Electrochemical properties of graphite negative electrodes in organic electrolyte solutions containing multivalent cation

石墨负极在含多价阳离子有机电解质溶液中的电化学性能

• 批准号: 24750182
• 负责人: FUKUTSUKA Tomokazu
• 金额: $ 2.83万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24750182/
• 关键词: リチウムイオン電池; 電解液; 溶媒和構造

In this study, the relationships between the structure of solvated-lithium ion and the intercalation of lithium ion into graphite in propylene carbonate (PC) solution was investigated. In order to control the structure of solvated-lithium ion, stronger Lewis acid than lithium ion was added. Multivalent cations such as calcium ion and magnesium ion were used. Addition of a certain amount of calcium ion enabled lithium ion to intercalate into graphite at the ratio of Ca/Li = 1.1. Instead of PC, dimethyl sulfoxide (DMSO) was used for the Raman analysis of the structure of solvated cation. In the DMSO-based solution, it was found that the addition of calcium decreased the free-DMSO and suggested the decrease of solvation number of lithium ion. Finally, dimethyl carbonated was added as the diluent of viscosity. The results indicated that the control of the structure of solvated-lithium ion is quite important for the further development of lithium ion batteries.

本研究研究了碳酸丙烯酯（PC）溶液中溶剂化锂离子的结构与锂离子嵌入石墨之间的关系。为了控制溶剂化锂离子的结构，添加了比锂离子更强的路易斯酸。使用多价阳离子，例如钙离子和镁离子。添加一定量的钙离子使锂离子以Ca/Li=1.1的比例嵌入石墨中。使用二甲基亚砜 (DMSO) 代替 PC 进行溶剂化阳离子结构的拉曼分析。在基于 DMSO 的溶液中，发现钙的添加减少了游离 DMSO，表明锂离子的溶剂化数减少。最后加入碳酸二甲酯作为粘度稀释剂。结果表明，溶剂化锂离子结构的控制对于锂离子电池的进一步发展具有重要意义。

项目成果

Electrochemical Intercalation/De-Intercalation of Lithium Ions at Graphite Negative Electrode in TMP-Based Electrolyte Solution

• DOI: 10.1149/2.002301jes
• 发表时间: 2012
• 期刊: Journal of The Electrochemical Society
• 影响因子: 3.9
• 作者: S. Takeuchi;S. Yano;T. Fukutsuka;K. Miyazaki;T. Abe

マグネシウム塩含有イオン液体の電気化学的挙動

含镁盐离子液体的电化学行为

• 发表时间: 2014
• 作者: 永田真悟;宮崎晃平;福塚友和;安部武志
• 通讯作者: 安部武志

Electrochemical Intercalation of Lithium-Ion in Propylene Carbonate Based Electrolytes ― Effect of Addition of Bivalent-Ions ―

碳酸丙烯酯基电解质中锂离子的电化学嵌入 ― 添加二价离子的影响 ―

• 发表时间: 2012
• 作者: S. Takeuchi;F. Sagane;K. Miyazaki;T. Fukutsuka;and T. Abe
• 通讯作者: and T. Abe

Electrochemical Intercalation of Lithium-Ion in Propylene Carbonate Based Electrolytes―Effect of Addition of Bivalent-Ions―

碳酸丙烯酯基电解质中锂离子的电化学嵌入——添加二价离子的效果——

• 发表时间: 2012
• 作者: S. Takeuchi;F. Sagane;K. Miyazaki;T. Fukutsuka;and T. Abe
• 通讯作者: and T. Abe

Lithium-Ion Intercalation into Graphite Electrode in Bivalent Ions-Containing Propylene Carbonate

含二价离子碳酸丙烯酯中锂离子嵌入石墨电极

• 发表时间: 2012
• 作者: S. Takeuchi;F. Sagane;K. Miyazaki;T. Fukutsuka;and T. Abe
• 通讯作者: and T. Abe