An Integrated Strategy towards Enhanced Performance of the Lithium-Sulfur Battery and its Fading Mechanism.
Chemistry
; 24(69): 18544-18550, 2018 Dec 10.
Article
in En
| MEDLINE
| ID: mdl-30265420
ABSTRACT
To fulfil the potential of Li-S batteries (LSBs) with high energy density and low cost, multiple challenges need to be addressed simultaneously. Most research in LSBs has been focused on the sulfur cathode design, although the performance is also known to be sensitive to other parameters such as binder, current collector, separator, lithium anode, and electrolyte. Here, an integrated LSB system based on the understanding of the different roles of binder, current collector, and separator is developed. By using the cross-linked carboxymethyl cellulose-citric acid (CMC-CA) binder, Toray carbon paper current collector, and reduced graphene oxide (rGO) coated separator, LSBs achieve a high capacity of 960â
mAh g-1 after 200â
cycles (2.5â
mg cm-2 ) and 930â
mAh g-1 after 50â
cycles (5â
mg cm-2 ) at 0.1â
C. Moreover, the failure mechanism at a high sulfur loading with characteristics of fast capacity decay and infinite charging is discussed. This work highlights the synergistic effect of different components and the challenges towards more reliable LSBs with high sulfur loading.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Chemistry
Journal subject:
QUIMICA
Year:
2018
Type:
Article
Affiliation country:
Australia