Polydopamine as an interfacial layer to enhance mechanical and adhesive properties of the active materials in a sulfur cathode of sodium-sulfur batteries
Room temperature sodium-sulfur (Na-S) batteries are promising devices for energy storage system, but for practical applications volume expansion and detrimental shuttle effect of the sulfur cathode should be solved. Herein, we introduced a novel sulfur cathode system of using polydopamine (PDA) as a...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-08-01
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| Series: | Chemical Engineering Journal Advances |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666821122001120 |
| _version_ | 1818535860529790976 |
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| author | Shi-Lun Wang Jin-Long Hong |
| author_facet | Shi-Lun Wang Jin-Long Hong |
| author_sort | Shi-Lun Wang |
| collection | DOAJ |
| description | Room temperature sodium-sulfur (Na-S) batteries are promising devices for energy storage system, but for practical applications volume expansion and detrimental shuttle effect of the sulfur cathode should be solved. Herein, we introduced a novel sulfur cathode system of using polydopamine (PDA) as an interlayer in between sulfurized polyacrylonitrile (SPAN) active material and pullulan-graft-sodium polyacrylic acid (PuA) binder. Active NH and OH functional groups of PDA interlayer serve as facile hydrogen bonding (H bonding) and/or chemical reaction sites to various functional groups of SPAN and PuA, thus forming an intimately packed SPAN/PDA/PuA composite with sufficient mechanical and interfacial adhesive strengths to survive from the dimensional variation of sulfur cathode during charge/discharge cycling. Moreover, various functional groups of the SPAN/PDA/PuA are capable of absorbing polysulfides to limit the shuttle effect. Sulfur cathode derived from SPAN/PDA/PuA exhibited a high specific capacity of 1340 mAh g−1 after 100 cycles at 0.2 C. Without the PDA interlayer, sulfur cathode derived from SPAN/PuA exhibits a much lower capacity of 790 mAh g−1. The role of PDA in promoting the stability and electrochemical performance of sulfur cathode is thus verified in this study. |
| first_indexed | 2024-12-11T18:30:33Z |
| format | Article |
| id | doaj.art-6a62815e6cfc472e941b604edddd1fdc |
| institution | Directory Open Access Journal |
| issn | 2666-8211 |
| language | English |
| last_indexed | 2024-12-11T18:30:33Z |
| publishDate | 2022-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Chemical Engineering Journal Advances |
| spelling | doaj.art-6a62815e6cfc472e941b604edddd1fdc2022-12-22T00:54:56ZengElsevierChemical Engineering Journal Advances2666-82112022-08-0111100352Polydopamine as an interfacial layer to enhance mechanical and adhesive properties of the active materials in a sulfur cathode of sodium-sulfur batteriesShi-Lun Wang0Jin-Long Hong1Department of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung, Taiwan, 80424, Republic of ChinaCorresponding author.; Department of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung, Taiwan, 80424, Republic of ChinaRoom temperature sodium-sulfur (Na-S) batteries are promising devices for energy storage system, but for practical applications volume expansion and detrimental shuttle effect of the sulfur cathode should be solved. Herein, we introduced a novel sulfur cathode system of using polydopamine (PDA) as an interlayer in between sulfurized polyacrylonitrile (SPAN) active material and pullulan-graft-sodium polyacrylic acid (PuA) binder. Active NH and OH functional groups of PDA interlayer serve as facile hydrogen bonding (H bonding) and/or chemical reaction sites to various functional groups of SPAN and PuA, thus forming an intimately packed SPAN/PDA/PuA composite with sufficient mechanical and interfacial adhesive strengths to survive from the dimensional variation of sulfur cathode during charge/discharge cycling. Moreover, various functional groups of the SPAN/PDA/PuA are capable of absorbing polysulfides to limit the shuttle effect. Sulfur cathode derived from SPAN/PDA/PuA exhibited a high specific capacity of 1340 mAh g−1 after 100 cycles at 0.2 C. Without the PDA interlayer, sulfur cathode derived from SPAN/PuA exhibits a much lower capacity of 790 mAh g−1. The role of PDA in promoting the stability and electrochemical performance of sulfur cathode is thus verified in this study.http://www.sciencedirect.com/science/article/pii/S2666821122001120Sulfur cathode, Na-S batteryPolydopamine interlayerSulfurized polyacrylonitrileGrafted pullulan |
| spellingShingle | Shi-Lun Wang Jin-Long Hong Polydopamine as an interfacial layer to enhance mechanical and adhesive properties of the active materials in a sulfur cathode of sodium-sulfur batteries Chemical Engineering Journal Advances Sulfur cathode, Na-S battery Polydopamine interlayer Sulfurized polyacrylonitrile Grafted pullulan |
| title | Polydopamine as an interfacial layer to enhance mechanical and adhesive properties of the active materials in a sulfur cathode of sodium-sulfur batteries |
| title_full | Polydopamine as an interfacial layer to enhance mechanical and adhesive properties of the active materials in a sulfur cathode of sodium-sulfur batteries |
| title_fullStr | Polydopamine as an interfacial layer to enhance mechanical and adhesive properties of the active materials in a sulfur cathode of sodium-sulfur batteries |
| title_full_unstemmed | Polydopamine as an interfacial layer to enhance mechanical and adhesive properties of the active materials in a sulfur cathode of sodium-sulfur batteries |
| title_short | Polydopamine as an interfacial layer to enhance mechanical and adhesive properties of the active materials in a sulfur cathode of sodium-sulfur batteries |
| title_sort | polydopamine as an interfacial layer to enhance mechanical and adhesive properties of the active materials in a sulfur cathode of sodium sulfur batteries |
| topic | Sulfur cathode, Na-S battery Polydopamine interlayer Sulfurized polyacrylonitrile Grafted pullulan |
| url | http://www.sciencedirect.com/science/article/pii/S2666821122001120 |
| work_keys_str_mv | AT shilunwang polydopamineasaninterfaciallayertoenhancemechanicalandadhesivepropertiesoftheactivematerialsinasulfurcathodeofsodiumsulfurbatteries AT jinlonghong polydopamineasaninterfaciallayertoenhancemechanicalandadhesivepropertiesoftheactivematerialsinasulfurcathodeofsodiumsulfurbatteries |