Porous SiOCN with ultrafine CoSe2 nanoparticle modified separators for promoting polysulfides capture and redox kinetics in lithium-sulfur batteries
文献类型：期刊论文
| 作者 | Chen, Qingqing1,2; Hu, Jinlong2; Xia, Qi1,2; Li, Youpeng2; Zhong, Haoxiang2; Zhang, Lingzhi2 |
| 刊名 | MATERIALS TODAY COMMUNICATIONS
 |
| 出版日期 | 2022-06-01 |
| 卷号 | 31页码:9 |
| 关键词 | Modified separators Ultrafine CoSe2 nanoparticle Porous silicon oxycarbonitride Redox kinetics Lithium-sulfur batteries |
| DOI | 10.1016/j.mtcomm.2022.103743 |
| 通讯作者 | Zhang, Lingzhi(lzzhang@ms.giec.ac.cn) |
| 英文摘要 | Ultrafine CoSe2 nanoparticle/porous silicon oxycarbonitride composite (CoSe2/P-SiOCN) is developed as modifying material of separator to improve the electrochemical performance of lithium-sulfur batteries by promoting polysulfides (LiPSs) trapping and the redox kinetics of sulfur species. CoSe2/P-SiOCN is prepared through pyrolyzing the Schiff-base-SiO2 precursors with Co2+ ions, subsequent selenylation and removal of silica domain. The conventional separator is modified by coating CoSe2/P-SiOCN on the side for facing sulfur cathode. In this structural design, the porous structure of silicon oxycarbonitride (P-SiOCN) functions as polysulfides trapping and support matrix of CoSe2 nanoparticles, while the ultrafine CoSe2 nanoparticles (similar to 7.8 nm) can efficiently promote the redox kinetics of sulfur species. The cell with CoSe2/P-SiOCN modified separator exhibits better cycling and rate performance than that with P-SiOCN modified separator and the pristine separator. At 1 C, the cell delivers a high reversible discharge capacity of 568.1 mAh g(-1) after 400 cycles with a low capacity decay of 0.042 % per cycle. |
| WOS关键词 | AMORPHOUS-SILICON OXYCARBIDE ; CARBON ; INTERLAYER |
| 资助项目 | National Natural Science Foundation of China[22075288] ; Guangzhou Science and Technology Project[202102020323] ; Guangdong Basic, Applied Basic Research Foundation[2020A1515110273] ; China Postdoctoral Science Foundation[2020M682938] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000879319200004 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Guangzhou Science and Technology Project ; Guangdong Basic, Applied Basic Research Foundation ; China Postdoctoral Science Foundation |
| 源URL | [http://ir.giec.ac.cn/handle/344007/37698]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Zhang, Lingzhi |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangdong Key Lab New & Renewable Energy Res & De, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Qingqing,Hu, Jinlong,Xia, Qi,et al. Porous SiOCN with ultrafine CoSe2 nanoparticle modified separators for promoting polysulfides capture and redox kinetics in lithium-sulfur batteries[J]. MATERIALS TODAY COMMUNICATIONS,2022,31:9. |
| APA | Chen, Qingqing,Hu, Jinlong,Xia, Qi,Li, Youpeng,Zhong, Haoxiang,&Zhang, Lingzhi.(2022).Porous SiOCN with ultrafine CoSe2 nanoparticle modified separators for promoting polysulfides capture and redox kinetics in lithium-sulfur batteries.MATERIALS TODAY COMMUNICATIONS,31,9. |
| MLA | Chen, Qingqing,et al."Porous SiOCN with ultrafine CoSe2 nanoparticle modified separators for promoting polysulfides capture and redox kinetics in lithium-sulfur batteries".MATERIALS TODAY COMMUNICATIONS 31(2022):9. |
入库方式： OAI收割
来源：广州能源研究所
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