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Porous carbons are important electrode materials for supercapacitors. One of the challenges associated with supercapacitors is improving their energy density without relying on pseudocapacitance, which is based on fast redox reactions that often shorten device lifetimes. A possible solution involves achieving high total capacitance (Ctot), which comprises Helmholtz capacitance (CH) and possibly quantum...
Graphene Frameworks
In article number 2306325, Zheng‐Ze Pan, Devis Di Tommaso, Hirotomo Nishihara, and co‐workers tackle the surface inertness of SiO2 on graphene coating over chemical vapor deposition via the pre‐grafting of trimethyl silane (TMS) groups on the pristine SiO2 surface. TMS‐grafted SiO2 facilitates the graphene growth via the in‐situ formed Si radicals that catalyze CH4 dissociation...
Due to the manufacturability of highly well‐defined structures and wide‐range versatility in its microstructure, SiO2 is an attractive template for synthesizing graphene frameworks with the desired pore structure. However, its intrinsic inertness constrains the graphene formation via methane chemical vapor deposition. This work overcomes this challenge by successfully achieving uniform graphene coating...
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