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Long Cycle Life Solid-State Solid Polymer Electrolyte Cells

长循环寿命固态聚合物电解质电池

基本信息

批准号：
8619606
负责人：
Anthony Sammells
金额：
$ 20万
依托单位：
Eltron Research, Inc.
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1987
资助国家：
美国
起止时间：
1987-08-15 至 1990-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=8619606&HistoricalAwards=false
关键词：
Long Cycle Life Solid State

项目摘要

Two electrochemically reversible solid-state batteries using alkali-ion-conducting solid polymer electrolyte (SPE) are to be optimized. For lithium-conducting SPE, a lithium intercalating rutile material (LixWO2) will be used for the negative electrode and titanium disulfide for the positive electrode. In using sodium-conducting SPE, homogeneous matrix electrodes based upon transition metal doped "-alumina will be used for the respective positive and negative elctrodes. Here transition metals will be incorporated into immobile aluminum lattice sites within the "-alumina structure where changes in electrochemical potential upon cell charge/discharge cycling will occur via redox electrochemistry involving these doped immobile transition metal species. Secondary cells possessing these configurations had respective open-circuit potentials of 2.2 and 1.5V, demonstrated good electrochemical reversibility and had theoretical energy dentsities of 175 and 178 Wh/kg. Once the solid-state components are characterized and optimized, they will be incorporated into hermetically sealed prototypes. The anticipated high reliability of these secondary solid-state cells will make them good candidates for such varied applications as utility load leveling, reversible storage devices for electronic and electrochromic displays, in implanted biomedical applications, and reversible power sources in specialized aerospace applications.

两个电化学可逆固态电池，碱性离子传导性固体聚合物电解质（SPE）将被优化对于锂传导SPE，锂嵌入金红石材料（LixWO 2）将用于负电极和用于正极的二硫化钛。在使用钠导电SPE，均质基质电极，基于过渡金属掺杂 “-氧化铝将用于相应的正极和负极。这里过渡金属将被结合到固定的铝晶格位置中内 “-氧化铝结构，电池充电/放电循环时的电势将经由氧化还原发生涉及这些掺杂的不动过渡金属的电化学物种具有这些构型的二次电池具有分别为2.2和1.5V的开路电位，证明具有良好的电化学可逆性和理论能量密度为175和178 Wh/kg。一旦固态组件进行了表征和优化，它们将被纳入密封的原型这些二次固态的预期高可靠性细胞将使它们成为各种应用的良好候选者作为公用事业负荷平衡，可逆存储装置，电子和电致变色显示器，用于植入生物医学应用和可逆电源在专业航空航天应用。