摘要:
A nonaqueous electrolytic cell manufacturing method is characterized in that a nonaqueous electrolyte containing vinylene carbonate is used, a coating on the surface of the negative electrode is formed at the initial charging/discharging in such a way by lowering the negative electrode potential to less than 0.4 V with relative to the lithium potential, wherein the nonaqueous electrolytic cell comprises a nonaqueous electrolyte containing an electrolytic salt and a nonaqueous solvent, a positive electrode, and a negative electrode containing a negative electrode material into/from which lithium ions are inserted/desorbed at a potential higher than the lithium potential by 1.2 V. The nonaqueous electrolytic cell is used in a range of negative electrode potential nobler than the lithium potential by 0.8 V.
摘要:
The invention aims to suppress gas generation in a nonaqueous electrolytic cell having a negative electrode containing negative active material such as lithium titanate and particularly suppress swelling in a nonaqueous electrolytic cell by suppressing gas generation at the time of storage at a high temperature. The nonaqueous electrolytic cell comprises a nonaqueous electrolyte containing an electrolytic salt and a nonaqueous solvent, a positive electrode, and a negative electrode containing a negative electrode material into/from which lithium ions are inserted/extracted at a potential higher than the lithium potential by 1.2 V. The nonaqueous electrolytic cell is characterized in that the nonaqueous electrolyte contains vinylene carbonate, the negative electrode has a coat thereon, and the nonaqueous electrolytic cell is used in a range of negative electrode potential nobler than the lithium potential by 0.8 V. A nonaqueous electrolytic cell manufacturing method is characterized in that a nonaqueous electrolyte containing vinylene carbonate is used, the initial charge-discharge is carried out under a condition that the negative potential in the completed charged state exceeds the lithium potential by 0.8 V, a coat is formed on the surface of the negative electrode or a coat is formed on the surface of the negative electrode at the initial charge-discharge in such a way at least once, the negative potential is lowered below the lithium potential by 0.4 V.
摘要:
An additive typified by tris(trimethylsilyl)phosphate, tris(trimethylsilyl)borate, and tetrakis(trimethylsiloxy)titanium (Chem. 3) are applied to a nonaqueous electrolyte containing a chain carbonate and/or a chain carboxylate as a main solvent (contained at a ratio of 70 volume % or higher). It is preferable that 0≦a
摘要翻译:将以三(三甲基甲硅烷基)磷酸酯,三(三甲基甲硅烷基)硼酸盐和四(三甲基甲硅烷氧基)钛(化学式3)为代表的添加剂施加到含有链碳酸酯和/或链羧酸酯作为主要溶剂的非水电解质 比例为70体积%以上)。 优选0&lt; nlE; a <30,其中“a”表示在没有碳碳的碳酸酯中,在整个体积中没有碳 - 碳双键的碳酸酯中的环状碳酸酯的体积定义为100 非水电解液中含有的非水溶剂中的双键和链羧酸盐(0
摘要:
An additive typified by tris(trimethylsilyl)phosphate, tris(trimethylsilyl)borate, and tetrakis(trimethylsiloxy)titanium (Chem. 3) are applied to a nonaqueous electrolyte containing a chain carbonate and/or a chain carboxylate as a main solvent (contained at a ratio of 70 volume % or higher). It is preferable that 0≦a
摘要:
Gas generation of a non-aqueous electrolyte battery having a negative active material that intercalates/deintercalates lithium ions at a potential not lower than 1.2 V relative to the potential of lithium as negative electrode is suppressed.A non-aqueous electrolyte battery comprising a non-aqueous electrolyte containing an electrolyte salt and a non-aqueous solvent, a positive electrode and a negative electrode is characterized in that the main active material of said negative electrode is an active material that intercalates/deintercalates lithium ions at a potential not lower than 1.2 V relative to the potential of lithium and the auxiliary active material of said negative electrode is an active material that at least intercalates lithium ions at a potential lower than 1.2 V relative to the potential of lithium and that there exists lithium showing a spin-lattice relaxation time (T1) of not less than 1 second as determined by a solid-state Li—NMR measurement in the main active material of said negative electrode. A method of manufacturing a non-aqueous electrolyte battery containing a non-aqueous electrolyte, a positive electrode and a negative electrode (a main active material and an auxiliary active material of the negative electrode) is characterized in that the negative electrode potential is lowered to not higher than 0.8 V relative to the potential of lithium at least once in the initial cycle.
摘要:
A non-aqueous electrolyte battery includes a non-aqueous electrolyte containing an electrolytic salt and a non-aqueous solvent, a positive electrode, and a negative electrode having a negative active material that intercalates/deintercalates lithium ions at a potential not lower than 1.2 V relative to the potential of lithium, wherein a film coat having a carbonate structure and a thickness of not less than 10 nm exists on the surface of the negative electrode. A non-aqueous electrolyte battery is operated in a region of potential of the negative electrode higher than 0.8 V relative to the potential of lithium.
摘要:
Gas generation of a non-aqueous electrolyte battery having a negative active material that intercalates/deintercalates lithium ions at a potential not lower than 1.2 V relative to the potential of lithium as negative electrode is suppressed.A non-aqueous electrolyte battery comprising a non-aqueous electrolyte containing an electrolyte salt and a non-aqueous solvent, a positive electrode and a negative electrode is characterized in that the main active material of said negative electrode is an active material that intercalates/deintercalates lithium ions at a potential not lower than 1.2 V relative to the potential of lithium and the auxiliary active material of said negative electrode is an active material that at least intercalates lithium ions at a potential lower than 1.2 V relative to the potential of lithium and that there exists lithium showing a spin-lattice relaxation time (T1) of not less than 1 second as determined by a solid-state Li—NMR measurement in the main active material of said negative electrode. A method of manufacturing a non-aqueous electrolyte battery containing a non-aqueous electrolyte, a positive electrode and a negative electrode (a main active material and an auxiliary active material of the negative electrode) is characterized in that the negative electrode potential is lowered to not higher than 0.8 V relative to the potential of lithium at least once in the initial cycle.
摘要:
A non-aqueous electrolyte battery suppresses gas generation in a non-aqueous electrolyte battery having a negative active material that intercalates and deintercalates lithium ions at a potential not lower than 1.2 V relative to the potential of lithium for the negative electrode thereof. The non-aqueous electrolyte battery comprises a non-aqueous electrolyte containing an electrolytic salt and a non-aqueous solvent, a positive electrode and a negative electrode having a negative active material that intercalates/deintercalates lithium ions at a potential not lower than 1.2 V relative to the potential of lithium and is characterized in that a film coat having a carbonate structure and a thickness of not less than 10 nm exists on the surface of said negative electrode and that the non-aqueous electrolyte battery is operated in a region of potential of the negative electrode higher than 0.8 V relative to the potential of lithium. A method of manufacturing a non-aqueous electrolyte battery having a non-aqueous electrolyte, a positive electrode and a negative electrode having a negative active material that intercalates/deintercalates lithium ions at a potential not lower than 1.2 V relative to the potential of lithium is characterized in that a film coat having a carbonate structure is brought into existence on the surface of said negative electrode by lowering the potential of the negative electrode to lower than 0.8 V relative to the potential of lithium at least once in an initial cycle.
摘要:
A positive active material is provided which can give a battery having a high energy density and excellent high-rate discharge performance and inhibited from decreasing in battery performance even in the case of high-temperature charge. Also provided is a non-aqueous electrolyte battery employing the positive active material. The positive active material contains a composite oxide which is constituted of at least lithium (Li), manganese (Mn), nickel (Ni), cobalt (Co), and oxygen (O) and is represented by the following chemical composition formula: LiaMnbNicCodOe (wherein 0
摘要:
A positive active material is provided which can give a battery having a high energy density and excellent high-rate discharge performance and inhibited from decreasing in battery, performance even in the case of high-temperature charge. Also provided is a non-aqueous electrolyte battery employing the positive active material. The positive active material contains a composite oxide which is constituted of at least lithium (Li), manganese (Mn), nickel (Ni), cobalt (Co), and oxygen (O) and is represented by the following chemical composition formula: LiaMnbNicCodOe (wherein 0