Rational design of cathode formulation with halide electrolyte for solid-state battery assembly via dry process chemistry

All-solid-state lithium-ion batteries (SSBs) with halide solid electrolytes (SEs) have been developed to gain a high conductivity of 1 mS cm−1 through studies aiming at fast ionic conductivity of SEs. However, no matter how high the ionic conductivity of SE is, the design of cathode and electrolyte formulations is favourable for the improvement of contact between active material and SE for reaching the fully high ionic conductivity of SE compared to powder and achieving stable electrochemical performance. Therefore, the effective methods for preparing the composite electrode and SE should have better compatibility to be able to improve electro-chemomechanical aspects for manufacturing SSBs to develop scalable production technologies [1]. Here, this work, it was investigated the NMC cathode and halide SE formulation via the dry process chemistry for SSB assembly. It was considered the key parameter of optimization of the preparation of composite cathode and SE layer. It was shown the improvement of SSB strategy with NMC cathode and halide SE by modifying the mixing methods, their surface morphology, compatibility, processability, and electrochemical performance are compared. This project has received funding from the European Union's Horizon Europe programme for research and innovation under grant agreement No. 101069681 (HELENA project).
References
[1] A. Tron, R. Hamid, N. Zhang, A. Beutl, Nanomater. 2023, 13, 327.