Open AccessNitrogen and oxygen co-doped broccoli-like porous carbon nanosheets derived from sericin for high-performance supercapacitors
Author(s) -
Xingyu Shi,
Wenjing Xue,
Wenjian Wang,
Ruirui Zhao,
Dongxu He
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/510/2/022027
Subject(s) - supercapacitor , heteroatom , capacitance , materials science , carbon fibers , chemical engineering , sericin , nitrogen , porosity , activated carbon , doping , capacitor , oxygen , composite material , chemistry , adsorption , electrode , organic chemistry , silk , ring (chemistry) , optoelectronics , electrical engineering , voltage , composite number , engineering
Broccoli-like porous carbon nanosheets with high levels of heteroatoms doping was successfully synthesized from the wasted sericin via an environmental friendliness and cost-effective strategy. The hierarchical porous carbon nanosheets was formed from chemical expansion and activation by Mg 2 (OH) 2 CO 3 ·xH 2 O simultaneously. Benefiting from the elaborate structure of NPCN-4, the prepared material shows the satisfactory energy storage ability in electrical double-layer capacitors (EDLCs) area with an outstanding specific capacitance of 214.5 F g −1 at 0.5 A g −1 in an alkaline solution and high capacitance retention of 87% at 10 A g −1 after 10000 cycles.