Iron-substituted AB5-type MH electrode
Source abstract
Abstract
The present investigation is aimed to study MmNi5-type (Mm = Mischmetal) hydrogen storage alloys with composition, Mm0·8La0·2Ni3·7Al0·38Co0·3Mn0·6−x Mo0·02Fe x (x = 0, 0·1, 0·2 and 0·3). The alloys are synthesized by radio-frequency induction melting. To study their electrochemical properties via measurements of discharge capacity, activation process, rate capability and cyclic stability, electrodes are fabricated using as-synthesized and annealed version of the alloys. The maximum discharge capacity is recorded as 288 mAhg−1 for the iron concentration, x = 0·1, as compared to 270 mAhg−1 for the alloy electrode without iron. Similarly, 99% cyclic stability is observed in annealed alloy electrode (x = 0·1) as compared to 78% in the alloy electrode without iron. Hence, small amount of iron-substitution (x = 0·1) in the alloy is found to improve the electrochemical properties. This improvement is thought to be due to less pulverization of the alloy in electrochemically-cycled alloy, as confirmed through structural and microstructural characterizations carried out by X-ray diffraction phase analysis and scanning electron microscopy of as-fabricated and electrochemically-cycled electrodes.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Metallurgical and Alloy Processes · Hydrogen Storage and Materials · Metal and Thin Film Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (25)
Show source-provided references
1. Anantha M V and Ananthi P 2008 Int. J. Hydrogen Energy 33 577910.1016/j.ijhydene.2008.07.011 ↗
2. Anantha M V, Ganesana M, Renganathana N G and Lakshmi S 2009 Int. J. Hydrogen Energy 34 35610.1016/j.ijhydene.2008.09.072 ↗
3. Ayari M, Boncour V P, Lamloumi J, Guegan A P and Guillot M 2005 J. Magn. Magn. Mater. 288 37410.1016/j.jmmm.2004.09.122 ↗
4. Bououdina M, Soubeyroux J L, Rango D P and Fruchart D 2000 Int. J. Hydrogen Energy 25 105910.1016/S0360-3199(99)00087-7 ↗
5. Fenga H, Liua X, Tiana X, Chia B, Huanga L H and Xub J 2009 Int. J. Hydrogen Energy 34 188610.1016/j.ijhydene.2008.11.094 ↗
6. Geng M, Han J W, Feng F and Northwood D O 1999 J. Electrochem. Soc. 146 237110.1149/1.1391943 ↗
7. Li C J, Wang F R, Cheng W H, Li W and ZHoo W T 2001 J. Alloys Compds 315 21810.1016/S0925-8388(00)01282-2 ↗
8. Liua X, Fenga H, Tiana X, Chia B, Yana S and Xub J 2009 Int. J. Hydrogen Energy 34 729110.1016/j.ijhydene.2009.06.071 ↗
9. Metzger W, Westfall R and Hermann A 1998 Int. J. Hydrogen Energy 23 117910.1016/S0360-3199(97)00156-0 ↗
10. Mishima R, Miyamura H, Sakai T, Kuriyama N, Ishikawa H and Uchara I 1993 J. Alloys Compds 192 17610.1016/0925-8388(93)90223-A ↗
11. Moussa B M, Abdellaoui M, Mathlouthi H, Lamloumi J and Percheron Guegan A 2006 J. Alloys Compds 407 25610.1016/j.jallcom.2005.05.039 ↗
12. Moussa B M, Abdellaoui M, Mathlouthi H, Lamloumi J and Percheron Guegan A 2008 J. Alloys Compds 458 41010.1016/j.jallcom.2007.03.123 ↗
13. Nasako K, Ito Y and Hiro N 1998 Int. J. hydrogen Energy 23 92110.1016/S0360-3199(97)00158-4 ↗
14. Pan H, Ma J, Wang C, Chen S, Wang X, Chen C and Wang Q 1999 J. Alloys. Compds 293-295 64810.1016/S0925-8388(99)00359-X ↗
15. Pandey S K, Srivastava A and Srivastava O N 2007 Int. J. Hydrogen Energy 32 246110.1016/j.ijhydene.2006.12.003 ↗
16. Qin F, Guo L H, Chen J P and Chen Z J 2008 Int. J. Hydrogen Energy 33 70910.1016/j.ijhydene.2007.10.029 ↗
17. Raju M, Manimaran K, Ananth M V and Renganathan N G 2007 Int. J. Hydrogen Energy 32 172110.1016/j.ijhydene.2006.09.035 ↗
18. Sakai T, Miyamura H, Kuriyama N, Ishikawa H and Uchara I 1994 Zeit. Fur. Phys. Chem. Bd 183 S 333-346 137310.1524/zpch.1994.183.Part_1_2.333 ↗
19. Singh R K, Lototsky M V and Srivastava O N 2007 Int. J. Hydrogen Energy 32 297110.1016/j.ijhydene.2007.01.017 ↗
20. Solonin Y M, Skorokhod V V, Solonin S M, Kolomiets L L, Savin V V and Bratanich T I 1999 Int. J. Hydrogen Energy 24 27710.1016/S0360-3199(98)00044-5 ↗
21. Srivastava S and Srivastava O N 1998 Int. J. Hydrogen Energy 23 710.1016/S0360-3199(97)00019-0 ↗
22. Wang C S, Wang X H, Lei Y Q, Chen C P and Wang Q D 1997 Int. J. Hydrogen Energy 22 111710.1016/S0360-3199(97)00013-X ↗
23. Wei X, Liu S, Dong H, Zhang P, Liu Y, Zhu J and Yu G 2007 Electrochim. Acta 52 242310.1016/j.electacta.2006.08.067 ↗
24. Xu Y, Chen C, Wang X and Wang Q 2007 Int. J. Hydrogen Energy 32 53710.1016/j.ijhydene.2006.06.046 ↗
25. Zhao X, Ding Y, Yang M and Ma L 2008 Int. J. Hydrogen Energy 33 8110.1016/j.ijhydene.2007.09.022 ↗