Mechanochemical Preparation and Characterization of All-Solid-State Lithium Secondary Batteries

全固态锂二次电池的机械化学制备及表征

• 批准号: 15360350
• 负责人: TATSUMISAGO Masahiro
• 金额: $ 9.6万
• 依托单位: Osaka Prefecture University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15360350/
• 关键词: mechanical milling; glass; ionics; all-solid-state battery; ion conductor; sulfide; energy; lithium battery

1.Glass ceramic materials with various compositions in the system Li_2S-P_2S_5 were prepared by mechanical milling of starting materials and subsequent heat treatment. The 70Li_2S-30P_2S_5 glass-ceramic obtained by crystallization of mechanically milled glass showed a higher ambient-temperature conductivity of 2.2x10^<-3> Scm^<-1>. The enhancement of conductivity was due to the formation of the new, highly conductive, metastable crystalline phase. The main structural units of the crystal were the P_2S_7^<4-> ions.2.The Li_2S-P-S glasses were prepared by mechanical milling from the mixture of Li_2S and elemental phosphorus and sulfur. The Li_2S-P-S glass-ceramics contained mainly PS_4^<3-> ions with a small amount of S-S bonds, and the homo bonds present in the corresponding glasses almost disappeared by the heat treatment of the glasses.3.The all-solid-state cells with the combination of the SnS-P_2S_5 glassy electrode and the Li_2S-P_2S_5 glass-ceramic electrolyte were constructed. The cell using the 80SnS - 20P_2S_5 glass as an anode worked as a secondary battery, which was a first step of glassy monolithic cells with a common glass network.4.All-solid-state cells using cathode materials consisting of sulfur and CuS were successfully prepared and exhibited excellent cycling performance at room temperature.5.The effects of conductive additives in composite positive electrodes on charge-discharge behaviors of all-solid-state In/LiCoO_2 cell with Li_2S-P_2S_5 glass-ceramic electrolytes were investigated. Under relatively high current densities, the cell with VGCF kept larger discharge capacities during 50 cycles compared with the cells with other conductive additives like AB.

1.采用机械球磨和热处理的方法制备了不同组成的Li_2S-P_2S_5系统微晶玻璃。通过机械球磨析晶得到的70Li_2S-30P_2S_5微晶玻璃具有较高的室温电导率，达到2.2 × 10 ~（-1）<-3>Scm ~（-1）<-1>。导电性的增强是由于形成了新的、高导电性的亚稳晶相。2<4->.以Li_2S和单质磷、硫的混合物为原料，采用机械球磨法制备了Li_2S-P-S玻璃。Li_2S-P_2S_5玻璃陶瓷主要含有PS_4 ~+<3->离子和少量的S-S键，热处理后玻璃中的均键几乎消失。3.将SnS-P_2S_5玻璃电极与Li_2S-P_2S_5玻璃陶瓷电解质组合，构建了全固态电池。使用80 SnS- 20P_2S_5玻璃作为阳极的电池用作二次电池，4.成功地制备了以硫和硫化铜为正极材料的全固态电池，并在室温下表现出优异的循环性能。5.研究了复合正极中导电添加剂对电池充放电性能的影响。研究了以Li_2S-P_2S_5玻璃陶瓷为电解质的全固态In/LiCoO_2电池的放电行为。在较高的电流密度下，VGCF的电池在50次循环中的放电容量比AB等导电添加剂的电池大。

项目成果

Characterization of Li2S-P2S5 glass-ceramics as a solid electrolyte for lithium secondary batteries

• DOI: 10.1016/j.ssi.2004.08.036
• 发表时间: 2004-11-30
• 期刊: SOLID STATE IONICS
• 影响因子: 3.2
• 作者: Hayashi, A;Hama, S;Tatsumisago, M
• 通讯作者: Tatsumisago, M

Mechanochemical Synthesis of SnO-B_2O_3 Glassy Anode Materials for Rechargeable Lithium Batteries

可充电锂电池SnO-B_2O_3玻璃质负极材料的机械化学合成

• 发表时间: 2004
• 期刊: J.Mater.Sci. 39
• 作者: Hiroshi Funakubo;Takayuki Watanabe;Takashi Kojima;Tomohiro Sakai;Yuji Noguchi;Masaru Miyayama;Minoru Osada;Masato Kakihana;Keisuke Saito;A.Hayashi
• 通讯作者: A.Hayashi

H.Morimoto: "Cathode Properties of Amorphous 66.7V_2O_5・33.3FeOOH Powders Obtained by Mechanical Milling Technique"Electrochemistry. 71[12]. 1036-1038 (2003)

H.Morimoto：“通过机械研磨技术获得的非晶态 66.7V_2O_5・33.3FeOOH 粉末的阴极性能”电化学 71[12]（2003）。

Characterization of SnO-MxOy (M=B and P) Glassy Anode Materials for Lithium Secondary Batteries Prepared by Melt-Quenching and Mechanical Milling

熔融淬火和机械研磨制备的锂二次电池SnO-MxOy（M=B和P）玻璃状负极材料的表征

• 发表时间: 2004
• 期刊: J.Ceram.Soc.Jpn. 112[5]
• 作者: G.PEZZOTTI;A.Hayashi
• 通讯作者: A.Hayashi

Amorphous Solid Electrolytes in the System Li_2S-Al_2S_3-S_iS_2 Prepared by Mechanical Milling

机械研磨制备Li_2S-Al_2S_3-S_iS_2体系中的非晶固体电解质

• 发表时间: 2004
• 期刊: J.Mater.Sci. 39
• 作者: A.Hayashi