SOLID ELECTROLYTE FOR ELECTROCHEMICAL ELEMENT AND ALL-SOLID BATTERY

• Main Author: YOKOYAMA ERINA
• Format: Patent
• Language: English; Japanese
• Published: 04.08.2016
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To provide a solid electrolyte for an electrochemical element, having chemically and structurally high stability and capable of achieving both higher output and higher heat resistance of a battery.SOLUTION: A solid electrolyte for an electrochemical element includes an ion conducting plastic crystal that is a complex of a plastic crystal containing a quaternary phosphonium cation and an ionic salt, a counter anion of the quaternary phosphonium cation being hexafluorophosphate, tetrafluoroborate or thiocyanate, and the ionic salt being a lithium salt, sodium salt, magnesium salt or aluminum salt.SELECTED DRAWING: Figure 1 【課題】化学的・構造的に安定性が高く、電池の高出力化及び高耐熱化を両立することが可能な電気化学素子用固体電解質の提供。【解決手段】４級ホスホニウムカチオンを含む柔粘性結晶とイオン性塩との複合体であるイオン伝導性柔粘性結晶を含み、前記４級ホスホニウムカチオンの対アニオンはヘキサフルオロホスファート、テトラフルオロボレート又はチオシアネートであり、前記イオン性塩はリチウム塩、ナトリウム塩、マグネシウム塩又はアルミニウム塩である電気化学素子用固体電解質。【選択図】図１