期刊
MATERIALS
卷 15, 期 19, 页码 -出版社
MDPI
DOI: 10.3390/ma15196709
关键词
chemical bonding interface; mass transfer efficiency; electrode material
类别
资金
- National Natural Science Foundation of China [51425302]
- Shanxi Province Science Foundation for Youths [201701D221067]
- Doctoral Foundation of Taiyuan University of Science and Technology [20162016]
- Talents Introduction Plan of Hebei Agricultural University [YJ201819]
A three-step approach has been developed to create a multi-layered porous PBC/graphene sandwich with enhanced chemical bonding interactions. The chemically induced compatible interface significantly improves mass transfer efficiency when used as electrode material in supercapacitors and lithium-sulfur batteries.
Herein, a three-step approach toward a multi-layered porous PBC/graphene sandwich has been developed, in which the chemical bonding interactions have been successfully enhanced via esterification between the layers of pyrolyzed bacterial cellulose (PBC) and graphene. Such a chemically induced compatible interface has been demonstrated to contribute significantly to the mass transfer efficiency when the PBC/graphene sandwich is deployed as electrode material for both supercapacitors and lithium-sulfur batteries. The high specific capacitance of the supercapacitors has been increased by three times, to 393 F g(-1) at 0.1 A g(-1). A high initial discharge specific capacity (similar to 1100 mAhg(-1)) and high coulombic efficiency (99% after 300 cycles) of the rPG/S-based lithium-sulfur batteries have been achieved.
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