Electrolytic Properties and Application to Lithium Battery of Solutions with Sydnone Compounds

苯乙烯酮化合物溶液的电解性能及其在锂电池中的应用

• 批准号: 10650818
• 负责人: SASAKI Yukio
• 金额: $ 1.86万
• 依托单位: TOKYO INSTITUTE OF POLYTECHNICS
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650818/
• 关键词: Lithium Batteries; Organic Electrolyte; Scanning Electron Microscope; Sydnone Compounds; Conductivity; X-ray Photoelectron Spectroscope; Cycling Efficiency; リチウム一次、二次電池; エネルギー密度; リチウム一次,二次電池; リチウムサイクル効率; 混合溶媒; リチウム1次,二次電池; 誘電率; 粘性率

The electrolytic conductivity and charge-discharge characteristics of the lithium electrode were examined in the ternary solvent systems made up of ethylene carbonate (EC)-dimethylcarbonate (DMC) equimolar binary mixture with 3-mehylsydnone (3-MSD) and 3-ethylsydnone (3-ESD). The electrolytes used are LiClO_4, LiPF_6, LiBF_4, LiCF_3SO_3, LiN(CF_3SO_2)_2, and LiN(C_2F_5SO_2)_2. The order of the decrease in conductivities of ternary solvent electrolytes at mol ratio 0.5 of 3-MSD and 3-ESD is LiPF_6>LiClO_4>LiN(CF_3SO_2)_2 and LiN(C_2F_5SO_2)_2>LiBF_4>LiCF_3SO_3. The 1 mol dm^<-3> LiN(CF_3SO_2)_2 and LiN(C_2F_5SO_2)_2 electrolytes with large anions show the moderate conductivities of more than 6-7 mS cm^<-1> at mol ratio 0.5 of 3-MSD and 3-ESD.An addition of 3-MSD and 3-ESD to the EC-DMC equimolar binary mixture containing LiClO_4, LiBF_4, LiCF_3SO_3, and LiN(CF_3SO_2) is effective for the rise in lithium electrode cycling efficiency. It is found by using scanning electron microscope (SEM) that the cycling efficiency is dependent on the morphology and thickness of the film formed on the Ni (working) electrode. In addition, the film was found to be containing a certain nitrogen compound by using X-ray photoelectron spectroscope (XPS).

研究了碳酸亚乙酯(EC)-碳酸二甲酯(DMC)等摩尔二元体系与3-甲基苯乙酮(3-MSD)和3-乙基苯乙酮(3-ESD)组成的三元体系中锂电极的电导率和充放电性能。所用电解液为LiClO_4、LiPF_6、LiF_4、LiCF_3SO_3、LiN(CF_3SO_2)_2和LiN(C_2F_5SO_2)_2。当3-MSD和3-ESD的摩尔比为0.5时，三元溶剂电解液的电导率下降顺序为LiPF_6&gt；LiClO_4&gt；LiClO_4&gt；在含有LiClO_4、LiBF_4、LiF_3SO_3和LIN(CF_3SO_2)的EC-DMC等摩尔混合物中加入3-MSD和3-ESD，可使锂电极的电导率达到6~7ms cm~(-1)~(-1)。扫描电子显微镜(SEM)分析发现，循环效率与工作电极上形成的膜层的形态和厚度有关。此外，通过X射线光电子能谱(XPS)分析发现，薄膜中含有一定的氮化物。

项目成果

Minoru Handa: "Physical Properties of 3-Ethylsydnone and the Alkyl Substituents"Chemistry Letters. 5. 457-458 (1998)

Minoru Handa：“3-乙基悉尼酮和烷基取代基的物理性质”化学快报。

Y.Sasaki, K.Sekine, And M.Handa: "Electrolytic Behavior and Application to Lithium Batteries of 3-Alkylsydnone-Dimethylcarbonate Electrolytes"Prog.Batteries and Battery Materials. 17. 239-241 (1998)

Y.Sasaki、K.Sekine 和 M.Handa：“3-烷基苯乙烯酮-碳酸二甲酯电解质的电解行为及其在锂电池中的应用”Prog.电池和电池材料。

Minoru Handa: "Physical Properties of 3-Ethylsydnone and the Alkyl Substituents"Chemistry Letters. 457-458 (1998)

Minoru Handa：“3-乙基悉尼酮和烷基取代基的物理性质”化学快报。

Satoshi Iinou: "Electrolytic Properties and Application to Lithium Batteries of 3-Propyl-4-methylsydnone-based Binary Solvent Electrolytes"Electrochemistry. 67・1. 22-26 (1999)

Satoshi Iinou：“基于 3-丙基-4-甲基苯乙烯酮的二元溶剂电解质的电解质特性及其在锂电池中的应用”电化学 67・1（1999）。

Satoshi Iinou: "Electrolytic Properties and Application to Lithium Batteries of 3-Propyl-4-methylsydnone-based Binary Solvent Electrolytes"Electrochemistry. 67. 22-26 (1999)

Satoshi Iinou：“基于 3-Propyl-4-methylsydnone 的二元溶剂电解质的电解质特性及其在锂电池中的应用”电化学。