Novel Doughnutlike Graphene Quantum Dot-Decorated Composites for High-Performance Li-S Batteries Displaying Dual Immobilization Toward Polysulfides
文献类型：期刊论文
| 作者 | Liu, Jinyun1; Zhu, Liying1; Shen, Zihan3; Zhang, Min1; Han, Tianli1; Zhang, Huigang2,3 |
| 刊名 | ACS Applied Energy Materials
 |
| 出版日期 | 2021-10-25 |
| 卷号 | 4期号:10页码:10998-11003 |
| 关键词 | Hematite - Nanocrystals - Graphene - Shells (structures) - Density functional theory - Lithium compounds |
| DOI | 10.1021/acsaem.1c01943 |
| 英文摘要 | Emerging materials for high-performance Li-S batteries are of great significance. Here, we develop a unique doughnutlike graphene quantum dot (GQD)/Fe2O3@S@SnO2 composite for Li-S batteries. The GQDs are confined inside the yolk-shell structure, which could shorten the pathway for electron and ion transport, enhancing the utilization of sulfur and achieving an energy-storage performance. Both the Fe2O3 core and SnO2 shell display strong binding with Li2S4, Li2S6, and Li2S8, which is verified by using density functional theory calculations. The doughnutlike GQD/Fe2O3@S@SnO2-based Li-S battery displays a capacity of 923 mAh g-1 after cycling 100 times, an 鈮?00% Coulombic efficiency, and a recoverable rate performance after repeated measurements. The constructed battery possesses a good tolerance at a high temperature of 45 掳C. These findings would enable the doughnutlike yolk-shell design to be broadly applied for developing other emerging high-performance materials and their secondary batteries. 漏 2021 American Chemical Society. |
| 学科主题 | Semiconductor Quantum Dots |
| 项目编号 | This work was supported by the Science and Technology Major Project of Anhui Province (18030901093), Key Research and Development Program of Wuhu (2019YF07), University Synergy Innovation Program of Anhui Province (GXXT-2020-073), Anhui Laboratory of Molecule-Based Materials (FZJ21012), and the National Natural Science Foundation of China (21776121). |
| 出版者 | American Chemical Society |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/60339]  |
| 作者单位 | 1.Key Laboratory of Functional Molecular Solids of the Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Anhui, Wuhu; 241002, China 2.State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China 3.National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, Jiangsu, Nanjing; 210093, China |
| 推荐引用方式 GB/T 7714 | Liu, Jinyun,Zhu, Liying,Shen, Zihan,et al. Novel Doughnutlike Graphene Quantum Dot-Decorated Composites for High-Performance Li-S Batteries Displaying Dual Immobilization Toward Polysulfides[J]. ACS Applied Energy Materials,2021,4(10):10998-11003. |
| APA | Liu, Jinyun,Zhu, Liying,Shen, Zihan,Zhang, Min,Han, Tianli,&Zhang, Huigang.(2021).Novel Doughnutlike Graphene Quantum Dot-Decorated Composites for High-Performance Li-S Batteries Displaying Dual Immobilization Toward Polysulfides.ACS Applied Energy Materials,4(10),10998-11003. |
| MLA | Liu, Jinyun,et al."Novel Doughnutlike Graphene Quantum Dot-Decorated Composites for High-Performance Li-S Batteries Displaying Dual Immobilization Toward Polysulfides".ACS Applied Energy Materials 4.10(2021):10998-11003. |
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来源：过程工程研究所
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