首页> 外国专利> CARBON-COVERED GRAPHITE ANODE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY, ITS MANUFACTURING METHOD, AND ANODE FOR LITHIUM-ION SECONDARY BATTERY AND LITHIUM-ION SECONDARY BATTERY USING THE ANODE

CARBON-COVERED GRAPHITE ANODE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY, ITS MANUFACTURING METHOD, AND ANODE FOR LITHIUM-ION SECONDARY BATTERY AND LITHIUM-ION SECONDARY BATTERY USING THE ANODE

机译：锂离子二次电池用碳包覆石墨阳极材料，其制造方法以及使用该阳极的锂离子二次电池和锂离子二次电池的阳极

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摘要

PPROBLEM TO BE SOLVED: To provide a carbon-covered graphite anode material for a lithium-ion secondary battery in which feature of non-orientation graphite particles is maintained and of which charging load characteristics and low temperature charging performance are improved and its manufacturing method, and provide an anode for the lithium-ion secondary battery and the lithium-ion secondary battery using the anode material. PSOLUTION: The carbon-covered graphite anode material for the lithium-ion secondary battery includes the graphite particles to become a core, and a carbon layer covering the graphite particles. The graphite particles to become the core have structures that a plurality of flat-shaped graphite particles are mutually aggregated or coupled in non-parallel, an R value (ID/IG) as an intensity ratio of a peak intensity (ID) in the range of 1,300 to 1,400 cmSP-1/SPmeasured by Raman spectroscopy to a peak intensity (IG) in the range of 1,560 to 1,650 cmSP-1/SPof 0.3 or less, and a concentration of a nitrogen element on the surface of the carbon-covered graphite anode material measured by X-ray photoelectron spectroscopy (XPS) of 1.5 to 10 at%. PCOPYRIGHT: (C)2009,JPO&INPIT

机译：

要解决的问题：提供一种用于锂离子二次电池的碳覆盖的石墨负极材料，该材料保留了非取向石墨颗粒的特征，并且其充电负荷特性和低温充电性能得到改善，并且其制造方法，并提供用于锂离子二次电池的负极和使用该负极材料的锂离子二次电池。

解决方案：用于锂离子二次电池的碳覆盖石墨负极材料包括成为芯的石墨颗粒和覆盖该石墨颗粒的碳层。成为核的石墨粒子具有多个扁平形状的石墨粒子彼此不平行地聚集或偶联的结构，作为峰强度（ID）的强度比的R值（ID / IG）在该范围内。拉曼光谱法测得的1,300至1,400 cm -1 的峰值强度（IG）在1,560至1,650 cm -1 的范围内为0.3或更小通过X射线光电子能谱（XPS）测得的碳覆盖的石墨负极材料的表面上的氮元素的含量为1.5〜10at％。

版权：（C）2009，日本特许厅＆INPIT 展开▼

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公开/公告号JP2009117334A

专利类型
公开/公告日2009-05-28

原文格式PDF
申请/专利权人 HITACHI CHEM CO LTD;
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申请/专利号JP20080098291
发明设计人 KATAYAMA KOICHI;SUZUKI KIYOSHI;
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申请日2008-04-04
分类号H01M4/58;H01M4/36;
国家 JP
入库时间 2022-08-21 19:42:24

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