Results 21 to 30 of about 2,092 (245)

Fast Heat Transport Inside Lithium-Sulfur Batteries Promotes Their Safety and Electrochemical Performance

open access: yesiScience, 2020
Summary: Lithium-sulfur batteries are paid much attention owing to their high specific capacity and energy density. However, their practical applications are impeded by poor electrochemical performance due to the dissolved polysulfides. The concentration
Guiyin Xu   +10 more
doaj   +1 more source

A Separator Modified with Rutile Titania and Three‐Dimensional Interconnected Graphene‐Like Carbon for Advanced Li−S Batteries

open access: yesChemElectroChem, 2022
As an advanced energy‐storage system, Li−S batteries have attracted much attention, but there is still a series of problems hindering their commercialization, such as the ‘shuttle effect’ and corrosion of lithium anodes.
Shuang Xia   +11 more
doaj   +1 more source

A Honeycomb‐Structured CoF2‐Modified Separator Enabling High‐Performance Lithium−Sulfur Batteries

open access: yesSmall Science, 2023
Sulfur cathode materials in lithium–sulfur chemistry suffer from poor electronic conductivity and shuttle of lithium polysulfides during charging and discharging.
Wenxin Liu   +6 more
doaj   +1 more source

Isolated Fe-Co heteronuclear diatomic sites as efficient bifunctional catalysts for high-performance lithium-sulfur batteries

open access: yesNature Communications, 2023
The slow redox kinetics of polysulfides and the difficulties in decomposition of Li2S are two serious obstacles to lithium-sulfur batteries. Here, the authors report an isolated Fe-Co heteronuclear diatomic catalyst to achieve high efficiency ...
Xun Sun   +9 more
doaj   +1 more source

A Lamellar Yolk–Shell Lithium‐Sulfur Battery Cathode Displaying Ultralong Cycling Life, High Rate Performance, and Temperature Tolerance

open access: yesAdvanced Science, 2022
The shuttling behavior and slow conversion kinetics of the intermediate lithium polysulfides are the severe obstacles for the application of lithium‐sulfur (Li‐S) batteries over a wide temperature range.
Jinyun Liu   +7 more
doaj   +1 more source

HsGDY on Ni Foam for Loading MoS2/Ni3S2 to Enhance the Performance on Lithium–Sulfur Batteries

open access: yesEnergy Material Advances, 2023
Lithium–sulfur batteries are considered important devices for the power of movable equipment, but there are still some challenges that limit their applications, such as how to obtain a cathode for high sulfide adsorption and rapid conversion. Here, a new
Jiao Xiang   +8 more
doaj   +1 more source

Fabrication of a Covalent Triazine Framework Functional Interlayer for High-Performance Lithium–Sulfur Batteries

open access: yesNanomaterials, 2022
The shuttling effect of polysulfides is one of the major problems of lithium–sulfur (Li–S) batteries, which causes rapid capacity fading during cycling.
Ben Hu   +7 more
doaj   +1 more source

Exceptional catalytic effects of black phosphorus quantum dots in shuttling-free lithium sulfur batteries

open access: yesNature Communications, 2018
Lithium sulfur batteries are promising for next-generation energy storage, but are hindered by polysulfide shuttle effects. Here the authors use black phosphorus quantum dots to adsorb and catalyze the conversion of lithium polysulfides to lithium ...
Zheng-Long Xu   +8 more
doaj   +1 more source

A highly efficient polysulfide mediator for lithium–sulfur batteries [PDF]

open access: yesNature Communications, 2015
The lithium-sulfur battery is receiving intense interest because its theoretical energy density exceeds that of lithium-ion batteries at much lower cost, but practical applications are still hindered by capacity decay caused by the polysulfide shuttle.
Xiao, Liang   +5 more
openaire   +2 more sources

Hierarchical Primary‐Secondary Coordination Synchronizes Ion Flux and Sulfur Redox in Solid Polymer Electrolytes

open access: yesAdvanced Functional Materials, EarlyView.
Hierarchical coordination engineering redistributes Li+ from anion‐dominated pairing toward polymer‐mediated binding. Strong primary sites promote salt dissociation, while distributed secondary sites sustain dynamic hopping pathways. This coordination landscape couples ion flux with polysulfide conversion, suppresses transport‐conversion decoupling ...
Zhong‐Wei Zheng   +8 more
wiley   +1 more source

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