Work

Ultra-lightweight rechargeable battery with enhanced gravimetric energy densities >750 Wh kg−1 in lithium–sulfur pouch cell

Year: 2024

Type: article

Abstract: Lithium–sulfur (Li–S) rechargeable batteries have been expected to be lightweight energy storage devices with the highest gravimetric energy density at the single-cell level reaching up to 695 Wh/kg-cell (a low rate of 0.005C, only in the first discharge). Sulfurized polyacrylonitrile (SPAN) is one of the sulfur-based active materials, which allows more freedom in the Li–S cell design because it shows no undesirable reactions with electrolyte solutions. An original Li–S pouch cell construction (ADEKA’s Lithium–Sulfur/Pouch Cell : ALIS-PC), the world's lightest rechargeable battery cell was designed by combining the SPAN cathode and state-of-the-art technologies. As a result, the highest gravimetric energy densities of 713 and 761 Wh/kg-cell after some charge-and-discharge cycles, which were based on the total mass of all cell components, were achieved with successful operating at 0.1 and 0.05C-rates, respectively, which significantly exceeded those of commercial lithium-ion and developed next-generation rechargeable batteries.

Source: Communications Engineering

DOI: 10.1038/s44172-024-00321-1

Authors: Kenji Kakiage, Toru Yano, Hiroki Uehara, Masaki Kakiage

Institutions: Adeka (Japan), Gunma University

Language: English

Topic: Advanced Battery Materials and Technologies

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $2,090