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先进的3D打印氨瓦纳/rGO气凝阴极用于耐用和高容量的离子电池

Zhixia Duan¹, Xiaoling Zhang², Junmin Xu¹

¹Key Laboratory of Materials Physics, Ministry of Education School of Physics, Zhengzhou University, Zhengzhou, 450001, China.

Small (Weinheim an der Bergstrasse, Germany)

|August 22, 2024

概括

一个新的3D打印的微网状气凝阴极,由富含氧气空隙的氨瓦纳酸盐/减少的石墨烯氧化物 (KNVOv/rGO) 制成,显著提高离子电池的性能和灵活性.

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:

开发高性能阴极对于推进离子电池 (KIB) 的发展至关重要.
现有的KIB阴极材料经常面临稳定性和离子传输方面的挑战.
3D打印提供了一种新的方法来设计电极架构,以提高电池性能.

研究的目的:

设计和制造一个3D打印的氧气空位丰富的氨瓦纳酸盐/减少的氧化石墨烯 (KNVOv/rGO) 微晶网气凝用于KIB阴极.
研究3D打印电极的电化学特性和结构优势.
评估使用这种先进阴极材料的KIB的性能,包括灵活性和长期循环稳定性.

主要方法:

使用KNVOv/rGO.制造3D打印的微网状气凝电极.
电极微观结构的表征,包括纳米带,石墨烯纳米片和微孔.
用3D打印的电极对KIB进行电化学测试,包括静电循环和速率能力测试.
评估弹性电池在变形下的机械耐用性.

主要成果:

3D打印的KNVOv/rGO电极呈现出一个明确的多孔微晶格结构,并具有相互连接的导电路径.
电极在50 mA g-1下表现出109.3 mAh g-1的高放电容量,在200个循环后92.6%的保留率.
观察到优异的长期循环稳定性,在2000个循环后在500 mA g-1.1下保持75.8 mAh g-1.
灵活的袋式KIB显示出良好的机械耐用性,并在曲和折叠时保持高的特定容量.

结论:

3D打印的KNVOv/rGO微网状气凝作为高性能KIB的高效阴极材料.
独特的3D架构增强了电解质透,离子运输和电化学稳定性.
这项工作突显了将3D打印材料整合到灵活和可穿戴的储能设备中的潜力.

关键词:

通过3D打印打印3D打印.KNVOv/rGO微格式气凝灵活的离子电池灵活的离子电池

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