Boron Nitride Nanotube-Based Separator for High-Performance Lithium-Sulfur Batteries
To prevent global warming, ESS development is in progress along with the development of electric vehicles and renewable energy. However, the state-of-the-art technology, i.e., lithium-ion batteries, has reached its limitation, and thus the need for high-performance batteries with improved energy and...
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| Format: | Article |
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MDPI AG
2021-12-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/1/11 |
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| author | Hong-Sik Kim Hui-Ju Kang Hongjin Lim Hyun Jin Hwang Jae-Woo Park Tae-Gyu Lee Sung Yong Cho Se Gyu Jang Young-Si Jun |
| author_facet | Hong-Sik Kim Hui-Ju Kang Hongjin Lim Hyun Jin Hwang Jae-Woo Park Tae-Gyu Lee Sung Yong Cho Se Gyu Jang Young-Si Jun |
| author_sort | Hong-Sik Kim |
| collection | DOAJ |
| description | To prevent global warming, ESS development is in progress along with the development of electric vehicles and renewable energy. However, the state-of-the-art technology, i.e., lithium-ion batteries, has reached its limitation, and thus the need for high-performance batteries with improved energy and power density is increasing. Lithium-sulfur batteries (LSBs) are attracting enormous attention because of their high theoretical energy density. However, there are technical barriers to its commercialization such as the formation of dendrites on the anode and the shuttle effect of the cathode. To resolve these issues, a boron nitride nanotube (BNNT)-based separator is developed. The BNNT is physically purified so that the purified BNNT (p−BNNT) has a homogeneous pore structure because of random stacking and partial charge on the surface due to the difference of electronegativity between B and N. Compared to the conventional polypropylene (PP) separator, the p−BNNT loaded PP separator prevents the dendrite formation on the Li metal anode, facilitates the ion transfer through the separator, and alleviates the shuttle effect at the cathode. With these effects, the p−BNNT loaded PP separators enable the LSB cells to achieve a specific capacity of 1429 mAh/g, and long-term stability over 200 cycles. |
| first_indexed | 2024-03-10T03:29:18Z |
| format | Article |
| id | doaj.art-cd9d36182ac545b792eeb8ba2f02ae82 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T03:29:18Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-cd9d36182ac545b792eeb8ba2f02ae822023-11-23T12:00:12ZengMDPI AGNanomaterials2079-49912021-12-011211110.3390/nano12010011Boron Nitride Nanotube-Based Separator for High-Performance Lithium-Sulfur BatteriesHong-Sik Kim0Hui-Ju Kang1Hongjin Lim2Hyun Jin Hwang3Jae-Woo Park4Tae-Gyu Lee5Sung Yong Cho6Se Gyu Jang7Young-Si Jun8School of Chemical Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, KoreaDepartment of Advanced Chemicals & Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, KoreaFunctional Composite Materials Research Center, Institute of Advanced Composites Materials, Korea Institute of Science and Technology, Wanju, Jeonbuk 55324, KoreaSchool of Chemical Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, KoreaSchool of Chemical Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, KoreaDepartment of Advanced Chemicals & Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, KoreaDepartment of Environment and Energy Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, KoreaFunctional Composite Materials Research Center, Institute of Advanced Composites Materials, Korea Institute of Science and Technology, Wanju, Jeonbuk 55324, KoreaSchool of Chemical Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, KoreaTo prevent global warming, ESS development is in progress along with the development of electric vehicles and renewable energy. However, the state-of-the-art technology, i.e., lithium-ion batteries, has reached its limitation, and thus the need for high-performance batteries with improved energy and power density is increasing. Lithium-sulfur batteries (LSBs) are attracting enormous attention because of their high theoretical energy density. However, there are technical barriers to its commercialization such as the formation of dendrites on the anode and the shuttle effect of the cathode. To resolve these issues, a boron nitride nanotube (BNNT)-based separator is developed. The BNNT is physically purified so that the purified BNNT (p−BNNT) has a homogeneous pore structure because of random stacking and partial charge on the surface due to the difference of electronegativity between B and N. Compared to the conventional polypropylene (PP) separator, the p−BNNT loaded PP separator prevents the dendrite formation on the Li metal anode, facilitates the ion transfer through the separator, and alleviates the shuttle effect at the cathode. With these effects, the p−BNNT loaded PP separators enable the LSB cells to achieve a specific capacity of 1429 mAh/g, and long-term stability over 200 cycles.https://www.mdpi.com/2079-4991/12/1/11lithium-sulfur batteriesboron nitride nanotubesfunctional separatorslithium-ion transportshuttle effect |
| spellingShingle | Hong-Sik Kim Hui-Ju Kang Hongjin Lim Hyun Jin Hwang Jae-Woo Park Tae-Gyu Lee Sung Yong Cho Se Gyu Jang Young-Si Jun Boron Nitride Nanotube-Based Separator for High-Performance Lithium-Sulfur Batteries Nanomaterials lithium-sulfur batteries boron nitride nanotubes functional separators lithium-ion transport shuttle effect |
| title | Boron Nitride Nanotube-Based Separator for High-Performance Lithium-Sulfur Batteries |
| title_full | Boron Nitride Nanotube-Based Separator for High-Performance Lithium-Sulfur Batteries |
| title_fullStr | Boron Nitride Nanotube-Based Separator for High-Performance Lithium-Sulfur Batteries |
| title_full_unstemmed | Boron Nitride Nanotube-Based Separator for High-Performance Lithium-Sulfur Batteries |
| title_short | Boron Nitride Nanotube-Based Separator for High-Performance Lithium-Sulfur Batteries |
| title_sort | boron nitride nanotube based separator for high performance lithium sulfur batteries |
| topic | lithium-sulfur batteries boron nitride nanotubes functional separators lithium-ion transport shuttle effect |
| url | https://www.mdpi.com/2079-4991/12/1/11 |
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