MOF−derived binder-free carbon–metal oxides composite electrodes for electrochemical devices

Carbon-metal oxide composite materials have been widely used in electrochemical devices, such as supercapacitors, sensors, lithium-ion batteries and fuel cells. Despite the significant advances in preparing carbon-metal oxide... [ view full abstract ]

Carbon-metal oxide composite materials have been widely used in electrochemical devices, such as supercapacitors, sensors, lithium-ion batteries and fuel cells. Despite the significant advances in preparing carbon-metal oxide composite electrodes, methods for seamless interconnecting of these two materials are still scarce. In this work,we introduce a novel method for the in situ synthesis of porous carbon–metal oxide composite porous electrodes. Firstly, metal-organic frameworks (MOFs) are deposited directly on porous substrates by anodic electrodeposition. Subsequent pyrolysis and activation lead to the formation of carbon–metal oxides composite electrodes. Several MOF derived electrodes have been prepared successfully via the same procedure, demonstrating the versatility of the proposed method. The resulting electrodes based on different MOFs show promising performance as supercapacitors and glucose sensors, respectively.