[1] H. Wang, S. Takenaka, K. Otsuka, Int. J. Hydrogen Energy 31(2006) 1732-1746. [2] B. Sakintuna, F. Lamari-Darkrim, M. Hirscher, Int. J. Hydrogen Energy 32 (2007) 1121-1140. [3] L.H. Kumar, B. Viswanathan, S.S. Murthy, J. Alloy. Compd. 461(2008) 72-76. [4] L. Schlapbach, A. Züttel, Nature 414 (2001) 353-358. [5] T. Spassov, L. Lyubenova, U. Köster, M.D. Baró, Mater. Sci. Eng.A 375e377 (2004) 794-799. [6] J.H. Woo, K.S. Lee, J. Electrochem. Soc. 146 (1999) 819-823. [7] M.S. Wu, H.R. Wu, Y.Y. Wang, C.C. Wan, J. Alloy. Compd. 302(2000) 248-257. [8] G.L. Lü, L.S. Chen, L.B. Wang, H.T. Yuan, J. Alloy. Compd. 321(2001) L1eL4. [9] S. Linderoth, N. Pryds, M. Ohnuma, A. Pedersen, M. Eldrup, N. Nishiyama, A. Inoue, Mater. Sci. Eng. A 304-306 (2001) 656e659. [10] M.Y. Song, S.N. Kwon, J.S. Bae, S.H. Hong, Int. J. Hydrogen Energy 33 (2008) 1711-1818. [11] G.Y. Liang, D.C. Wu, L. Li, L.J. Huang, J. Power Sources 186(2009) 528-531. [12] S. Todorova, T. Spassov, J. Alloy. Compd. 469 (2009) 193e196. [13] H.P. Ren, Y.H. Zhang, B.W. Li, D.L. Zhao, S.H. Guo, X.L. Wang,Int. J. Hydrogen Energy 34 (2009) 1429-1436. [14] Y.H. Zhang, C. Zhao, T. Yang, H.W. Shang, C. Xu, D.L. Zhao, J.Alloy. Compd. 555 (2013) 131-137. [15] L.Z. Ouyang, S.Y. Ye, H.W. Dong, M. Zhu, Appl. Phys. Lett. 90(2007) 021917. [16] L.Z. Ouyang, X.S. Yang, H.W. Dong, M. Zhu, Scripta Mater. 61(2009) 339-342. [17] L.Z. Ouyang, L. Yao, X.S. Yang, L.Q. Li, M. Zhu, Int. J. Hydrogen Energy 35 (2010) 8275-8280. [18] Y.H. Zhang, B.W. Li, H.P. Ren, F. Hu, G.F. Zhang, S.H. Guo, J.Alloy. Compd. 509 (2011) 5604-5610. [19] Y. Wu, W. Han, S.X. Zhou, M.V. Lototsky, J.K. Solberg, V.A.Yartys, J. Alloy. Compd. 466 (2008) 176-181. [20] X.Y. Zhao, Y. Ding, L.Q. Ma, L.Y. Wang, M. Yang, X.D. Shen, Int.J. Hydrogen Energy 33 (2008) 6727-6733. [21] E.A. Lass, Int. J. Hydrogen Energy 36 (2011) 10787-10796. |