Super-zincophilic additive induced interphase modulation enables long-life Zn anodes at high current density and areal capacity

被引：30

作者：

Geng, Yaheng ^{[1
]}

Miao, Licheng ^{[2
]}

Yan, Zichao ^{[1
]}

Xin, Wenli ^{[1
]}

Zhang, Lei ^{[1
]}

Peng, Huiling ^{[1
]}

Li, Junwei ^{[1
]}

Zhu, Zhiqiang ^{[1
]}

机构：

[1] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Peoples R China

[2] Shenzhen Univ, Coll Phys & Optoelect Engn, Key Lab Optoelect Devices & Syst, Minist Educ & Guangdong Prov, Shenzhen 518060, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2022年 / 10卷 / 18期

基金：

中国国家自然科学基金;

关键词：

ZINC ANODE; ELECTROLYTES; DESIGN;

D O I：

10.1039/d2ta01886a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Electrolyte additives have been widely used to enhance the reversibility of Zn plating/stripping in aqueous electrolyte, but limited improvements have been made at high current density and areal capacity. Here, super-zincophilic di-2-picolylamine (DPA) has been developed as an effective additive to enable long-life Zn anodes under severe cycling conditions. The DPA molecule, owing to its super-strong affinity to both Zn and Zn2+, can preferentially adsorb on the Zn surface, which not only retards water adsorption but also powerfully regulates random Zn2+ diffusion, thus stabilizing the anode/electrolyte interphase and eventually realizing highly reversible Zn plating/stripping even under high-current conditions. Remarkably, only trace amounts of the DPA additive (1 mu L mL(-1)) enable the Zn||Zn cell to deliver a lifespan of 1945 h at 10 mA cm(-2) and 10 mA h cm(-2), far surpassing the previously reported values. The Zn||polyaniline full cell also demonstrates improved performance with the DPA additive. Our work provides new insights into developing dendrite-free Zn anodes for high-power aqueous batteries.

引用

页码：10132 / 10138

页数：7

共 62 条

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