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-石二元合金使高性能水性离子电池成为可能

Yingxiao Du¹, Yang Feng², Ruotong Li¹

¹School of Chemical Engineering, North China University of Science and Technology, Tangshan, 063009, China.

Small (Weinheim an der Bergstrasse, Germany)

|December 6, 2023

概括

这项研究引入了一种新型的-合金阳极 (Zn@Bi),可以有效地防止水性离子电池 (AZIB) 中的树生长. @Bi阳极增强了电池的稳定性和寿命,为更安全,更耐用的储能解决方案铺平了道路.

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:

阳极中的树矿形成和副作用限制了水性离子电池 (AZIB) 的性能和寿命.
开发稳定高效的阳极材料对于推进AZIB技术至关重要.

研究的目的:

为AZIBs合成和评估一种新的-合金阳极 (Zn@Bi).
调查木的结合减轻了树突的形成,并提高了电化学性能的机制.

主要方法:

合成Zn@Bi合金阳极的融合方法.
电化学表征,包括对称细胞循环和全细胞性能测试.
有限元素模拟和理论计算,以了解离子沉积和吸附行为.

主要成果:

Zn@Bi 阳极呈现出高百分比的 Zn(002) 晶体表面,促进了均的沉积.
石添加有效抑制演变反应和阳极腐蚀.
Zn@Bi//Zn@Bi对称细胞实现了1000小时的循环寿命.
一个Zn@Bi//MnO2全细胞在1700个循环后在1.2 A g-1.1下保持了119.3 mAh g-1的特定容量.

结论:

@Bi合金阳极是开发无树和持久的AZIB的有希望的候选者.
该研究表明,通过合金设计和表面工程来提高阳极稳定性的可行策略.
这项工作有助于推进更安全,更高效的水性可充电电池.

关键词:

分配策略的分配策略.阳极是一种极.水性离子电池水性离子电池毕斯穆特 (bismuth) 是一种天然气.

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