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通过隔离和交错的碳框架使长周期水性Zn-Mn₃O₄电池成为可能

Yujing Pan¹, Shiyong Zuo², Guo Ai³

¹Academy of Interdisciplinary Studies on Intelligent Molecules, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin, 300387, China.

|December 5, 2024

概括

研究人员开发了一种新的多孔氧化 (Mn3O4),与水性离子电池 (ZIB) 的碳框架相集成. 这种设计显著提高了电池动力学和循环稳定性,为高性能储能铺平了道路.

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:

氧化 (Mn3O4) 显示出水性离子电池 (ZIB) 的潜力,这是由于其高理论容量和环保性.
实际的ZIB应用受到反应动力学缓慢和容量保留不足的限制.

研究的目的:

为了提高Mn3O4的电化学性能,用于ZIBs.
为了应对基于Mn3O4的ZIB中缓慢的动力学和容量退化的挑战.

主要方法:

使用碳纳米管 (CNTs) 的现场水合组装,制造带有分离和交织的碳框架 (HCF-Mn3O4) 的多孔Mn3O4.
材料的结构,形态和电化学性质的表征.

主要成果:

HCF-Mn3O4结构提供了增强的电子导电和加速的Zn2+运输.
在0.05A g-1时达到474 mAh g-1的高特异性容量和出色的速率能力 (178 mAh g-1在1.50 A g-1).
经过3000个周期的稳定循环演示,容量衰减最小 (每周期约0.02%).

结论:

集成的多孔结构有效地改善Zn2+扩散动力学和循环稳定性.
这种HCF-Mn3O4设计为开发高速率,持久的水性ZIB提供了一个有希望的策略.

关键词:

在 Mn3O4 中.水性离子电池水性离子电池碳框架碳框架碳框架

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