Enhanced lithium and electron diffusion of LiFePO4 cathode with two-dimensional Ti3C2 MXene nanosheets

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	Enhanced lithium and electron diffusion of LiFePO4 cathode with two-dimensional Ti3C2 MXene nanosheets
	Li, XC; Qian, YH; Liu, T; Cao, FT; Zang, Z; Sun, XL; Sun, SM; Niu, QH; Wu, JF; Wu, JF (reprint author), Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266042, Peoples R China.
	2018-08-01
发表期刊	JOURNAL OF MATERIALS SCIENCE
ISSN	0022-2461
卷号	53 期号:15 页码:11078-11090
摘要	Novel LiFePO4/Ti3C2 composite (LFP/TC) cathodes have been prepared via a simple wet mixing method followed by a heat treatment at 400 A degrees C. Ti3C2 nanosheets bridge the LiFePO4 nanoparticles to form an integrated conductive network via the "plane-to-point" conducting mode. This conductive network acts as short pathways for the diffusion of both lithium ion and electron in the composite cathode. Thus, the electronic and ionic conductivities are simultaneously enhanced, leading to the improved electrochemical properties of LFP/TC composites. Thereinto, the LFP/TC composite with 2 wt% Ti3C2 (LFP/TC2) delivers the highest initial discharge capacity of 159 mAh g(-1) at 0.1 C as well as the best rate performance with a high reversible capacity of 86 mAh g(-1) at 5 C. Meanwhile, the LFP/TC2 composite also holds the superior capacity retention of 96% at 1 C after 100 cycles. The results demonstrate that LFP/TC composite has promising practical applications as the cathode material in the high-power lithium-ion batteries.; Novel LiFePO4/Ti3C2 composite (LFP/TC) cathodes have been prepared via a simple wet mixing method followed by a heat treatment at 400 A degrees C. Ti3C2 nanosheets bridge the LiFePO4 nanoparticles to form an integrated conductive network via the "plane-to-point" conducting mode. This conductive network acts as short pathways for the diffusion of both lithium ion and electron in the composite cathode. Thus, the electronic and ionic conductivities are simultaneously enhanced, leading to the improved electrochemical properties of LFP/TC composites. Thereinto, the LFP/TC composite with 2 wt% Ti3C2 (LFP/TC2) delivers the highest initial discharge capacity of 159 mAh g(-1) at 0.1 C as well as the best rate performance with a high reversible capacity of 86 mAh g(-1) at 5 C. Meanwhile, the LFP/TC2 composite also holds the superior capacity retention of 96% at 1 C after 100 cycles. The results demonstrate that LFP/TC composite has promising practical applications as the cathode material in the high-power lithium-ion batteries.
部门归属	[li, xichao ; liu, tao ; cao, fengting ; sun, xiaolin ; sun, shimei ; niu, quanhai ; wu, jianfei] chinese acad sci, qingdao inst bioenergy & bioproc technol, qingdao 266042, peoples r china ; [qian, yuhai] chinese acad sci, inst met res, high performance ceram div, shenyang 110016, peoples r china ; [zang, zhao] china univ petr, coll mech & elect engn, qingdao 266580, peoples r china
关键词	Li-ion Batteries 2d Titanium Carbide 1100 Degrees-c Electrochemical Performance Conductive Additives Energy-storage Graphene Ti3alc2 Composite Capacity
学科领域	Materials Science, Multidisciplinary
资助者	100 Talents program of Chinese Academy of Sciences; National Natural Science Foundation of China [21673267]; China Postdoctoral Science Foundation
收录类别	SCI
语种	英语
WOS记录号	WOS:000432213500036
引用统计	被引频次：40[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/79278
专题	中国科学院金属研究所
通讯作者	Wu, JF (reprint author), Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266042, Peoples R China.
推荐引用方式 GB/T 7714	Li, XC,Qian, YH,Liu, T,et al. Enhanced lithium and electron diffusion of LiFePO4 cathode with two-dimensional Ti3C2 MXene nanosheets[J]. JOURNAL OF MATERIALS SCIENCE,2018,53(15):11078-11090.
APA	Li, XC.,Qian, YH.,Liu, T.,Cao, FT.,Zang, Z.,...&Wu, JF .(2018).Enhanced lithium and electron diffusion of LiFePO4 cathode with two-dimensional Ti3C2 MXene nanosheets.JOURNAL OF MATERIALS SCIENCE,53(15),11078-11090.
MLA	Li, XC,et al."Enhanced lithium and electron diffusion of LiFePO4 cathode with two-dimensional Ti3C2 MXene nanosheets".JOURNAL OF MATERIALS SCIENCE 53.15(2018):11078-11090.