Anhydrous Fast Proton Transport Boosted by the Hydrogen Bond Network in a Dense Oxide-Ion Array of α-MoO3

Zihan Ma, Xiang Mei Shi, Shin ichi Nishimura, Seongjae Ko, Masashi Okubo, Atsuo Yamada*

*この研究の対応する著者

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Developing high-power battery chemistry is an urgent task to buffer fluctuating renewable energies and achieve a sustainable and flexible power supply. Owing to the small size of the proton and its ultrahigh mobility in water via the Grotthuss mechanism, aqueous proton batteries are an attractive candidate for high-power energy storage devices. Grotthuss proton transfer is ultrafast owing to the hydrogen-bonded networks of water molecules. In this work, similar continuous hydrogen bond networks in a dense oxide-ion array of solid α-MoO3 are discovered, which facilitate the anhydrous proton transport even without structural water. The fast proton transfer and accumulation that occurs during (de)intercalation in α-MoO3 is unveiled using both experiments and first-principles calculations. Coupled with a zinc anode and a superconcentrated Zn2+/H+ electrolyte, the proton-transport mechanism in anhydrous hydrogen-bonded networks realizes an aqueous MoO3–Zn battery with large capacity, long life, and fast charge–discharge abilities.

本文言語English
論文番号2203335
ジャーナルAdvanced Materials
34
34
DOI
出版ステータスPublished - 2022 8月 25

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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