title: Biomass-Derived Porous Carbon with Micropores and Small Mesopores for High-Performance Lithium-Sulfur Batteries.
abstract: Biomass-derived porous carbon BPC-700, incorporating micropores and small mesopores, was prepared through pyrolysis of banana peel followed by activation with KOH. A high specific BET surface area (2741 m2g-1), large specific pore volume (1.23 cm3g-1), and well-controlled pore size distribution (0.6-5.0 nm) were obtained and up to 65 wt % sulfur content could be loaded into the pores of the BPC-700 sample. When the resultant C/S composite, BPC-700-S65, was used as the cathode of a Li-S battery, a large initial discharge capacity (ca. 1200 mAh g-1) was obtained, indicating a good sulfur utilization rate. An excellent discharge capacity (590 mAh g-1) was also achieved for BPC-700-S65 at the high current rate of 4 C (12.72 mA cm-2), showing its extremely high rate capability. A reversible capacity of about 570 mAh g-1was achieved for BPC-700-S65 after 500 cycles at 1 C (3.18 mA cm-2), indicating an outstanding cycling stability.
authors.affiliation: Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China.
authors.forename: Kai
authors.initials: K
authors.lastname: Yang
authors.affiliation: Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China. qmgao@buaa.edu.cn.
authors.forename: Qiuming
authors.initials: Q
authors.lastname: Gao
authors.affiliation: Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China.
authors.forename: Yanli
authors.initials: Y
authors.lastname: Tan
authors.affiliation: Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China.
authors.forename: Weiqian
authors.initials: W
authors.lastname: Tian
authors.affiliation: Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China.
authors.forename: Weiwei
authors.initials: W
authors.lastname: Qian
authors.affiliation: Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China.
authors.forename: Lihua
authors.initials: L
authors.lastname: Zhu
authors.affiliation: Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China.
authors.forename: Chunxiao
authors.initials: C
authors.lastname: Yang
keywords: batteries; biomass; carbon; lithium; sulfur