The Influence of Chemical Modification by Silver on Hydrogen Storage Properties x of Nanocrystalline Ti2Ni Alloy |
| M. Balcerzak and M. Jurczyk
Institute of Materials Science and Engineering, Poznań University of Technology, pl. M. Skłodowskiej-Curie 5, 60-965 Poznań, Poland |
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| In this study mechanical alloying process with subsequent annealing at 750°C for 0.5 h were used to produce Ti2Ni-based nanocrystalline alloys and composite. To improve electrochemical properties, Ti-Ni-based alloy was chemically modified by 5 wt% of silver powder. X-ray diffraction analyses showed formation of nanocrystalline Ti2Ni main phase. Electrochemical studies revealed a positive effect of chemical modification by silver on Ti2Ni alloy. All synthesized materials were used as negative electrodes for Ni-MHx batteries. The highest discharge capacity equaled 303 mAh/g, at 40 mA/g discharge current. All electrochemical measurements were done in 6 M KOH solution. |
DOI: 10.12693/APhysPolA.126.892 PACS numbers: 82.47.Cb, 88.30.rd |