Poster

FZJ-2014-05038

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Development of Corrosion Protection Layers for Current Collectors in Dual-Ion Batteries

Teucher, G. (Corresponding Author)FZJ* ; Van Gestel, T.FZJ* ; Uhlenbruck, S.FZJ* ; Eichel, R.-A.FZJ* ; Guillon, O.FZJ* ; Meister, P. ; Winter, M.

2014

Please use a persistent id in citations: http://hdl.handle.net/2128/7995

Abstract: In novel dual-ion cells graphite intercalation compounds will be used for both electrodes. The consequent intercalation of both, cations and anions, in the respective electrodes enables voltage values above 5 V. Established liquid electrolytes do not resist these conditions. Therefore those are replaced by ionic liquids having a good electrochemical performance also at higher temperatures. Now the challenge is to overcome the corrosion of the aluminium current collector triggered by fluorinated anions like bis(trifluoromethylsulfonyl)imide (TFSI). Our approach to protect the metal against corrosion is the deposition of an only electronically conductive, defect free and mechanically as well as electrochemically stable layer. Different material compositions in the range of oxidic ceramics are tested, first of all doped semiconductors, e. g. alumina doped zinc oxide. The preparation is based on a sol-gel route combined with several wet-chemical coating methods, because these are easily adjustable to different substrate sizes. Cyclic voltammetry is used to investigate the electrochemical performance of the protection layers on aluminium substrates.

---

Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)
2. Grundlagen der Elektrochemie (IEK-9)

Research Program(s):

1. 435 - Energy Storage (POF2-435) (POF2-435)
2. HITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406) (HITEC-20170406)

Appears in the scientific report 2014

---

Database coverage:

---