Enzymatic biofuel cells based on protective hydrophobic carbon paste electrodes: towards epidermal bioenergy harvesting in the acidic sweat environment

Autor(es)

Sempionatto, Juliane R. ^[1] ; Raymundo-Pereira, Paulo A. ^{[2, 1]} ; Azeredo, Nathalia F. B. ^{[3, 1]} ; De Loyola e Silva, Andre N. ^[1] ; Angnes, Lucio ^[3] ; Wang, Joseph ^[1]

Afiliação do(s) autor(es)

^[1] Univ Calif San Diego, Dept NanoEngn, San Diego, CA 92103 - USA

^[2] Univ Sao Paulo, Sao Carlos Inst Phys, Sao Carlos - Brazil

^[3] Univ Sao Paulo, Dept Fundamental Chem, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CHEMICAL COMMUNICATIONS; v. 56, n. 13, p. 2004-2007, FEB 14 2020.
• Citações Web of Science: 0

Resumo

The operation of wearable epidermal biofuel cells is prone to rapid irreversible deactivation effects under dynamic sweat pH changes from neutral to acidic. We demonstrate that the encapsulation of lactate-oxidase (LOx) within a hydrophobic protective carbon-paste anode imparts unusually high stability during dynamically changing pH fluctuations and allows the BFC to continue harvesting the lactate bioenergy even after long exposures to acidic conditions. The unique power-recovery ability of the carbon-paste BFC after its failure in harsh pH is attributed to the protective action of the non-polar paste environment. (AU)

• Processo FAPESP: 17/26666-6 - Sensores flexíveis para detecção de biomarcadores com procedimentos não invasivos
• Beneficiário: Paulo Augusto Raymundo Pereira
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado