Reaction chemistry in rechargeable Li-O2 batteries
- Reaction chemistry in rechargeable Li-O2 batteries
- 임희대; 이병주; 배영준; 박혁준; 고영민; 김해겸; 김진수; 강기석
- Issue Date
- Chemical society reviews
- VOL 46, NO 10-2888
- The seemingly simple reaction of Li– O2 batteries involving lithium and oxygen makes this chemistry attractive for high-energy-density storage systems; however, achieving this reaction in practical rechargeable Li– O2 batteries has proven difficult. The reaction paths leading to the final Li2O2 discharge products can be greatly affected by the operating conditions or environment, which often results in major side reactions. Recent research findings have begun to reveal how the reaction paths may be affected by the surrounding conditions and to uncover the factors contributing to the difficulty in achieving the reactions of lithium and oxygen. This progress report describes the current state of understanding of the electrode reaction mechanisms in Li– O2 batteries; the factors that affect reaction pathways; and the effect of cell components such as solvents, salts, additives, and catalysts on the discharge product and its decomposition during charging. This comprehensive review of the recent progress in understanding the reaction chemistry of the Li– O2 system will serve as guidelines for future research and aid in the development of reliable high-energy-density rechargeable Li– O2 batteries.
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