The effect of Zr substitution for Ti on the microstructures and electrochemical properties of electrode alloys Ti1−xZrxV1.6Mn0.32Cr0.48Ni0.6

Zhu, Yunfeng; Pan, Hongge; Gao, Mingxia; Ma, Jun; Li, S.Q.; Wang, Q.D.

doi:10.1016/s0360-3199(01)00117-3

Cited by 42 publications

(6 citation statements)

References 14 publications

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“…Ti-content impacts the discharge capacity in two competing ways: weaker M-H bonds lead to a lower capacity, but higher plateau pressure also improves the reversibility and increases the discharge capacity. Previous research has documented that increasing Ti-content has led to increasing [156][157][158][159], decreasing [155,158,160], and unchanged [150] electrochemical discharge capacities. A high Ti-content also contributes to a higher abundance of bcc phase [161] and a higher C14 abundance [162] because of its higher chemical potential [163].…”

Section: A-site Elementmentioning

confidence: 99%

C14 Laves Phase Metal Hydride Alloys for Ni/MH Batteries Applications

2017

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C14 Laves phase alloys play a significant role in improving the performance of nickel/metal hydride batteries, which currently dominate the 1.2 V consumer-type rechargeable battery market and those for hybrid electric vehicles. In the current study, the properties of C14 Laves phase based metal hydride alloys are reviewed in relation to their electrochemical applications. Various preparation methods and failure mechanisms of the C14 Laves phase based metal hydride alloys, and the influence of all elements on the electrochemical performance, are discussed. The contributions of some commonly used constituting elements are compared to performance requirements. The importance of stoichiometry and its impact on electrochemical properties is also included. At the end, a discussion section addresses historical hurdles, previous trials, and future directions for implementing C14 Laves phase based metal hydride alloys in commercial nickel/metal hydride batteries.

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Section: A-site Elementmentioning

confidence: 99%

C14 Laves Phase Metal Hydride Alloys for Ni/MH Batteries Applications

2017

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“…Traditional hydrogen storage alloy materials include AB-type intermetallic compounds [4], AB 2 -type Laves phase alloys [5,6], Mg-based alloys [7,8] and AB 5 -type rare-earth metal alloys [9,10]. Among these alloys, only the AB 5 -type rare-earth metal alloys are widely used in commercial batteries because of their suitable plateau pressure and fast activation. However, the discharge capacities of them are comparatively low.…”

Section: Introductionmentioning

confidence: 99%

Effect of Si on electrochemical hydrogen storage properties of crystalline Co

Zhang

Jiao

Yuan

et al. 2008

International Journal of Hydrogen Energy

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“…As Zr content increases, the thickness of formed ZrO 2 film gradually increases at x = 0.05-0.2, which prevents the corrosion/oxidation of La and Mg and thus gives rise to an improvement of cyclic stability [25]. Similar improvements are observed in Zr-substituted Mg-based [21] and Ti-based anodes [31]. anodes at several higher discharge current densities.…”

Section: Resultsmentioning

confidence: 53%

Influence of Zr Addition on Structure and Performance of Rare Earth Mg-Based Alloys as Anodes in Ni/MH Battery

Qiu

Huang

Chu

et al. 2015

Metals

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Abstract:In this study, the substitution of Mg with Zr in La 0.7 Mg 0.3 (Ni 0.85 Co 0.15 ) 3.5 was carried out with the purpose of improving the electrochemical performances. The structural and hydrogen storage properties in both gas-solid reaction and the electrochemical system were systematically studied on La 0.7 (Mg 0.3−x Zr x )(Ni 0.85 Co 0.15 ) 3.5 (x = 0.05, 0.1, 0.2, 0.3) alloys. Each tested alloy is composed of LaNi 3 phase, LaNi 5 phase and ZrNi 3 phase with different phase abundances. The electrochemical studies indicated that all Zr-substituted anodes possessed a much higher cycling capacity retention than pristine La 0.7 Mg 0.3 (Ni 0.85 Co 0.15 ) 3.5 . However, the maximum discharge capacity was reduced with the increase of Zr content. The potential-step tests showed that the diffusion of hydrogen atoms inside the anodes was decelerated after the introduction of Zr.

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The effect of Zr substitution for Ti on the microstructures and electrochemical properties of electrode alloys Ti1−xZrxV1.6Mn0.32Cr0.48Ni0.6

Cited by 42 publications

References 14 publications

C14 Laves Phase Metal Hydride Alloys for Ni/MH Batteries Applications

C14 Laves Phase Metal Hydride Alloys for Ni/MH Batteries Applications

Effect of Si on electrochemical hydrogen storage properties of crystalline Co

Influence of Zr Addition on Structure and Performance of Rare Earth Mg-Based Alloys as Anodes in Ni/MH Battery

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