Energy Materials, Materials Science and Manufacturing, Council for Scientific & Industrial Research, Pretoria 0001, South Africa.
ACS Appl Mater Interfaces. 2013 Aug 14;5(15):7592-8. doi: 10.1021/am401894t. Epub 2013 Jul 29.
The LiMn1.5Ni0.5O4 spinel is an important lithium ion battery cathode material that has continued to receive major research attention because of its high operating voltage (∼4.8 V). This study interrogates the impact of microwave irradiation on the Mn(3+) concentration and electrochemistry of the LiMn1.5Ni0.5O4 spinel. It is shown that microwave is capable of tuning the Mn(3+) content of the spinel for enhanced electrochemical performance (high capacity, high capacity retention, excellent rate capability, and fast Li(+) insertion/extraction kinetics). This finding promises to revolutionize the application of microwave irradiation for improved performance of the LiMn1.5Ni0.5O4 spinel, especially in high rate applications.
尖晶石 LiMn1.5Ni0.5O4 是一种重要的锂离子电池阴极材料，由于其工作电压高（约 4.8V），因此一直受到广泛关注。本研究探讨了微波辐射对 LiMn1.5Ni0.5O4 尖晶石的 Mn(3+)浓度和电化学性能的影响。结果表明，微波能够调节尖晶石中的 Mn(3+)含量，从而提高电化学性能（高容量、高容量保持率、优异的倍率性能和快速的 Li(+)插入/提取动力学）。这一发现有望彻底改变微波辐射在提高 LiMn1.5Ni0.5O4 尖晶石性能方面的应用，特别是在高倍率应用中。
