高可逆锡膜阳极通过高能水性酸电池的接口协调效应引导
Diyu Xu1, Haozhe Zhang2, Jinhao Xie1
1MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, The Key Lab of Low-carbon Chem & Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|June 26, 2024
概括
这项研究引入了一种薄膜锡 (Sn) 阳极,用于水性电池,使用4 - 特-奥基五氧酸盐 (POPE) 添加剂. 这种方法通过防止进化和金属脱落来提高稳定性和性能.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 锡 (Sn) 是水性酸性电池的一个有前途的阳极材料,因为它具有有利的特性.
- 阳极的挑战包括形态不佳,进化和金属脱落,限制稳定性和容量.
研究的目的:
- 为水性电池开发一种稳定且高容量的薄膜Sn阳极.
- 为了解决进化和Sn阳极中的金属脱落问题.
主要方法:
- 作为一个电解质添加剂,利用了4-tert-octylphenol pentaethoxylate (POPE).
- 研究了POPE通过协调键在Sn表面的吸附机制.
- 分析了POPE对Sn2+溶解和进化抑制的作用.
主要成果:
- 产生了一个薄膜Sn阳极,具有可逆的剥离/合行为.
- 实现了均的表面化学,并抑制了的进化.
- 经过480小时的电化学稳定性改进,具有令人满意的速率性能和低极化.
- 该PbO2//Sn电池在10 mAh cm−2.2. 时表现出卓越的耐用性.
结论:
- POPE有效地将多面体Sn粒子转化为稳定的薄膜阳极.
- 开发的Sn薄膜阳极为水性电池提供了增强的电化学稳定性和性能.
- 这项工作为设计可逆的Sn金属阳极提供了新的策略.
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