Liu Fangfang, Chuan Xiuyun
Key Laboratory of Orogenis Belts and Crustal Evolution, School of Earth and Space Sciences, Peking University Beijing 100871 China
RSC Adv. 2021 May 7;11(27):16633-16644. doi: 10.1039/d1ra02845f. eCollection 2021 Apr 30.
Lithium-ion batteries (LIBs) are currently the most widely used portable energy storage devices due to their high energy density and long lifespan. The separator plays a key role in the battery, and its function is to prevent the two electrodes of the battery from contacting, causing the internal short circuit of the battery, and ensuring the lithium ions transportation. Currently, lithium ion battery separators widely used commercially are polyolefin separators, such as polyethylene (PE) and polypropylene (PP) based separators. However, polyolefin separators would shrink at high temperatures, causing battery safety issues, and also causing white pollution. To solve these issues, the use of natural minerals to prepare composite separators for LIBs has attracted widespread attention owing to their unique nano-porous structure, excellent thermal and mechanical stability and being environmentally friendly and low cost. In this review, we present recent application progress of natural minerals in separators for LIBs, including halloysite nanotubes, attapulgite, sepiolite, montmorillonite, zeolite and diatomite. Here, we also have a brief introduction to the basic requirements and properties of the separators in LIBs. Finally, a brief summary of recent developments in natural minerals in the separators is also discussed.
锂离子电池（LIBs）由于其高能量密度和长寿命，目前是使用最广泛的便携式储能设备。隔膜在电池中起着关键作用，其功能是防止电池的两个电极接触，导致电池内部短路，并确保锂离子传输。目前，商业上广泛使用的锂离子电池隔膜是聚烯烃隔膜，例如基于聚乙烯（PE）和聚丙烯（PP）的隔膜。然而，聚烯烃隔膜在高温下会收缩，引发电池安全问题，还会造成白色污染。为了解决这些问题，利用天然矿物制备锂离子电池复合隔膜因其独特的纳米多孔结构、优异的热稳定性和机械稳定性以及环保和低成本而受到广泛关注。在这篇综述中，我们介绍了天然矿物在锂离子电池隔膜中的最新应用进展，包括埃洛石纳米管、凹凸棒石、海泡石、蒙脱石、沸石和硅藻土。在此，我们还简要介绍了锂离子电池隔膜的基本要求和性能。最后，还讨论了天然矿物在隔膜中的最新发展概况。
