Electrode-electrolyte interface properties in implantation conditions.
A research was made on electrical properties of implantable electrodes. Materials used for this research were platinum (Pt), stainless steel (SS), gold (Au) and silver-silver chloride (Ag/AgCl) that was used as a reference electrode material although it is not suitable for implantation, Wetzig et al. The interface impedance of the electrode-electrolyte-interface in three different electrolytes, saline (0.9 m-% NaCl), SBF (simulated body fluid) and PBS (phosphate buffered saline), was measured. A Randies equivalent circuit was used to model the electrode-electrolyte-interface. The two independent components of the electric equivalent circuit of the interface were quantified for all materials in all electrolytes. Impedance of the electrode-electrolyte interface was measured by a slightly modified technique presented originally by Lario-Garcia et al.
Riistama
J
J
Inst. of Meas. & Inf. Technol., Tampere Univ. of Technol., Tampere, Finland. jarno.riistama@tut.fi
Lekkala
J
J
D025802:Electric Capacitance; D004553:Electric Conductivity; D017097:Electric Impedance; D004563:Electrochemistry / Q000295:instrumentation* / Q000379:methods; D004566:Electrodes; D004573:Electrolytes / Q000737:chemistry*; D004867:Equipment Design; D006046:Gold / Q000737:chemistry; D010984:Platinum / Q000737:chemistry; D011199:Potentiometry; D012834:Silver / Q000737:chemistry; D018030:Silver Compounds / Q000737:chemistry; D012965:Sodium Chloride / Q000737:chemistry; D012984:Software; D013193:Stainless Steel / Q000737:chemistry
D004573:Electrolytes; D018030:Silver Compounds; D013193:Stainless Steel; D012834:Silver; D012965:Sodium Chloride; D010984:Platinum; D006046:Gold; C037548:silver chloride