Enhancing the Performance of All-Solid-State Energy Storage Devices via Interfacial Reaction Analysis of Ion Storage and Ion Conduction Materials
- 1Department of Applied Chemistry for Environment, Faculty of Urban Environmental Sciences, Tokyo Metropolitan University
Abstract
All-solid-state batteries are promising next-generation energy-storage devices because they can offer improved safety and high energy density. However, their performance depends not only on the intrinsic properties of ion-storage materials (electrode active materials) and ion-conduction materials (solid electrolytes) but also on reactions at the resulting solid–solid interfaces. Accordingly, understanding and controlling these interfaces are critical to achieving high-performance all-solid-state batteries. Here, interfacial phenomena are examined from two complementary perspectives: interface control in practical powder-based all-solid-state batteries and fundamental analysis of interfacial reactions in model thin-film batteries. For practical powder-based systems, sulfide solid electrolytes, including Li7P2S8I, Li6PS5Cl, and Li10GeP2S12, were prepared by liquid-phase synthesis. Combined structural, spectroscopic, and electrochemical analyses showed that the synthesis route altered particle-surface chemistry, grain-boundary ion transport, composite-electrode microstructure, and, consequently, battery performance. Complementary model thin-film batteries were used to isolate and elucidate reactions at well-defined electrode/solid-electrolyte interfaces. Li2MnO3 showed markedly different electrochemical behavior in the all-solid-state configuration than in conventional liquid-electrolyte cells. Synchrotron in situ X-ray diffraction resolved the structural evolution accompanying reversible charge–discharge reactions, whereas operando hard X-ray photoelectron spectroscopy revealed reversible oxygen redox together with dynamic evolution of the electronic structure and band alignment during battery operation. Together, these results establish a framework that connects interface design in practical battery systems with mechanistic understanding of interfacial reactions derived from model systems. This interface-centered approach provides a basis for the rational design of higher-performance all-solid-state energy-storage devices.
Related
- Surfactant incorporation enhancing the two-electron transfer reaction of MnO2 cathode materials in aqueous Zn batteries
- Enhancing Near‐Room‐Temperature Thermoelectric Performance of n‐Type Mg3(Sb, Bi)2‐Based Materials via ZrB2 Heterointerface Engineering
- Enhancing the performance of nickel-cobalt selenide electrocatalyst on hydrochar support for oxygen evolution reaction
- Enhancing Interfacial Exciton Conversion in Blue Upconversion OLEDs through Oligomer-Controlled Molecular Orientation
- Temperature-Dependent Voltammetry Reveals the Potential-Dependent Formation of Reaction Species and Their Impact on Interfacial Excess Charge during the Ammonia Oxidation Reaction on Pt.
BibTeX
@article{hikima2026enhancing,
title = {{Enhancing the Performance of All-Solid-State Energy Storage Devices via Interfacial Reaction Analysis of Ion Storage and Ion Conduction Materials}},
author = {Kazuhiro HIKIMA},
journal = {Electrochemistry},
year = {2026},
month = oct,
doi = {10.5796/electrochemistry.26-00079},
url = {https://doi.org/10.5796/electrochemistry.26-00079},
note = {CC BY},
}
RIS
TY - JOUR
TI - Enhancing the Performance of All-Solid-State Energy Storage Devices via Interfacial Reaction Analysis of Ion Storage and Ion Conduction Materials
AU - Kazuhiro HIKIMA
PY - 2026
DA - 2026/10/30
JO - Electrochemistry
DO - 10.5796/electrochemistry.26-00079
UR - https://doi.org/10.5796/electrochemistry.26-00079
AB - All-solid-state batteries are promising next-generation energy-storage devices because they can offer improved safety and high energy density. However, their performance depends not only on the intrinsic properties of ion-storage materials (electrode active materials) and ion-conduction materials (solid electrolytes) but also on reactions at the resulting solid–solid interfaces. Accordingly, understanding and controlling these interfaces are critical to achieving high-performance all-solid-state batteries. Here, interfacial phenomena are examined from two complementary perspectives: interface control in practical powder-based all-solid-state batteries and fundamental analysis of interfacial reactions in model thin-film batteries. For practical powder-based systems, sulfide solid electrolytes, including Li7P2S8I, Li6PS5Cl, and Li10GeP2S12, were prepared by liquid-phase synthesis. Combined structural, spectroscopic, and electrochemical analyses showed that the synthesis route altered particle-surface chemistry, grain-boundary ion transport, composite-electrode microstructure, and, consequently, battery performance. Complementary model thin-film batteries were used to isolate and elucidate reactions at well-defined electrode/solid-electrolyte interfaces. Li2MnO3 showed markedly different electrochemical behavior in the all-solid-state configuration than in conventional liquid-electrolyte cells. Synchrotron in situ X-ray diffraction resolved the structural evolution accompanying reversible charge–discharge reactions, whereas operando hard X-ray photoelectron spectroscopy revealed reversible oxygen redox together with dynamic evolution of the electronic structure and band alignment during battery operation. Together, these results establish a framework that connects interface design in practical battery systems with mechanistic understanding of interfacial reactions derived from model systems. This interface-centered approach provides a basis for the rational design of higher-performance all-solid-state energy-storage devices.
SN - 2186-2451
ER -