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Welcome to the Electrochemistry Laboratory (LEC)

The Electrochemistry Laboratory (LEC), established 1988, is part of the Energy and Environment Research Division (ENE) at the Paul Scherrer Institute. The laboratory comprises two sections and 5 interacting groups that deal with almost all aspects of electrochemical energy storage and conversion.
PSI’s Electrochemistry Laboratory is Switzerland’s largest Center for Electrochemical Research.

LEC on TV and Radio

Swiss Radio: SRF Regionaljournal Aargau Solothurn, May 8, 2017, 17:30h
Paul Scherrer Institut entwickelt Akku der Zukunft
Swiss TV: Kassensturz, January 17, 2017, 21:10h
Knopfbatterien im Test: Enorme Preisunterschiede
Swiss TV: Einstein, November 26, 2015, 21:07h
Die Renaissance der Batterie
Swiss TV: Einstein, November 21, 2013, 21:07h
Mobilität ohne Treibhausgase
Wasserstofftankstellen für die Schweiz?

PSI Electrochemistry Symposium

34th PSI Electrochemistry Symposium
Topic: How to Push the Resolution Limits of Characterization in Electrochemistry?
April 25, 2018
Paul Scherrer Institut, Villigen PSI
Program and registration details will be announced in January 2018

See more about our past Symposia:
33rd PSI Electrochemistry Symposium
Topic: From the Lab to the Market
May 10, 2017
Paul Scherrer Institut, Villigen PSI
view our past program 2017 ...

32nd PSI Electrochemistry Symposium
Topic: Electrolytes - The Underestimated Player in Electrochemical Processes
April 27, 2016
Paul Scherrer Institut, Villigen PSI
view our past program 2016 ...

31st PSI Electrochemistry Symposium
Topic: Electrochemical Energy Storage: A Key for Future Energy Systems
May 06, 2015
Paul Scherrer Institut, Villigen PSI
view our past program 2015 ...

News

Quarzpulver für den Akku der Zukunft

https://www.psi.ch/media/quarzpulver-fuer-den-akku-der-zukunft May 8, 2017

Wasserkanäle machen Brennstoffzellen effizienter

https://www.psi.ch/media/wasserkanaele-machen-brennstoffzellen-effizienter September 23, 2015

The key to charging a lithium-ion battery rapidly

http://www.psi.ch/media/the-key-to-charging-a-lithium-ion-battery-rapidly September 08, 2015

Das Kompetenzzentrum Speicherung zieht nach einem Jahr Bilanz

Media Release November 14, 2014

Ice in fuel cells imaged directly for the first time

Media Release June 16, 2014

Fuel cell know-how from the Paul Scherrer Institute at the core of the SBB minibar

Media Release April 4, 2014

The Paul Scherrer Institute runs two of the energy competence centres (SCCERs) of the Swiss government

Media Release December 12, 2013

Fuel cell membrane from the Paul Scherrer Institute better than its commercial counterparts

Media Release November 28, 2013

Zukünftige Computerchips mit "elektronischem Blutkreislauf"

Media Release November 14, 2013

Five times less platinum: fuel cells could become economically more attractive thanks to novel aerogel catalyst.

Media Release August 08, 2013

An ultrathin energy storage device made of carbon

Media Release April 26, 2013

Memory effect now also found in lithium-ion batteries

Media Release April 14, 2013

Annual Report

Annual Report 2016

View in Issuu.com
Download

Scientific Highlight

June, 2013

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 Li2O2, 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.


Presentation slides
Publication: ECL Annual Report 2012

Further publications: Lithium batteries - Phase Boundaries

Header Picture:

Elemental mapping of the surface of a proton conducting fuel cell membrane prepared by swift heavy ion beam irradiation and grafting. Green areas (sulfur) indicate ion conducting domains (diameter around 1 micron), black areas (fluorine) the insulating matrix.