Ultrahigh Sulfur Loading Tolerant Cathode Architecture with Extended Cycle Life for High  Energy Density Lithium–Sulfur Batteries

Akhil Mammoottil Abraham; Karsten Thiel; Mohsen ShakouriQunfeng XiaoAlisa PatersonJulian SchwenzelSathish Ponnurangamand Venkataraman Thangadurai

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Ultrahigh Sulfur Loading Tolerant Cathode Architecture with Extended Cycle Life for High Energy Density Lithium–Sulfur Batteries

机译：Ultrahigh Sulfur Loading Tolerant Cathode Architecture with Extended Cycle Life for High Energy Density Lithium–Sulfur Batteries

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Lithium–sulfur batteries are regarded as the imminent energy storage devicefor high energy density applications. However, at practical sulfur loadings>5 mg cm~(?2), the cell suffers from severe capacity fade and durability. In thepresent work, a hybrid MoS_2–WS_2 heterodimensional structure is reported. Thestrain induced growth of transition metal dichalcogenides preferentially exposesedge sites and maximizes the geometric coverage for anchoring-diffusionconversionof polysulfides to restrain the shuttle effect at practical S-loadings.The systematic analysis (5–50 mg cm~(?2) of S-loadings) reveals that the uniquecathode architecture exhibits reversible S-loading tolerance up to 28 mg cm~(?2).A high initial areal capacity of 32 mAh cm~(?2) with an area specific energy densityof 67 mWh cm~(?2) is achieved with a low electrolyte volume/S-loading ratio of5 mL g~(?1). The strategy presented here can unlock high S-loading Li–S cells withextended cyclability and high energy density.

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《Advanced energy materials》 |2022年第34期|2201494.1-2201494.17|共17页
作者
Akhil Mammoottil Abraham; Karsten Thiel; Mohsen ShakouriQunfeng XiaoAlisa PatersonJulian SchwenzelSathish Ponnurangamand Venkataraman Thangadurai;
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作者单位

Department of ChemistryUniversity of CalgaryCalgary, AB T2N 1N4, Canada;

Fraunhofer Institute for Manufacturing and Advanced Materials (IFAM)Wiener Str. 12, 28359 Bremen, Germany;

Canadian Light Source44 Innovation Boulevard, Saskatoon S7N 2V3, CanadaDepartment of Chemical and Petroleum EngineeringUniversity of CalgaryCalgary, AB T2N 1N4, Canada;

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正文语种英语
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expansion tolerant cathodes; high areal capacity; high energy density; lean electrolyte; lithium–sulfur batteries; ultrahigh sulfur loading;

Ultrahigh Sulfur Loading Tolerant Cathode Architecture with Extended Cycle Life for High Energy Density Lithium–Sulfur Batteries

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