アロマティック構造を持つ超音波ガラス型リ+導体のAI支援調査
Kan Hatakeyama-Sato1, Toshiki Tezuka1, Momoka Umeki1
1Department of Applied Chemistry , Waseda University , Tokyo 169-8555 , Japan.
Journal of the American Chemical Society
|January 16, 2020
まとめ
研究者は,固体ポリマー電解質のリチウムイオン伝導性を予測するために,大規模なデータベースとグラフニューラルネットワークを開発しました. このアプローチにより,高度なエネルギー材料の可能性を持つ新しい超音波導体が見つかりました.
科学分野:
- 材料科学
- 電気化学
- コンピュータ化学
背景:
- ポリマー電解質のような 複雑な化学システムの性質を予測するのは 難しいことです
- 既存の方法は新しい物質の発見に 精度が欠けていることが多いのです
研究 の 目的:
- リチウム伝導性固体ポリマー電解質の 最大のデータベースを作成します
- イオン伝導性の正確な予測モデルを開発する.
- 新しい超音波伝導物質を発見するために
主な方法:
- リチウム伝導性固体ポリマー電解質の データベースを作りました
- 伝導性の予測のために,移転学習グラフニューラルネットワーク (GNN) を採用した.
- GNNの予測を分析し,有望な材料候補を特定した.
主要な成果:
- イオン伝導性を予測する高精度 (MAE <1 logarithmicスケール) を達成した.
- アロマティックポリマーの電荷移転複合体に基づく超イオン導体を発見した.
- 高いイオン伝導性 (室温で~10−3 S/cm) を示すガラスのようなポリマー電解質を特定した.
結論:
- 機械学習,特にGNNは 固体ポリマー電解質の性質を正確に予測できます
- 新しいガラスのようなポリマーの電解質は 素早くイオンを輸送し 安定性を高めます
- このアプローチは予期せぬ化学現象と エネルギー材料のパラダイムシフトの発見を容易にする.
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