Effects of Anion Clusters at Solid-State Electrolyte and Electrode Interfaces*

Stability and transport properties at the electrolyte-electrode interface are of great importance to the performance of all-solid-state batteries with solid-state electrolytes (SSEs). Most recent studies have shown that mono-/poly-anion clusters that are either original contained or doped in the SSE can lead to intriguing (transport, electronic, and mechanical) properties [1-6]. However, the effects of anion clusters on the SSE-electrode interfaces are unknown. Here, we will investigate such effects and unravel the working mechanisms using phase/reactivity analysis and explicit interface modeling.

1. H. Fang, P. Jena, Argyrodite-type advanced lithium conductors and transport mechanisms beyond paddle-wheel effect. Nature Communications 13, 2078, 2022.

2. R. L. Sacci, T. H. Bennett, H. Fang, K. S. Han, M. Lames, V. Murugesan, P. Jena, J. Nanda, Halide sublattice dynamics drive Li-ion transport in antiperovskites. J. Mater. Chem. A 10, 15731-15742, 2022.

3. X. Feng, H. Fang, P. Liu, N. Wu, E. Self, L. Yin, P. Wang, X. Li, P. Jena, J. Nanda, D. Mitlin, Heavily Tungsten-Doped Sodium Thioantimonate Solid-State Electrolytes with Exceptionally Low Activation Energy for Ionic Diffusion. Angew. Chem. Int. Ed. 60, 26158-26166, 2021.

4. H. Fang, P. Jena, Sodium Superionic Conductors Based on Clusters, ACS Appl. Mater. Interf. 11, 963, 2019.

5. H. Fang, P. Jena, Li-Rich Antiperovskite Superionic Conductors Based on Cluster Ions, Proc. Nat. Acad. Sci. 114, 11046-11051, 2017.

6. H. Fang, S. Wang, J. Liu, Q. Sun, P. Jena, Superhalogen-Based Li-Ion Superionic Conductors, J. Mater. Chem. A 5, 13373, 2017.