Hitachi's RD Challenges of High Performance Lithium Ion Batteries for Specialty Applications

摘要

We have been developing the various elemental technologies of LIB for automotive application. 1. High energy density battery 320Wh/kg of initial energy density and over 90% of capacity retention after 100 cycle were performed by 30 Ah laminate battery. 2. Essentially Safe Battery Novel electrolyte exhibiting highly safe and high ionic conductivity were developed, and 100 Wh class laminate type cell was successfully fabricated, and its safety was verified in nail penetration test. 3. Lifetime prediction Lifetime prediction accuracy was improved by divided deterioration parameters, which have different time constant.