This title appears in the Scientific Report :
2022
Please use the identifier:
http://dx.doi.org/10.1002/adfm.202200529 in citations.
Please use the identifier: http://hdl.handle.net/2128/31403 in citations.
Enhanced Polysulfide Conversion with Highly Conductive and Electrocatalytic Iodine‐Doped Bismuth Selenide Nanosheets in Lithium–Sulfur Batteries
Enhanced Polysulfide Conversion with Highly Conductive and Electrocatalytic Iodine‐Doped Bismuth Selenide Nanosheets in Lithium–Sulfur Batteries
The shuttling behavior and sluggish conversion kinetics of intermediate lithium polysulfides (LiPS) represent the main obstacles to the practical application of lithium–sulfur batteries (LSBs). Herein, an innovative sulfur host is proposed, based on an iodine-doped bismuth selenide (I-Bi2Se3), able...
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Personal Name(s): | Li, Mengyao |
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Yang, Dawei (Corresponding author) / Biendicho, Jordi Jacas / Han, Xu / Zhang, Chaoqi / Liu, Kun / Diao, Jiefeng / Li, Junshan / Wang, Jing / Heggen, Marc / Dunin-Borkowski, Rafal E. / Wang, Jiaao (Corresponding author) / Henkelman, Graeme / Morante, Joan Ramon / Arbiol, Jordi / Chou, Shu-Lei (Corresponding author) / Cabot, Andreu (Corresponding author) | |
Contributing Institute: |
Physik Nanoskaliger Systeme; ER-C-1 |
Published in: | Advanced functional materials, 32 (2022) 26, S. 2200529 - |
Imprint: |
Weinheim
Wiley-VCH
2022
|
DOI: |
10.1002/adfm.202200529 |
Document Type: |
Journal Article |
Research Program: |
Enabling Science and Technology through European Electron Microscopy Platform for Correlative, In Situ and Operando Characterization |
Link: |
Get full text Published on 2022-03-23. Available in OpenAccess from 2023-03-23. |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/31403 in citations.
The shuttling behavior and sluggish conversion kinetics of intermediate lithium polysulfides (LiPS) represent the main obstacles to the practical application of lithium–sulfur batteries (LSBs). Herein, an innovative sulfur host is proposed, based on an iodine-doped bismuth selenide (I-Bi2Se3), able to solve these limitations by immobilizing the LiPS and catalytically activating the redox conversion at the cathode. The synthesis of I-Bi2Se3 nanosheets is detailed here and their morphology, crystal structure, and composition are thoroughly. Density-functional theory and experimental tools are used to demonstrate that I-Bi2Se3 nanosheets are characterized by a proper composition and micro- and nano-structure to facilitate Li+ diffusion and fast electron transportation, and to provide numerous surface sites with strong LiPS adsorbability and extraordinary catalytic activity. Overall, I-Bi2Se3/S electrodes exhibit outstanding initial capacities up to 1500 mAh g−1 at 0.1 C and cycling stability over 1000 cycles, with an average capacity decay rate of only 0.012% per cycle at 1 C. Besides, at a sulfur loading of 5.2 mg cm−2, a high areal capacity of 5.70 mAh cm−2 at 0.1 C is obtained with an electrolyte/sulfur ratio of 12 µL mg−1. This work demonstrated that doping is an effective way to optimize the metal selenide catalysts in LSBs. |