強く相関するペロブスキート燃料電池
You Zhou1, Xiaofei Guan1, Hua Zhou2
1John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.
Nature
|June 10, 2016
まとめ
研究者らは,ペロブスキートニケラート電解質を用いた新しい固体酸化燃料電池 (SOFC) を開発した. 燃料電池の性能と耐久性を向上させる.
科学分野:
- 材料科学
- 電気化学
- 固体物理学
背景:
- 固体酸化物燃料電池 (SOFC) は,従来のエンジンよりも高い効率と環境上の利点を提供します.
- イットリア安定化ジルコニアは,その安定性のためにSOFCの主要な電解質材料です.
- 既存の電解質は,環境を縮小し,性能と耐久性に影響を与える電子漏れの問題に直面しています.
研究 の 目的:
- 伝統的なカチオン置換を超えたSOFCの代替電解質設計を探求する.
- SOFCにおける電解質としてのペロブスキートニケラートの使用を調査する.
- 新しい電解質戦略を用いた高性能低温SOFCを実証する.
主な方法:
- 電解質材料としてペロブスキートニケラートを使用した.
- 電子伝導を制御するために,自発的な水素組み込みを介してモット移行を誘導した.
- 試験用のフリースタンドの膜SOFCを製造した.
主要な成果:
- ペロブスキートニケラート電解質で高いイオン伝導性と電子伝導性を達成した.
- 水素によるモット変換による 電子漏れを抑制しました
- 高性能で低温のマイクロ製造されたSOFCを証明した.
結論:
- ペロブスキートニケラートは,SOFC電解体の有望な代替品です.
- 水素の組み込みによる電子相関の制御は,電解質設計の効果的な戦略です.
- このアプローチにより,耐久性と効率性の高い高性能SOFCが可能になります.
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