Unraveling Paradoxical Effects of Large Current Density on Zn Deposition

doi:10.1002/adma.202404140

IMR OpenIR

	Unraveling Paradoxical Effects of Large Current Density on Zn Deposition
	Liu, Zhexuan 1,2; Liu, Jiachang 1,2; Xiao, Xiao 1,2; Zheng, Zhiyang 1,2; Zhong, Xiongwei 3; Fu, Qingjin 1,2; Wang, Shaogang 4; Zhou, Guangmin 1,2
通讯作者	Zhou, Guangmin(guangminzhou@sz.tsinghua.edu.cn)
	2024-04-30
发表期刊	ADVANCED MATERIALS
ISSN	0935-9648
页码	9
摘要	Aqueous zinc-based batteries (ZBs) have been widely investigated owing to their intrinsic safety, low cost, and simple assembly. However, the actual behavior of Zn deposition under large current density is still a severe issue associated with obscure mechanism interpretation of ZBs under high loading. Here, differing from the conventional understanding that short circuit is induced by dendrite penetrating under large current density (10-100 mA cm-2), the separator permeation effect is unraveled to illustrate the paradox between smooth deposition and short lifespan. Generally, a dense plating morphology is achieved under large current density because of intensive nuclei and boosted plane growth. Nevertheless, in the scenes applying separators, the multiplied local current density derived from narrow separator channels leads to rapid Zn2+ exhaustion, converting the Zn deposition mode from nucleation control to concentration control, which eventually results in separator permeation and short circuit. This effect is validated in other aqueous metal anodes (Cu, Sn, Fe) and receives similar results. Based on the understanding, a micro-pore (150 mu m) sponge foam is proposed as separators for large-current anodes to provide broader Zn2+ path and mitigate the separator permeation effect. This work provides unique perspectives on coordinating fast-charging ability and anode stability of ZBs. The paradox between oriented Zn deposition and poor cell lifetime during large current operation is revealed to be relevant with the multiplied current density in the separator channels. Furthermore, this phenomenon is described as the separator permeation effect, which explains the rapid short circuit despite smooth Zn deposition. image
关键词	large current density nucleation plane growth separator channel zinc-based battery
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Guangdong Innovative and Entrepreneurial Research Team Program ; Guangdong Basic and Applied Basic Research Foundation ; Shenzhen Science and Technology Program ; Overseas Research Cooperation Fund of Tsinghua Shenzhen International Graduate School
DOI	10.1002/adma.202404140
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China ; National Natural Science Foundation of China[22309077] ; Guangdong Innovative and Entrepreneurial Research Team Program[2021ZT09L197] ; Guangdong Basic and Applied Basic Research Foundation[2022A1515110117] ; Shenzhen Science and Technology Program[KQTD20210811090112002] ; Overseas Research Cooperation Fund of Tsinghua Shenzhen International Graduate School ; [2019YFA0705703]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:001209584900001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：16[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/321006/185668
专题	中国科学院金属研究所
通讯作者	Zhou, Guangmin
作者单位	1.Tsinghua Univ, Tsinghua Berkeley Shenzhen Inst, Shenzhen 518055, Peoples R China 2.Tsinghua Univ, Tsinghua Shenzhen Int Grad Sch, Shenzhen 518055, Peoples R China 3.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Liu, Zhexuan,Liu, Jiachang,Xiao, Xiao,et al. Unraveling Paradoxical Effects of Large Current Density on Zn Deposition[J]. ADVANCED MATERIALS,2024:9.
APA	Liu, Zhexuan.,Liu, Jiachang.,Xiao, Xiao.,Zheng, Zhiyang.,Zhong, Xiongwei.,...&Zhou, Guangmin.(2024).Unraveling Paradoxical Effects of Large Current Density on Zn Deposition.ADVANCED MATERIALS,9.
MLA	Liu, Zhexuan,et al."Unraveling Paradoxical Effects of Large Current Density on Zn Deposition".ADVANCED MATERIALS (2024):9.