Imperial College London


Faculty of EngineeringDepartment of Bioengineering

Reader in Polymer Bioelectronics



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BibTex format

author = {Cogan, SF and Garrett, DJ and Green, RA},
booktitle = {Neurobionics: The Biomedical Engineering of Neural Prostheses},
doi = {10.1002/9781118816028.ch3},
pages = {55--88},
title = {Electrochemical Principles of Safe Charge Injection},
url = {},
year = {2016}

RIS format (EndNote, RefMan)

AB - © 2016 John Wiley & Sons, Inc. All rights reserved. Summary: Proper selection of stimulation parameters, such as the pulse frequency, pulse width and the duty cycle, is important during charge injection for obtaining the desired functional response and ensuring that the stimulation is delivered without electrode corrosion or tissue damage. This chapter describes two categories of charge transfer at the electrode-tissue interface: capacitive charge transfer by double-layer charging, and Faradaic charge transfer in which species are oxidized or reduced. Lists of electrode materials suitable for chronic recording and stimulation are limited to platinum and its alloys with iridium, porous titanium nitride and, to a lesser extent, iridium oxide, and some stainless steels. The chapter then discusses the factors influencing electrode reversibility. Emerging electrode coatings based on intrinsically conducting polymers, carbon nanotubes (CNTs), doped ultra-nano-crystalline diamond and graphene are also discussed. Highlights of the properties of those more conventional electrode materials are finally presented.
AU - Cogan,SF
AU - Garrett,DJ
AU - Green,RA
DO - 10.1002/9781118816028.ch3
EP - 88
PY - 2016///
SN - 9781118816028
SP - 55
TI - Electrochemical Principles of Safe Charge Injection
T1 - Neurobionics: The Biomedical Engineering of Neural Prostheses
UR -
ER -