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Enabling Silicon Anodes with Novel Isosorbide-Based Electrolytes

Journal Article · · ACS Energy Letters
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  1. Argonne National Laboratory (ANL), Lemont, IL (United States)
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Silicon is seen as one of the most promising anode candidates for next-generation lithium-ion batteries, due to its high theoretical capacity and energy density. However, many technical barriers remain to its implementation, due to its high chemical/electrochemical reactivities with standard electrolytes and incomplete passivation from large volume changes. Herein, we report an isosorbide dimethyl ether (IDE) based electrolyte, which exhibits greatly improved stability, as evidenced by long cycle life and calendar life. An analysis of the cycled silicon surface shows minimal decomposition of organic species from IDE solvent, confirming that the electrolyte maintains a limited chemical reactivity with nucleophilic lithiated silicon (LixSi). Here, this research opens up new avenues for designing new electrolytes which could ultimately enable the practical application of silicon anodes.
Research Organization:
Argonne National Laboratory (ANL), Lemont, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1923258
Journal Information:
ACS Energy Letters, Journal Name: ACS Energy Letters Journal Issue: 2 Vol. 7; ISSN 2380-8195
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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