New solid-state Li-O2 battery with integrated electrolyte and cathode structure boosts performance
04 August 2015
A team at The Hong Kong University of Science and Technology has developed a novel solid-state Li-O2 battery with an integrated electrolyte and cathode structure with the aim of addressing two critical issues limiting the performance of conventional solid-state Li-air batteries: high internal resistance and limited three-phase boundaries (the interface of the electrode, electrolyte, and O2).
The team’s design, as described in a paper in the RSC journal Energy & Environmental Science, allows a thin electrolyte layer (about 10% of that in conventional batteries) and a highly porous cathode (78% in porosity), both of which contribute to a significant reduction in the internal resistance, while increasing triple-phase boundaries.
As a result, the battery outputs a discharge capacity as high as 14,200 mA h g-1carbon at 0.15 mA cm-2, and can sustain 100 cycles at a fixed capacity of 1,000 mA h g-1carbon. The novel integrated electrolyte and cathode structure represents a significant step toward the advancement of Li-O2 batteries.
—Zhu et.al
Resources
Xingbao Zhu, T. S. Zhao, Zhaohuan Wei, Peng Tan and Zhao Gang (2015) “A novel solid-state Li-O2 battery with an integrated electrolyte and cathode structure” Energy Environ. Sci. doi: 10.1039/C5EE01604
Wake me up, when it's on the retail shelves.
Posted by: Lad | 04 August 2015 at 06:00 PM