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用于高性能锂离子电池的可持续、耐热和阻燃纤维素基复合隔膜。

Sustainable, heat-resistant and flame-retardant cellulose-based composite separator for high-performance lithium ion battery.

机构信息

Qingdao Key Lab of Solar Energy Utilization and Energy Storage Technology, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, P. R. China.

1] Qingdao Key Lab of Solar Energy Utilization and Energy Storage Technology, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, P. R. China [2] College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.

出版信息

Sci Rep. 2014 Feb 3;4:3935. doi: 10.1038/srep03935.

DOI:10.1038/srep03935
PMID:24488228
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3909895/
Abstract

A sustainable, heat-resistant and flame-retardant cellulose-based composite nonwoven has been successfully fabricated and explored its potential application for promising separator of high-performance lithium ion battery. It was demonstrated that this flame-retardant cellulose-based composite separator possessed good flame retardancy, superior heat tolerance and proper mechanical strength. As compared to the commercialized polypropylene (PP) separator, such composite separator presented improved electrolyte uptake, better interface stability and enhanced ionic conductivity. In addition, the lithium cobalt oxide (LiCoO2)/graphite cell using this composite separator exhibited better rate capability and cycling retention than that for PP separator owing to its facile ion transport and excellent interfacial compatibility. Furthermore, the lithium iron phosphate (LiFePO4)/lithium cell with such composite separator delivered stable cycling performance and thermal dimensional stability even at an elevated temperature of 120°C. All these fascinating characteristics would boost the application of this composite separator for high-performance lithium ion battery.

摘要

一种可持续、耐热和阻燃的纤维素基复合非织造布已被成功制备，并探索了其在高性能锂离子电池有前途的分离器中的潜在应用。结果表明，这种阻燃纤维素基复合隔膜具有良好的阻燃性、优异的耐热性和适当的机械强度。与商业化的聚丙烯（PP）隔膜相比，这种复合隔膜具有改善的电解质吸收性、更好的界面稳定性和增强的离子导电性。此外，由于其易于离子传输和优异的界面相容性，使用这种复合隔膜的钴酸锂（LiCoO2）/石墨电池表现出比 PP 隔膜更好的倍率性能和循环保持率。此外，具有这种复合隔膜的磷酸铁锂（LiFePO4）/锂电池即使在 120°C 的高温下也能提供稳定的循环性能和热尺寸稳定性。所有这些迷人的特性将推动这种复合隔膜在高性能锂离子电池中的应用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1345/3909895/d682a34573df/srep03935-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1345/3909895/5b407065002a/srep03935-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1345/3909895/8e7ad9a2e525/srep03935-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1345/3909895/d987a3993638/srep03935-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1345/3909895/1829f4e90751/srep03935-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1345/3909895/9ff98221ac44/srep03935-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1345/3909895/d682a34573df/srep03935-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1345/3909895/5b407065002a/srep03935-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1345/3909895/8e7ad9a2e525/srep03935-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1345/3909895/d987a3993638/srep03935-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1345/3909895/1829f4e90751/srep03935-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1345/3909895/9ff98221ac44/srep03935-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1345/3909895/d682a34573df/srep03935-f6.jpg

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