Jump to main content
Jump to site search

Issue 40, 2017
Previous Article Next Article

Compact high volumetric and areal capacity lithium sulfur batteries through rock salt induced nano-architectured sulfur hosts

Author affiliations

Abstract

Tremendous efforts have been put into designing high gravimetric energy density lithium sulfur batteries (LIS) through increasing the areal sulfur loading in the cathode, however little to no attention has been paid to the volumetric energy density of LIS. Due to the low tap density of porous carbon as a common sulfur host, an excessively high electrode thickness per sulfur loading severely decreases the volumetric energy density to the point of little practical use. For the first time, a sulfur host with an engineered polymodal particle size distribution was utilized for compact high areal capacity sulfur electrodes. This material demonstrated the highest reported blade cast volumetric capacity of 495 mA h cm−3 at 5.4 mA h cm−2 while remaining true to traditional blade casting battery manufacturing processes. It demonstrated superior electrochemical activity at 0.1C by delivering capacities of 1010 mA h g−1 at 10.2 mg cm−2 and 1350 mA h g−1 at 4 mg cm−2 with good stability. Furthermore, even with its thin electrode profile of 86 μm at 4 mg cm−2 capacities of 1103 mA h g−1 and 972 mA h g−1 at 0.2C and 0.5C were achieved, respectively.

Graphical abstract: Compact high volumetric and areal capacity lithium sulfur batteries through rock salt induced nano-architectured sulfur hosts

Back to tab navigation

Supplementary files

Publication details

The article was received on 28 Jul 2017, accepted on 29 Aug 2017 and first published on 29 Aug 2017


Article type: Paper
DOI: 10.1039/C7TA06657K
Citation: J. Mater. Chem. A, 2017,5, 21435-21441
  •   Request permissions

    Compact high volumetric and areal capacity lithium sulfur batteries through rock salt induced nano-architectured sulfur hosts

    M. Li, Y. Zhang, F. Hassan, W. Ahn, X. Wang, W. W. Liu, G. Jiang and Z. Chen, J. Mater. Chem. A, 2017, 5, 21435
    DOI: 10.1039/C7TA06657K

Search articles by author

Spotlight

Advertisements