TY - GEN
T1 - A biologically-inspired electro-chemical reference electrode
AU - Ren, Hao
AU - Torres, Cesar
AU - Zhang, Zhaofeng
AU - Chae, Junseok
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/2/23
Y1 - 2017/2/23
N2 - The paper report a unique biologically inspired electro-chemical reference electrode based on regulating the breathing of bacteria. Some species of bacteria, named exoelectrogen, have the capability of extracellular electron transfer, which is the transfer of electrons to a solid electron acceptor outside their membrane. We find that it sets the solid electron acceptor at a stable electrochemical potential, which can be used as reference electrode. We pattern thin film platinum as electron acceptor and grow exoelectrogenic biofilm on it. By performing colorimetric analysis of the individual ions in the anolyte solution, we confirmed that the potential of the reference electrode, ∼ -0.5 V versus the Ag/AgCl in 3M NaCl, arises from the electrochemical potential of the reaction. The biologically-inspired reference electrode demonstrates a stability of ±4.2 mV/day for two days. It is integrated in a MEMS microbial fuel cell (MFC) to characterize its electrochemical characteristics.
AB - The paper report a unique biologically inspired electro-chemical reference electrode based on regulating the breathing of bacteria. Some species of bacteria, named exoelectrogen, have the capability of extracellular electron transfer, which is the transfer of electrons to a solid electron acceptor outside their membrane. We find that it sets the solid electron acceptor at a stable electrochemical potential, which can be used as reference electrode. We pattern thin film platinum as electron acceptor and grow exoelectrogenic biofilm on it. By performing colorimetric analysis of the individual ions in the anolyte solution, we confirmed that the potential of the reference electrode, ∼ -0.5 V versus the Ag/AgCl in 3M NaCl, arises from the electrochemical potential of the reaction. The biologically-inspired reference electrode demonstrates a stability of ±4.2 mV/day for two days. It is integrated in a MEMS microbial fuel cell (MFC) to characterize its electrochemical characteristics.
UR - http://www.scopus.com/inward/record.url?scp=85015718920&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85015718920&partnerID=8YFLogxK
U2 - 10.1109/MEMSYS.2017.7863414
DO - 10.1109/MEMSYS.2017.7863414
M3 - Conference contribution
AN - SCOPUS:85015718920
T3 - Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
SP - 354
EP - 357
BT - 2017 IEEE 30th International Conference on Micro Electro Mechanical Systems, MEMS 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 30th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2017
Y2 - 22 January 2017 through 26 January 2017
ER -