Phase Structure, Electrochemical Properties and Cyclic Characteristic of a Rhombohedral-Type Single-Phase Nd2MgNi9Hydrogen Storage Alloy

2016 ◽  
Vol 163 (7) ◽  
pp. A1474-A1483 ◽  
Author(s):  
Wenkai Du ◽  
Lu Zhang ◽  
Yuan Li ◽  
Yumeng Zhao ◽  
Shuqin Yang ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Phase Structure ◽  
Single Phase ◽  
Cyclic Characteristic

Effect of solidification rate on the phase structure and electrochemical properties of alloy Zr0.7Ti0.3(MnVNi)2

2003 ◽  
Vol 352 (1-2) ◽  
pp. 158-162 ◽  
Author(s):  
S.K. Zhang ◽  
K.Y. Shu ◽  
Y.Q. Lei ◽  
G.L. Lü ◽  
Q.D. Wang
Keyword(s):  
Electrochemical Properties ◽  
Phase Structure ◽  
Solidification Rate

Single phase A2B7-type La-Mg-Ni alloy with improved electrochemical properties prepared by melt-spinning and annealing

2019 ◽  
Vol 37 (12) ◽  
pp. 1305-1311 ◽  
Author(s):  
Yiming Li ◽  
Zhuocheng Liu ◽  
Guofang Zhang ◽  
Yanghuan Zhang ◽  
Huiping Ren
Keyword(s):  
Electrochemical Properties ◽  
Melt Spinning ◽  
Single Phase ◽  
Ni Alloy

High-B/sub s/ low-H/sub c/ CoNiFe films with bcc single-phase structure for write heads

2002 ◽  
Vol 38 (5) ◽  
pp. 2256-2258 ◽  
Author(s):  
Y. Okada ◽  
K. Kudo ◽  
N. Yoshida ◽  
M. Fuyama ◽  
H. Hoshiya
Keyword(s):  
Phase Structure ◽  
Single Phase ◽  
Write Heads

CHARACTERIZATION OF NANOCRYSTALLINE NICKEL–COBALT ALLOYS SYNTHESIZED BY DIRECT AND PULSE ELECTRODEPOSITION

2014 ◽  
Vol 28 (06) ◽  
pp. 1450043 ◽  
Author(s):  
M. SALEHI ◽  
A. SAIDI ◽  
M. AHMADIAN ◽  
K. RAEISSI
Keyword(s):  
Phase Structure ◽  
Single Phase ◽  
Nickel Sulfate ◽  
Cobalt Sulfate ◽  
Xrd Pattern ◽  
Ph Values ◽  
Nickel Cobalt ◽  
Co Alloys ◽  
Electrolyte Ph

Nanocrystalline Ni – Co alloys are electrodeposited by direct (DC) and pulse current (PC) in an electrolyte solution which consisted of nickel sulfate, cobalt sulfate and boric acid. Electrodeposition parameters including current density, electrolyte pH and pulse times in a single electrolyte bath were changed. XRD pattern showed that the structure of the alloys depends on Co content and the synthesis parameter and changed from single phase structure (fcc) to dual phase structure (fcc + hcp). The Co content in the deposited alloys declined from 70 at.% to 50 at.% by increasing in direct current from 70 mA/cm2 to 115 mA/cm2 and also decreased from 75 at.% to 33 at.% with decrease in pH values from 4 to 2. By applying PC the Co content changed from 76 at.% to 41 at.%. Magnetic properties measurements showed the saturation magnetization (Ms) increased with increasing the Co content. There was no significant effect on coercivity values (Hc) with change in Co content and about 40 Oe was obtained for all samples. The grain size of deposited alloys obtained between 24–58 nm and 15–21 nm by applying DC and PC, respectively.

Characterization and improvement of electrochemical properties of Pr5Co19-type single-phase La0.84Mg0.16Ni3.80 alloy

2015 ◽  
Vol 152 ◽  
pp. 265-273 ◽  
Author(s):  
Yumeng Zhao ◽  
Shumin Han ◽  
Yuan Li ◽  
Jingjing Liu ◽  
Lu Zhang ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Single Phase

scholarly journals Synthesis and Application of Inverse Spinel NiFe2O4 Produced by EDTA-citrate Method: Structural, Vibrational, Magnetic, and Electrochemical Properties

2021 ◽  
Author(s):  
Maitê Medeiros de Santana e Silva ◽  
Rafael A. Raimundo ◽  
Luciena S. Ferreira ◽  
Daniel A. Macedo ◽  
Marco A. Morales ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Single Phase ◽  
Crystal Size ◽  
Band Gap Energy ◽  
Inverse Spinel ◽  
Microstructural Characteristics ◽  
Crystallite Sizes ◽  
Ph Conditions ◽  
Synthesized Materials ◽  
Discharge Curves

Abstract In this paper we studied the production of single-phase NiFe2O4 powders synthesized by the complexation method combining EDTA-citrate. The structural, optical, magnetic, and electrochemical properties of were studied as a function of the synthesis pH. Powders obtained with pH 9 showed larger crystallite sizes (73 nm) in comparison to those produced with pH 3 (21 nm). The band gap energy was found to be inversely proportional to the crystal size (1.85 and 2.0 eV for powders with crystallites of 73 nm and 21 nm, respectively). The synthesized materials presented an inverse spinel crystalline structure. The samples obtained at higher pH conditions were found to be fully magnetic saturated with a saturation magnetization of 50.5 emu g-1, while that synthesized at pH 3 is unsaturated with a maximum measured magnetization of 48.4 emu g-1. Cyclic voltammetry and charge-discharge curves indicate a battery-type behavior, with an better performance for the material obtained at pH 9 (65 C g-1 at a specific current of 3 A g-1). The remarkable performance of the associated with its by microstructural characteristics (particle size, particle agglomeration and porosity). This work offers an alternative synthesis route for obtaining spinel ferrites for magnetic and electrochemical applications.

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