While holding the Faraday Chair of Electrochemistry he and Graham Hills established in the late 1960s the Electrochemistry Group of the University of Southampton.
Fleischmann produced over 272 scientific papers and book chapters on the field of electrochemistry. He contributed to the fundamental theory of:
* Potentiostat design
* Microelectrodes
* Electrochemical nucleation
* Surface-enhanced Raman spectroscopy
* In-situ X-ray techniques
* Organic electrochemistry
* Electrochemical engineering
* Biological electrodes
* Corrosion
The Martin Fleischmann Memorial Project was started in 2012 in his honour to gather together research from around the world connected to LENR, or Low Energy Nuclear Reactions