杰纳斯
接口(物质)
方向(向量空间)
离子
材料科学
电池(电)
结晶学
Crystal(编程语言)
化学物理
纳米技术
化学
计算机科学
物理
几何学
有机化学
复合材料
毛细管数
量子力学
毛细管作用
功率(物理)
程序设计语言
数学
作者
Yuxuan Liang,Meijia Qiu,Peng Sun,Wenjie Mai
出处
期刊:Chemical Science
[The Royal Society of Chemistry]
日期:2024-01-01
卷期号:15 (4): 1488-1497
被引量:2
摘要
To tackle the shortcomings of traditional battery systems, there has been much focus on aqueous Zn-ion batteries due to various advantages. However, they still suffer from poor stability of Zn anodes. Here, a methionine additive with unique Janus properties is proposed to regulate the behavior of the interface between Zn anodes and the electrolyte environment. Systematic characterizations as well as calculations elucidate that the Janus additive is adsorbed on the Zn anode via zincophilic -NH2, changing the structure of the electric double layer and breaking the hydrogen bonding network among H2O molecules through hydrophobic S-CH3. At the same time, it can induce preferential formation of Zn(101) with high reversibility. The above two functions contribute to the dendrite inhibiting ability of Zn anodes. As validated, fabricated Zn//Zn symmetric cells achieve stable cycles of 4500 h, 1165 h, and 318 h at 1, 5 and 10 mA cm-2/mA h cm-2, respectively. Furthermore, Zn//Cu asymmetric cells with an average coulombic efficiency of 98.9% for 2200 stable cycles can be realized. Finally, Zn//MnO2 full cells exhibit 79.9% capacity retention with an ultra-high coulombic efficiency of 99.9% for 1000 cycles, much better than that of the pure Zn(ClO4)2 system, indicating the great potential of this useful strategy in aqueous batteries.
科研通智能强力驱动
Strongly Powered by AbleSci AI