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    • 26. 发明授权
    • Active material having extended cycle life
    • 活性物质具有延长的循环寿命
    • US06468695B1
    • 2002-10-22
    • US09376914
    • 1999-08-18
    • Jeremy Barker
    • Jeremy Barker
    • H01M450
    • H01M4/505C01G45/1242C01P2002/32C01P2002/77C01P2006/12C01P2006/40H01M4/1391H01M10/0525
    • In one embodiment, the invention provides a novel composition which is stabilized against decomposition when used as an active material for an electrochemical cell. The active material of the present invention comprises particles of spinel lithium manganese oxide (LMO) enriched with lithium by a decomposition product of lithium hydroxide forming a part of each of the LMO particles. The spinel LMO product formed by the decomposition of lithium hydroxide in the presence of the LMO is characterized by a reduced surface area and increased capacity retention (reduced capacity fading) as compared to the initial, non-treated, non-enriched spinel. In another aspect, the treated spinel LMO product is combined with lithium carbonate in a cathode mixture.
    • 在一个实施方案中,本发明提供了当用作电化学电池的活性材料时稳定的抗分解的新型组合物。 本发明的活性物质包含由氢氧化锂的分解产物富含锂的尖晶石锂锰氧化物(LMO),形成每种LMO颗粒的一部分。 在LMO存在下通过氢氧化锂分解形成的尖晶石LMO产物的特征在于与初始的未处理的非富集尖晶石相比,表面积减小并且容量保持率(降低的容量衰减)降低。 另一方面,将经处理的尖晶石LMO产物与阴极混合物中的碳酸锂混合。
    • 28. 发明授权
    • Thermally stable, highly conductive salt
    • 热稳定,高导电性盐
    • US6015639A
    • 2000-01-18
    • US16608
    • 1998-01-30
    • Feng GaoJeremy BarkerPeikang Liu
    • Feng GaoJeremy BarkerPeikang Liu
    • H01B1/12H01M10/0525H01M10/0568H01M6/18
    • H01M10/0568H01B1/122H01M10/0525
    • The invention provides a new family of compounds and a method of making the compounds. The new compounds are useful as ion conductive salts, and particularly useful as salts for batteries. The compounds of the invention are prepared from three principal reagents, bis (trifluoromethanesufonyl) methane (CF.sub.3 SO.sub.2).sub.2 CH.sub.2 ; benzoyl chloride; and pyridine which facilitates reaction and then is removed. A precursor sodium salt (CF.sub.3 SO.sub.2).sub.2 CHNa is first prepared. Then, equimolar amounts of the precursor sodium salt and pyridine are dissolved in anhydrous acetonitrile. A stoichiometric amount of the selected substitute benzoyl chloride is then added drop by drop. After addition of Li.sub.3 PO.sub.4, there is pyridine release and formation of the product of the aforesaid two reagents. In the benzene ring, R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5 are each identical or different and are each independently selected from hydrogen and an electron withdrawing substituent.
    • 本发明提供一种新的化合物族和一种制备该化合物的方法。 新化合物可用作离子导电盐,并且特别用作电池的盐。 本发明的化合物由三种主要试剂,二(三氟甲磺酰基)甲烷(CF 3 SO 2)2 CH 2; 苯甲酰氯; 和吡啶,这有助于反应然后被除去。 首先制备前体钠盐(CF 3 SO 2)2 CHNa。 然后将等摩尔量的前体钠盐和吡啶溶于无水乙腈中。 然后逐滴加入化学计量的所选择的替代苯甲酰氯。 添加Li3PO4后,存在吡啶释放并形成上述两种试剂的产物。 在苯环中,R 1,R 2,R 3,R 4和R 5各自相同或不同,各自独立地选自氢和吸电子取代基。