Search

Your search keyword '"Wu, Shide"' showing total 29 results
Start Over Author "Wu, Shide" Search Limiters Full Text
29 results on '"Wu, Shide"'

19. Fe3O4 hard templating to assemble highly wrinkled graphene sheets into hierarchical porous film for compact capacitive energy storage

Author

Fanteng Meng, Gao-yun Chen, Shichao Zhang, Zhang Yongxia, Lizhen Wang, Ji Yan, Linsen Zhang, Hua Fang, and Wu Shide

Subjects
Supercapacitor, Materials science, Graphene, Capillary action, General Chemical Engineering, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Capacitance, 0104 chemical sciences, law.invention, Sphere packing, Chemical engineering, law, Specific surface area, 0210 nano-technology, Porosity, Power density
Abstract

Highly wrinkled graphene film (HWGF) with high packing density was synthesized by combining an electrostatically self-assembling process, a vacuum filtration-induced film assembling process and capillary compression. Fe3O4 nanoparticles were used as a low-cost and environment-friendly hard template. Hierarchical porosity and high packing density were achieved with the aid of capillary compression in the presence of Fe3O4 nanoparticles. This strategy enables integration of highly wrinkled graphene sheets to form highly compact carbon electrodes with a continuous ion transport network. The generated HWGF exhibited a high packing density of 1.53 g cm−3, a high specific surface area of 383 m2 g−1 and a hierarchically porous structure. The HWGF delivered a high capacitance of 242 F g−1 and 370 F cm−3 at 0.2 A g−1 in 6 M KOH aqueous electrolyte system with excellent rate capability (202 F g−1 and 309 F cm−3 retained at 20 A g−1). The capacity retention rate reached 97% after 10 000 cycles at 1 A g−1. The HWGF-based supercapacitor exhibited a high energy density of 17 W h kg−1 at the power density of 49 W kg−1. Such high capacitive performances could be attributed to the highly dense but porous graphene assemblies composed of highly wrinkled graphene sheets.

Published
2019

21. Architectural Ni3Se2 nanosheet-on-nanoforests as free-standing electrodes for high-performance hybrid supercapacitors

Author

Yong Zhang, Fangshuai Chen, Fang Wang, Wu Shide, Hewei Luo, Guo Dongjie, Huaiyang Zheng, Shiwen Wang, Ji Yan, Heng Wang, and Hongge Gao

Subjects
Ni3Se2, 010302 applied physics, Supercapacitor, Free-standing, Materials science, Hybrid supercapacitor, Nanoforests, General Physics and Astronomy, Nanotechnology, 02 engineering and technology, 021001 nanoscience & nanotechnology, Microstructure, 01 natural sciences, lcsh:QC1-999, Cathode, law.invention, Energy storage and conversion, law, 0103 physical sciences, Electrode, 0210 nano-technology, lcsh:Physics, Nanosheet
Abstract

A unique electrode architecture consisting of Ni3Se2 nanosheet-on-Ni3Se2-nanoforests grown on nickel foam was obtained by a simple one-step solvothermal method, which subsequently used as a free-standing electrode for supercapacitor. The Ni3Se2 exhibited a high capacity of up to 600 μAh cm−2 at 3 mA cm−2, excellent rate capability and cycling stability at high cycling rates. Impressively, the optimized hybrid supercapacitor containing Ni3Se2 cathode still released 94.4% of initial capacity for 505 μAh cm−2 after 6000 cycles at 20 mA cm−2. The results suggest that the Ni3Se2 nanoforests developed electrode has great potential for practical applications in hybrid supercapacitors.

Published
2020

29. Fe 3 O 4 hard templating to assemble highly wrinkled graphene sheets into hierarchical porous film for compact capacitive energy storage.

Author

Fang H, Meng F, Yan J, Chen GY, Zhang L, Wu S, Zhang S, Wang L, and Zhang Y

Abstract

Highly wrinkled graphene film (HWGF) with high packing density was synthesized by combining an electrostatically self-assembling process, a vacuum filtration-induced film assembling process and capillary compression. Fe 3 O 4 nanoparticles were used as a low-cost and environment-friendly hard template. Hierarchical porosity and high packing density were achieved with the aid of capillary compression in the presence of Fe 3 O 4 nanoparticles. This strategy enables integration of highly wrinkled graphene sheets to form highly compact carbon electrodes with a continuous ion transport network. The generated HWGF exhibited a high packing density of 1.53 g cm -3 , a high specific surface area of 383 m 2 g -1 and a hierarchically porous structure. The HWGF delivered a high capacitance of 242 F g -1 and 370 F cm -3 at 0.2 A g -1 in 6 M KOH aqueous electrolyte system with excellent rate capability (202 F g -1 and 309 F cm -3 retained at 20 A g -1 ). The capacity retention rate reached 97% after 10 000 cycles at 1 A g -1 . The HWGF-based supercapacitor exhibited a high energy density of 17 W h kg -1 at the power density of 49 W kg -1 . Such high capacitive performances could be attributed to the highly dense but porous graphene assemblies composed of highly wrinkled graphene sheets., Competing Interests: There are no conflicts to declare., (This journal is © The Royal Society of Chemistry.)

Published
2019
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results