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1. (WO2018099955) SECONDARY CELL, ACCUMULATOR COMPRISING ONE OR MORE SECONDARY CELLS, AND METHOD FOR CHARGING AND DISCHARGING

Pub. No.:    WO/2018/099955    International Application No.:    PCT/EP2017/080791
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Thu Nov 30 00:59:59 CET 2017
IPC: H01M 4/86
H01M 12/08
H01M 4/34
H01M 4/38
H01M 4/54
B01J 23/38
H01M 4/88
H01M 4/90
Applicants: DEUTSCHES ZENTRUM FÜR LUFT- UND RAUMFAHRT E.V.
CIDETEC
Inventors: WITTMAIER, Dennis
WAGNER, Norbert
KUBE, Alexander
BLÁZQUEZ, Alberto
RAMOS, Aroa
Title: SECONDARY CELL, ACCUMULATOR COMPRISING ONE OR MORE SECONDARY CELLS, AND METHOD FOR CHARGING AND DISCHARGING
Abstract:
The invention relates to a secondary cell in the form of a hybrid system formed by a zinc-air battery and a silver oxide-zinc battery, comprising an anode, a cathode and an electrolyte. The anode contains zinc (Zn) and/or zinc oxide (ZnO), and the cathode is formed as a gas diffusion electrode containing a mixture (24) formed by silver (Ag) and/or silver oxide (Ag2O/AgO) with a catalyst for electro-chemical oxygen formation, wherein the catalyst is selected from cobalt oxide (Co3O4), mangan oxide (Mn304 or Mn02), cobalt nickel oxide (CoNi02), lanthan calcium cobalt oxide (LaxCa1-xCoO3), ruthenium oxide (RuO2), iridium oxide (IrO2), platinum (Pt), palladium (Pd) and mixtures thereof. The invention also relates to an accumulator comprising one or more secondary cells, as well as a method for charging and a method for discharging a secondary cell or an accumulator.