OALib Journal期刊
ISSN: 2333-9721
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空心微球聚苯胺二次锂氧电池正极材料研究
DOI: 10.3724/SP.J.1105.2013.12379, PP. 1080-1084
Keywords: 聚苯胺,空心微球,锂氧电池,正极
Abstract:
以铁氰化钾为氧化剂,在水溶液中引发苯胺单体聚合生成具有较高电导率的空心微球结构的聚苯胺.电化学测试结果表明,这种廉价易得的高分子材料能够作为锂氧电池的正极材料独立高效地催化电池反应的发生.在首次充放电过程中,该正极材料的能量密度能够达到2631mAh/gPANI,是常规非空心聚苯胺材料的2倍左右,而在最初的5次循环过程中发生了较明显的能量密度衰减之后,其在后续的25次充放电循环过程中保持了较为理想的循环稳定性,能量密度仅衰减了5%左右.该空心微球聚苯胺材料具有较高的能量密度和较好的循环稳定性.
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