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Dive into the research topics where Jiewu Zhu is active.

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Featured researches published by Jiewu Zhu.


Journal of The Electrochemical Society | 2004

Electrochemical Properties of Co-Free Ml0.8Mg0.2Ni3.4Al0.4 Hydrogen Storage Alloy Ballmilled with Ni and Mo

Rui Tang; Yongning Liu; Jiewu Zhu; Guang Yu

In order to improve the electrochemical properties of Co-free Ml 0.8 Mg 0.2 Ni 3.4 Al 0.4 alloy, the alloy powder was ballmilled with Ni and Mo powders, respectively. The surface morphology and composition of the treated powder were examined by metallograph and X-ray photoelectron spectrum. The electrochemical capacity, rate dischargeability, and cycle life were investigated. It was found that the surface of the alloy powder was coated with a Ni or Mo film and the surface modification enhanced the electrochemical capacity, high-rate dischargeability, and cycle life. The Ni-coated alloy electrode had the highest electrochemical capacity of 325 mAh/g and high-rate dischargeability of 59.4%, while the Mo-coated alloy electrode exhibited the best cycle life. An electrochemical capacity of 320 mAh/g was achieved, and 85% of the initial capacity remained after 300 cycles for the Mo-coated alloy, which shows a great potential for applications for Ni-MH batteries.


Electrochimica Acta | 2007

Influence of temperature, chloride ions and chromium element on the electronic property of passive film formed on carbon steel in bicarbonate/carbonate buffer solution

D.G. Li; Y.R. Feng; Z.Q. Bai; Jiewu Zhu; M. Zheng


Carbon | 2005

Temperature and catalyst effects on the production of amorphous carbon nanotubes by a modified arc discharge

Tingkai Zhao; Yongning Liu; Jiewu Zhu


Carbon | 2004

Amorphous carbon nanotubes produced by a temperature controlled DC arc discharge

Yaxiong Liu; Xiaolong Song; Tingkai Zhao; Jiewu Zhu; Michael Hirscher; F Phillipp


Electrochimica Acta | 2007

Microstructures and electrochemical properties of Co-free AB5-type hydrogen storage alloys through substitution of Ni by Fe

Xuedong Wei; Sheshe Liu; Hui Dong; Peng Zhang; Yongning Liu; Jiewu Zhu; Guang Yu


Journal of Alloys and Compounds | 2008

Electrochemical performances of a Co-free La(NiMnAlFe)5 hydrogen storage alloy modified by surface coating with Cu

Xuedong Wei; Peng Zhang; Hui Dong; Yongning Liu; Jiewu Zhu; Guang Yu


Intermetallics | 2006

Effect of Al substitution for Co on the hydrogen storage characteristics of Ml0.8Mg0.2Ni3.2Co0.6−xAlx (x=0–0.6) alloys

Rui Tang; Yongning Liu; Changchun Zhu; Jiewu Zhu; Guang Yu


International Journal of Hydrogen Energy | 2007

Effect of Al and W substitution for Ni on the microstructure and electrochemical properties of La1.3CaMg0.7Ni9-x(Al0.5W0.5)xLa1.3CaMg0.7Ni9-x(Al0.5W0.5)x hydrogen storage alloys

Peng Zhang; Yongning Liu; Jiewu Zhu; Xuedong Wei; Guang Yu


Journal of Alloys and Compounds | 2005

The microstructures and electrochemical properties of non-stoichiometric low-Co AB5 alloys containing small amounts of Mg

Peng Zhang; Xuedong Wei; Yongning Liu; Jiewu Zhu; Zhanling Zhang; Tingkai Zhao


Electrochimica Acta | 2006

Effect of Ca on the microstructural and electrochemical properties of La2.3−xCaxMg0.7Ni9 hydrogen storage alloys

Peng Zhang; Yongning Liu; Rui Tang; Jiewu Zhu; Xuedong Wei; Sheshe Liu; Guang Yu

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Yongning Liu

Xi'an Jiaotong University

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Guang Yu

Xi'an Jiaotong University

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Xuedong Wei

Xi'an Jiaotong University

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Rui Tang

Xi'an Jiaotong University

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Peng Zhang

Xi'an Jiaotong University

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Changchun Zhu

Xi'an Jiaotong University

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Tingkai Zhao

Northwestern Polytechnical University

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Xiaolong Song

Xi'an Jiaotong University

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Zhanling Zhang

Xi'an Jiaotong University

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Hui Dong

Xi'an Jiaotong University

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