Performance Test and Examination Technologies of High Energy Solid-State Lithium Ion Batteries (SSLIB)

Nowadays, the international battery manufactories plan to mass produce high energy-storage products with 300Wh/kg or higher in 2020-2030 to double EV cars traveling distance. However, this will not be immediately effective meet the huge demands used in transporting vehicles. To connect this technical gap, we challenge high energy SSLIB (350Wh/kg) with following strategies: (1) Nickel-rich high working-voltage (>3.9V) cathode material with core-shell structure. (2) Lithium metal/ alloy anode with buffer layer and special morphology. (3) Nano-composited solid state electrolyte with inorganic oxide compound Li+ superconductor. (Total conductivity= 2*10-4S/cm @ rt.) Another part of this poster, we apply different temperature, voltage and current density limit to maximize the efficacy of SSLIB. Meanwhile, we force the battery to fail. To the best of our knowledge, there are limited literatures discussing about SSLIB failure mode. With in-situ micro- and macroscopic examination, we can exam SSLIB failure mechanism. With comparison of computerial simulation, we try to define SSLIB failure mode and establish SSLIB safety testing standards. Figure 1