A hydrothermal carbonization process for the preparation of activated carbons from hemp straw : an efficient electrode material for supercapacitor application
In the present study, a hemp straw activated carbon (HSAC) was simply prepared by hydrothermal process followed by a pre-oxidization and carbonization by KOH solid-state activation. The as-synthesized HSAC shows abundant porosity, which is designed to be beneficial to the fast transportation of elec...
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Institute for Ionics
2019
|
| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/25385/1/A%20hydrothermal%20carbonization%20process%20for%20the%20preparation%20.pdf |
| _version_ | 1796993456992681984 |
|---|---|
| author | Jiang, Xia Shi, Gaofeng Wang, Guoying Mishra, Puranjan Liu, Chao Dong, Yucan Zhang, Peng Tian, Haoqi Liu, Yanrong Wang, Zhao Zhang, Qi Zhang, Hongquan |
| author_facet | Jiang, Xia Shi, Gaofeng Wang, Guoying Mishra, Puranjan Liu, Chao Dong, Yucan Zhang, Peng Tian, Haoqi Liu, Yanrong Wang, Zhao Zhang, Qi Zhang, Hongquan |
| author_sort | Jiang, Xia |
| collection | UMP |
| description | In the present study, a hemp straw activated carbon (HSAC) was simply prepared by hydrothermal process followed by a pre-oxidization and carbonization by KOH solid-state activation. The as-synthesized HSAC shows abundant porosity, which is designed to be beneficial to the fast transportation of electrolyte. The preparation conditions for HSACs under different mass ratios of KOH:precursors were optimized, and the sample obtained by a mass ratio of 4:1 showed an outstanding capacitive property (specific capacitance of 279 F g−1at 0.5 A g−1 current density). Besides, the capacitance of 91.6% was retained after 5000 charge-discharge cycles under 2 A g−1 current density. The resulting symmetrical supercapacitor obtained by using the HSAC electrodes exhibited an excellent electrochemical performance, which successfully illuminated a LED light. The HSAC has great potentials as electrode material for high-performance supercapacitor, which opens a new way for value increment of natural products. |
| first_indexed | 2024-03-06T12:34:16Z |
| format | Article |
| id | UMPir25385 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T12:34:16Z |
| publishDate | 2019 |
| publisher | Institute for Ionics |
| record_format | dspace |
| spelling | UMPir253852019-10-25T03:51:16Z http://umpir.ump.edu.my/id/eprint/25385/ A hydrothermal carbonization process for the preparation of activated carbons from hemp straw : an efficient electrode material for supercapacitor application Jiang, Xia Shi, Gaofeng Wang, Guoying Mishra, Puranjan Liu, Chao Dong, Yucan Zhang, Peng Tian, Haoqi Liu, Yanrong Wang, Zhao Zhang, Qi Zhang, Hongquan QD Chemistry TP Chemical technology In the present study, a hemp straw activated carbon (HSAC) was simply prepared by hydrothermal process followed by a pre-oxidization and carbonization by KOH solid-state activation. The as-synthesized HSAC shows abundant porosity, which is designed to be beneficial to the fast transportation of electrolyte. The preparation conditions for HSACs under different mass ratios of KOH:precursors were optimized, and the sample obtained by a mass ratio of 4:1 showed an outstanding capacitive property (specific capacitance of 279 F g−1at 0.5 A g−1 current density). Besides, the capacitance of 91.6% was retained after 5000 charge-discharge cycles under 2 A g−1 current density. The resulting symmetrical supercapacitor obtained by using the HSAC electrodes exhibited an excellent electrochemical performance, which successfully illuminated a LED light. The HSAC has great potentials as electrode material for high-performance supercapacitor, which opens a new way for value increment of natural products. Institute for Ionics 2019-07-01 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/25385/1/A%20hydrothermal%20carbonization%20process%20for%20the%20preparation%20.pdf Jiang, Xia and Shi, Gaofeng and Wang, Guoying and Mishra, Puranjan and Liu, Chao and Dong, Yucan and Zhang, Peng and Tian, Haoqi and Liu, Yanrong and Wang, Zhao and Zhang, Qi and Zhang, Hongquan (2019) A hydrothermal carbonization process for the preparation of activated carbons from hemp straw : an efficient electrode material for supercapacitor application. Ionics, 25 (7). pp. 3299-3307. ISSN 0947-7047. (Published) https://doi.org/10.1007/s11581-019-02850-8 https://doi.org/10.1007/s11581-019-02850-8 |
| spellingShingle | QD Chemistry TP Chemical technology Jiang, Xia Shi, Gaofeng Wang, Guoying Mishra, Puranjan Liu, Chao Dong, Yucan Zhang, Peng Tian, Haoqi Liu, Yanrong Wang, Zhao Zhang, Qi Zhang, Hongquan A hydrothermal carbonization process for the preparation of activated carbons from hemp straw : an efficient electrode material for supercapacitor application |
| title | A hydrothermal carbonization process for the preparation of activated carbons from hemp straw : an efficient electrode material for supercapacitor application |
| title_full | A hydrothermal carbonization process for the preparation of activated carbons from hemp straw : an efficient electrode material for supercapacitor application |
| title_fullStr | A hydrothermal carbonization process for the preparation of activated carbons from hemp straw : an efficient electrode material for supercapacitor application |
| title_full_unstemmed | A hydrothermal carbonization process for the preparation of activated carbons from hemp straw : an efficient electrode material for supercapacitor application |
| title_short | A hydrothermal carbonization process for the preparation of activated carbons from hemp straw : an efficient electrode material for supercapacitor application |
| title_sort | hydrothermal carbonization process for the preparation of activated carbons from hemp straw an efficient electrode material for supercapacitor application |
| topic | QD Chemistry TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/25385/1/A%20hydrothermal%20carbonization%20process%20for%20the%20preparation%20.pdf |
| work_keys_str_mv | AT jiangxia ahydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT shigaofeng ahydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT wangguoying ahydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT mishrapuranjan ahydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT liuchao ahydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT dongyucan ahydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT zhangpeng ahydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT tianhaoqi ahydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT liuyanrong ahydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT wangzhao ahydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT zhangqi ahydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT zhanghongquan ahydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT jiangxia hydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT shigaofeng hydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT wangguoying hydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT mishrapuranjan hydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT liuchao hydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT dongyucan hydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT zhangpeng hydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT tianhaoqi hydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT liuyanrong hydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT wangzhao hydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT zhangqi hydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication AT zhanghongquan hydrothermalcarbonizationprocessforthepreparationofactivatedcarbonsfromhempstrawanefficientelectrodematerialforsupercapacitorapplication |