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    • 9. 发明申请
    • Non-aqueous electrolyte secondary battery and process for the preparation thereof
    • 非水电解质二次电池及其制备方法
    • US20020018935A1
    • 2002-02-14
    • US09899208
    • 2001-07-06
    • JAPAN STORAGE BATTERY CO., LTD.
    • Mikio Okada
    • H01M004/40H01M004/04H01M004/52H01M004/50
    • H01M4/131H01M4/0445H01M4/362H01M4/381H01M4/505H01M4/525H01M6/181H01M10/052H01M10/446H01M2010/4292Y10T29/49108Y10T29/49115
    • In accordance with the non-aqueous electrolyte secondary battery of the invention and the process for the preparation thereof, charging is carried out with a combination of a positive electrode provided with excess lithium and a negative electrode in order to cause lithium to be deposited on the negative electrode. Accordingly, no oxidized surface film is interposed between lithium and the current collector of negative electrode or the negative active material layer as in the case where a metallic lithium foil is laminated on the negative electrode. In this arrangement, a battery having a small internal resistance can be provided. Since the deposition of lithium is conducted in the assembled battery, lithium does not come in contact with air, preventing the formation of a thick ununiform oxidized film on the surface thereof. Thus, the deposition of dendrite can be inhibited, making it possible to inhibit the drop of battery capacity and hence provide a battery having an excellent cycle life performance. Further, lithium can be retained on the negative electrode in an amount excess to the capacity of the positive electrode. Accordingly, even when lithium is lost due to the deposition of dendrite or the reaction with the electrolyte solution, the drop of battery capacity can be inhibited because the negative electrode is provided with excess lithium.
    • 根据本发明的非水电解质二次电池及其制备方法,通过组合具有过量的锂和负极的正极来进行充电,以使锂沉积在 负极。 因此,在金属锂箔层叠在负极上的情况下,在锂和负极的集电体或负极活性物质层之间没有氧化的表面膜。 在这种布置中,可以提供具有小内阻的电池。 由于在组电池中进行锂的沉积,所以锂不与空气接触,防止在其表面形成厚的不均匀的氧化膜。 因此,可以抑制枝晶的沉积,使得可以抑制电池容量的下降,从而提供具有优异的循环寿命性能的电池。 此外,锂可以以超过正极的容量的量保持在负极上。 因此,即使锂由于枝晶的沉积或与电解质溶液的反应而损失,由于负极具有过量的锂,所以可以抑制电池容量的下降。
    • 10. 发明申请
    • Method for forming a thin film
    • 薄膜形成方法
    • US20010054226A1
    • 2001-12-27
    • US09810782
    • 2001-03-16
    • Masahiro YoshimuraTakeshi FujiwaraSeung-wan SongTomoaki WatanabeRyo TeranishiKyoo-Seung Han
    • H01M004/04B05D005/12C25D009/00C25D011/00
    • C25D9/04C01G51/00C01G51/42C01P2002/72C01P2006/40H01M6/40Y10T29/49115
    • A first reactive solution is made of a water solution composed of LiOH.7H2O melted in distilled water, and a second reactive solution is made of a water solution composed of CoSO4.7H2O melted in distilled water. Then, the first and the second reactive solutions are put in a flow-type reactor with a pair of electrodes and a porous base material provided in between the pair of electrodes therein. The first reactive solution is flown in between one electrode and the porous base material at its given flow rate, and the second reactive solution is flown in between the other electrode and the porous base material at its given flow rate. Then, a given voltage is applied between the pair of electrodes to synthesize a compound thin film including the components of the first and the second reactive solutions directly on the porous base material.
    • 第一反应溶液由在蒸馏水中熔融的LiOH·7H 2 O组成的水溶液制成,第二反应溶液由在蒸馏水中熔化的CoSO 4·7H 2 O组成的水溶液制成。 然后,将第一和第二反应溶液放入具有一对电极的流动型反应器和设置在其中的一对电极之间的多孔基材。 第一反应溶液以其给定的流速在一个电极和多孔基材之间流动,并且第二反应溶液以给定的流速在另一电极和多孔基材之间流动。 然后,在一对电极之间施加给定的电压,以将包含第一和第二反应溶液的组分的复合薄膜直接合成到多孔基材上。