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纤维素材料在锂电池隔膜领域的研究进展

浏览次数: 日期:2019-01-04 17:23

Recent developments of cellulose materials for lithium-ion battery separators

Jie Sheng . Shuhua Tong . Zhibin He . Rendang Yang

Impact Factor: 3.809

Abstract: This paper reviews the recent developments of cellulose materials for lithium-ion battery separators. The contents are organized according to the preparation methods such as coating, casting, electrospinning, phase inversion and papermaking. The focus is on the properties of cellulose materials, research approaches, and the outlook of the applications of cellulose materials for lithium-ion batteries.

Keywords: Lithium-ion batteries  Separator  Cellulose  Preparation method

Fig. 1 Schematic illustration of the electrochemical process in a lithium-ion battery

Fig. 2 From the biomass sources to the cellulose molecules

Fig. 3 Illustrative diagram of the coating process

Fig. 4 Illustrative diagram of the casting process

Fig. 5 Illustrative diagram of the electrospinning process

Fig. 6 a Nyquist plots and b linear sweep voltammograms of the cells (Zhang et al. 2013)

Fig. 7 Illustrative diagram of the phase inversion process

Fig. 8 a Cyclic voltammetric curves; b typical charge–discharge curves; c rate behavior; and d cycling behavior (Zhu et al. 2015)

Fig. 9 Illustrative diagram of the papermaking process

Fig. 10 Cycle performance of the cells using a cellulose/ PDA separator (Xu et al. 2014) and b cellulose/PSA separator (Xu et al. 2013)

Summary

Recently, cellulose has received much attention in the application of LIB separators because of its good chemical and thermal stabilities. The studies in the literature have covered all major cellulose types: cellulose, nanocellulose, and cellulose derivatives. Cellulose can not only play a role as a supporter, an enhancer, and a gelator in LIB separators, but also be endowed novel functions by modification. The preparation methods for cellulose LIB separators include conventional coating, casting, electrospinning, phase inversion and papermaking, as well as ISISA and forcespinning. The papermaking method is a good choice for large-scale low-cost production.

With the increasingly stringent environmental requirements and diversified applications of LIBs, the use of cellulose materials for LIB separators is expected to be more extensive. However, the preparation method for cellulose LIB separators needs to be improved to decrease the production cost and reduce the environmental impact. The tensile strength (machine direction) and puncture strength of cellulose membranes should also be enhanced. Cellulose is hygroscopic, and cellulosic separators tend to have a higher moisture content which has a negative effect on the LIB performance. Functional modification and structural design of cellulose-based LIB separators are good directions for the next generation of highperformance/high-safety batteries.

全文下载链接:https://link.springer.com/article/10.1007/s10570-017-1421-8

所属类别: 主题沙龙

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