Constructing a Super-Saturated Electrolyte Front Surface for Stable Rechargeable Aqueous Zinc Batteries

被引：865

作者：

Yang, Huijun ^{[1
,4
]}

Chang, Zhi ^{[1
,4
]}

Qiao, Yu ^{[1
]}

Deng, Han ^{[1
,4
]}

Mu, Xiaowei ^{[2
,3
]}

He, Ping ^{[2
,3
]}

Zhou, Haoshen ^{[1
,2
,3
,4
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Energy Technol Res Inst, 1-1-1 Umezono, Tsukuba, Ibaraki 3058568, Japan

[2] Nanjing Univ, Natl Lab Solid State Microstruct, Jiangsu Key Lab Artificial Funct Mat, Ctr Energy Storage Mat & Technol,Coll Engn & Appl, Nanjing 210093, Peoples R China

[3] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China

[4] Univ Tsukuba, Grad Sch Syst & Informat Engn, 1-1-1 Tennoudai, Tsukuba, Ibaraki 3058573, Japan

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2020年 / 59卷 / 24期

基金：

中国国家自然科学基金;

关键词：

metal-organic frameworks (MOFs); super-saturated electrolyte; zinc batteries; zinc electrodeposition; HIGH-ENERGY-DENSITY; ZNSO4; SOLUTIONS; RAMAN-SPECTROSCOPY; ION BATTERIES; SHAPE CHANGE; LONG-LIFE; CHEMISTRY; PASSIVATION; DISSOLUTION; ANODES;

D O I：

10.1002/anie.202001844

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Rechargeable aqueous zinc batteries (RAZB) have been re-evaluated because of the superiority in addressing safety and cost concerns. Nonetheless, the limited lifespan arising from dendritic electrodeposition of metallic Zn hinders their further development. Herein, a metal-organic framework (MOF) was constructed as front surface layer to maintain a super-saturated electrolyte layer on the Zn anode. Raman spectroscopy indicated that the highly coordinated ion complexes migrating through the MOF channels were different from the solvation structure in bulk electrolyte. Benefiting from the unique super-saturated front surface, symmetric Zn cells survived up to 3000 hours at 0.5 mA cm(-2), near 55-times that of bare Zn anodes. Moreover, aqueous MnO2-Zn batteries delivered a reversible capacity of 180.3 mAh g(-1)and maintained a high capacity retention of 88.9 % after 600 cycles with MnO(2)mass loading up to 4.2 mg cm(-2).

引用

页码：9377 / 9381

页数：5

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