Polyvinyl alcohol grafted poly (acrylic acid) as water-soluble binder with enhanced adhesion capability and electrochemical performances for Si anode

doi:10.1016/j.jallcom.2018.05.286

	Polyvinyl alcohol grafted poly (acrylic acid) as water-soluble binder with enhanced adhesion capability and electrochemical performances for Si anode
	He, Jiarong 1,2; Zhang, Lingzhi 1
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2018-09-30
卷号	763 页码:228-240
关键词	Graft polymerization Polyvinyl alcohol-g-poly (acrylic acid) Water-soluble binder Si anode Lithium-ion battery
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2018.05.286
通讯作者	Zhang, Lingzhi(lzzhang@ms.giec.ac.cn)
英文摘要	Polyvinyl alcohol grafted poly (acrylic acid) (PVA-g-PAA) is synthesized through graft polymerization of acrylic acid (AA) onto PVA backbone via a free radical reaction. PVA-g-PAA is used as a water-soluble binder for silicon (Si) anodes in lithium-ion batteries (LIBs). The enhanced adhesion strength, excellent flexibility and high electrolyte uptake after grafting reaction render PVA-g-PAA a robust binder for Si anodes. Compared to linear PVA, PAA and CMC, optimal Si-PVA-g-10PAA electrode exhibits better cycle stability, higher Coulombic efficiency and more excellent rate capability, possessing a high electrical conductivity, low SEI/charge transfer resistance and fast lithium-ion diffusion coefficient. PVA-g-PAA binder not only maintains the electrode's mechanical and electrical integrity, facilitates a favorable electrochemical kinetics, but also assists in forming a stable SEI layer on Si surface upon long-term cycling. Such a strategy sheds light on the design of novel polymer binders for practical applications of high-capacity active materials with great volume change. (C) 2018 Elsevier B.V. All rights reserved.
资助项目	K.C. Wong Education Foundation ; National Natural Science Foundation of China[21573239] ; Guangdong Province for High-Level Talents[2014TX01N014] ; Science & Technology project of Guangdong province[2015B010135008] ; Science & Technology project of Guangdong province[2016B010114003] ; Guangzhou Municipal Project for Science Technology[201509010018] ; Natural Science Foundation of Guangdong Province[2015A030313721]
WOS关键词	LITHIUM-ION BATTERIES ; HIGH-CAPACITY ANODE ; SILICON ANODES ; LIFEPO4 CATHODE ; CARBOXYMETHYL CHITOSAN ; COMPOSITE ELECTRODES ; BUFFERING VOIDS ; C COMPOSITE ; POLYACRYLATE ; NANOWIRES
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000442484300028
资助机构	K.C. Wong Education Foundation ; National Natural Science Foundation of China ; Guangdong Province for High-Level Talents ; Science & Technology project of Guangdong province ; Guangzhou Municipal Project for Science Technology ; Natural Science Foundation of Guangdong Province
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/23781]
专题	中国科学院广州能源研究所
通讯作者	Zhang, Lingzhi
作者单位	1.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
推荐引用方式 GB/T 7714	He, Jiarong,Zhang, Lingzhi. Polyvinyl alcohol grafted poly (acrylic acid) as water-soluble binder with enhanced adhesion capability and electrochemical performances for Si anode[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2018,763:228-240.
APA	He, Jiarong,&Zhang, Lingzhi.(2018).Polyvinyl alcohol grafted poly (acrylic acid) as water-soluble binder with enhanced adhesion capability and electrochemical performances for Si anode.JOURNAL OF ALLOYS AND COMPOUNDS,763,228-240.
MLA	He, Jiarong,et al."Polyvinyl alcohol grafted poly (acrylic acid) as water-soluble binder with enhanced adhesion capability and electrochemical performances for Si anode".JOURNAL OF ALLOYS AND COMPOUNDS 763(2018):228-240.