Single‐atomic tungsten‐doped Co3O4 nanosheets for enhanced electrochemical kinetics in lithium–sulfur batteries
Abstract The practical application of lithium–sulfur batteries (LSBs) is severely hindered by the undesirable shuttling of lithium polysulfides (LiPSs) and sluggish redox kinetics of sulfur species. Herein, a series of ultrathin single‐atomic tungsten‐doped Co3O4 (Wx‐Co3O4) nanosheets as catalytic a...
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| Format: | Article |
| Language: | English |
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Wiley
2023-08-01
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| Series: | Carbon Energy |
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| Online Access: | https://doi.org/10.1002/cey2.329 |
| _version_ | 1797736067997106176 |
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| author | Sangni Wang Riming Hu Ding Yuan Lei Zhang Chao Wu Tianyi Ma Wei Yan Rui Wang Liang Liu Xuchuan Jiang Hua Kun Liu Shi Xue Dou Yuhai Dou Jiantie Xu |
| author_facet | Sangni Wang Riming Hu Ding Yuan Lei Zhang Chao Wu Tianyi Ma Wei Yan Rui Wang Liang Liu Xuchuan Jiang Hua Kun Liu Shi Xue Dou Yuhai Dou Jiantie Xu |
| author_sort | Sangni Wang |
| collection | DOAJ |
| description | Abstract The practical application of lithium–sulfur batteries (LSBs) is severely hindered by the undesirable shuttling of lithium polysulfides (LiPSs) and sluggish redox kinetics of sulfur species. Herein, a series of ultrathin single‐atomic tungsten‐doped Co3O4 (Wx‐Co3O4) nanosheets as catalytic additives in the sulfur cathode for LSBs are rationally designed and synthesized. Benefiting from the enhanced catalytic activity and optimized electronic structure by W doping, the Wx‐Co3O4 not only reduces the shuttling of LiPSs but also decreases the energy barrier of sulfur redox reactions of sulfur species, leading to accelerated electrode kinetic. As a result, LSB cathodes with the use of 5.0 wt% W0.02‐Co3O4 as the electrocatalyst show the high reversible capacities of 1217.0 and 558.6 mAh g−1 at 0.2 and 5.0 C, respectively, and maintain a high reversible capacity of 644.6 mAh g−1 at 1.0 C (1.0 C = 1675 mA g−1) after 500 cycles. With a high sulfur loading of 5.5 mg cm−2 and electrolyte–electrode ratio of 8 μLelectrolyte mgsulfur−1, the 5.0 wt% W0.02‐Co3O4‐based sulfur cathode also retains a high reversible areal capacity of 3.86 mAh cm−2 at 0.1 C after 50 cycles with an initial capacity retention of 84.7%. |
| first_indexed | 2024-03-12T13:08:15Z |
| format | Article |
| id | doaj.art-4798e87ad5eb4fd6be293c109113afb2 |
| institution | Directory Open Access Journal |
| issn | 2637-9368 |
| language | English |
| last_indexed | 2024-03-12T13:08:15Z |
| publishDate | 2023-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | Carbon Energy |
| spelling | doaj.art-4798e87ad5eb4fd6be293c109113afb22023-08-28T08:53:45ZengWileyCarbon Energy2637-93682023-08-0158n/an/a10.1002/cey2.329Single‐atomic tungsten‐doped Co3O4 nanosheets for enhanced electrochemical kinetics in lithium–sulfur batteriesSangni Wang0Riming Hu1Ding Yuan2Lei Zhang3Chao Wu4Tianyi Ma5Wei Yan6Rui Wang7Liang Liu8Xuchuan Jiang9Hua Kun Liu10Shi Xue Dou11Yuhai Dou12Jiantie Xu13National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, Guangdong Provincial Key Laboratory of Atmospheric Environment, Pollution Control School of Environment and Energy South China University of Technology Guangzhou ChinaSchool of Materials Science and Engineering, Institute for Smart Materials & Engineering University of Jinan Jinan ChinaInstitute of Energy Materials Science University of Shanghai for Science and Technology Shanghai ChinaInstitute for Superconducting and Electronic Materials University of Wollongong Wollongong AustraliaInstitute for Superconducting and Electronic Materials University of Wollongong Wollongong AustraliaSchool of Science RMIT University Melbourne Victoria AustraliaState Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering Donghua University Shanghai ChinaNational Engineering Laboratory for VOCs Pollution Control Technology and Equipment, Guangdong Provincial Key Laboratory of Atmospheric Environment, Pollution Control School of Environment and Energy South China University of Technology Guangzhou ChinaNational Engineering Laboratory for VOCs Pollution Control Technology and Equipment, Guangdong Provincial Key Laboratory of Atmospheric Environment, Pollution Control School of Environment and Energy South China University of Technology Guangzhou ChinaSchool of Materials Science and Engineering, Institute for Smart Materials & Engineering University of Jinan Jinan ChinaInstitute of Energy Materials Science University of Shanghai for Science and Technology Shanghai ChinaInstitute of Energy Materials Science University of Shanghai for Science and Technology Shanghai ChinaShandong Institute of Advanced Technology Jinan ChinaNational Engineering Laboratory for VOCs Pollution Control Technology and Equipment, Guangdong Provincial Key Laboratory of Atmospheric Environment, Pollution Control School of Environment and Energy South China University of Technology Guangzhou ChinaAbstract The practical application of lithium–sulfur batteries (LSBs) is severely hindered by the undesirable shuttling of lithium polysulfides (LiPSs) and sluggish redox kinetics of sulfur species. Herein, a series of ultrathin single‐atomic tungsten‐doped Co3O4 (Wx‐Co3O4) nanosheets as catalytic additives in the sulfur cathode for LSBs are rationally designed and synthesized. Benefiting from the enhanced catalytic activity and optimized electronic structure by W doping, the Wx‐Co3O4 not only reduces the shuttling of LiPSs but also decreases the energy barrier of sulfur redox reactions of sulfur species, leading to accelerated electrode kinetic. As a result, LSB cathodes with the use of 5.0 wt% W0.02‐Co3O4 as the electrocatalyst show the high reversible capacities of 1217.0 and 558.6 mAh g−1 at 0.2 and 5.0 C, respectively, and maintain a high reversible capacity of 644.6 mAh g−1 at 1.0 C (1.0 C = 1675 mA g−1) after 500 cycles. With a high sulfur loading of 5.5 mg cm−2 and electrolyte–electrode ratio of 8 μLelectrolyte mgsulfur−1, the 5.0 wt% W0.02‐Co3O4‐based sulfur cathode also retains a high reversible areal capacity of 3.86 mAh cm−2 at 0.1 C after 50 cycles with an initial capacity retention of 84.7%.https://doi.org/10.1002/cey2.329catalytic additiveslithium–sulfur batteriessingle‐atomic dopantsluggish redox kinetics |
| spellingShingle | Sangni Wang Riming Hu Ding Yuan Lei Zhang Chao Wu Tianyi Ma Wei Yan Rui Wang Liang Liu Xuchuan Jiang Hua Kun Liu Shi Xue Dou Yuhai Dou Jiantie Xu Single‐atomic tungsten‐doped Co3O4 nanosheets for enhanced electrochemical kinetics in lithium–sulfur batteries Carbon Energy catalytic additives lithium–sulfur batteries single‐atomic dopant sluggish redox kinetics |
| title | Single‐atomic tungsten‐doped Co3O4 nanosheets for enhanced electrochemical kinetics in lithium–sulfur batteries |
| title_full | Single‐atomic tungsten‐doped Co3O4 nanosheets for enhanced electrochemical kinetics in lithium–sulfur batteries |
| title_fullStr | Single‐atomic tungsten‐doped Co3O4 nanosheets for enhanced electrochemical kinetics in lithium–sulfur batteries |
| title_full_unstemmed | Single‐atomic tungsten‐doped Co3O4 nanosheets for enhanced electrochemical kinetics in lithium–sulfur batteries |
| title_short | Single‐atomic tungsten‐doped Co3O4 nanosheets for enhanced electrochemical kinetics in lithium–sulfur batteries |
| title_sort | single atomic tungsten doped co3o4 nanosheets for enhanced electrochemical kinetics in lithium sulfur batteries |
| topic | catalytic additives lithium–sulfur batteries single‐atomic dopant sluggish redox kinetics |
| url | https://doi.org/10.1002/cey2.329 |
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