Specific capacitance–pore texture relationship of biogas slurry mesoporous carbon/MnO2 composite electrodes for supercapacitors
| dc.contributor.author | Kibona, Talam Enock | |
| dc.contributor.author | Shao, Godlisten N. | |
| dc.contributor.author | Kim, Hee Taik | |
| dc.contributor.author | King’ondu, Cecil K. | |
| dc.date.accessioned | 2018-11-20T08:14:48Z | |
| dc.date.available | 2018-11-20T08:14:48Z | |
| dc.date.issued | 2019-02 | |
| dc.description.abstract | Here, we report synthesis of biogas slurry mesoporous carbon/MnO2 composites by simple co-precipitation route followed by thermal treatment at 250 °C for 6 h. The texture, morphology, crystal structure, and microstructure of the composites are investigated by nitrogen sorption studies, FESEM, HRTEM, X-ray diffraction, and Raman spectroscopy. All samples exhibit type IV isotherms. The BET surface area decreased from 514 to 110 m2 g−1 while total pore volume decreased from 0.52 to 0.17 cm3 g−1 for samples loaded with 2×10−5 and 2×10−3 moles of Mn. The electrodes fabricated exhibit high specific capacitance of 709 F g−1 at scan rate of 5 mV s−1. The specific capacitance at scan rate of 5 mV s−1 increases with increasing MnO2 content. However, at 50 mV s−1, specific capacitance decreases with increasing MnO2 content. Varying the MnO2 content and hence the textural parameters, strongly influences the specific capacitances of the composite electrodes. | en_US |
| dc.description.sponsorship | Tanzania Commission of Science and Technology (COSTECH) | en_US |
| dc.identifier.doi | https://doi.org/10.1016/j.nanoso.2018.10.002 | |
| dc.identifier.issn | 2352-507X | |
| dc.identifier.uri | http://hdl.handle.net/20.500.11810/4992 | |
| dc.language.iso | en | en_US |
| dc.publisher | Elsevier | en_US |
| dc.relation.ispartofseries | ;Nano-Structures & Nano-Objects 17 (2019) 21–33 | |
| dc.subject | Biogas slurry, Mesoporous carbon, Manganese oxide, Supercapacitors, Specific capacitance and composites | en_US |
| dc.title | Specific capacitance–pore texture relationship of biogas slurry mesoporous carbon/MnO2 composite electrodes for supercapacitors | en_US |
| dc.type | Journal Article, Peer Reviewed | en_US |