{"title":"Nanosecond laser structuring for improving rate capability of lithium iron phosphate cathode","authors":"Dongkyu Park , Dongkyoung Lee","doi":"10.1016/j.jsamd.2024.100840","DOIUrl":null,"url":null,"abstract":"<div><div>LiFePO<sub>4</sub> cathode's low-capacity retention at high current rates is due to its low electrical conductivity. To address this, a three-dimensional cathode was fabricated using a nanosecond laser. Its performance was studied based on groove aspect ratios (0.39, 0.96) and pitch distances (112 μm, 224 μm). Groove morphology varied with laser parameters. Cathodes with higher aspect ratios exhibited lower internal resistance. However, capacity decreased as groove pitch distance narrowed. The normalized specific capacity of the 3D cathode with an aspect ratio of 0.36 and a pitch distance of 224 μm was 6% higher than that of an unstructured cathode at a 2C rate.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 1","pages":"Article 100840"},"PeriodicalIF":6.7000,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Science: Advanced Materials and Devices","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2468217924001710","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
LiFePO4 cathode's low-capacity retention at high current rates is due to its low electrical conductivity. To address this, a three-dimensional cathode was fabricated using a nanosecond laser. Its performance was studied based on groove aspect ratios (0.39, 0.96) and pitch distances (112 μm, 224 μm). Groove morphology varied with laser parameters. Cathodes with higher aspect ratios exhibited lower internal resistance. However, capacity decreased as groove pitch distance narrowed. The normalized specific capacity of the 3D cathode with an aspect ratio of 0.36 and a pitch distance of 224 μm was 6% higher than that of an unstructured cathode at a 2C rate.
期刊介绍：
In 1985, the Journal of Science was founded as a platform for publishing national and international research papers across various disciplines, including natural sciences, technology, social sciences, and humanities. Over the years, the journal has experienced remarkable growth in terms of quality, size, and scope. Today, it encompasses a diverse range of publications dedicated to academic research.
Considering the rapid expansion of materials science, we are pleased to introduce the Journal of Science: Advanced Materials and Devices. This new addition to our journal series offers researchers an exciting opportunity to publish their work on all aspects of materials science and technology within the esteemed Journal of Science.
With this development, we aim to revolutionize the way research in materials science is expressed and organized, further strengthening our commitment to promoting outstanding research across various scientific and technological fields.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
