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Investigation on xanthan gum as novel water soluble binder for LiFePO4 cathode in lithium-ion batteries
He, Jiarong1,2; Zhong, Haoxiang1; Wang, Jinglun1; Zhang, Lingzhi1
2017-08-15
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
Volume714Pages:409-418
AbstractXanthan Gum (XG) is systematically investigated and employed as water soluble binder for LiFePO4 (LFP) cathode in Li-ion batteries. XG binder exhibits good thermal stability and processes abundant functional groups such as carboxyl and hydroxyl, displaying a better adhesion strength of 0.085 N cm(-1) than sodium carboxymethyl cellulose (CMC, 0.050 N cm(-1)), but inferior to polyvinylidene difluoride (PVDF, 0.170 N cm(-1)). The Rheology test reveals that the viscosity of LFP slurry prepared with XG binder is higher than that of PVDF, resulting in a better dispersion of LFP and carbon black particles. The electrochemical performances of LFP-XG electrode are investigated and compared with those of aqueous CMC and conventional PVDF binder. LFP-XG displays better cycle stability and rate performance than PVDF, comparable to CMC, which retains 55.3% capacity of C/5 at 5 C as compared to PVDF (34.8%) and CMC (57.8%). Cyclic voltammetry (CV) shows that LFP-XG has smaller redox polarization and faster lithium diffusion rate than PVDF while electrochemical impedance spectroscopy (EIS) measurement at specified intervals reveals its more favorable electrochemical kinetics than that with PVDF, similar to CMC, thus better rate capability. Scanning electron microscopy (SEM) displays that LFP-XG has a more homogenous distribution of LFP and conductive carbon black particles with XG before cycling and better maintains its structure integrity after 100 cycles than that of PVDF. Furthermore, LFP-XG is observed to process a high ionic conductivity supported by dQ/dV profiles. (C) 2017 Elsevier B.V. All rights reserved.
SubtypeArticle
KeywordXanthan Gum Water Soluble Binder Adhesion Strength Lifepo4 Lithium-ion Battery
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.jallcom.2017.04.238
WOS Subject ExtendedChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS KeywordPERFORMANCE SILICON ANODES ; POLYACRYLIC-ACID ; CARBOXYMETHYL CHITOSAN ; POLYMER BINDER ; ELECTROCHEMICAL PERFORMANCES ; CAPACITY ; ELECTRODES ; ADHESIVE ; DESIGN ; IMPROVEMENT
Indexed BySCI
Language英语
Funding OrganizationK.C. Wong Education Foundation ; National Natural Science Foundation of China(21573239) ; Science & Technology project of Guangdong province(2014TX01N014/2015B010135008) ; Guangzhou Municipal Project for Science Technology(201509010018) ; Natural Science Foundation of Guangdong Province(2015A030313721)
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000402208500052
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/14151
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangdong Key Lab New & Renewable Energy Res & De, 2 Nengyuan Rd, Guangzhou 510640, Guangdong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
He, Jiarong,Zhong, Haoxiang,Wang, Jinglun,et al. Investigation on xanthan gum as novel water soluble binder for LiFePO4 cathode in lithium-ion batteries[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2017,714:409-418.
APA He, Jiarong,Zhong, Haoxiang,Wang, Jinglun,&Zhang, Lingzhi.(2017).Investigation on xanthan gum as novel water soluble binder for LiFePO4 cathode in lithium-ion batteries.JOURNAL OF ALLOYS AND COMPOUNDS,714,409-418.
MLA He, Jiarong,et al."Investigation on xanthan gum as novel water soluble binder for LiFePO4 cathode in lithium-ion batteries".JOURNAL OF ALLOYS AND COMPOUNDS 714(2017):409-418.
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