Larsson, Sylvia
- Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
Sammanfattning
Activated reduced graphene oxide (a-rGO) is a material with a rigid 3D porous structure and high specific surface area (SSA). Using variation of activation parameters and post-synthesis mechanical treatment we prepared two sets of materials with a broad range of BET (N-2) SSA similar to 1000-3000 m(2) g(-1), and significant differences in pore size distribution and oxygen content. The performance of activated graphene as an electrode in a supercapacitor with KOH electrolyte was correlated with the structural parameters of the materials and water sorption properties. a-rGO is a hydrophobic material as evidenced by the negligibly small BET (H2O) SSA determined using analysis of water vapor sorption isotherms. However, the total pore volume determined using water vapor sorption and sorption of liquid water is almost the same as the one found by analysis of nitrogen sorption isotherms. Ball milling is found to provide an improved bulk density of activated graphene and collapse of all pores except the smallest ones (
Publicerad i
Physical Chemistry Chemical Physics
2019, volym: 21, nummer: 32, sidor: 17901-17912
SLU författare
UKÄ forskningsämne
Bearbetnings-, yt- och fogningsteknik
Atom- och molekylfysik och optik
Polymerteknologi
Publikationens identifierare
- DOI: https://doi.org/10.1039/c9cp03327k
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/101284