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3D层次式碎形结构稳定阳极,以实现水性离子电池的长期循环寿命

Mengxuan Sun¹, Yongxiu Sun¹, Nengze Wang²

¹School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, PR China.

Journal of colloid and interface science

|November 24, 2023

概括

用于水性离子电池 (AZIB) 的新型3D分离体阳极 (ZZCC) 有效地抑制了树的生长. 这项创新显著提高了电池循环稳定性和安全性,用于下一代能源存储.

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:

水性Zn离子电池 (AZIB) 面临的挑战是循环稳定性,由于树脂的生长和副作用反应.
开发稳定的阳极对于AZIBs的实际应用至关重要.

研究的目的:

为AZIBs设计和制造一个分层的3D碎形阳极结构.
研究这种结构对沉积和电池性能的影响.

主要方法:

一个涉及热氧化和电的两步过程被用于创建ZnO/Zn/Cu_xO@Cu (ZZCC) 阳极.
组装和测试了基于ZZCC的对称细胞和带有MnVO@rGO阴极的全AZIB.

主要成果:

ZZCC阳极在对称细胞中表现出长期循环稳定性 (3000小时在1mA cm-2).
使用ZZCC阳极的AZIB表现出更好的循环能力 (88.5%容量保留) 和高库伦比克效率 (99.4%在2Ag-1).
三维碎形结构有效调节了涂层,并抑制了树岩的形成.

结论:

层次的3D碎形阳极策略显著提高了AZIBs的周期稳定性.
这种方法为开发更安全,更持久的AZIB提供了一个有希望的途径.

关键词:

3D主机是一个3D主机.阳极是一种极.消极化层是一种消极化层.Zn 树突石树突石树突石这是一种离子电池.

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