期刊
NANO LETTERS
卷 12, 期 3, 页码 1198-1202出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl2034464
关键词
Nanoporous; nanorod; lithium battery; three dimensional; current collector
类别
资金
- Hartley Family Foundation
- Rice University
- National Institute of Health [RO1CA12842]
- Army Research Office
- Multidisciplinary University Research Initiative (MURI)
Conventional thin film batteries are fabricated based on planar current collector designs where the high contact resistance between the current collector and electrodes impedes overall battery performance. Hence, current collectors based on 3D architectures and nanoscale roughness has been proposed to dramatically increase the electrode-current collector surface contact areas and hence significantly reduce interfacial resistance. The nanorod-based current collector configuration is one of several 3D designs which has shown high potential for the development of:high energy and high power microbatteries in this regard. Herein we fabricate a nanoporous nanorod based current collector, which provides increased surface area for electrode deposition arising from the porosity of each nanorods, yet keeping an ordered spacing between nanorods for the deposition of subsequent electrolyte and electrode layers. The new nanostructured 3D current collector is demonstrated with a polyaniline (PANI)-based electrode system and is shown to deliver improved rate capability characteristics compared to planar configurations. We have been able to achieve stable capacities of similar to 32 mu Ah/cm(2) up to 75 cycles of charge/discharge even at a current rate of similar to 0.04 mA/cm(2) and have observed good rate capability even at high current rates of similar to 0.8 mA/cm(2).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据