Precision pre-lithiated graphite anode for lithium-ion capacitors with exceptional high-temperature cycling stability

Pre-lithiation technology is essential for lithium-ion capacitors to have high voltage and cycle stability. In this work, we propose an in situ chemical pre-lithiation method, which can accurately control the depth of pre-lithiation in the graphite anode. After 1,000 charge/discharge cycles at a hig...

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Bibliographic Details
Published in:Chemistry letters 2024-03, Vol.53 (3)
Main Authors: Yin, Hang, Tang, Jie, Zhang, Kun, Lin, Shiqi, Xu, Guangxu, Hato, Yukinori
Format: Article
Language:English
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Summary:Pre-lithiation technology is essential for lithium-ion capacitors to have high voltage and cycle stability. In this work, we propose an in situ chemical pre-lithiation method, which can accurately control the depth of pre-lithiation in the graphite anode. After 1,000 charge/discharge cycles at a high temperature of 65 °C, the lithium-ion capacitor still has 85% discharge capacity. The anode using this pre-lithiation method was found to have a stable potential after cycling.
ISSN:0366-7022
1348-0715
DOI:10.1093/chemle/upae027