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	Graphene encapsulated spherical hierarchical superstructures self-assembled by life0.75mn0.25po4 nanoplates for high-performance li-ion batteries
	Mei, Riguo1,2; Yang, Yanfeng1; Song, Xiaorui1; An, Zhenguo1; Yan, Kaiqi1; Zhang, Jingjie1
刊名	Electrochimica acta
	2016-11-10
卷号	218页码:325-334
关键词	Li-ion battery Cathode material Life0.75mn0.25po4 nanoplates Graphene encapsulation Self-assembly
ISSN号	0013-4686
DOI	10.1016/j.electacta.2016.07.140
通讯作者	Zhang, jingjie(jjzhang@mail.ipc.ac.cn)
英文摘要	The electrochemical performance of life0.75mn0.25po4 material is further enhanced via synergistic strategies including crystal orientation growth, microspherical self-assembly and graphene encapsulation. the crystal orientation growth of life0.75mn0.25po4 with plate-like morphology not only reduces the li-ion transport length, but also enlarges the (010) surface, and leads to the improvement of li-ion diffusion. the self-assembled spherical hierarchical superstructures can effectively prevent the planeplane stacks of life0.75mn0.25po4 nanoplates during spontaneously aggregating, providing more (010) surface for li+ insertion/extraction. the graphene encapsulation can build a 3d conductive network as well as stabilize the microspherical aggregations, resulting in superior electronic conductivity and stability. as a consequence of the synergistic effects, the as-obtained life0.75mn0.25po4 sample exhibits excellent rate capability (141.1 ma h g(-1) at 5 c, 126.5 ma h g(-1) at 10 c, 107.7 ma h g(-1) at 20 c) and outstanding cyclability (25 degrees c, 94.6% capacity retention after 500 cycles at 1 c). the synergistic strategy involving crystal orientation growth, microspherical self-assembly and graphene encapsulation provides a fascinating candidate to obtain superior olivine-type cathode materials with excellent rate capability and cycling stability, and holds the potential to be extended to the controlled preparation of other electrode materials. (c) 2016 published by elsevier ltd.
WOS关键词	ELECTROCHEMICAL PERFORMANCE ; CATHODE MATERIAL ; LIMNPO4 ; LIFEPO4 ; OLIVINE ; OXIDE ; MICROSPHERES ; CHALLENGES ; EVOLUTION ; SERIES
WOS研究方向	Electrochemistry
WOS类目	Electrochemistry
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000385840100040
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2374837
专题	中国科学院大学
通讯作者	Zhang, Jingjie
作者单位	1.Chinese Acad Sci, Tech Inst Phys & Chem, State Key Lab Technol Space Cryogen Propellants, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Mei, Riguo,Yang, Yanfeng,Song, Xiaorui,et al. Graphene encapsulated spherical hierarchical superstructures self-assembled by life0.75mn0.25po4 nanoplates for high-performance li-ion batteries[J]. Electrochimica acta,2016,218:325-334.
APA	Mei, Riguo,Yang, Yanfeng,Song, Xiaorui,An, Zhenguo,Yan, Kaiqi,&Zhang, Jingjie.(2016).Graphene encapsulated spherical hierarchical superstructures self-assembled by life0.75mn0.25po4 nanoplates for high-performance li-ion batteries.Electrochimica acta,218,325-334.
MLA	Mei, Riguo,et al."Graphene encapsulated spherical hierarchical superstructures self-assembled by life0.75mn0.25po4 nanoplates for high-performance li-ion batteries".Electrochimica acta 218(2016):325-334.

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