Cassava- and bamboo-derived carbons with higher degree of graphitization for energy storage

Autor(es)

Bin Mujib, Shakir ^[1] ; Vessalli, Beatriz ^[2] ; Bizzo, Waldir A. ^[3] ; Mazon, Talita ^[2] ; Singh, Gurpreet ^[1]

Afiliação do(s) autor(es)

^[1] Kansas State Univ, Dept Mech & Nucl Engn, Manhattan, KS 66506 - USA

^[2] Ctr Tecnol Informacao Renato Archer, Campinas, SP - Brazil

^[3] Univ Estadual Campinas, Sch Mech Engn, Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: NANOMATERIALS AND ENERGY; v. 9, n. 1, p. 54-65, JUN 2020.
• Citações Web of Science: 0

Resumo

Biomass-derived carbons are among the most promising candidates for large-scale electrochemical-energy-storage devices owing to their low cost, sustainability and widespread resources. Herein, the authors report a simplistic synthesis process for preparing two types of biomass carbons derived from cassava stalks and bamboo consisting of direct pyrolysis of the ground samples at 750 degrees C for 4 h. The electrochemical performances of the prepared biomass carbons are investigated in supercapacitors and lithium-ion battery (LIB) systems. Both the cassava and bamboo samples possess a high graphitization degree and good surface wettability as demonstrated by X-ray diffraction, Raman spectroscopy and Fourier transform infrared spectroscopy. As a supercapacitor electrode, cassava-derived carbons show the best performance with a maximum specific capacitance of 212 F/g and capacity retention of 95% after 2000 cycles. Moreover, as an electrode material for LIBs, cassava-derived carbons demonstrate the highest charge capacity of 357 mAh/g (at 100 mA/g), which stabilizes at 254 mAh/g. This approach shows great potential to achieve advanced electrode materials from low-cost, green and industrial-grade production of biomass-derived carbon materials by simple synthesis for advanced energy-storage applications in the future compared with conventional approaches. (AU)

• Processo FAPESP: 18/04487-5 - Biosensors 2018 - 28th Anniversary World Congress on Biosensors
• Beneficiário: Talita Mazon
• Modalidade de apoio: Auxílio à Pesquisa - Reunião - Exterior
• Processo FAPESP: 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais
• Beneficiário: Elson Longo da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs