Department of Materials Science & Engineering, Drexel University , Philadelphia, Pennsylvania 19104, United States.
J Am Chem Soc. 2013 Oct 30;135(43):15966-9. doi: 10.1021/ja405735d. Epub 2013 Oct 21.
New two-dimensional niobium and vanadium carbides have been synthesized by selective etching, at room temperature, of Al from Nb2AlC and V2AlC, respectively. These new matrials are promising electrode materials for Li-ion batteries, demonstrating good capability to handle high charge-discharge rates. Reversible capacities of 170 and 260 mA·h·g(-1) at 1 C, and 110 and 125 mA·h·g(-1) at 10 C were obtained for Nb2C and V2C-based electrodes, respectively.
通过在室温下选择性地从 Nb2AlC 和 V2AlC 中去除 Al，分别合成了新的二维铌和钒碳化物。这些新材料是锂离子电池有前途的电极材料，具有处理高充放电速率的良好能力。基于 Nb2C 和 V2C 的电极分别在 1 C 时获得了 170 和 260 mA·h·g(-1)的可逆容量，在 10 C 时获得了 110 和 125 mA·h·g(-1)的可逆容量。
