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Correlaciones estructurales en la transferencia heterogénea de electrones en los electrodos de grafeno monocapa y
Aleix G Güell1, Neil Ebejer, Michael E Snowden
1Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom.
Journal of the American Chemical Society
|April 11, 2012
Resumen
El grafeno es el grafeno.
Área de la Ciencia:
- Ciencia de los materiales Ciencia de los materiales.
- La electroquímica es electroquímica.
- Ciencias de la superficie Ciencias de la superficie.
Sus antecedentes:
- El grafeno, un nuevo alotrópico del carbono, es prometedor como material de electrodo.
- Comprender sus propiedades electroquímicas es crucial para las aplicaciones.
Objetivo del estudio:
- Investigar la actividad heterogénea de transferencia de electrones (ET) en las superficies de grafeno.
- Correlacione las tasas de ET con la estructura y las propiedades del grafeno en alta resolución.
Principales métodos:
- Microscopía celular electroquímica de barrido utilizado (SECCM).
- Corrientes electroquímicas mapeadas con alta resolución espacial.
- Se analizaron la estructura y las propiedades de la superficie del grafeno.
Principales resultados:
- La tasa de ET heterogénea aumenta con el número de capas de grafeno.
- El apilamiento multicapa de grafeno influye sutilmente en la cinética ET.
- El mapeo de alta resolución reveló las relaciones estructura-actividad.
Conclusiones:
- La actividad ET del grafeno es dependiente de las capas.
- El apilamiento multicapa afecta la cinética de la transferencia de electrones.
- SECCM es eficaz para caracterizar el comportamiento electroquímico del grafeno.
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