Normal-pulse-voltage-assisted in situ fabrication of graphene-wrapped MOF-derived CuO nanoflowers for water oxidation

2020 ◽  
Vol 56 (62) ◽  
pp. 8750-8753 ◽  
Author(s):  
Ying Wang ◽  
Shiqi Wang ◽  
Dayan Liu ◽  
Lin Zhou ◽  
Ran Du ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Catalytic Performance ◽  
Pulse Voltage ◽  
High Quality ◽  
In Situ Fabrication

Herein, a normal-pulse-voltage-assisted method is proposed for preparation of high quality graphene-wrapped CuO nanoflowers on CF. The as-obtained CuO NF@G/CF electrode exhibits a competitive OER catalytic performance in 1.0 M KOH solution.

The interlocked in situ fabrication of graphene@prussian blue nanocomposite as high-performance supercapacitor

2018 ◽  
Vol 47 (37) ◽  
pp. 13126-13134 ◽  
Author(s):  
Shi-Cheng Wang ◽  
Minli Gu ◽  
Luqing Pan ◽  
Junfeng Xu ◽  
Lei Han ◽  
...  
Keyword(s):  
Prussian Blue ◽  
High Performance ◽  
Great Promise ◽  
High Quality ◽  
In Situ Fabrication ◽  
Excellent Electrochemical Performance ◽  
One Step ◽  
The One ◽  
Method Show

High-quality graphene@prussian blue (G@PB) nanocomposite sheets fabricated via the one-step in situ hydrothermal method show great promise for energy-storage hybrid electrodes with excellent electrochemical performance.

In-situ fabrication and catalytic performance of Co-Mn@CuO core-shell nanowires on copper meshes/foams

2018 ◽  
Vol 147 ◽  
pp. 182-190 ◽  
Author(s):  
Lei Huang ◽  
Minfang Zheng ◽  
Dongqi Yu ◽  
Muhammad Yaseen ◽  
Lianjie Duan ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Core Shell ◽  
In Situ Fabrication ◽  
Shell Nanowires

Epitaxial growth manner and structure of superconducting oxide films

1990 ◽  
Vol 48 (4) ◽  
pp. 2-3
Author(s):  
Yoshichika Bando ◽  
Takahito Terashima ◽  
Kenji Iijima ◽  
Kazunuki Yamamoto ◽  
Kazuto Hirata ◽  
...  
Keyword(s):  
Ultrathin Films ◽  
Film Surface ◽  
High Energy ◽  
Epitaxial Films ◽  
Layer By Layer ◽  
Initial Growth ◽  
In Situ Growth ◽  
High Quality ◽  
Activated Reactive Evaporation

The high quality thin films of high-Tc superconducting oxide are necessary for elucidating the superconducting mechanism and for device application. The recent trend in the preparation of high-Tc films has been toward “in-situ” growth of the superconducting phase at relatively low temperatures. The purpose of “in-situ” growth is to attain surface smoothness suitable for fabricating film devices but also to obtain high quality film. We present the investigation on the initial growth manner of YBCO by in-situ reflective high energy electron diffraction (RHEED) technique and on the structural and superconducting properties of the resulting ultrathin films below 100Å. The epitaxial films have been grown on (100) plane of MgO and SrTiO, heated below 650°C by activated reactive evaporation. The in-situ RHEED observation and the intensity measurement was carried out during deposition of YBCO on the substrate at 650°C. The deposition rate was 0.8Å/s. Fig. 1 shows the RHEED patterns at every stage of deposition of YBCO on MgO(100). All the patterns exhibit the sharp streaks, indicating that the film surface is atomically smooth and the growth manner is layer-by-layer.

scholarly journals Rapid mechanochemical synthesis of polyanionic cathode with improved electrochemical performance for Na-ion batteries

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xing Shen ◽  
Quan Zhou ◽  
Miao Han ◽  
Xingguo Qi ◽  
Bo Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrochemical Performance ◽  
Mechanochemical Synthesis ◽  
Cathode Materials ◽  
Industrial Application ◽  
Synthesis Process ◽  
In Situ Fabrication ◽  
Stationary Energy ◽  
Carbon Coated

AbstractNa-ion batteries have been considered promising candidates for stationary energy storage. However, their wide application is hindered by issues such as high cost and insufficient electrochemical performance, particularly for cathode materials. Here, we report a solvent-free mechanochemical protocol for the in-situ fabrication of sodium vanadium fluorophosphates. Benefiting from the nano-crystallization features and extra Na-storage sites achieved in the synthesis process, the as-prepared carbon-coated Na3(VOPO4)2F nanocomposite exhibits capacity of 142 mAh g−1 at 0.1C, higher than its theoretical capacity (130 mAh g−1). Moreover, a scaled synthesis with 2 kg of product was conducted and 26650-prototype cells were demonstrated to proof the electrochemical performance. We expect our findings to mark an important step in the industrial application of sodium vanadium fluorophosphates for Na-ion batteries.

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