Monodisperse Li1.2Mn0.6Ni0.2O2 microspheres with enhanced lithium   storage capability

doi:10.1039/c3ta00153a

CORC > 北京大学 > 化学与分子工程学院

	Monodisperse Li1.2Mn0.6Ni0.2O2 microspheres with enhanced lithium storage capability
	Cheng, Fuquan ; Xin, Yuelong ; Chen, Jitao ; Lu, Li ; Zhang, Xinxiang ; Zhou, Henghui
刊名	journal of materials chemistry a
	2013
关键词	RICH COMPOSITION LI1.2MN0.525NI0.175CO0.1O2 LI-ION BATTERIES CATHODE MATERIALS COPRECIPITATION SYNTHESIS ELECTRODE MATERIAL MANGANESE OXIDES RATE PERFORMANCE CO ELECTRODES OXYGEN LOSS CAPACITY
DOI	10.1039/c3ta00153a
英文摘要	Monodisperse spherical Mn0.75Ni0.25(OH)(2) precursors built up from plate-like primary particles have been successfully synthesized by the control of pH values during a co-precipitation reaction. The size of spherical particles, namely the secondary particles, is observed to decrease with increasing pH value from 9.0 to 11.0, and is accompanied by a series of shape changes of the primary particles from close-packed plates to well-exposed nanoplates, and then to nanoparticles. Further lithiation of these hydroxide precursors produces the final lithium-rich layered Li1.2Mn0.6Ni0.2O2 cathode materials without destroying the morphology of the precursors. Electrochemical measurements show that the spherical cathode material assembled from well-exposed nanoplates exhibits superior rate capability and good cyclability compared to other electrode materials, which can be attributed to its uniform particle size and the favorable shape which facilitates the diffusion of lithium ions. Through the control of the sample morphologies, we provide a simple and effective way to enhance the lithium storage capability of lithium-rich layered oxide cathode materials for high-performance lithium-ion batteries.; Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary; SCI(E); EI; 24; ARTICLE; 17; 5301-5308; 1
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/150837]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Cheng, Fuquan,Xin, Yuelong,Chen, Jitao,et al. Monodisperse Li1.2Mn0.6Ni0.2O2 microspheres with enhanced lithium storage capability[J]. journal of materials chemistry a,2013.
APA	Cheng, Fuquan,Xin, Yuelong,Chen, Jitao,Lu, Li,Zhang, Xinxiang,&Zhou, Henghui.(2013).Monodisperse Li1.2Mn0.6Ni0.2O2 microspheres with enhanced lithium storage capability.journal of materials chemistry a.
MLA	Cheng, Fuquan,et al."Monodisperse Li1.2Mn0.6Ni0.2O2 microspheres with enhanced lithium storage capability".journal of materials chemistry a (2013).