Improvement of electrochemical properties of PTMA cathode by using carbon blacks with high specific surface area

	Improvement of electrochemical properties of PTMA cathode by using carbon blacks with high specific surface area
	Liu, C. M.; Chen, J.; Wang, F. Q.; Yi, B. L.
刊名	russian journal of electrochemistry
	2012-11-01
卷号	48 期号:11 页码:1052-1057
关键词	organic radical battery PTMA carbon black cathode
ISSN号	1023-1935
通讯作者	陈剑
产权排序	1,1
英文摘要	a ptma (poly(4-methacryloyloxy-2,2,6,6-tetramethyl-piperidine-n-oxyl)) electrode with high energy density is prepared with black pearl 2000 (bp-2000). for comparisons, vapor grown carbon fiber (vgcf) and acetylene black (ab) are also employed to fabricate the ptma-electrodes. the electrochemical properties of the electrode are improved obviously by employing bp-2000. the specific capacity of the ptma-bp electrode based on the mass of ptma is 26.7% larger than that of the ptma-vgcf and ptma-ab electrodes at a 1 c rate. at higher discharge rates, the polarization degree of the li/ptma-bp cell is the minimum one. at a discharge rate of 50 c, the specific capacity of the ptma-bp electrode is 104.9 ma h g(-1), and is 27.6 and 16.7% larger than that of the ptma-vgcf and ptma-ab electrodes, respectively. besides, the discharge plateau of the li/ptma-bp cell is 3.35 v, and is 0.03 and 0.13 v higher than that of the li/ptma-ab and li/ptma-vgcf cells, respectively. the larger specific capacity of bp-2000 and the improved electrochemical kinetics of ptma at the surface of bp carbon, resulted from the larger surface area of bp-2000, are the main factors for improving the capacity and rate capability of the ptma-electrode. the high specific surface area of bp-2000 is also beneficial to the thorough contact of ptma with bp carbon, resulting in the improved conductivity of the ptma-bp composites. the cycling performance of the ptma-bp electrode is also satisfied.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences
类目[WOS]	electrochemistry
研究领域[WOS]	electrochemistry
关键词[WOS]	organic radical battery ; rechargeable batteries ; active material ; fuel-cell ; electrode ; polymer ; tempo ; polyacetylene ; performance ; moieties
收录类别	SCI
语种	英语
WOS记录号	WOS:000311332800003
公开日期	2013-10-11
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/118071]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	Chinese Acad Sci, Dalian Inst Chem Phys, Lab Adv Rechargeable Batteries, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Liu, C. M.,Chen, J.,Wang, F. Q.,et al. Improvement of electrochemical properties of PTMA cathode by using carbon blacks with high specific surface area[J]. russian journal of electrochemistry,2012,48(11):1052-1057.
APA	Liu, C. M.,Chen, J.,Wang, F. Q.,&Yi, B. L..(2012).Improvement of electrochemical properties of PTMA cathode by using carbon blacks with high specific surface area.russian journal of electrochemistry,48(11),1052-1057.
MLA	Liu, C. M.,et al."Improvement of electrochemical properties of PTMA cathode by using carbon blacks with high specific surface area".russian journal of electrochemistry 48.11(2012):1052-1057.