Binbin Wei
Xiamen University
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Publication
Featured researches published by Binbin Wei.
Journal of Materials Chemistry | 2017
Binbin Wei; Hanfeng Liang; Dongfang Zhang; Z.T. Wu; Zhengbing Qi; Zhoucheng Wang
Supercapacitors have been becoming indispensable energy storage devices in micro-electromechanical systems and have been widely studied over the past few decades. Transition metal nitrides with excellent electrical conductivity and superior cycling stability are promising candidates as supercapacitor electrode materials. In this work, we report the fabrication of CrN thin films using reactive DC magnetron sputtering and further their applications for symmetric supercapacitors for the first time. The CrN thin film electrodes fabricated under the deposition pressure of 3.5 Pa show an areal specific capacitance of 12.8 mF cm−2 at 1.0 mA cm−2 and high cycling stability with 92.1% capacitance retention after 20 000 cycles in a 0.5 M H2SO4 electrolyte. Furthermore, our developed CrN//CrN symmetric supercapacitor can deliver a high energy density of 8.2 mW h cm−3 at the power density of 0.7 W cm−3 along with outstanding cycling stability. Thus, the CrN thin films have great potential for application in supercapacitors and other energy storage systems.
RSC Advances | 2016
Dongfang Zhang; Zhengbing Qi; Binbin Wei; Zhoucheng Wang
Hf coatings are fabricated on the AZ91D Mg alloys by magnetron sputtering with bias voltage ranges from 0 to −125 V. Both potentiodynamic polarization test and neutral salt spray test reveal that the Hf coating deposited at −100 V exhibits the best protective performance. It possesses the lowest corrosion current density of 1.032 μA cm−2 and the highest protection rate of 6, respectively. This perfect anticorrosion property is due to the dense structure and low porosity induced by applying the appropriate bias voltage. Various types of corrosion sites after corrosion tests are examined in detail. The results indicate that the coating failure is strongly dependent on the coating defects and the random phase distribution in the substrate.
Surface & Coatings Technology | 2016
Dongfang Zhang; Binbin Wei; Z.T. Wu; Zhengbing Qi; Zhoucheng Wang
Vacuum | 2017
Z.T. Wu; P. Sun; Zhengbing Qi; Binbin Wei; Zhichao Wang
Surface & Coatings Technology | 2016
Z.T. Wu; Zhengbing Qi; Dongfang Zhang; Binbin Wei; Z.C. Wang
Vacuum | 2017
Zhengbing Qi; Z.T. Wu; Dongfang Zhang; Binbin Wei; Jinhuo Wang; Zhoucheng Wang
Journal of The European Ceramic Society | 2016
Z.T. Wu; Zhengbing Qi; Binbin Wei; Dongfang Zhang; Z.C. Wang
Ceramics International | 2018
Dongfang Zhang; Zhengbing Qi; Binbin Wei; Hao Shen; Zhoucheng Wang
Surface & Coatings Technology | 2017
Dongfang Zhang; Zhengbing Qi; Binbin Wei; Z.T. Wu; Zhoucheng Wang
Journal of Energy Chemistry | 2017
Binbin Wei; Hanfeng Liang; Rongrong Wang; Dongfang Zhang; Zhengbing Qi; Zhoucheng Wang