Stabilizing Zn<sub>2</sub>SiO<sub>4</sub> Anode by a Lithium Polyacrylate Binder for Highly Reversible Lithium-Ion Storage

doi:10.1021/acsami.4c06058

IMR OpenIR

	Stabilizing Zn₂SiO₄ Anode by a Lithium Polyacrylate Binder for Highly Reversible Lithium-Ion Storage
	Cheng, Renfei 1; Wang, Junchao 1,2; Song, Xintong 1,2; Wang, Zuohua 3; Liang, Yan 1; Zhang, Hongwang 3; Wang, Xiaohui 1
通讯作者	Wang, Xiaohui(wang@imr.ac.cn)
	2024-07-17
发表期刊	ACS APPLIED MATERIALS & INTERFACES
ISSN	1944-8244
卷号	16 期号:30 页码:39330-39340
摘要	Binders are crucial for maintaining the mechanical stability of the electrodes. However, traditional binders fail to adequately buffer the volume expansion of Zn2SiO4 anode, causing electrode contact failure and considerable capacity loss during cycling. In this study, we propose a simple and effective solution to address these challenges through a combined strategy of hollow structure design and the introduction of an aqueous lithium poly(acrylic acid) (LiPAA) binder. Hollow structures can shorten ion-transfer distance and accommodate volume change outside. The excellent adhesion of the LiPAA binder created a secure connection between the active Zn2SiO4 particles, conductive additives, and the current collector, which enhanced the mechanical stability and integrity of the electrode. As a result of these positive factors, a Zn2SiO4 electrode using LiPAA as a binder can deliver an excellent capacity of 499 mAh g(-1) at a high current density of 5 A g(-1) and a long life span of 1000 cycles at 1 A g(-1) with a capacity retention of 98%, which significantly outperforms other binders. As demonstrated by ex situ X-ray diffraction and ex situ X-ray absorption spectroscopy, the storage of lithium ions in Zn2SiO4 follows a dual conversion-alloying mechanism, using Zn as the redox center. In this process, Zn is first reduced to metallic Zn and then forms a LiZn alloy upon lithium-ion insertion. This work shows that LiPAA offers a promising approach to improve the cycling longevity of conversion and alloying anodes in Li-ion batteries.
关键词	binder LiPAA Zn2SiO4 anode material lithium-ion battery structural stability
资助者	Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences
DOI	10.1021/acsami.4c06058
收录类别	SCI
语种	英语
资助项目	Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences
WOS研究方向	Science & Technology - Other Topics ; Materials Science
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:001271991000001
出版者	AMER CHEMICAL SOC
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/188339
专题	中国科学院金属研究所
通讯作者	Wang, Xiaohui
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Yanshan Univ, Coll Mech Engn, Natl Engn Res Ctr Equipment & Technol Cold Strip R, Qinhuangdao 066004, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Renfei,Wang, Junchao,Song, Xintong,et al. Stabilizing Zn₂SiO₄ Anode by a Lithium Polyacrylate Binder for Highly Reversible Lithium-Ion Storage[J]. ACS APPLIED MATERIALS & INTERFACES,2024,16(30):39330-39340.
APA	Cheng, Renfei.,Wang, Junchao.,Song, Xintong.,Wang, Zuohua.,Liang, Yan.,...&Wang, Xiaohui.(2024).Stabilizing Zn₂SiO₄ Anode by a Lithium Polyacrylate Binder for Highly Reversible Lithium-Ion Storage.ACS APPLIED MATERIALS & INTERFACES,16(30),39330-39340.
MLA	Cheng, Renfei,et al."Stabilizing Zn₂SiO₄ Anode by a Lithium Polyacrylate Binder for Highly Reversible Lithium-Ion Storage".ACS APPLIED MATERIALS & INTERFACES 16.30(2024):39330-39340.