低分子量の有機アノライト材料の進化的設計,非水性レドックスフローバッテリーでの応用
Christo S Sevov1,2, Rachel E M Brooner1,2, Etienne Chénard1,3
1Joint Center for Energy Storage Research , Argonne, Illinois 60439, United States.
Journal of the American Chemical Society
|October 31, 2015
まとめ
研究者は,非水性酸化還元流電池のための新しいピリジンベースのアノライト材料を開発しました. これらの材料は低重量で安定した性能を提供し,費用対効果の高いグリッド規模のエネルギー貯蔵に不可欠です.
科学分野:
- 電気化学
- 材料科学
- エネルギー貯蔵
背景:
- 断続的な再生可能エネルギー源を統合するには,グリッドスケールでのエネルギー貯蔵が不可欠です.
- 非水性酸化還元流電池は,このアプリケーションのための有望な技術です.
- 低コストで高性能の電気活性材料は,システムの生存に不可欠です.
研究 の 目的:
- 非水性酸化還元流電池のための新しい溶解性アノライト材料の設計と特定.
- リチウムイオンサポートの電解質で低電位で可逆的な酸化還元プロセスを達成する.
- エネルギー貯蔵ソリューションの安定性と効率性を向上させる
主な方法:
- ピリジンベースのアノライト材料の進化的設計
- アノライト候補をスクリーニングするサイクル電圧測定.
- 安定性を評価するために,充電状態の材料の独立した合成と特徴付け.
主要な成果:
- ピリジン基のアノライトが2つの可逆性酸化還元カップルで特定された.
- 原材料の分解経路を明らかにし 合成改良を導きました
- 発見されたN-メチル4-アセチルピリジニウムテトラフローロボラート,低等価重量 (111 g/mol·e-)) の有望なアノライト.
結論:
- N-メチル4-アセチルピリジニウムテトラフローロボラートは,安定した,可逆の2電子減少をLiBF4電解質で示しています.
- この材料は水性でない溶剤に溶け,単一のステップで合成されます.
- 開発された材料は,効率的で費用対効果の高いグリッド規模のエネルギー貯蔵の可能性を示しています.
さらに関連する動画
10:03Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
26.2K
11:04Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
13.6K
関連する概念動画
Electrolysis
31.6K
In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
31.6K
Batteries and Fuel Cells
32.0K
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
32.0K
Voltaic/Galvanic Cells
68.4K
Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
68.4K
Electrochemical Cells
157
Electrochemical cells are systems that convert chemical energy into electrical energy or use electrical energy to drive chemical reactions. They consist of two electrodes in contact with an electrolyte, where redox reactions enable electron transfer. Most electrochemical cells include two half-cells connected by an external wire for electron flow and a salt bridge for ion flow. The salt bridge contains an electrolyte solution and maintains charge neutrality by allowing ions—not...
157
Balancing Redox Equations
64.7K
Electrochemistry is the science involved in the interconversion of electrical and chemical reactions. Such reactions are called reduction-oxidation, or redox reactions. These important reactions are defined by changes in oxidation states for one or more reactant elements and include a subset of reactions involving the transfer of electrons between reactant species. Electrochemistry as a field has evolved to yield sufficient insights on the fundamental principles of redox chemistry and multiple...
64.7K
Electrochemical Systems
105
Electrochemical systems provide a fascinating insight into the dynamic interplay of charged species within various phases. One notable example is the interaction between a membrane permeable to K⁺ ions but not to Cl⁻ ions, separating an aqueous KCl solution from pure water. As K⁺ ions diffuse through the membrane, they generate net charges on each phase, leading to a potential difference between them.Similarly, when a piece of Zn is immersed in an aqueous ZnSO₄ solution,...
105
