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In order to improve the efficiency and obtain high output power with pure mode, 3-D particle-in-cell simulations are made on a novel coaxial triode vircator. Simulation results show that due to the appearance of the additional cylindrical cathode rod along the centerline, pure TM01 mode can be obtained in the output region. Simulation results also show that high-efficiency and pure TM01 mode output...
Power generation in microbial fuel cell (MFC) at different cathode electrode surface area was examined in two-chambered system with sodium acetate as carbon sources. When the anode surface area of 66 cm2 was used, the maximum power density increased by 44% when the cathode surface areas were increased from 66 cm2 to 336 cm2 and decreased by 21% when the cathode surface area was reduced to 14 cm2,...
In order to increase the power output and reduce the cost of MFCs, micro filtration membrane (MFM) air-cathode MFC (MFM-MFC) and proton exchange membrane (PEM) air-cathode MFC (PEM-MFC) were compared in the performance of the simultaneous decolorization of azo dye and power generation. Batch test results showed that the PEM-MFC produced a maximum power density of 272 mW/m2. The using the MFM in stead...
A cheap and locally available wood charcoal was used as the main electrode component of an air cathode MFC. The air cathode was build with fine charcoal powder and cement plaster as binder; while anode is a packed bed of charcoal granules. Mangrove estuary brackish water was inoculated in the anodic chamber as the fuel and source of exoelectrogens. The constructed fuel cell was monitored by measuring...
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