Activated Carbon Modified by Titanate Coupling Agent for Supercapacitor

Abstract

A novel and simple strategy by introducing a titanate coupling agent into the electrode to improve the supercapacitor performance has been developed in this study. The surface modification of the activated carbon material are conducted under neutral conditions. The improved electrodes are characterized by mechanical tests and electrochemical measurements. The obtained results reveal that the treated activated carbon electrode retains good mechanical properties with decreased bonder content. The electrode prepared using activated carbon treated with the Titanate coupling agent and a bonder mass content of 8.0 % shows the best electrochemical performance. The specific capacitance reaches 376.2 F•g-1, whereas the internal resistance is 0.91 Ω.

Surface Treatment of Biochar: Methods, Surface Analysis and Potential Applications. A Comprehensive Review

“…For example, activated carbon was treated with titanate in order to design supercapacitors (specific capacitance: 376.2 F.g -1 , internal resistance: 0.91 Ω). 43 Although, not strictly on biochar, but of relevance to this review and the scope of the journal Surfaces, recently titanates were proposed for the covalent attachment of graphene oxide (Figure 6) in order to provide surface-bound alkyl groups that ensure dispersion of GO in hydraulic oils. 44 Interestingly, C1s spectra show drastic decrease of C-O component due to the covalent attachment of the long alkyl chains to the GO via titanium.…”

Surface Treatment of Biochar—Methods, Surface Analysis and Potential Applications: A Comprehensive Review

“…XPS analysis was used to probe titanate interaction with carbon allotropes, but only rare examples have been found. For example, activated carbon was treated with titanate in order to design supercapacitors (specific capacitance: 376.2 F.g −1 , internal resistance: 0.91 Ω) [63].…”