| Autor: |
A. Ghanem, A. Hadj Mebarek, Abdallah Merrouche, Laid Telli, S. Walter |
| Rok vydání: |
2010 |
| Předmět: |
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| Zdroj: |
Solid State Ionics. 181:701-704 |
| ISSN: |
0167-2738 |
| DOI: |
10.1016/j.ssi.2010.03.038 |
| Popis: |
The aim of this work is to study a new composite material anode made of Zn + (NH 4 ) 2 ZnCl 4 associated with a MnO 2 cathode for proton conductive solid state electrolyte (H-montmorillonite) electrochemical generators. The double salt (NH 4 ) 2 ZnCl 4 has been prepared and characterized by X-ray diffraction and differential thermogravimetry. The composition of the anode has been optimized. Generators using such an anode show a specific capacity of about 273 Ah kg − 1 with a high energy to mass ration of about 345 Wh kg − 1 when the relative humidity is at saturation level (RH = 100%) These characteristics depend strongly on both the hydration of the clay and of the double salt. The results of the electrochemical study of such generators as well as the physico-chemical characterization of the anode reaction induced compounds show clearly that the formation of a new phase takes place, and gave us the possibility of proposing a new anodic reaction. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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