PROBLEM TO BE SOLVED: To provide a secondary battery capable of obtaining excellent battery characteristics.SOLUTION: A secondary battery includes a positive electrode, a negative electrode, and an electrolyte; (1) the negative electrode including a plurality of carbon particles and a plurality of non-carbon particles, (2) the carbon particles containing graphite, (3) the non-carbon particles containing a material including at least one of silicon (Si), tin (Sn), and germanium (Ge) as structural elements, and (4) the distribution (horizontal axis: particle diameter D (μm), vertical axis: first order derivative dQ/dD) of the first order derivative of an integrated value (Q) of the relative particle amount with respect to the particle diameter (D) of the plurality of carbon particles having at least one discontinuous point.SELECTED DRAWING: Figure 1
【課題】優れた電池特性を得ることが可能な二次電池を提供する。【解決手段】二次電池は、正極と、(1)複数の炭素粒子および複数の非炭素粒子を含み、(2)炭素粒子は黒鉛を含有し、(3)非炭素粒子はケイ素(Si)、スズ(Sn)およびゲルマニウム(Ge)のうちの少なくとも1種を構成元素として含む材料を含有し、(4)前記複数の炭素粒子の粒子径Dに対する相対粒子量の積算値Qの1階微分値の分布(横軸:粒子径D(μm),縦軸:1階微分値dQ/dD)は、少なくとも1つの不連続点を有する負極と、電解質とを備える。【選択図】図1
ACTIVE MATERIAL FOR SECONDARY BATTERY, ELECTRODE FOR SECONDARY BATTERY, SECONDARY BATTERY, ELECTRIC VEHICLE AND ELECTRONIC APPARATUS
二次電池用活物質、二次電池用電極、二次電池、電動車両および電子機器
2016-06-02
Patent
Elektronische Ressource
Japanisch
IPC: | H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
Europäisches Patentamt | 2019
|Europäisches Patentamt | 2017
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