High Capacity Pouch-Type Li–Air Batteries
- 1 January 2010
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 157 (7), A760-A764
- https://doi.org/10.1149/1.3414828
Abstract
The performance of pouch-type Li–air batteries operated in ambient conditions is reported in this work. The batteries use a heat-sealable plastic membrane to function simultaneously as the package material, an O2O2 diffusion membrane, and a moisture barrier. The large variation in the internal resistance of the batteries related to unstable contacts between electrodes and separators is stabilized by a modified separator that can bind the cell stack together. Cells using the modified separators show improved and repeatable discharge performance. We have also found that 1,2-dimethoxyethane (DME) as a co-solvent in the electrolyte plays an important role in increasing the discharge voltage of these pouch-type cells. However, an overly large amount of DME co-solvent in the electrolyte may lead to decreased capacity due to the eventual loss of DME through the diffusion membrane. Pouch-type Li–air batteries with the modified separator and the optimized electrolyte have demonstrated specific capacities of 2711mAhg−12711mAhg−1 based on carbon weight and specific energies of 344Whkg−1344Whkg−1 based on the complete battery weight, including the package.Keywords
This publication has 14 references indexed in Scilit:
- Optimization of Air Electrode for Li/Air BatteriesJournal of the Electrochemical Society, 2010
- Hybrid Air-Electrode for Li/Air BatteriesJournal of the Electrochemical Society, 2010
- Discharge characteristic of a non-aqueous electrolyte Li/O2 batteryJournal of Power Sources, 2009
- Air electrode design for sustained high power operation of Li/air batteriesJournal of Power Sources, 2009
- High-Capacity Lithium–Air CathodesJournal of the Electrochemical Society, 2009
- Ether-Based Electrolytes for the Lithium/Oxygen Organic Electrolyte BatteryJournal of the Electrochemical Society, 2006
- Lithium-air batteries using hydrophobic room temperature ionic liquid electrolyteJournal of Power Sources, 2005
- Oxygen Transport Properties of Organic Electrolytes and Performance of Lithium/Oxygen BatteryJournal of the Electrochemical Society, 2003
- Characterization of the Lithium/Oxygen Organic Electrolyte BatteryJournal of the Electrochemical Society, 2002
- A Polymer Electrolyte‐Based Rechargeable Lithium/Oxygen BatteryJournal of the Electrochemical Society, 1996