Rational Design of Low Cost and High Energy Lithium Batteries through Tailored Fluorine-free Electrolyte and Nanostructured S/C Composite
Journal article, 2018

We report a new Li–S cell concept based on an optimized F-free catholyte solution and a high loading nanostructured C/S composite cathode. The Li2S8present in the electrolyte ensures both buffering against active material dissolution and Li+conduction. The high S loading is obtained by confining elemental S (≈80 %) in the pores of a highly ordered mesopores carbon (CMK3). With this concept we demonstrate stabilization of a high energy density and excellent cycling performance over 500 cycles. This Li–S cell has a specific capacity that reaches over 1000 mA h g−1, with an overall S loading of 3.6 mg cm−2and low electrolyte volume (i.e., 10 μL cm−2), resulting in a practical energy density of 365 Wh kg−1. The Li–S system proposed thus meets the requirements for large scale energy storage systems and is expected to be environmentally friendly and have lower cost compared with the commercial Li-ion battery thanks to the removal of both Co and F from the overall formulation.

composite

batteries

electrolyte

Li–S battery

lithium-ion

Author

Marco Agostini

Chalmers, Physics, Condensed Matter Physics

Du Hyun Lim

Chalmers, Physics, Condensed Matter Physics

Matthew Sadd

Chalmers, Physics, Condensed Matter Physics

Jang Yeon Hwang

Hanyang University

Sergio Brutti

Istituto Dei Sistemi Complessi, Rome

J. W. Heo

Gyeongsang National University

J. Ahn

Gyeongsang National University

Y. K. Sun

Hanyang University

Aleksandar Matic

Chalmers, Physics, Condensed Matter Physics

ChemSusChem

1864-5631 (ISSN) 1864-564X (eISSN)

Vol. 11 17 2981-2986

Subject Categories

Energy Engineering

Materials Chemistry

Energy Systems

DOI

10.1002/cssc.201801017

More information

Latest update

9/28/2018