| Autor: |
Kong LL; Institute of New Energy Material Chemistry, School of Materials Science and Engineering, National Institute for Advanced Materials and ‡Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Nankai University , Tianjin 300350, China., Zhang Z; Institute of New Energy Material Chemistry, School of Materials Science and Engineering, National Institute for Advanced Materials and ‡Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Nankai University , Tianjin 300350, China., Zhang YZ; Institute of New Energy Material Chemistry, School of Materials Science and Engineering, National Institute for Advanced Materials and ‡Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Nankai University , Tianjin 300350, China., Liu S; Institute of New Energy Material Chemistry, School of Materials Science and Engineering, National Institute for Advanced Materials and ‡Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Nankai University , Tianjin 300350, China., Li GR; Institute of New Energy Material Chemistry, School of Materials Science and Engineering, National Institute for Advanced Materials and ‡Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Nankai University , Tianjin 300350, China., Gao XP; Institute of New Energy Material Chemistry, School of Materials Science and Engineering, National Institute for Advanced Materials and ‡Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Nankai University , Tianjin 300350, China. |
| Abstrakt: |
The lithium-sulfur (Li-S) battery is expected to be the high-energy battery system for the next generation. Nevertheless, the degradation of lithium anode in Li-S battery is the crucial obstacle for practical application. In this work, a porous carbon paper obtained from corn stalks via simple treating procedures is used as interlayer to stabilize the surface morphology of Li anode in the environment of Li-S battery. A smooth surface morphology of Li is obtained during cycling by introducing the porous carbon paper into Li-S battery. Meanwhile, the electrochemical performance of sulfur cathode is partially enhanced by alleviating the loss of soluble intermediates (polysulfides) into the electrolyte, as well as the side reaction of polysulfides with metallic lithium. The Li-S battery assembled with the interlayer exhibits a large capacity and excellent capacity retention. Therefore, the porous carbon paper as interlayer plays a bifunctional role in stabilizing the Li anode and enhancing the electrochemical performance of the sulfur cathode for constructing a stable Li-S battery. |
