早稲田大学 · 工学
Toshiyuki Momma教授の研究室では、リチウムイオン電池や固体電池の高効率化を目的とした新規電極材料の開発を進めています。特に、室温での化学的プリリチウム化技術や、ポリマー電極と固体電解質の界面制御に注力しており、高容量・高安定性なリチウム硫化物電極の実現を目指しています。また、ナフィオンをドーピングしたポリピロール電極を用いたイオン拡散の向上手法の解明も進んでいます。
Figures are computed from collected data and may differ slightly.
This work reports a new chemical pre-lithiation method to fabricate lithium sulfide (Li2S) cathode. This pre-lithiation process is taken place simply by dropping the organolithium reagent lithium naphthalenide (Li+Naph−) on the prepared sulfur cathode. It is the first time realizing the room temperature chemical pre-lithaition reaction attributed by the 3D nanostructured carbon nanotube (CNT) current collector. It is confirmed that the Li2S cathode fabricated at room temperature showing higher c
Nafion® was introduced into a polypyrrole (PPy) matrix, and the redox performance of the PPy/Nafion electrode was investigated in a poly(ethylene oxide) electrolyte. A rougher interface between polymer cathode and polymer electrolyte is usually needed for an all‐solid battery, however, the PPy/Nafion cathode works well regardless of the flat surface of the PPy/Nafion film. When compared to a PPy film doped with anions with a similar morphology, the PPy/Nafion film showed better redox performance
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