Multifunctional analysis of novel aluminum-ion structural battery composites with optimization in cathode material

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2025-04-18 DOI:10.1016/j.coco.2025.102410

Jingkang Wang , Jinrui Wang , Xuyang Wang , Lei Tian , Zhendong Liu , Qin Lei , Dongzhi Wang , Jinrui Ye

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引用次数: 0

Abstract

Structural battery composites are promising structural energy storage solution receiving growing attention. Graphite intercalation compounds rechargeable battery utilizing aluminum chloride ions is considered for application in structural battery composites for resource abundancy and high safety. However, the severe volume expansion of traditional graphite cathodes during cycling significantly poses threats to long-term performance of structural battery composites. In this work, we develop aluminum-ion structural battery composites using vacuum infusion process and compare the electrochemical and mechanical performance of structural battery composites incorporating few-layer graphene and natural graphite cathode materials respectively. The structural battery composites utilize carbon fibers coated with the active materials as both electrode and reinforcing material. It is demonstrated that employing few-layer graphene instead of conventional natural graphite as the active material effectively alleviates the volume expansion issues during cycling, improving the flexural strength attenuation rate of the structural battery composites significantly from 91 % to 23.3 % after 30 cycles. Additionally, structural battery composites utilizing few-layer graphene coating exhibit impressive mechanical properties with a tensile strength of 299.4 MPa and tensile modulus of 22.12 GPa, while maintaining energy density of 22.58 Wh/kg based on the weight of active materials (8.3 Wh/kg for whole cell).

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新型铝离子结构电池复合材料的多功能分析及正极材料优化

结构电池复合材料是一种很有前途的结构储能解决方案，受到越来越多的关注。利用氯化铝离子的石墨嵌层化合物可充电电池是一种资源丰富、安全性高的结构电池复合材料。然而，传统的石墨阴极在循环过程中严重的体积膨胀对结构电池复合材料的长期性能构成了严重的威胁。本文采用真空灌注工艺制备了铝离子结构电池复合材料，并比较了采用少层石墨烯和天然石墨正极材料制备的结构电池复合材料的电化学性能和力学性能。结构电池复合材料利用涂覆活性材料的碳纤维作为电极和增强材料。研究表明，采用少层石墨烯代替传统的天然石墨作为活性材料，有效缓解了循环过程中的体积膨胀问题，30次循环后，结构电池复合材料的弯曲强度衰减率从91%显著提高到23.3%。此外，利用少层石墨烯涂层的结构电池复合材料表现出令人印象深刻的机械性能，抗拉强度为299.4 MPa，拉伸模量为22.12 GPa，同时基于活性材料的重量保持22.58 Wh/kg的能量密度（整个电池8.3 Wh/kg）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.