Controlling Cell Components to Design High‐Voltage All‐Solid‐State Lithium‐Ion Batteries

Abstract

All‐solid‐state batteries with solid ionic conductors packed between solid electrode films can release the dead space between them, enabling a greater number of cells to stack, generating higher voltage to the pack. This Review is focused on using high‐voltage cathode materials, in which the redox peak of the components is extended beyond 4.7 V. Li−Ni−Mn−O systems are currently under investigation for use as the cathode in high‐voltage cells. Solid electrolytes compatible with the cathode, including halide‐ and sulfide‐based electrolytes, are also reviewed. Discussion extends to the compatibility between electrodes and electrolytes at such extended potentials. Moreover, control over the thickness of the anode is essential to reduce solid‐electrolyte interphase formation and growth of dendrites. The Review discusses routes toward optimization of the cell components to minimize electrode‐electrolyte impedance and facilitate ion transportation during the battery cycle.

Evaluation of solid electrolytes: Development of conventional and interdisciplinary approaches

“…Detection and analysis of SSLBs challenges such as electrode-electrolyte interfacial problems, slow ion transport, and traditional structural characterization were studied. [6,[20][21][22][23][24][25][26] These reviews are helpful because they provide an overview of the operating principles and material design in the various SSLB systems. However, few manuscripts present an in-depth examination and procedures of the conventional electrochemical techniques utilized to assess novel SE candidates.…”