负极、电池以及制造它们的方法

• Format: Patent
• Language: Chinese
• Published: 03.05.2017
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

本发明涉及负极、电池以及制造它们的方法。本发明的负极包括：设置在负极集电体上的负极活性物质层上的覆盖层；其中，活性物质层含有能够使电极反应物嵌入并脱嵌且具有金属元素及准金属元素中的至少种的负极材料，覆盖层包括含有硫及氧的金属盐；其中，通过利用飞行时间二次离子质谱的表面分析，得到选自由作为正二次离子的LiSO、LiSO、LiSO、及LiSO和作为负二次离子的LiSO、LiSO、SO、及SO组成的组的离子的至少个峰。该电池包括正极、负极及电解液。本发明的负极、电池以及制造它们的方法可以有效地改善循环特性。 A battery capable of improving the cycle characteristics is provided. The battery includes a cathode, an anode and an electrolytic solution. The anode has a coat on an anode active material layer provided on an anode current collector. The anode active material layer contains an anode material that is capable of inserting and extracting an electrode reactant and has at least one of a metal element and a metalloid element. The coat contains a metal salt having sulfur and oxygen.