dc.contributor.authors |
Wang, Lei; Li, Xiaofang; Zhang, Yingxi; Mao, Weijian; Li, Yuanyuan; Chu, Paul K.; Kizilaslan, Abdulkadir; Zheng, Zijian; Huo, Kaifu |
|
dc.date.accessioned |
2022-12-20T13:25:20Z |
|
dc.date.available |
2022-12-20T13:25:20Z |
|
dc.date.issued |
2022 |
|
dc.identifier.issn |
1385-8947 |
|
dc.identifier.uri |
http://dx.doi.org/10.1016/j.cej.2022.137050 |
|
dc.identifier.uri |
https://hdl.handle.net/20.500.12619/99295 |
|
dc.description |
Bu yayının lisans anlaşması koşulları tam metin açık erişimine izin vermemektedir. |
|
dc.description.abstract |
Lithium-sulfur (Li-S) batteries are promising high-energy-density storage devices but severe shuttling of lithium polysulfides (LPSs), low sulfur utilization and sluggish reaction kinetics impede the practical applications. Herein, we report MoP clusters embedded in CMK-3 (cMoP-CMK-3) as a lightweight, conductive, and catalytic cathodic host with large sulfur mass loading for high energy Li-S batteries. The electronically conductive CMK-3 with ordered mesoporous channels could accommodate high loading and expansion of the active sulfur material and facilitate fast ionic/electronic transportation. The strong interaction between cMoP and CMK-3 results in concentrated Li ions inside the channels due to enhanced local electric field, significantly eliminating dead sulfur and improving sulfur utilization to over 90% due to confined catalytic effect. Moreover, the cMoP embedded into channels provide rich adsorptive and catalytic sites to effectively trap LPSs, and catalytically accelerate reaction kinetics. The resulting S@cMoP-CMK-3 cathode shows a large capacity of 1100 mAh g(-1) at 0.5C (1C = 1675 mA g(-1)) based on the total mass of cathode, high-rate capacity of 767.8 mAh g(-1) at 5C, and excellent cycle stability with 0.02% capacity fade per cycle over 500 cycles at 2C. This work demonstrates a confined catalytic strategy to improve the sulfur utilization for high-energy Li-S batteries. |
|
dc.language |
English |
|
dc.language.iso |
eng |
|
dc.relation.isversionof |
10.1016/j.cej.2022.137050 |
|
dc.subject |
Engineering |
|
dc.subject |
Lithium-sulfur battery |
|
dc.subject |
CMK-3 |
|
dc.subject |
Molybdenum phosphide |
|
dc.subject |
Confined catalytic effect |
|
dc.subject |
Lithium polysulfides |
|
dc.title |
Subnanometer MoP clusters confined in mesoporous carbon (CMK-3) as superior electrocatalytic sulfur hosts for high-performance lithium-sulfur batteries |
|
dc.contributor.authorID |
Kızılaslan, Abdulkadir/0000-0002-1967-5855 |
|
dc.contributor.authorID |
Chu, Paul K/0000-0002-5581-4883 |
|
dc.contributor.authorID |
ZHANG, Yingxi/0000-0001-8469-6671 |
|
dc.identifier.volume |
446 |
|
dc.relation.journal |
CHEMICAL ENGINEERING JOURNAL |
|
dc.identifier.doi |
10.1016/j.cej.2022.137050 |
|
dc.identifier.eissn |
1873-3212 |
|
dc.contributor.author |
Wang, Lei |
|
dc.contributor.author |
Li, Xiaofang |
|
dc.contributor.author |
Zhang, Yingxi |
|
dc.contributor.author |
Mao, Weijian |
|
dc.contributor.author |
Li, Yuanyuan |
|
dc.contributor.author |
Chu, Paul K. |
|
dc.contributor.author |
Kizilaslan, Abdulkadir |
|
dc.contributor.author |
Zheng, Zijian |
|
dc.contributor.author |
Huo, Kaifu |
|
dc.relation.publicationcategory |
Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı |
|