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Studies on Electrical Double Layer Capacitor Based on Mesoporous Activated Carbon
Meigen, Deng,Yihong, Feng,Bangchao, Yang Korean Carbon Society 2005 Carbon Letters Vol.6 No.2
Mesoporous activated carbon (AC) was prepared from aged petroleum coke through chemical activation. The AC has a specific surface area of 1733 $m^2/g$ and a mean pore diameter of 2.37 nm. The volume fraction of 2 to 4nm pores is 56.74%. At a current density of 10 mA/$cm^2$, a specific capacitance of 240 F/g is achieved representing the use factor of the surface area of 69.2%. And the electrical double layer capacitor (EDLC) based on the AC shows an excellent power performance. This result suggests that the presence of high fraction of mesopores can effectively increase the adsorption efficiency of the specific surface area of the AC and enhance the power performance of EDLC based on the efficient surface area of the AC.
Studies on Electrical Double Layer Capacitor Based on Mesoporous Activated Carbon
Deng Meigen,Feng Yihong,Yang Bangchao 한국탄소학회 2005 Carbon Letters Vol.6 No.2
Mesoporous activated carbon (AC) was prepared from aged petroleum coke through chemical activation. The AC has a specific surface area of 1733 m2/g and a mean pore diameter of 2.37 nm. The volume fraction of 2 to 4nm pores is 56.74%. At a current density of 10 mA/cm2, a specific capacitance of 240 F/g is achieved representing the use factor of the surface area of 69.2%. And the electrical double layer capacitor (EDLC) based on the AC shows an excellent power performance. This result suggests that the presence of high fraction of mesopores can effectively increase the adsorption efficiency of the specific surface area of the AC and enhance the power performance of EDLC based on the efficient surface area of the AC.
Simin Li,Yuanfang Luo,Chen Yongjun,Tiwen Xu,Bangchao Zhong,Zhixin Jia,Demin Jia 한국섬유공학회 2019 Fibers and polymers Vol.20 No.8
To simultaneously improve processing performances of rubber composites and avoid additive-blooming problem,the concept of “supported rubber additives” was introduced and reactive processing additive oleic acid (OA) was chemicallyimmobilized onto the surface of silica to obtain silica-supported processing additive (SiO2-s-OA). In this study, SiO2-s-OAwas uniformly dispersed into styrene-butadiene rubber (SBR) and gained improved interfacial interaction with rubber matrixdue to its good compatibility and the reaction during vulcanization. Consequently, SBR compounds with SiO2-s-OApossessed lower vulcanizing torque and viscosity under high shear frequency, showing improved processing performance. Moreover, the tensile modulus and strength of SBR/SiO2-s-OA could be enhanced by as much as 88.40 % and 11.44 %compared to SBR/SiO2, respectively, which is also higher than SBR/m-SiO2. Taken together, these results indicate that thismethod for the surface treatment of silica to prepare supported rubber additives may be extended for other nanofillers andrubber additives, which has better processing performance and improved mechanical property simultaneously.