cm(-2)。以Ti3C2气凝胶电极为负极，电纺碳纳米纤维膜为正极，组装了非对称超级电容器。该器件可以提供120.0微瓦时厘米(-2)的高能量密度和26123微瓦厘米(-2)的最大功率密度。一个由19个红色发光二极管组成的灯盘由两个串联的ASC供电。(C)2017爱思唯尔B.V.保留所有权利。
Novel 3D Ti3C2 aerogel has been first synthesized by a simple EDA-assisted self -assembly process. Its inside are channels and pores structure. The interconnected aerogel, structure could efficiently restrain restacking of Ti3C2 flakes. Thus, it exhibits a large specific surface area as high as 176.3 m(2) g(-1). The electrochemical performances have been measured. The Ti3C2 aerogel achieves a quite high areal capacitance of 1012.5 mF cm(-2) for the mass loading of 15 mg at a scan rate of 2 mV s(-1) in 1 M KOH electrolyte. An asymmetric supercapacitor (ASC) has been assembled by using the Ti3C2 aerogel electrode as the negative electrode and electrospinning carbon nanofiber film as the positive electrode. The device can deliver a high energy density of 120.0 mu Wh cm(-2) and a maximum power density of 26123 mu W cm(-2). A lamp panel with nineteen red light -emitting diodes has been powered by two ASCs in series. (C) 2017 Elsevier B.V. All rights reserved.