Title "Electrochemical Reactions of Metal Fluorides with Lithium-ion Electrolytes in Carbon Nanopores"; ARO RESEARCH AREA 7: CHEMICAL SCIENCES. 7.2 Electrochemistry.
Abstract
Metal fluorides make an attractive class of conversion-type cathode materials, some of which exhibit some of the highest theoretical volumetric capacities and energy densities known. However, metal fluoride cathodes typically suffer from rapid degradation in electrochemical cells caused by the poor stability and high solubility of electrochemical reaction products. Our earlier experiments demonstrated that nano-confinement of metal fluorides in carbon nanopores may reduce or prevent their dissolution during electrochemical reactions with ether-based electrolytes. Unfortunately, the inter-related aspects of the electroadsorption and desorption, the rate, stability and hysteresis of the electrochemical conversion reactions, the electrolyte decomposition products and the dissolution of the reaction products of various metal fluorides with Li ion electrolytes in nano-confined spaces are very poorly understood. The overall objective of this project is to fill the existing gaps in knowledge and, for the first time, perform a systematic parametric study using a powerful combination of experimental and computational approaches. The proposed project will reveal the role, which the nanoscale and the produced interface architecture play in the ion transport phenomena, electrolyte decomposition reactions and the corrosion of nanostructured metal clusters and how the nanoscale interactions can be harnessed to control the stability and rates of conversion reactions at the nano-scale, unattainable in macroscopic dimensions.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 06, 2020
- Source ID
- W911NF1710053
Entities
People
- Gleb Yushin
Organizations
- Army Contracting Command
- Georgia Tech Research Corporation
- United States Army