Electrochemical kinetic performances of electroplating Co–Ni on La–Mg–Ni-based hydrogen storage alloys

Li, Yuan; Yang, Tao; Ke, Dandan; Ma, Yufei; Han, Shumin

doi:10.1016/j.apsusc.2015.09.220

Cited by 20 publications

(5 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Subsequently, the mixture containing alloy powders were vibrated in temperature-constant bath at the temperatures 30 The characterization and electrochemical test methods are the same as those we reported previously. 28…”

Section: Methodsmentioning

confidence: 99%

“…Ni, Co or Co oxides were recently supposed to be effective coatings to increase the electro-catalytic activity for the hydrogen oxidation reaction. [26][27][28] To get a more electro-active electrode material previous reports show that Mo-supported or Mo-doped catalysts showed higher catalytic activity in hydrogen evolution reaction. 29,30 In our study we introduce Mo element into the widely-used Co modification layer on the alloy surface and study the Mo-Co composite coating layer on the electrochemical properties of La-Mg-Ni-based hydrogen storage alloy electrodes.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Effect of Complex Surface Treatment on Morphology and Electrochemical Properties of La–Mg–Ni-Based Alloys

Wang

Yang

et al. 2017

J. Electrochem. Soc.

Self Cite

View full text Add to dashboard Cite

La-Mg-Ni-based hydrogen storage alloys show high electrochemical capacity, and thus have been considered as promising negative electrode materials of metal hydride/nickel secondaray batteries. In our endeavor to improving high rate dischargeability of the alloys, first fluorination and subsequent microencapsulation with Co-Mo modificatioin layer was performed on the alloy particle surface. The scanning electrode microscopy and energy despersive spectroscopy results show that the untreated alloy has a smooth surface, while the complex treatment creats a coarse modification layer, consisting mainly of Mo and Co elements. The electro-catalytic activity on the alloy surface was ameliorated owing to the charge centers in the modification layer, bringing a noticleable improvement to the electrochemical properties. The maximum discharge capacity increases by 18 mAh/g, the middle discharge voltage rises by 0.013 V and the high rate dischargeability at 1500 mA/g mouts up by 9.2%.

show abstract

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

Effect of Complex Surface Treatment on Morphology and Electrochemical Properties of La–Mg–Ni-Based Alloys

Wang

Yang

et al. 2017

J. Electrochem. Soc.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Studies had shown that metals such as In, Ni, and W improve the wear resistance of sliding bearing coatings [23,24]. The addition of rare earth metals such as La, Ta, Nb significantly improved the frictional mechanical properties of the sliding bearing coating [25][26][27]. The friction coefficient of electroplated coppertin alloy, aluminum-tin alloy and babbitt alloys under dry friction conditions is generally 0.3-0.6, which needs to be combined with lubricating oil and grease to satisfy the lubrication requirements [28].…”

Section: Electroplatingmentioning

confidence: 99%

A Review of Surface Treatments for Sliding Bearings Used at Different Temperature

Cao¹,

Qin²,

Yu³

et al. 2019

Friction, Lubrication and Wear

View full text Add to dashboard Cite

The boundary lubrication and dry friction of plain bearings at different work temperature are unable to be avoided under the start and stop condition. The poor lubrication is one reason of bearing broken. In order to improve the tribological properties and select the best treatment for different bearings used at different temperature, the studies of different treatment technologies are reviewed in this paper. The review shows that the shortages of bonding fiber woven materials, inlaying solid lubricating materials, electro plating and magnetron sputtering are poor temperature resistance, low load capacity, environment pollution and low production efficiencies respectively. Based on the analyses and summaries, the liquid dope spraying and thermal powder spraying are suggested to deposit coating on the surface of bearing which working temperature is lower than 200 and above 800°C respectively. However, the technology processes, the mechanisms of spraying and self-lubrication materials should be studied further and deeply.

show abstract

“…Nickel-cobalt alloys have been used as an important material in different industries for various reasons, such as high strength, high hardness, good wear resistance, good corrosion resistance, thermal conductivity, electrocatalytic properties, magnetic properties and even memory properties [1][2][3][4][5][6]. Co-Ni alloys have a high value of practical importance due to protective and decorative values.…”

Section: Introductionmentioning

confidence: 99%

Study on wear and corrosion properties of functionally graded nickel–cobalt– $$(\hbox {Al}_{2}\hbox {O}_{3})$$ ( Al 2 O 3 )

2019

View full text Add to dashboard Cite

Functionally graded nickel-cobalt coatings with/without alumina nanoparticles were pulse electrodeposited on a carbon steel substrate by a continuous decrease in duty cycle from 95 to 10% at different frequencies of 100, 500 and 1000 Hz. The effect of pulse parameters on the nanoparticle content, chemical composition, microstructure, corrosion properties and tribological behaviour of coatings was studied. Energy-dispersive X-ray spectroscopy analysis showed that the amount of cobalt is gradually reduced and the content of alumina nanoparticles is increased from the substrate/coating interface to the surface. Based on the electrochemical studies in 3.5 wt% NaCl, the nanocomposite coatings gain the highest corrosion resistance at the lowest frequency. Also, the hardness of coatings gradually increased. Evaluation of the tribological behaviour of coatings by a pin-on-disk wear test showed that the nanoparticles have a positive effect on wear resistance and improve it by increasing frequency.

show abstract

Electrochemical kinetic performances of electroplating Co–Ni on La–Mg–Ni-based hydrogen storage alloys

Cited by 20 publications

References 26 publications

Effect of Complex Surface Treatment on Morphology and Electrochemical Properties of La–Mg–Ni-Based Alloys

Effect of Complex Surface Treatment on Morphology and Electrochemical Properties of La–Mg–Ni-Based Alloys

A Review of Surface Treatments for Sliding Bearings Used at Different Temperature

Study on wear and corrosion properties of functionally graded nickel–cobalt– $$(\hbox {Al}_{2}\hbox {O}_{3})$$ ( Al 2 O 3 )

Contact Info

Product

Resources

About