Optimized synthesis of Na2/3Ni1/3Mn2/3O2 as cathode for sodium-ion batteries by rapid microwave calcination

Autor(es)

Bomio, M. R. D. ; Lavela, P. ; Santiago, A. A. G. ; Motta, F. V. ; Tirado, J. L.

• Tipo de documento: Artigo Científico
• Fonte: CERAMICS INTERNATIONAL; v. 49, n. 8, p. 10-pg., 2023-03-07.

Resumo

Microwave calcination is proposed as an alternative route to conventional heating to prepare layered P2-Na2/ 3Ni1/3Mn2/3O2 as a positive electrode for sodium-ion batteries. The sample obtained by the fastest conditions, with a heating ramp of 20 degrees C min-1 for only 2 h, showed well-crystallized rounded particles. Cyclic voltammetry and impedance spectroscopy evidenced a low internal cell resistance, and high diffusion coefficients, which justify its capability to sustain the highest capacity at 1 C and retain the discharge capacity for at least two hundred cycles. (AU)

• Processo FAPESP: 08/57872-1 - Instituto Nacional de Ciências dos Materiais em Nanotecnologia
• Beneficiário: Elson Longo da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• 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