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Journal of Colloid and Interface Science

Journal of Colloid and Interface Science

IF: 9.4
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A scalable, robust, and highly oriented flexible composite film inspired by a “brick–mortar” pillared structure for lithium ion batteries

Published:10 December 2024 DOI: 10.1016/j.jcis.2024.12.060 PMID: 39673930
Yanlin Zhang,?Junhong Lu,?Weizuo Li,?Jie Huang,?Haoyang Jiang,?Ben Liang,?Benyuan Wang,?Dafang He,?Haiqun Chen

Abstract

Macro-assembled silicon-based films can be taken into account as a possible anode material for the lithium ion batteries (LIBs) in portable electronics. However, most previously proposed preparation strategies are labor-intensive, intricate, and not appropriate for large-scale manufacturing. Herein, a multifunctional flexible silicon/carbon nanotube/reduced graphene oxide (Si/CNT/rGO) film was fabricated by one-step coating method based on the lyotropic nematic liquid crystals of graphene oxide (GO). The composite film's structure is made up of stacked rGO nanosheets, with nano-Si and CNT interspersed between the layers, resembling a "brick-mortar" pillared configuration. The prepared Si/CNT/rGO film demonstrates an exceptional tensile strength, reaching up to 134?MPa, and manifests commendable lithium storing properties in terms of initial charge capacity (1885?mAh/g at 200?mA/g) and cyclability (1376.4?mAh/g beyond 200 cycles). The straightforward preparation method offers a fresh path to create stable and mechanically robust composite film for advanced engineering applications.

Substances (1)

Materials
Procduct Name CAS Molecular Formula Supplier Price
Ammonium hydroxide 1336-21-6 H5NO 749 suppliers $14.56-$1970.00

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