Kim Juhyoung, Kang Inhan, Kim Soyeon, Kang Jungwon
Department of Advanced Materials Science and Engineering, Mokpo National University 61 dorim-ri, 1666 Yeongsan-ro, Cheonggye-myeon Muan-gun Jeonnam South Korea
RSC Adv. 2018 Jun 19;8(39):22226-22232. doi: 10.1039/c8ra02920b. eCollection 2018 Jun 13.
High charging overpotential (low energy efficiency) is one of the most important challenges preventing the use of current nonaqueous Li-O batteries. This study demonstrates direct -incorporation of metal oxides on carbon during synthesis and the associated application to nonaqueous Li-O battery catalysts. The partially oxidized MnO (MnO/MnO)-incorporating carbon cathode shows an average overpotential reduction of ∼8% charge/discharge during 40 cycles in a rechargeable nonaqueous Li-O cell. Here, we suggested the possibility that only a small amount of the oxide species (<5%) could show catalytic effects during charge in a rechargeable Li-O cell.
高充电过电位（低能量效率）是阻碍当前非水锂氧电池应用的最重要挑战之一。本研究展示了在合成过程中金属氧化物在碳上的直接掺入及其在非水锂氧电池催化剂中的相关应用。在可充电非水锂氧电池中，掺入部分氧化的MnO（MnO/MnO）的碳阴极在40次循环中显示出充电/放电时平均过电位降低约8%。在此，我们提出了一种可能性，即在可充电锂氧电池充电过程中，只有少量的氧化物物种（<5%）可能表现出催化作用。
