Hydrogen Storage Properties of the Oxide Proton Conductors and their Application to the Secondary Batteries

氧化物质子导体的储氢性能及其在二次电池中的应用

• 批准号: 12650824
• 负责人: ESAKA Takao
• 金额: $ 2.18万
• 依托单位: TOTTORI UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650824/
• 关键词: Oxide; Proton conductor; Hydrogen storage; Secondary battery; Anode material; 酸化物プロトン伝導体; 水素放出

In order to check the application of proton conductivity double oxides, SrCe_<0.95>M_<0.05>O_<3-δ>(M = Yb, Pr, Tm and Tb), to anode active materials in nickel-hydrogen batteries, hydrogen absorption-desorption characteristics of the proton conducting oxides were firstly investigated using an electrochemical technique in alkaline solutions. As a result, it was found that the oxide can electrochemically repeat hydrogen absorption and desorption like hydrogen storage alloys. The absorption-desorption performance changes depending on the kind of doped rare earth element. The highest absorption-desorption capacity is 1.11 hydrohen for one formula weight of the oxide in the case of SrCe_<0.95>Yb_<0.05>O_<3-δ>.Subsequently, we attempted to improve activation properties of a hydrogen storage alloy, MmNi_<3.72>Co_<0.60>Mn_<0.45>Al_<0.32>, by mixing the proton conducting oxide. As a result, the oxide-alloy composite was found to enhance the activation performance of anode in Ni-metal hydride battery. The proton conducting oxide lying in the surface corrosion layer of alloy particle would play a role as a new path for hydrogen atoms to go into the alloy.

为了考察质子导电复合氧化物SrCe <0.95>M <0.05>O &lt;3-δ&gt;（M = Yb，Pr，Tm和Tb）在镍氢电池负极活性材料中的应用，首次采用电化学方法研究了质子导电复合氧化物在碱性溶液中的吸放氢特性。结果发现，该氧化物可以像储氢合金一样电化学地重复吸放氢。吸附-脱附性能的变化取决于掺杂的稀土元素的种类。以SrCe_ Yb_ O_（3-δ）为例，其最大吸放氢量为1.11氢<0.95><0.05><3.72><0.60><0.45>·g-1<0.32>。结果表明，氧化物-合金复合材料可提高镍氢电池负极的活化性能。位于合金颗粒表面腐蚀层中的质子导电氧化物将作为氢原子进入合金的新通道。

项目成果

T.Esaka: "Development of electrochemical measurements in IONICS materials : Neutron radiography"Proceedings of the 7th Asian Conference on Solid State Ionics, Materials & Devices. 41-50 (2000)

T.Esaka：“IONICS 材料电化学测量的发展：中子射线照相术”第七届亚洲固态离子学、材料会议论文集

H.Sakaguchi et al.: "Hydrogenation Characteristic of the Proton Conducting Oxide-Hydrogen Storage Alloy Composite"Material Research Bulletin. (in press).

H.Sakaguchi等人：“质子传导氧化物-储氢合金复合材料的氢化特性”材料研究通报。

H.Morimoto, T.Esaka: "Cathodic Property of High Conductivity Ceramic Ca_<0.9>La_<0.1>MnO_<3-δ> in Saline Solutions"Electrochemistry. Vol.69, No.8. 612-614 (2001)

H.Morimoto、T.Esaka：“盐溶液中高电导陶瓷 Ca_<0.9>La_<0.1>MnO_<3-δ> 的阴极特性”电化学，第 69 卷，第 612-614 期。

H.Morimoto et al.: "Cathodic Property of High Conductivity Ceramic Ca_<0.9>La_<0.1>MuO_<3-δ> in Saline Solution"

H.Morimoto等人：“高导陶瓷Ca_<0.9>La_<0.1>MuO_<3-δ>在盐溶液中的阴极特性”

M.Hayashi et al.: "Lithium Ion Conduction in Scheelite-type Oxides and Analysis of Lithium Ion Motion by Neutron Radiography"Solid State Ionics. 140・1. 71-76 (2001)

M. Hayashi 等：“白钨矿型氧化物中的锂离子传导和中子射线照相分析锂离子运动”固体离子学 140・1（2001 年）。