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太陽エネルギー貯蔵と放出のための水/酸素循環ベースの生物光電化学システム

He Zhang^1,2, Liang Huang^1,2, Junfeng Zhai¹

¹State Key Laboratory of Electroanalytical Chemistry , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , People's Republic of China.

Journal of the American Chemical Society

|September 27, 2019

まとめ

研究者らは,水と酸素の循環を利用した,新しいバイオフォト電気化学システム (BPECS) を開発しました. この革新的な装置は,太陽エネルギーを効率的に変換することで,暗闇でも継続的に電力を供給します.

科学分野:

再生可能エネルギーシステム
電気化学工学
材料科学

背景:

人工光電化学装置は,太陽光の断続性のために一貫した電力を供給する上で課題に直面しています.
既存の光電化学セル (PEC) は,エネルギー貯蔵ソリューションと統合されていないことが多い.
ソーラーエネルギー収集と貯蔵のための堅牢なシステムの開発は,グリッドスケールのアプリケーションにとって不可欠です.

研究の目的:

水/酸素循環ベースのバイオフォト電気化学システム (BPECS) の設計と実証
光バイオ燃料電池 (PBFC) に電容器電極を統合することによって,太陽エネルギーの断続的な性質に対処します.
人工PECデバイスの太陽光断続性に対処するための互換性と実現性を向上させる.

主な方法:

ポリピロール (PPy) コンデンサー電極を光バイオ燃料セル (PBFC) に組み込み,BPECSを作成する.
本質的な安全性と費用対効果のために自己循環水/酸素システムの導入.
太陽光から化学/電気,化学から電気の2段階の代替エネルギー変換プロセスを利用します.

主要な成果:

BPECSは最大出力密度0.34 ± 0.01 mW cm−2 (光) と0.19 ± 0.02 mW cm−2 (暗) を達成した.
効率的な太陽エネルギー貯蔵と放出のために,安定した長期サイクリング性能を示しています.
このシステムは,統合された設計によって高効率の太陽エネルギー利用を示した.

結論:

開発されたBPECSは,発電のための太陽光断続性を克服するための実現可能で本質的に安全なアプローチを提供します.
このモジュラーで統合されたシステムの設計は,PEC,BFC,およびコンデンサータデバイスの互換性を改善します.
BPECSは,グリッドスケールでの太陽光発電エネルギー貯蔵と将来の人工バイオフォト電気化学システムの大きな可能性を秘めています.

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