Understanding of Open-circuit voltage and Volume Change depending on the Electrochemical Properties of Anode Materials for Li-ion battery

Ji, Sang-Gu; Umirov, Nurzhan; Kim, Hyang Yeon; Kim, Sung‐Soo

doi:10.53619/kobs.2021.06.1.1.1

Cited by 1 publication

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“…Silicon (Si) has extensively been investigated as promising anode materials due to its high theoretical capacities. However, Si-based anode materials suffers from rapid capacity loss due to the mechanical failure induced by significant volume changes during lithiation and de-lithiation [2]. To address this issue, many innovative methods have been developed, including design and engineering of electrode architectures and functional binders [3,4].…”

Section: Introductionmentioning

confidence: 99%

Thermally Crosslinked Polyimide Binders for Si-alloy Anodes in Li-ion Batteries

Chang

Rho

et al. 2022

J. Electrochem. Sci. Technol

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Silicon (Si) has attracted considerable attention due to its high theoretical capacity compared to conventional graphite anode materials. However, Si-based anode materials suffer from rapid capacity loss due to mechanical failure caused by large volume change during cycling. To alleviate this phenomenon, crosslinked polymeric binders with strong interactions are highly desirable to ensure the electrode integrity. In this study, thermally crosslinked polyimide binders were used for Si-alloy anodes in Li-ion batteries. The crosslinked polyimide binder was found to have high adhesion strength, resulting in enhanced electrode integrity during cycling. Therefore, the Si-alloy anodes with crosslinked polyimide binder provide enhanced electrochemical performance, such as Coulombic efficiency, capacity retention, and cycle stability.

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Section: Introductionmentioning

confidence: 99%