Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824, USA.
ACS Appl Mater Interfaces. 2012 May;4(5):2318-21. doi: 10.1021/am3002742. Epub 2012 Apr 19.
This work details the synthesis and characterization of a novel lithium titanate aerogel as an anode material for lithium ion batteries. Excessive loss of lithium during supercritical drying can be overcome by increasing the lithium precursor concentration during synthesis. Chronopotentiometry shows the aerogel to have a capacity about 80 % of theoretical at a symmetric C/3 rate, which is comparable to a commercial product. Cyclic voltammetry reveals a batt-cap behavior for the high-surface area aerogel, implying the potential for improved rate capability if electrical conductivity can be maintained.
这项工作详细介绍了一种新型钛酸锂气凝胶的合成和表征，该气凝胶可用作锂离子电池的阳极材料。通过在合成过程中增加锂前体浓度，可以克服超临界干燥过程中锂的大量损失。恒电流计时电位法显示，在对称 C/3 速率下，气凝胶的容量约为理论容量的 80%，与商业产品相当。循环伏安法显示，高比表面积气凝胶具有电池行为，这意味着如果能保持电导率，其倍率性能可能会得到提高。
