fan-functionalizedboron-2017.pdf (2.08 MB)
Functionalized boron nitride nanosheets/graphene interlayer for fast and long-life lithium–sulfur batteries
journal contribution
posted on 2017-07-01, 00:00 authored by Ye Fan, Z Yang, W Hua, Dan LiuDan Liu, Tao Tao, Md Mokhlesur RahmanMd Mokhlesur Rahman, Weiwei LeiWeiwei Lei, S Huang, Ying (Ian) ChenYing (Ian) ChenLithium–sulfur (Li–S) batteries have a much higher energy density than Li ion batteries and thus are considered as next generation batteries for electric vehicle applications. However, the problem of rapid capacity fading due to the shuttling of soluble polysulfides between electrodes remains the main obstacle for practical applications. Here, a thin and selective interlayer structure has been designed and produced to decrease the charge transfer resistance and mitigate the shuttling problem, simply by coating the surface of cathode with a thin film of functionalized boron nitride nanosheets/graphene. Due to this thin and ultralight interlayer, the specific capacity and cycling stability of the Li–S batteries with a cathode of sulfur-containing porous carbon nanotubes (≈60 wt% sulfur content) have been improved significantly with a life of over 1000 cycles, an initial specific capacity of 1100 mA h g −1 at 3 C, and a cycle decay as low as 0.0037% per cycle. This new interlayer provides a promising approach to significantly enhance the performance of Li–S batteries.
History
Journal
Advanced energy materialsVolume
7Issue
13Article number
1602380Pagination
1 - 6Publisher
WileyLocation
Chichester, Eng.Publisher DOI
Link to full text
ISSN
1614-6832eISSN
1614-6840Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2017, WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimUsage metrics
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boron nitridenanosheetllithium sulfur batteriesshuttle effect inhibitionScience & TechnologyPhysical SciencesTechnologyChemistry, PhysicalEnergy & FuelsMaterials Science, MultidisciplinaryPhysics, AppliedPhysics, Condensed MatterChemistryMaterials SciencePhysicsPERFORMANCECATHODEPOLYSULFIDENANOTUBESPAPER
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