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Electrochemical Performance and Mechanism of Calcium Metal‐Organic Battery
Batteries & Supercaps ( IF 5.1 ) Pub Date : 2020-09-14 , DOI: 10.1002/batt.202000197 Robert Dominko 1 , Jan Bitenc 2 , Antonio Scafuri 2 , Klemen Pirnat 3 , Matic Lozinšek 4 , Ivan Jerman 5 , Jože Grdadolnik 6 , Bernard Fraisse 7 , Romain Berthelot 7 , Lorenzo Stievano 7
Batteries & Supercaps ( IF 5.1 ) Pub Date : 2020-09-14 , DOI: 10.1002/batt.202000197 Robert Dominko 1 , Jan Bitenc 2 , Antonio Scafuri 2 , Klemen Pirnat 3 , Matic Lozinšek 4 , Ivan Jerman 5 , Jože Grdadolnik 6 , Bernard Fraisse 7 , Romain Berthelot 7 , Lorenzo Stievano 7
Affiliation
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The abundance of Ca, its low redox potential and high specific capacity make Ca metal batteries an attractive energy storage system for the future. A recent demonstration of room temperature calcium plating/stripping opened a new avenue of the development, but the performance of cathode materials is lagging far behind. Due to the nature of divalent cations, conversion and coordination electrochemical reactions show better performance compared to insertion. Herein, we demonstrate the use of the anthraquinone‐based polymer as a cathode material for the Ca metal‐organic battery. Electrochemical mechanism investigation confirms the reversible reduction of the carbonyl bond and coordination with Ca2+ cations in the discharged state, opening a pathway toward high energy density battery. Continued performance of a 2‐electrode cell is strongly hampered by the overpotential increase caused by the Ca stripping process on the Ca metal anode stating the need for further development of Ca electrolytes. Ca metal‐organic battery promises to achieve cells with gravimetric energy density on the practical level compared to the state‐of‐the‐art Li‐ion batteries.
中文翻译：
钙金属有机电池的电化学性能及机理
Ca的丰富性，低氧化还原电位和高比容量使Ca金属电池成为未来有吸引力的储能系统。最近对室温钙电镀/剥离的演示开辟了新的发展途径，但阴极材料的性能却远远落后。由于二价阳离子的性质，与插入相比，转化和配位电化学反应显示出更好的性能。在此，我们演示了蒽醌基聚合物作为Ca金属有机电池的阴极材料的用途。电化学机理研究证实羰基键可逆还原并与Ca 2+配位处于放电状态的阳离子，打开了通往高能量密度电池的途径。由于在Ca金属阳极上进行Ca汽提过程而导致的过电位增加严重阻碍了2电极电池的持续性能，这表明需要进一步开发Ca电解质。与最先进的锂离子电池相比，钙金属有机电池有望在实际水平上实现重量能量密度的电池。
更新日期：2020-09-14
中文翻译：
钙金属有机电池的电化学性能及机理
Ca的丰富性，低氧化还原电位和高比容量使Ca金属电池成为未来有吸引力的储能系统。最近对室温钙电镀/剥离的演示开辟了新的发展途径，但阴极材料的性能却远远落后。由于二价阳离子的性质，与插入相比，转化和配位电化学反应显示出更好的性能。在此，我们演示了蒽醌基聚合物作为Ca金属有机电池的阴极材料的用途。电化学机理研究证实羰基键可逆还原并与Ca 2+配位处于放电状态的阳离子，打开了通往高能量密度电池的途径。由于在Ca金属阳极上进行Ca汽提过程而导致的过电位增加严重阻碍了2电极电池的持续性能，这表明需要进一步开发Ca电解质。与最先进的锂离子电池相比，钙金属有机电池有望在实际水平上实现重量能量密度的电池。
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