Cellulose nanofiber‐derived carbon aerogel for advanced room‐temperature sodium–sulfur batteries
Abstract Room‐temperature sodium–sulfur (RT/Na–S) batteries are regarded as promising large‐scale stationary energy storage systems owing to their high energy density and low cost as well as the earth‐abundant reserves of sodium and sulfur. However, the diffusion of polysulfides and sluggish kinetic...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-01-01
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| Series: | Carbon Energy |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/cey2.203 |
| _version_ | 1797974996502446080 |
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| author | Wu Yang Wang Yang Ren Zou Yongfa Huang Haihong Lai Zehong Chen Xinwen Peng |
| author_facet | Wu Yang Wang Yang Ren Zou Yongfa Huang Haihong Lai Zehong Chen Xinwen Peng |
| author_sort | Wu Yang |
| collection | DOAJ |
| description | Abstract Room‐temperature sodium–sulfur (RT/Na–S) batteries are regarded as promising large‐scale stationary energy storage systems owing to their high energy density and low cost as well as the earth‐abundant reserves of sodium and sulfur. However, the diffusion of polysulfides and sluggish kinetics of conversion reactions are still major challenges for their application. Herein, we developed a powerful and functional separator to inhibit the shuttle effect by coating a lightweight three‐dimensional cellulose nanofiber‐derived carbon aerogel on a glass fiber separator (denoted NSCA@GF). The hierarchical porous structures, favorable electronic conductivity, and three‐dimensional interconnected network of N,S‐codoped carbon aerogel endow a multifunctional separator with strong polysulfide anchoring capability and fast reaction kinetics of polysulfide conversion, which can act as the barrier layer and an expanded current collector to increase sulfur utilization. Moreover, the hetero‐doped N/S sites are believed to strengthen polysulfide anchoring capability via chemisorption and accelerate the redox kinetics of polysulfide conversion, which is confirmed from experimental and theoretical results. As a result, the assembled Na–S coin cells with the NSCA@GF separator showed a high reversible capacity (788.8 mAh g−1 at 0.1 C after 100 cycles) and superior cycling stability (only 0.059% capacity decay per cycle over 1000 cycles at 1 C), thereby demonstrating the significant potential for application in high‐performance RT/Na–S batteries. |
| first_indexed | 2024-04-11T04:28:36Z |
| format | Article |
| id | doaj.art-ca1c1a3ba03348658995b4bad62e2f15 |
| institution | Directory Open Access Journal |
| issn | 2637-9368 |
| language | English |
| last_indexed | 2024-04-11T04:28:36Z |
| publishDate | 2023-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Carbon Energy |
| spelling | doaj.art-ca1c1a3ba03348658995b4bad62e2f152022-12-29T14:03:27ZengWileyCarbon Energy2637-93682023-01-0151n/an/a10.1002/cey2.203Cellulose nanofiber‐derived carbon aerogel for advanced room‐temperature sodium–sulfur batteriesWu Yang0Wang Yang1Ren Zou2Yongfa Huang3Haihong Lai4Zehong Chen5Xinwen Peng6State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou ChinaState Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou ChinaState Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou ChinaState Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou ChinaState Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou ChinaState Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou ChinaState Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou ChinaAbstract Room‐temperature sodium–sulfur (RT/Na–S) batteries are regarded as promising large‐scale stationary energy storage systems owing to their high energy density and low cost as well as the earth‐abundant reserves of sodium and sulfur. However, the diffusion of polysulfides and sluggish kinetics of conversion reactions are still major challenges for their application. Herein, we developed a powerful and functional separator to inhibit the shuttle effect by coating a lightweight three‐dimensional cellulose nanofiber‐derived carbon aerogel on a glass fiber separator (denoted NSCA@GF). The hierarchical porous structures, favorable electronic conductivity, and three‐dimensional interconnected network of N,S‐codoped carbon aerogel endow a multifunctional separator with strong polysulfide anchoring capability and fast reaction kinetics of polysulfide conversion, which can act as the barrier layer and an expanded current collector to increase sulfur utilization. Moreover, the hetero‐doped N/S sites are believed to strengthen polysulfide anchoring capability via chemisorption and accelerate the redox kinetics of polysulfide conversion, which is confirmed from experimental and theoretical results. As a result, the assembled Na–S coin cells with the NSCA@GF separator showed a high reversible capacity (788.8 mAh g−1 at 0.1 C after 100 cycles) and superior cycling stability (only 0.059% capacity decay per cycle over 1000 cycles at 1 C), thereby demonstrating the significant potential for application in high‐performance RT/Na–S batteries.https://doi.org/10.1002/cey2.203carbon aerogelcellulose nanofiberN,S codopingredox kineticssodium–sulfur batteries |
| spellingShingle | Wu Yang Wang Yang Ren Zou Yongfa Huang Haihong Lai Zehong Chen Xinwen Peng Cellulose nanofiber‐derived carbon aerogel for advanced room‐temperature sodium–sulfur batteries Carbon Energy carbon aerogel cellulose nanofiber N,S codoping redox kinetics sodium–sulfur batteries |
| title | Cellulose nanofiber‐derived carbon aerogel for advanced room‐temperature sodium–sulfur batteries |
| title_full | Cellulose nanofiber‐derived carbon aerogel for advanced room‐temperature sodium–sulfur batteries |
| title_fullStr | Cellulose nanofiber‐derived carbon aerogel for advanced room‐temperature sodium–sulfur batteries |
| title_full_unstemmed | Cellulose nanofiber‐derived carbon aerogel for advanced room‐temperature sodium–sulfur batteries |
| title_short | Cellulose nanofiber‐derived carbon aerogel for advanced room‐temperature sodium–sulfur batteries |
| title_sort | cellulose nanofiber derived carbon aerogel for advanced room temperature sodium sulfur batteries |
| topic | carbon aerogel cellulose nanofiber N,S codoping redox kinetics sodium–sulfur batteries |
| url | https://doi.org/10.1002/cey2.203 |
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