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リチウム・アンチモニー・鉛の液体金属電池は,グリッドレベルのエネルギー貯蔵用のものです
Kangli Wang1, Kai Jiang1, Brice Chung1
1Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, USA.
Nature
|September 26, 2014
まとめ
新しいリチウム-アンチモニー-鉛の液体金属電池は,グリッド規模のエネルギー貯蔵のための費用対効果の高いソリューションを提供します. この革新的な設計は,高い効率と長期的な信頼性を誇っており,再生可能エネルギー源の統合に不可欠です.
科学分野:
- 電気化学 電気化学について
- マテリアルサイエンス 材料科学
- エネルギー貯蔵 エネルギー貯蔵
背景:
- ネットワーク規模のエネルギー貯蔵は,信頼性と風力や太陽光などの再生可能エネルギー源の統合に不可欠です.
- バッテリーは,コンパクトなサイズと場所の柔軟性のために有望ですが,高いコストが採用を妨げています.
- 液体金属電池は,大規模なアプリケーションでは,従来の電池に比べて潜在的な利点を提供しています.
研究 の 目的:
- 静止型エネルギー貯蔵用の新型リチウム・アンチモニー・鉛液体金属電池の開発と評価.
- この新しいバッテリー化学の性能,効率,および長期的な安定性を評価するために.
- ネットワーク規模のバッテリーソリューションのコスト削減戦略を探求する.
主な方法:
- 液体電極 (リチウムとアンチモンの鉛合金) と溶融塩の電解質を備えたLiidiyeSb-Pb電池の構築.
- バッテリーの性能を450°Cでテストし,さまざまな電流密度で充電-放電サイクルを含む.
- 長期の容量維持を予測するための加速老化テスト.
主要な成果:
- リヒジジジドSb-Pb電池は98%のクーロンビック効率と73%の往復エネルギー効率を275mA/cm2で実証しました.
- セルには高出力の能力があり,1000mA/cm2までの電流密度に耐えることができました.
- 予測される容量維持は,10年間の毎日のサイクリング後に85%を超え,1,800時間の運用で最小限の損失があります.
結論:
- 液体金属電池のLi , Sb , Sb-Pbは,静止エネルギー貯蔵のための性能仕様を満たしています.
- 鉛とアンチモンを合金することで,高電圧の電池を維持しながら,動作温度とコストを低下させます.
- このアプローチは,先進的なバッテリー化学とグリッド規模のエネルギー貯蔵のための有望で費用対効果の高い経路を提供します.
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