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| 1 | Fabrication and characterization of NiO films for energetic nano-multilayers by direct current reactive sputtering显示文摘NiO films were fabricated by reactive direct current magnetron sputtering on glass and alumina substrates for the application in energetic nano-multilayers.The structural and thermal properties of the films were investigated with the volume ratio of oxygen to argon ranging from 1:9 to 3:2, and the optimized ratio value is obtained as 1:3, which was confirmed by X-ray diffraction(XRD), atomic force microscopy and ultrafast measurement system. The effect of the film thickness, varying from150 to 900 nm, on the structural properties was characterized by XRD and scanning electron microscopy(SEM).XRD analysis reveals that the(111) lattice plane is the preferred orientation. The intensities of preferential peaks and the grain sizes increase as the film thicknesses increase. | Yi-Chao Yan Wei Shi Hong-Chuan Jiang Jie Xiong Wan-Li Zhang | 2018 | Rare Metals2018，37，7： | 1 |
| 2 | MXene-wrapped ZnCo_(2)S_(4)core-shell nanospheres via electrostatic self-assembly as positive electrode materials for asymmetric supercapacitors显示文摘Constructing electrode materials with large capacity and good conductivity is an effective approach to improve the capacitor performance of asymmetric supercapacitors(ASCs).In this paper,ZnCo_(2)S_(4)core-shell nanospheres are constructed by two-step hydrothermal method.In order to improve the chemical activity of ZnCo_(2)S_(4),ZnCo_(2)S_(4)is activated using cetyltrimethylammonium bromide(CTAB).Then,MXene nanosheets are fixed on the surface of ZnCo_(2)S_(4)by electrostatic selfassembly method to improve the specific surface area of ZnCo_(2)S_(4)and MXene-wrapped ZnCo_(2)S_(4)composite is prepared in this work.Owing to the synergy effect between MXene nanosheets and ZnCo_(2)S_(4)core-shell nanospheres,the as-prepared composite displays fast ion transfer rate and charge/discharge process.The capacity of the MXenewrapped ZnCo_(2)S_(4)composite can reach 1072 F·g^(-1),which is far larger than that of ZnCo_(2)S_(4)(407 F·g^(-1))at 1 A·g^(-1).An ASC device is assembled,which delivers 1.7 V potential window and superior cyclic stability(95.41%capacitance retention).Furthermore,energy density of this device is up to 30.46 Wh·kg^(-1)at a power density of850 W·kg^(-1).The above results demonstrate that MXenewrapped ZnCo_(2)S_(4)composite has great application prospects in electrochemical energy storage field. | Ji-Qiu Qi Chen-Chen Zhang Hao Liu Lei Zhu Yan-Wei Sui Xiu-Juan Feng Wen-Qing Wei Hao Zhang Peng Cao | 2022 | Rare Metals2022，41，8： | 1 |
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