Solution-based Preparation of High Sulfur Content Sulfur/Graphene Cathode Material for Li-S Battery
| Autor: | Quanjun Tang, Guowei Ling, Wuxing Hua, Quan-Hong Yang, Chuannan Geng, Donghai Liu, Chen Zhang |
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| Rok vydání: | 2021 |
| Předmět: |
Battery (electricity)
Fabrication Materials science Graphene chemistry.chemical_element 02 engineering and technology General Chemistry Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Sulfur Cathode 0104 chemical sciences law.invention chemistry Chemical engineering law 0210 nano-technology Carbon Mass fraction |
| Zdroj: | Chemical Research in Chinese Universities. 37:323-327 |
| ISSN: | 2210-3171 1005-9040 |
| DOI: | 10.1007/s40242-021-0036-7 |
| Popis: | Practical Li-sulfur batteries require the high sulfur loading cathode to meet the large-capacity power demand of electrical equipment. However, the sulfur content in cathode materials is usually unsatisfactory due to the excessive use of carbon for improving the conductivity. Traditional cathode fabrication strategies can hardly realize both high sulfur content and homogeneous sulfur distribution without aggregation. Herein, we designed a cathode material with ultrahigh sulfur content of 88%(mass fraction) by uniformly distributing the water dispersible sulfur nanoparticles on three-dimensionally conductive graphene framework. The water processable fabrication can maximize the homogeneous contact between sulfur nanoparticles and graphene, improving the utilization of the interconnected conductive surface. The obtained cathode material showed a capacity of 500 mA·h/g after 500 cycles at 2.0 A/g with an areal loading of 2 mg/cm2. This strategy provides possibility for the mass production of high-performance electrode materials for high-capacity Li-S battery. |
| Databáze: | OpenAIRE |
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