Cell properties for modified PTMA cathodes of organic radical batteries
Cell properties for modified PTMA cathodes of organic radical batteries
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DOI：
10.1016/j.jpowsour.2006.11.044
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发表时间：
2007-02-25
影响因子：
9.2
通讯作者：
Cairns, Elton J.
中科院分区：
文献类型：
--
作者：
Nakahara, Kentaro;Iriyama, Jiro;Cairns, Elton J.
已知稳定的硝酰基自由基聚合物，例如聚（甲基丙烯酸2，2，6，6-四甲基-1-哌啶基氧基-4-基酯）（PTMA），作为锂可再充电电池的阴极活性材料是有效的。使用水基浆料制备PTMA复合电极，使得能够成功地生产均匀的电极。这提高了活性材料的利用率，并使我们能够获得几乎等于理论值（111 mAh g（-1））的比容量。利用这些电极和石墨作为阳极活性材料制备了锂半电池，并详细测量了它们的循环稳定性、温度依赖性、倍率性能和自放电速率。虽然它们在第一次循环时显示出24%的不可逆容量，但在第二次循环后容量稳定。(c)2006 Elsevier B. V.保留所有权利。
Stable nitroxyl radical polymers, such as poly (2,2,6,6-tetramethyl-1-piperidinyloxy-4-yl methacrylate) (PTMA), are known to be effective as cathode active materials for lithium rechargeable batteries. A water-based slurry was used to prepare PTMA composite electrodes, enabling successful production of homogeneous electrodes. This improved utilization of active material and enabled us to obtain specific capacities almost equal to the theoretical value (111 mAh g(-1)). Lithium half cells were fabricated using these electrodes and using graphite as the anode active material, and their cycling stability, temperature dependence, rate capability and self-discharge rate were measured in detail. Although they showed 24% irreversible capacity on the first cycle, the capacity stabilized after the second cycle. (c) 2006 Elsevier B.V. All rights reserved.