非線形パイロエレクトリックモジュールで集めた大きなエネルギー

Pierre Lheritier¹, Alvar Torelló^2,3, Tomoyasu Usui⁴

¹Materials Research and Technology Department, Luxembourg Institute of Science and Technology (LIST), Belvaux, Luxembourg.

Nature

|September 13, 2022

まとめ

研究者は鉛タンタラートを用いた火力発電の熱エネルギーハーベスターを開発した. この装置は熱を効率的に電気に変換し自動運転システムに持続可能なエネルギー源を提供します

科学分野:

材料科学
エネルギー収集
固体物理学

背景:

持続可能な発電は世界的に重要な課題です
熱電材料は温度変動を電気に変換しますが,ジョウルの範囲の収穫能力がありません.
既存の材料と装置は,大規模な熱エネルギー収集には不十分です.

研究の目的:

ジュールの範囲で電力を生み出すことができるマクロスコープの火力発電機を開発する.
自律的な装置を動かすための火力発電材料の可能性を実証する.
パイロ電動の多層電容器を使用して高エネルギー変換効率を達成する.

主な方法:

42gの鉛タンタレットを多層コンデンサとして使用したマクロスコープの熱エネルギーハーベスターの製造.
熱力学サイクル毎の装置の電気出力の特徴とエネルギー密度.
マイクロコントローラとセンサーを搭載した自律的なエネルギーシステムにハーベスターの能力をテストします
エネルギー変換効率とカーノ効率の評価

主要な成果:

ハーベスターは熱力学サイクル毎に11.2Jの電力を生産します.
個々の火電モジュールは,サイクル毎に4.43Jcm−3のエネルギー密度を達成する.
2つの小さなモジュール (0.3g) で,自律的なエネルギーハーベスターを持続的に動かすことができます.
10Kの温度範囲でカーノーの効率の40%に達する.

結論:

顕微鏡でスケーラブルで効率的な火力発電機は今や実現可能だ
これらの装置は熱から電力を生み出すための有望な道を提供します.
この高い性能は,フェロ電気的相転換,低漏れ電流,および高解散電圧に起因する.

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