阳极
法拉第效率
材料科学
成核
锌
水溶液
沉积(地质)
电解质
化学工程
金属
剥离(纤维)
纳米技术
冶金
化学
电极
复合材料
古生物学
有机化学
物理化学
沉积物
生物
工程类
作者
Jinlin Zhu,Wenjun Deng,Na Yang,Xianqi Xu,Chao Huang,Yi Zhou,Man Zhang,Xinran Yuan,Jun Hu,Chang Li,Rui Li
出处
期刊:Small
[Wiley]
日期:2022-06-24
卷期号:18 (29)
被引量:25
标识
DOI:10.1002/smll.202202509
摘要
Aqueous zinc-ion batteries (ZIBs) have been extensively studied due to their inherent safety and high energy density for large-scale energy storage. However, the practical application is significantly limited by the growing Zn dendrites on metallic Zn anode during cycling. Herein, an environmental biomolecular electrolyte additive, fibroin (FI), is proposed to guide the homogeneous Zn deposition and stabilize Zn anode. This work demonstrates that the FI molecules with abundant electron-rich groups (NH, OH, and CO) can anchor on Zn anode surface to provide more nucleation sites and suppress the side reactions, and the strong interaction with water molecules can simultaneously regulate the Zn2+ coordination environment facilitating the uniform deposition of Zn. As a consequence, only 0.5 wt% FI additive enables a highly reversible Zn plating/stripping over 4000 h at 1 mA cm-2 , indicating a sufficient advance in performance over state-of-the-art Zn anodes. Furthermore, when applied to a full battery (NaVO/Zn), the cell exhibits excellent capacity retention of 98.4% after 1000 cycles as well as high Coulombic efficiency of 99%, whereas the cell only operates for 68 cycles without FI additive. This work offers a non-toxic, low-cost, effective additive strategy to solve dendrites problems and achieve long-life and high-performance rechargeable aqueous ZIBs.
科研通智能强力驱动
Strongly Powered by AbleSci AI