| 학회 |
한국화학공학회 |
| 학술대회 |
2022년 봄 (04/20 ~ 04/23, 제주국제컨벤션센터) |
| 권호 |
28권 1호, p.1427 |
| 발표분야 |
[주제 12] 화학공학일반(부문위원회 발표) |
| 제목 |
Improving Lithium-Sulfur Battery Performances by Using N-containing Porous Aromatic Framework 41 as the Sulfur Support |
| 초록 |
N-containing porous aromatic framework 41 (PAF-41) with hierarchical porous structure has been readily synthesized through Scholl reaction by using triphenylamine as the monomer. The extended skeleton of PAF-41 is constructed by N-bridged biphenyl groups to generate a consecutive conjugative electronic structure. The hierarchical porous skeleton and the presence of N atoms effectively confine the electroactive species by synergistic physisorption and chemisorption to alleviate the shuttle effect that is induced by the soluble polysulfides. These features render the sulfur impregnated PAF-41 (SPAF-41) improved lithium sulfur battery performances, especially the cycling stability. SPAF-41 composite cathode with high sulfur loading of 72 wt% exhibits enhanced rate capability and excellent cycling performance. The cell delivers a high capacity of 725.8 mAh g−1 at 0.5 C in the first cycle and sustains a reversible capacity of 491.4 mAh g−1 after 500 charge-discharge cycles. A low decay rate 0.06% per cycle is achieved. The well conductive PAF-41 support bestows the cell high Coulombic efficiency of 97.36%. |
| 저자 |
Wang Qian1, 김지만2
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| 소속 |
1성균관대, 2Sungkyunkwan Univ. |
| 키워드 |
촉매(Catalyst) |
| E-Mail |
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| 원문파일 |
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