A Promising Approach to Ultra‐Flexible 1 Ah Lithium–Sulfur Batteries Using Oxygen‐Functionalized Single‐Walled Carbon Nanotubes
Abstract Lithium–sulfur (Li‐S) batteries represent a promising solution for achieving high energy densities exceeding 500 Wh kg−1, leveraging cathode materials with theoretical energy densities up to 2600 Wh kg−1. These batteries are also cost‐effective, abundant, and environment‐friendly. In this s...
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2025-01-01
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| Online Access: | https://doi.org/10.1002/advs.202406536 |
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| author | Junyoung Heo Jeong‐Won Hong Ha Won Gu Junghwan Sung Dong‐Hee Kim Jung Hoon Kim Sung Kang You‐Jin Lee Hye Young Choi Doohun Kim Kang‐Jun Baeg Joong Tark Han Jun‐Woo Park |
| author_facet | Junyoung Heo Jeong‐Won Hong Ha Won Gu Junghwan Sung Dong‐Hee Kim Jung Hoon Kim Sung Kang You‐Jin Lee Hye Young Choi Doohun Kim Kang‐Jun Baeg Joong Tark Han Jun‐Woo Park |
| author_sort | Junyoung Heo |
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| description | Abstract Lithium–sulfur (Li‐S) batteries represent a promising solution for achieving high energy densities exceeding 500 Wh kg−1, leveraging cathode materials with theoretical energy densities up to 2600 Wh kg−1. These batteries are also cost‐effective, abundant, and environment‐friendly. In this study, an innovative approach is proposed utilizing highly oxidized single‐walled carbon nanotubes (Ox‐SWCNTs) as a conductive fibrous scaffold and functional interlayer in sulfur cathodes and separators, respectively, to demonstrate large‐area and ultra‐flexible Li‐S batteries with enhanced energy density. The free‐standing sulfur cathodes in the Li‐S cells exhibit high energy density maintaining 806 mAh g−1 even after 100 charge‐discharge cycles. Additionally, oxygen‐containing functional groups on the SWCNTs significantly improve electrochemical performance by promoting the adsorption of lithium polysulfides. Employing Ox‐SWCNTs in both cathodes and interlayers, the study achieves high‐capacity Li‐S pouch cells that consistently deliver a capacity of 1.06 Ah and a high energy density of 909 mAh g−1 over 50 charge‐discharge cycles. This strategy not only significantly enhances the electrochemical performance of Li‐S batteries but also maintains excellent mechanical flexibility under severe deformation, positioning this Ox‐SWCNT‐based architecture as a viable, light‐weight, and ultra‐flexible energy storage solution suitable for commercializing rechargeable Li‐S batteries. |
| format | Article |
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| institution | Kabale University |
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| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
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| series | Advanced Science |
| spelling | doaj-art-b60bbb2cabe644cc954c736a7ef19b4f2025-01-29T09:50:19ZengWileyAdvanced Science2198-38442025-01-01124n/an/a10.1002/advs.202406536A Promising Approach to Ultra‐Flexible 1 Ah Lithium–Sulfur Batteries Using Oxygen‐Functionalized Single‐Walled Carbon NanotubesJunyoung Heo0Jeong‐Won Hong1Ha Won Gu2Junghwan Sung3Dong‐Hee Kim4Jung Hoon Kim5Sung Kang6You‐Jin Lee7Hye Young Choi8Doohun Kim9Kang‐Jun Baeg10Joong Tark Han11Jun‐Woo Park12Next‐Generation Battery Research Center Korea Electrotechnology Research Institute (KERI) 12, Jeongiui‐gil, Seongsan‐gu, Changwon‐si Gyeongsangnam‐do 51543 Republic of KoreaNext‐Generation Battery Research Center Korea Electrotechnology Research Institute (KERI) 12, Jeongiui‐gil, Seongsan‐gu, Changwon‐si Gyeongsangnam‐do 51543 Republic of KoreaNext‐Generation Battery Research Center Korea Electrotechnology Research Institute (KERI) 12, Jeongiui‐gil, Seongsan‐gu, Changwon‐si Gyeongsangnam‐do 51543 Republic of KoreaNext‐Generation Battery Research Center Korea Electrotechnology Research Institute (KERI) 12, Jeongiui‐gil, Seongsan‐gu, Changwon‐si Gyeongsangnam‐do 51543 Republic of KoreaNext‐Generation Battery Research Center Korea Electrotechnology Research Institute (KERI) 12, Jeongiui‐gil, Seongsan‐gu, Changwon‐si Gyeongsangnam‐do 51543 Republic of KoreaNano Hybrid Technology Research Center Korea Electrotechnology Research Institute (KERI) 12, Jeongiui‐gil, Seongsan‐gu, Changwon‐si Gyeongsangnam‐do 51543 Republic of KoreaAnalysis and Assessment Research Center Research Institute of Industrial Science & Technology (RIST) 67 Cheongam‐ro, Nam‐gu Pohang‐si 37673 Republic of KoreaNext‐Generation Battery Research Center Korea Electrotechnology Research Institute (KERI) 12, Jeongiui‐gil, Seongsan‐gu, Changwon‐si Gyeongsangnam‐do 51543 Republic of KoreaNext‐Generation Battery Research Center Korea Electrotechnology Research Institute (KERI) 12, Jeongiui‐gil, Seongsan‐gu, Changwon‐si Gyeongsangnam‐do 51543 Republic of KoreaNext‐Generation Battery Research Center Korea Electrotechnology Research Institute (KERI) 12, Jeongiui‐gil, Seongsan‐gu, Changwon‐si Gyeongsangnam‐do 51543 Republic of KoreaMajor of Semiconductor Engineering Pukyong National University 45, Yongso‐ro, Nam‐gu Busan 48513 Republic of KoreaDepartment of Electro‐Functionality Materials Engineering University of Science and Technology (UST) 217, Gajeong‐ro, Yuseong‐gu Daejeon 34113 Republic of KoreaNext‐Generation Battery Research Center Korea Electrotechnology Research Institute (KERI) 12, Jeongiui‐gil, Seongsan‐gu, Changwon‐si Gyeongsangnam‐do 51543 Republic of KoreaAbstract Lithium–sulfur (Li‐S) batteries represent a promising solution for achieving high energy densities exceeding 500 Wh kg−1, leveraging cathode materials with theoretical energy densities up to 2600 Wh kg−1. These batteries are also cost‐effective, abundant, and environment‐friendly. In this study, an innovative approach is proposed utilizing highly oxidized single‐walled carbon nanotubes (Ox‐SWCNTs) as a conductive fibrous scaffold and functional interlayer in sulfur cathodes and separators, respectively, to demonstrate large‐area and ultra‐flexible Li‐S batteries with enhanced energy density. The free‐standing sulfur cathodes in the Li‐S cells exhibit high energy density maintaining 806 mAh g−1 even after 100 charge‐discharge cycles. Additionally, oxygen‐containing functional groups on the SWCNTs significantly improve electrochemical performance by promoting the adsorption of lithium polysulfides. Employing Ox‐SWCNTs in both cathodes and interlayers, the study achieves high‐capacity Li‐S pouch cells that consistently deliver a capacity of 1.06 Ah and a high energy density of 909 mAh g−1 over 50 charge‐discharge cycles. This strategy not only significantly enhances the electrochemical performance of Li‐S batteries but also maintains excellent mechanical flexibility under severe deformation, positioning this Ox‐SWCNT‐based architecture as a viable, light‐weight, and ultra‐flexible energy storage solution suitable for commercializing rechargeable Li‐S batteries.https://doi.org/10.1002/advs.202406536lithium polysulfideslithium–sulfur batteriesshuttle effectsingle‐walled carbon nanotubessulfur composite cathodes |
| spellingShingle | Junyoung Heo Jeong‐Won Hong Ha Won Gu Junghwan Sung Dong‐Hee Kim Jung Hoon Kim Sung Kang You‐Jin Lee Hye Young Choi Doohun Kim Kang‐Jun Baeg Joong Tark Han Jun‐Woo Park A Promising Approach to Ultra‐Flexible 1 Ah Lithium–Sulfur Batteries Using Oxygen‐Functionalized Single‐Walled Carbon Nanotubes Advanced Science lithium polysulfides lithium–sulfur batteries shuttle effect single‐walled carbon nanotubes sulfur composite cathodes |
| title | A Promising Approach to Ultra‐Flexible 1 Ah Lithium–Sulfur Batteries Using Oxygen‐Functionalized Single‐Walled Carbon Nanotubes |
| title_full | A Promising Approach to Ultra‐Flexible 1 Ah Lithium–Sulfur Batteries Using Oxygen‐Functionalized Single‐Walled Carbon Nanotubes |
| title_fullStr | A Promising Approach to Ultra‐Flexible 1 Ah Lithium–Sulfur Batteries Using Oxygen‐Functionalized Single‐Walled Carbon Nanotubes |
| title_full_unstemmed | A Promising Approach to Ultra‐Flexible 1 Ah Lithium–Sulfur Batteries Using Oxygen‐Functionalized Single‐Walled Carbon Nanotubes |
| title_short | A Promising Approach to Ultra‐Flexible 1 Ah Lithium–Sulfur Batteries Using Oxygen‐Functionalized Single‐Walled Carbon Nanotubes |
| title_sort | promising approach to ultra flexible 1 ah lithium sulfur batteries using oxygen functionalized single walled carbon nanotubes |
| topic | lithium polysulfides lithium–sulfur batteries shuttle effect single‐walled carbon nanotubes sulfur composite cathodes |
| url | https://doi.org/10.1002/advs.202406536 |
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