| Texto completo | |
| Autor(es): |
de Oliveira Cremonezzi, Josue Marciano
[1, 2]
;
Tiba, Daniel Yaezu
[1, 2]
;
Domingues, Sergio Humberto
[1, 2]
Número total de Autores: 3
|
| Afiliação do(s) autor(es): | [1] Univ Prebiteriana Mackenzie, MackGraphe Graphene & Nanomat Res Ctr, Rua Consolacao 896, BR-01302907 Sao Paulo, SP - Brazil
[2] Univ Prebiteriana Mackenzie, Mackenzie Sch Engn, Sao Paulo, SP - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | SN APPLIED SCIENCES; v. 2, n. 10 SEP 12 2020. |
| Citações Web of Science: | 0 |
| Resumo | |
We report a very simple and fast route for a high capacitive birnessite type manganese dioxide (delta-MnO2) synthesis, fully suitable to be applied as electrode in redox-based electrochemical supercapacitors. The material was obtained from a very efficient chemical reduction of potassium permanganate by nascent hydrogen in low temperature acid media. delta-MnO2 was extensively characterized by several techniques confirming the obtainment through the proposed route. The supercapacitive properties of the novel structure were evaluated showing a specific capacitance of 190 F g(-1) at 0.25 A.g(-1). In addition, to the best of our knowledge, this is the first report regarding the chemical synthesis of delta-MnO2 with no dependence of hazardous reducing agent, high temperature or high pressure commonly used to metal oxides production. (AU) | |
| Processo FAPESP: | 12/50259-8 - Grafeno: fotônica e opto-eletrônica: colaboração UPM-NUS |
| Beneficiário: | Antonio Helio de Castro Neto |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa SPEC |
| Processo FAPESP: | 17/21988-5 - Nanocompósitos baseados em derivados de grafeno, óxidos metálicos bidimensionais e polímeros conjugados para aplicação em dispositivos flexíveis de armazenamento de energia |
| Beneficiário: | Sergio Humberto Domingues |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |