Welcome to the Electrochemistry Laboratory (LEC)
The Electrochemistry Laboratory (LEC), established 1988, is part of the General Energy Research Department (ENE) at the Paul Scherrer Institute.
The laboratory comprises two sections and 4 interacting groups that deal with almost all aspects of electrochemical energy storage and conversion.
PSIs Electrochemistry Laboratory is Switzerlands largest Center for Electrochemical Research.
LEC on TV
Aus Einstein vom 21.11.2013, 21:07 Uhr
Mobilität ohne Treibhausgase
Wasserstofftankstellen für die Schweiz?
PSI Electrochemistry Symposium
30th PSI Electrochemistry Symposium
Topic: Oxygen: Airborne Energy Conversion and Storage
May 07, 2014
Paul Scherrer Institut, Villigen PSI
more info..., Program, Poster Contributions, Registration, etc.
Ice in fuel cells imaged directly for the first time
June 16, 2014
Fuel cell know-how from the Paul Scherrer Institute at the core of the SBB minibar
April 4, 2014
The Paul Scherrer Institute runs two of the energy competence centres (SCCERs) of the Swiss government
December 12, 2013
Fuel cell membrane from the Paul Scherrer Institute better than its commercial counterparts
November 28, 2013
Zukünftige Computerchips mit "elektronischem Blutkreislauf"
November 14, 2013
Five times less platinum: fuel cells could become economically more attractive thanks to novel aerogel catalyst.
August 08, 2013
An ultrathin energy storage device made of carbon
April 26, 2013
Memory effect now also found in lithium-ion batteries
April 14, 2013
Annual Report 2013
View in Issuu.com
Dosing Differential Electrochemical Mass Spectrometry (D-DEMS) for Li-O2 Batteries
The high-energy rechargeable Li-O2
battery has been subject to intensive research worldwide during the past years. The Li-O2
cell mainly comprises a negative (e.g. Li metal) and positive (e.g. porous carbon) electrode separated by an electronically insulating, but Li+ conducting electrolyte layer. In order to study the cell chemistry, a differential electrochemical mass spectrometry setup based on a set of valves, a pressure sensor and a quadrupole mass spectrometer has been developed. On galvanostatic discharge, oxygen dissolves in the non-aqueous electrolyte, reduces at the porous carbon surface to form mainly Li2
, as determined from the linear decrease in the oxygen pressure corresponding to a ratio of 2e- per O2
consumed. On charge, the discharge product is oxidized, the lithium ions return to the negative electrode and oxygen gas evolves. Although the oxygen evolution rate initially reaches 2e-/O2
, it rapidly drops as the cell over-potential increases. In addition, the evolution of CO2
at 4.3 V vs Li+/Li clearly demonstrates the existence of parasitic side reactions. The D-DEMS, as successfully developed at PSI, is a key tool for analyzing the O2
gas usage, without which conclusions on the cell rechargeability can hardly be drawn.
Nickel foam covered by Sb particles used for negative electrode in Li-ion batteries.
Paul Scherrer Institut
Prof. Dr. Th. J. Schmidt
+41 56 310 57 65
+41 56 310 29 19
The Electrochemistry Laboratory holds a seminar typically once a week during the semester on Wednesdays at 4.00pm in ODRA/111
July 16 - August 13 no Seminars
General Energy Research Department at PSI
The Scientific Reports – containing accounts of research topics from all the different areas – provide an impression of the variety of subjects researched at PSI.
current opening at General Energy Research Dept.