Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/78290
Title: Electrocatalysis on separator modified by molybdenum trioxide nanobelts for lithium-sulfur batteries
Authors: Imtiaz, S 
Zafar, ZA
Razaq, R
Sun, D
Xin, Y
Li, Q
Zhang, ZL
Zheng, L
Huang, YH
Anderson, JA
Keywords: Electrocatalysis
Lithium-sulfur battery
Molybdenum trioxide
Polysulfide shuttle
Issue Date: 2018
Publisher: Wiley-VCH
Source: Advanced materials interfaces, 9 Aug. 2018, v. 5, no. 15, 1800243 How to cite?
Journal: Advanced materials interfaces 
Abstract: Lithium-sulfur batteries (LSBs) have been regarded as the supreme feasible future generation energy storage system for high-energy applications due to the exceptional-specific energy density of 2600 Wh kg(-1) and theoretical-specific capacity of 1675 mAh g(-1). Nevertheless, some key challenges which are linked with polysulfide shuttling and sluggish kinetics of polysulfide conversion are the main obstacles in the high electrochemical performance of LSBs. Here, a molybdenum trioxide (MoO3) nanobelt catalytic layer is fabricated on the separator to solve these issues. The MoO3 layer shows strong chemical interaction with polysulfides by successfully blocking the polysulfides on the separator from shuttling and significantly accelerates the redox reaction of polysulfide conversion. Furthermore, the randomly arranged layers of MoO3 nanobelts possess enough porous networks that provide effective space for electrolyte infiltration and facile pathway for fast ion transportation. The resultant LSBs exhibit a very high initial capacity of 1377 mAh g(-1). After 200 cycles at 0.5 C, the capacity is 684.4 mAh g(-1) with the fading rate of only 0.251% per cycle. Additionally, the MoO3 modification provides good surface protection of lithium anode and depresses the lithium anode degradation.
URI: http://hdl.handle.net/10397/78290
ISSN: 2196-7350
DOI: 10.1002/admi.201800243
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

1
Citations as of Dec 15, 2018

WEB OF SCIENCETM
Citations

1
Last Week
1
Last month
Citations as of Dec 16, 2018

Page view(s)

15
Citations as of Dec 17, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.