Anomalous High Ionic Conductivity of Nanoporous β-Li3PS4
Top Cited Papers
- 14 January 2013
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 135 (3), 975-978
- https://doi.org/10.1021/ja3110895
Abstract
Lithium-ion-conducting solid electrolytes hold promise for enabling high-energy battery chemistries and circumventing safety issues of conventional lithium batteries. Achieving the combination of high ionic conductivity and a broad electrochemical window in solid electrolytes is a grand challenge for the synthesis of battery materials. Herein we show an enhancement of the room-temperature lithium-ion conductivity by 3 orders of magnitude through the creation of nanostructured Li(3)PS(4). This material has a wide electrochemical window (5 V) and superior chemical stability against lithium metal. The nanoporous structure of Li(3)PS(4) reconciles two vital effects that enhance the ionic conductivity: (1) the reduction of the dimensions to a nanometer-sized framework stabilizes the high-conduction β phase that occurs at elevated temperatures, and (2) the high surface-to-bulk ratio of nanoporous β-Li(3)PS(4) promotes surface conduction. Manipulating the ionic conductivity of solid electrolytes has far-reaching implications for materials design and synthesis in a broad range of applications, including batteries, fuel cells, sensors, photovoltaic systems, and so forth.Keywords
This publication has 21 references indexed in Scilit:
- First Principles Study of the Li10GeP2S12 Lithium Super Ionic Conductor MaterialChemistry of Materials, 2011
- A lithium superionic conductorNature Materials, 2011
- Crystal structure and phase transitions of the lithium ionic conductor Li3PS4Solid State Ionics, 2011
- Size-controlled stabilization of the superionic phase to room temperature in polymer-coated AgI nanoparticlesNature Materials, 2009
- Nanoionics: ion transport and electrochemical storage in confined systemsNature Materials, 2005
- Nanostructured materials for advanced energy conversion and storage devicesNature Materials, 2005
- New, Highly Ion‐Conductive Crystals Precipitated from Li2S–P2S5 GlassesAdvanced Materials, 2005
- Local and overall ionic conductivity in nanocrystalline CaF2Solid State Ionics, 2000
- Ionic Conductivity Enhancement of the Fluoride Conductor CaF2 by Grain Boundary Activation Using Lewis AcidsJournal of the Electrochemical Society, 1995
- Ionic conductivity of and phase transition in lithium thiophosphate Li3PS4Solid State Ionics, 1984