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Updated: May 10, 2025

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上循环消耗的离子电池:为氧电池构建具有远程顺序和短程障碍的双功能催化剂

Yu Tian¹, Yongbin Xu¹, Shan Guo¹

¹College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-Performance Carbon-Materials, Qingdao University of Science & Technology, Qingdao, 266061, P. R. China.

Advanced materials (Deerfield Beach, Fla.)

|April 25, 2025

概括

从使用过的离子电池中回收金属,用于氧电池的新基催化剂,显著提高了性能. 这种上循环方法创造了稳定,高度活跃的正极材料,用于下一代储能.

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
可持续能源可持续能源

背景情况:

从废弃的三元离子电池 (LIB) 中回收贵金属 (Ni,Co,Mn) 来用于氧 (Li-O2) 电池阴极是可取的,但具有挑战性.
用O2阴极催化剂将回收金属与 (Pt) 合金化是一个尚未探索的领域.

研究的目的:

开发一种新的L12型Pt3M中金属间纳米粒子催化剂.
为了研究催化剂在O2电池中的性能,使用使用过的LIBs的回收金属.
探索结构-活性关系,以提高催化性能.

主要方法:

合成L12-Pt3(Ni1/3Co1/3Mn1/3)@N-C催化剂被限制在使用过的LiNi1-x-yMnyCoxO2阴极中的N-化碳基质上.
使用实验技术和理论计算进行表征,以分析结构,电子特性和催化机制.
在Li-O2电池电池中对催化剂进行电化学测试,以评估性能指标,如超电位和循环寿命.

主要成果:

成功合成了一种新型L12型Pt3(Ni1/3Co1/3Mn1/3)@N-C催化剂,具有长距离有序和短距离无序特征.
通过无序的Ni,Co和Mn原子证明了Pt电子结构和协调环境的调制,增强了对氧中间体的亲和力.
在Li-O2电池中实现了超低的超电位 (0.48V) 和出色的循环稳定性 (220个周期在400 mA g-1).

结论:

开发的催化剂有效地利用废弃LIBs中的回收金属用于先进的Li-O2电池应用.
结合L12结构和无序的金属位点,提供了卓越的催化活性和稳定性.
这项工作为下一代电池的回收策略和催化剂设计提供了宝贵的见解.

关键词:

催化动力学的催化动力学高价值金属是高价值的金属.氧电池是一种氧电池.回收回收是回收的方法.使用过的离子电池.

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