Hun‐Gi Jung

Unveiling the Structural Advantages in PTFE‐Based Dry‐Processed Electrodes for Sulfide‐Based All‐Solid‐State Batteries via 3D Microstructure‐Resolved Analysis

ABSTRACT All‐solid‐state batteries (ASSBs) employing sulfide‐based solid electrolytes (SEs) are promising candidates for next‐generation lithium‐ion batteries owing to their high energy density and safety. Their electrochemical performance is strongly influenced by the electrode...

Stabilizing High-Voltage Operation in O3-Type Na-Layered Cathodes by Suppressing Distortion-Driven Fe Migration

Abstract Fe-based O3-type Na-layered oxides such as Na[Ni1/3Fe1/3Mn1/3]O2 are attractive cathodes based on earth-abundant elements, yet their high-voltage operation is limited by voltage decay and capacity fading. Here, we identify a distortion−migration cascade initiated by Fe3+...