TY - JOUR
T1 - A high-efficiency DC-DC boost converter for a miniaturized microbial fuel cell
AU - Zhang, Xu
AU - Ren, Hao
AU - Pyo, Soonjae
AU - Lee, Jae Ik
AU - Kim, Jongbaeg
AU - Chae, Junseok
PY - 2015/4/1
Y1 - 2015/4/1
N2 - This paper presents a high-efficiency dc-dc boost converter to interface a miniaturized 50 μL microbial fuel cell (MFC) having 1 cm2 vertically aligned carbon nanotube anode and 1 cm2Cr/Au cathode. Geobacteraceae-enriched mixed bacterial culture in growth medium and 100 mM buffered ferricyanide solutions are used as the anolyte and catholyte, respectively. The miniaturized MFC produces up to approximately 10 μW with an output voltage of 0.4-0.7 V. Such low voltage, which is also load dependent, prevents the MFC to directly drive low power electronics. A pulse-frequency modulation type dc-dc converter in discontinuous conduction mode is designed and implemented to address the challenges and provides a load independent output voltage with high conversion efficiency. The fabricated dc-dc converter in UMC 0.18 μm has been tested with the MFC. At 0.9 V output, the converter has a peak efficiency of 85% with 9 μW load.
AB - This paper presents a high-efficiency dc-dc boost converter to interface a miniaturized 50 μL microbial fuel cell (MFC) having 1 cm2 vertically aligned carbon nanotube anode and 1 cm2Cr/Au cathode. Geobacteraceae-enriched mixed bacterial culture in growth medium and 100 mM buffered ferricyanide solutions are used as the anolyte and catholyte, respectively. The miniaturized MFC produces up to approximately 10 μW with an output voltage of 0.4-0.7 V. Such low voltage, which is also load dependent, prevents the MFC to directly drive low power electronics. A pulse-frequency modulation type dc-dc converter in discontinuous conduction mode is designed and implemented to address the challenges and provides a load independent output voltage with high conversion efficiency. The fabricated dc-dc converter in UMC 0.18 μm has been tested with the MFC. At 0.9 V output, the converter has a peak efficiency of 85% with 9 μW load.
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U2 - 10.1109/TPEL.2014.2323075
DO - 10.1109/TPEL.2014.2323075
M3 - Article
AN - SCOPUS:84909592620
VL - 30
SP - 2041
EP - 2049
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
SN - 0885-8993
IS - 4
M1 - 6814297
ER -