DOI:
Optoelektron. napìvprovìd. teh. 61, 125-131 (2026)
H.K. Kochubei, O.V. Stronski.
SUPERIONIC AND ION-CONDUCTING CHALCOGENIDE GLASSES AS PROMISING MATERIALS FOR ALTERNATIVE ENERGY SYSTEMS (review)
This article considers superionic and ion-conducting chalcogenide glasses as a promising platform for solid-state electrochemical energy storage devices intended for renewable and distributed energy systems. It is shown that replacing liquid electrolytes with solid ion-conducting phases can improve the fire and operational safety of batteries, broaden their operating temperature range, reduce electrolyte leakage risks, and create prerequisites for the use of lithium or sodium metal anodes. Particular attention is paid to sulfide and oxysulfide glassy and glass-ceramic systems based on Li2S–P2S5, Li3PS4, Li7P3S11, argyrodite phases, halide-modified thiophosphates, and Na₃PS₄₋ₓOₓ, which combine high ionic conductivity with technological deformability and the ability to form dense contact with electrode materials. The influence of structural disorder, local coordination, interstitial volume, defect regions, interphase boundaries, and chemical modification on the formation of Li⁺, Na⁺, Ag⁺, and Cu⁺ migration channels is analyzed. Ag- and Cu-doped chalcogenide glasses are separately considered as a class of fast ion conductors in which doping can significantly increase electrical conductivity and open possibilities for next-generation electrolyte materials. The key technological barriers are summarized, including a narrow electrochemical stability window, reactive interphases with anodes and high-voltage cathodes, moisture sensitivity, H2S release risk, mechanical degradation, dendritic instability, the need for thin electrolyte layers, and the complexity of scalable manufacturing. It is emphasized that the practical implementation of these materials requires composition optimization, interface engineering, protective coatings, stack pressure control, moisture-resistant surface modification, and long-term testing of full-size cells. It is substantiated that chalcogenide glasses can serve as a basis for safe solid-state batteries for stationary energy storage, buffer storage units, large-scale sodium-based systems, and special-purpose energy devices.
Keywords: energy storage, renewable energy, solid-state batteries, chalcogenide glasses, superionic conductors, sulfide electrolytes, oxysulfide electrolytes, glass-ceramic electrolytes, ionic conductivity, lithium batteries, sodium batteries.