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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
Source PublicationJOURNAL OF MATERIALS SCIENCE
ISSN0022-2461
Volume53Issue:15Pages:11078-11090
AbstractNovel 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.
description.department[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
KeywordLi-ion Batteries 2d Titanium Carbide 1100 Degrees-c Electrochemical Performance Conductive Additives Energy-storage Graphene Ti3alc2 Composite Capacity
Subject AreaMaterials Science, Multidisciplinary
Funding Organization100 Talents program of Chinese Academy of Sciences; National Natural Science Foundation of China [21673267]; China Postdoctoral Science Foundation
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79278
Collection中国科学院金属研究所
Corresponding AuthorWu, JF (reprint author), Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266042, Peoples R China.
Recommended Citation
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.
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