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Updated: Jul 17, 2025

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

Published on: February 1, 2016

超稳定的石墨阳极通过结合剂化学.

Zhifei Mao¹, Xiaojun Shi¹, Taoqiu Zhang¹

¹Department Faculty of Material and Chemistry, China University of Geosciences, Wuhan, 430074, China.

Small (Weinheim an der Bergstrasse, Germany)

|August 31, 2023

概括

研究人员使用聚乙醇 (PVA) 粘合剂开发了用于离子电池的稳定石墨阳极. 这种用PVA增强的阳极显示出极好的循环寿命和高初始库伦比效率,提高了电池性能.

关键词:

阳极是一种极.粘合剂粘合剂粘合剂石墨烯酸石墨是一种石墨.聚乙醇的使用情况.离子电池离子电池

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Last Updated: Jul 17, 2025

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Published on: February 1, 2016

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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:

由于其高容量,石墨是离子电池 (PIB) 的有前途的阳极材料.
然而,石墨阳极在离子 (K +) 储存期间遭受快速容量衰变,限制了它们的实际应用.

研究的目的:

为高性能PIB开发一种超稳定的石墨阳极.
研究粘合剂化学在提高阳极稳定性和性能方面的作用.

主要方法:

使用聚乙醇 (PVA) 作为石墨阳极的水溶性粘合剂.
研究了在石墨表面上形成一个强大的,富含KF的固体电解质介相 (SEI) 膜的形成.
将PVA结合阳极的性能与使用聚乙烯化物 (PVDF) 的阳极进行了比较.

主要成果:

聚乙烯粘合剂促进了富含KF的统一而坚固的SEI膜的形成,抑制了电解质分解,并适应了体积膨胀.
基于PVA的石墨阳极在2000个循环中显示出97%的容量保留在C/3速率下.
使用PVA实现了高初始库伦比克效率 (ICE) 81.6%,明显高于PVDF (40.1%).
使用PVA的3D打印的石墨和酸K离子电池实现了8.9 mWh cm-2.2的记录面积能量.

结论:

结合剂化学在开发高性能PIB方面发挥着至关重要的作用.
乙烯是一种有效的粘合剂,用于创建稳定的石墨阳极,提高循环寿命和效率.
开发的基于PVA的石墨阳极技术对先进的离子电池应用具有重大潜力.