Development of All-solid-state Lithium Batteries with Energy Density

高能量密度全固态锂电池的开发

• 批准号: 15560591
• 负责人: MACHIDA Nobuya
• 金额: $ 1.98万
• 依托单位: Konan University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 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-15560591/
• 关键词: Lithium Battery; Solid State Battery; Solid Electrolyte; Sulfur; Silicon; Germanium; Lithium Alloy; Electrode Materials; 全固体電池; 負極材料; 正極材料; イオン伝導体; 硫化銅

Development of all-solid-state lithium batteries is strongly desired to replace commercially available lithium-ion batteries using conventional electrolyte solutions, because the all-solid-state batteries have some advantages, such as high reliability and high safety performance. For the development of the all-solid-state lithium batteries, non-flammable lithium-ion conducting solid electrolytes and also positive and negative electrode materials suitable for the all-solid-state batteries are indispensable materials. Phosphorus-sulfide based lithium-ion conducting materials have been prepared by a high-energy ball-milling process. The solid electrolytes in the system Li_2S-P_2S_3-P_2S_5 show high lithium-ion conductivity over 6 x 10^<-4> Scm^<-1> at room temperature and have been prominent electrochemical stability. New Li-Si alloy has been also prepared by the high-energy ball-milling process and investigated as negative electrode materials for the all-solid-state batteries. The new alloy shows large specific capacity about 300 mAhg^<-1> and good charge-discharge reversibility.

由于全固态电池具有高可靠性和高安全性能等优点，因此迫切需要开发全固态锂电池来替代市售的使用传统电解质溶液的锂离子电池。对于全固态锂电池的发展来说，不可燃的锂离子导电固体电解质以及适合全固态电池的正负极材料是不可缺少的材料。采用高能球磨工艺制备了硫化磷基锂离子导电材料。 Li_2S-P_2S_3-P_2S_5体系中的固体电解质在室温下表现出超过6 x 10^<-4> Scm^-1>的高锂离子电导率，并且具有突出的电化学稳定性。还通过高能球磨工艺制备了新型锂硅合金，并将其作为全固态电池的负极材料进行了研究。新合金表现出约300mAhg^-1>的大比容量和良好的充放电可逆性。

项目成果

A Mechano-Chemical Synthesis of Silver-ion Conductive Materials in the System AgI-Ag_2WO_4, -Part 1, Formation of Amorphous Materials and Their Ion Conducting Properites-

AgI-Ag_2WO_4 体系中银离子导电材料的机械化学合成，-第 1 部分，非晶材料的形成及其离子导电性能-

• 发表时间: 2004
• 期刊: J.Jpn.Soc.Powder and Powder Metallurgy 51
• 作者: N.Machida;N.Tomei;T.Shigematsu
• 通讯作者: T.Shigematsu

All-solid-state Lithium Battery with Sulfur as Positive Electrode

以硫为正极的全固态锂电池

• 发表时间: 2004
• 期刊: Chem.Lett. 33
• 作者: N.Machida;H.Yamamoto;S.Asano;T.Shigematsu;N.Machida;N.Machida;N.Machida
• 通讯作者: N.Machida

Preparation of Amorphous 75Li_2S- xP_2S_3-(25-x)P_2S_5 (mol%) Solid Electrolytes by a High-Energy Ball-Milling Process and Their Application for an All-Solid-State Lithium Battery

制备%20of%20无定形%2075Li_2S-%20xP_2S_3-(25-x)P_2S_5%20(mol%)%20固体%20电解质%20by%20a%20高能%20球磨%20工艺%20and%20其%20应用%20for%

• 发表时间: 2005
• 期刊: Solid State Ionics 176
• 作者: N.Machida;H.Yamamoto;S.Asano;T.Shigematsu
• 通讯作者: T.Shigematsu

Huifen Peng: "High Ag_2S-containing amorphous materials in the system Ag_2S-SiS_2 and their electrical properties"Electrochimica Acta. 48. 1893-1897 (2003)

彭惠芬：“Ag_2S-SiS_2体系中高Ag_2S非晶材料及其电学性能”《电化学学报》。

ナノ・IT時代の分子機能材料と素子開発

纳米/IT时代的分子功能材料与器件开发

• 发表时间: 2004
• 作者: H.Fukushima;Y.Ogino;G.Matuba;K.Nishida;T.Kanaya;辻岡強(分担執筆)
• 通讯作者: 辻岡強(分担執筆)