dc.contributor.author | Xu, R | en_US |
dc.contributor.author | Xiang, J | en_US |
dc.contributor.author | Feng, J | en_US |
dc.contributor.author | Lu, X | en_US |
dc.contributor.author | Hao, Z | en_US |
dc.contributor.author | Kang, L | en_US |
dc.contributor.author | Li, M | en_US |
dc.contributor.author | Wu, Y | en_US |
dc.contributor.author | Tan, C | en_US |
dc.contributor.author | Liu, Y | en_US |
dc.contributor.author | He, G | en_US |
dc.contributor.author | Brett, DJL | en_US |
dc.contributor.author | Shearing, PR | en_US |
dc.contributor.author | Yuan, L | en_US |
dc.contributor.author | Huang, Y | en_US |
dc.contributor.author | Wang, FR | en_US |
dc.date.accessioned | 2023-02-07T15:53:58Z | |
dc.date.issued | 2020-10-01 | en_US |
dc.identifier.issn | 2405-8297 | en_US |
dc.identifier.uri | https://qmro.qmul.ac.uk/xmlui/handle/123456789/84323 | |
dc.description.abstract | The lithium-sulfur (Li-S) batteries have high theoretical energy density, exceeding that of the lithium-ion batteries. However, their practical applications are hindered by the capacity decay due to lithium polysulfide shuttle effect and sulfur volume expansion. Here, we design a S@hollow carbon with porous shell/MnOx (S@HCS/MnOx) cathode to accommodate and immobilize sulfur and polysulfides, and develop a non-destructive technique X-ray computed tomography (X-ray CT) to in situ visualize the volume expansion of Li-S cathode. The designed cathode achieves a specific capacity of ~1100 mAh g-1 at 0.2 C with a fade rate of 0.18% per cycle over 300 cycles. The X-ray CT shows that only 16% volume expansion and 70% volume fraction of solid sulfur remaining in the S@HCS/MnOx cathode, superior to the commercial cathode with 40% volume expansion and 5% volume remaining of solid sulfur particles. This is the first reported visualization evidence for the effectiveness of hollow carbon structure in accommodating cathode volume expansion and immobilizing sulfur shuttling. X-ray CT can serve as a powerful in situ tool to trace the active materials and then feedback to the structure design, which helps develop efficient and reliable energy storage systems. | en_US |
dc.format.extent | 164 - 171 | en_US |
dc.publisher | Elsevier | en_US |
dc.relation.ispartof | Energy Storage Materials | en_US |
dc.title | In situ visualization by X-Ray computed tomography on sulfur stabilization and lithium polysulfides immobilization in S@HCS/MnO<inf>x</inf> cathode | en_US |
dc.type | Article | |
dc.rights.holder | Crown Copyright © 2020 Published by Elsevier B.V. All rights reserved. | |
dc.identifier.doi | 10.1016/j.ensm.2020.06.011 | en_US |
pubs.notes | Not known | en_US |
pubs.publication-status | Published | en_US |
pubs.volume | 31 | en_US |
rioxxterms.funder | Default funder | en_US |
rioxxterms.identifier.project | Default project | en_US |
qmul.funder | Sustainable Processing of Energy Materials from Waste::Engineering and Physical Sciences Research Council | en_US |