Synergetic Chemistry and Interface Engineering of Hydrogel Electrolyte to Strengthen Durability of Solid-State Zn-Air Batteries

doi:10.1002/smtd.202101276

	Synergetic Chemistry and Interface Engineering of Hydrogel Electrolyte to Strengthen Durability of Solid-State Zn-Air Batteries
	Tang, Kun 1; Fu, Jimin 2; Wu, Mingzai 1; Hua, Tao 2; Liu, Jun 3; Song, Li 4; Hu, Haibo 1
刊名	SMALL METHODS
	2021-12-16
ISSN号	2366-9608
DOI	10.1002/smtd.202101276
通讯作者	Wu, Mingzai(wumz@ahu.edu.cn) ; Hu, Haibo(haibohu@ahu.edu.cn)
英文摘要	For the challenging pursuit of high energy efficiency and mechanical tolerance in flexible solid-state Zn-air batteries (FSZABs), a hydrogel electrolyte (HE) consisting of dual-network crosslinked polyacrylic acid-Fe3+-chitosan (PAA-Fe3+-CS) polymer host infiltrated with a mixed aqueous electrolyte of NH4Cl and ZnCl2 is developed. The absorbed near-neutral electrolyte renders the HE high ionic conductivity but low corrosiveness to both electrocatalysts and Zn metal anode (ZMA), ensuring more stable Zn-OH-O-2 chemistry compared to that in strong alkaline electrolyte and thus endowing the assembled FSZABs with a landmark cycle life up to 120 h (5 mA cm(-2)). More intriguingly, the CS molecular beams introduced into the PAA hydrogel backbone will precipitate and fold subjecting to the Hofmeister effect when saturated with the near-neutral electrolyte, which can effectively enhance the interfacial adhesion strength of the HE on both air cathode and ZMA, achieving reliable and robust bonding between them. Thus, the FSZABs simultaneously exhibited a superior tolerance to repeated mechanical deformation during operation, allowing more than 360 continuous bending-recovery cycles without any decline in voltage efficiency. The ingenious chemistry and interface synergetic engineering on the crucial HEs provides a rational methodology to realize boosted electrochemical and mechanical durability of FSZABs forward for future practical implementation.
资助项目	National Natural Science Foundation of China[51871001] ; National Natural Science Foundation of China[U2003132] ; Excellent Youth Fund of Anhui Province[2108085Y17] ; Hundred-Talent Program of Anhui Province Outstanding Youth Fund of Anhui Province[1808085J10] ; Youth Innovation Promotion Association of CAS[2017483] ; University Synergy Innovation Program of Anhui Province[GXXT-2019-016] ; University Synergy Innovation Program of Anhui Province[GXXT-2020-002] ; Open Fund Project of State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology[21kfhg11]
WOS关键词	POLYMER ELECTROLYTE
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000730987200001
资助机构	National Natural Science Foundation of China ; Excellent Youth Fund of Anhui Province ; Hundred-Talent Program of Anhui Province Outstanding Youth Fund of Anhui Province ; Youth Innovation Promotion Association of CAS ; University Synergy Innovation Program of Anhui Province ; Open Fund Project of State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/126398]
专题	中国科学院合肥物质科学研究院
通讯作者	Wu, Mingzai; Hu, Haibo
作者单位	1.Anhui Univ, Minist Educ, Sch Mat Sci & Engn, Key Lab Struct & Funct Regulat Hybrid Mat, Hefei 230601, Peoples R China 2.Hong Kong Polytech Univ, Inst Text & Clothing, Nanotechnol Ctr, Hung Hom,Kowloon, Hong Kong 999077, Peoples R China 3.Chinese Acad Sci, Inst Solid State Phys, Hefei 230031, Peoples R China 4.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei Natl Lab Phys Sci Microscale, CAS Ctr Excellence Nanosci, Hefei 230029, Peoples R China
推荐引用方式 GB/T 7714	Tang, Kun,Fu, Jimin,Wu, Mingzai,et al. Synergetic Chemistry and Interface Engineering of Hydrogel Electrolyte to Strengthen Durability of Solid-State Zn-Air Batteries[J]. SMALL METHODS,2021.
APA	Tang, Kun.,Fu, Jimin.,Wu, Mingzai.,Hua, Tao.,Liu, Jun.,...&Hu, Haibo.(2021).Synergetic Chemistry and Interface Engineering of Hydrogel Electrolyte to Strengthen Durability of Solid-State Zn-Air Batteries.SMALL METHODS.
MLA	Tang, Kun,et al."Synergetic Chemistry and Interface Engineering of Hydrogel Electrolyte to Strengthen Durability of Solid-State Zn-Air Batteries".SMALL METHODS (2021).