A5101671364- Supercapacitor Materials and Fabrication
- Advancements in Battery Materials
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- Innovative Educational Techniques
- Higher Education and Teaching Methods
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- Ideological and Political Education
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- Perovskite Materials and Applications
- Transition Metal Oxide Nanomaterials
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Yunnan Normal University
2018-2024
China University of Geosciences
2019
Central China Normal University
2004-2018
Sichuan Normal University
2012
Fujian Normal University
2011
Anhui University
2011
Institute of Law
2011
Hunan First Normal University
2008-2010
Northwest Normal University
2007-2009
First People's Hospital of Kunshan
2006
Highly conductive carbon–CoO nanowire array electrodes on 3D nickel foam were designed with ultrahigh specific capacitance (3282.2 F g<sup>−1</sup>), approaching the CoO theoretical value. Assembled into an asymmetric supercapacitor, energy density is ∼58.9 W h kg<sup>−1</sup>, a record among Co-based supercapacitors.
A three dimensional (3D) porous framework-like N-doped carbon (PFNC) with a high specific surface area was successfully fabricated through ammonia doping and graphitization based on pomelo peel. The obtained PFNC exhibits an enhanced capacitance (260 F g–1 at 1 g–1) superior cycling performance (capacitance retention of 84.2% after 10000 cycles 10 account numerous voids pores which supply sufficient pathways for ion diffusion during cycling. Furthermore, asymmetric PFNC//PFN device...
One-dimensional CuO nanoribbons and three-dimensional nanoflowers were synthesized via a facile, rapid, low-temperature, one-pot water bath method, in which the synthesis was performed Cu(CH3COO)2/NaOH aqueous/ethanol systems at 70 °C for 15 min. Control over shape dimensionality of well-defined single crystals achieved simply by varying order addition reactive materials. X-ray diffraction, scanning electron microscopy, transmission selected area diffraction used to characterize products....
Lithium–sulfur batteries (LSBs) hold great potential as next-generation electrochemical energy storage and conversion systems owing to their higher theoretical capacity (1675 mAh/g). However, the shuttling of soluble polysulfides with slow redox reaction kinetics has restricted commercialization LSBs. The design synthesis effective cathode hosts provide a promising solution improving performances Herein, we report composite macro/mesoporous carbon (MMC) coupled defective TiO2 nanoparticles...
Developing high-performance electrode materials is in high demand for the development of supercapacitors. Herein, defect and interface engineering has been simultaneously realized NiMoO4 nanowire arrays (NWAs) using a simple sucrose coating followed by an annealing process. The resultant hierarchical oxygen-deficient NiMoO4@C NWAs (denoted as "NiMoO4-x@C") are grown directly on conductive ferronickel foam substrates. This composite affords direct electrical contact with substrates...
An all-carbon based composite composed of hollow mesoporous carbon covered with graphene oxide sheets has been designed as a novel dynamically bipolar cathode host for lithium–sulfur batteries impressive electrochemical performances.
A novel carbon-CoO-NiO-NiCo2O4 integrated electrode has been designed by reducing the hetero-structured NiCo2O4 nanosheet array with C2H2 on nickel foam at a low temperature of 350 °C. The topotactical transformation from to first conceived and investigated. Such unique nanoarchitectures exhibit excellent electrochemical performance ultrahigh capacitance desirable cycle life high rates.
Hydrous NiMoO<sub>4</sub> nanoflake arrays on Ni foam show superior cycle ability and specific capacitance.
A high-performance supercapacitor electrode is designed and fabricated with the 3D interconnected continuous nanoporous Co/CoO core–shell hybrid nanostructure grown on nickel foam. The nanostructures are obtained via a hydrothermal method, followed by high-temperature annealing in hydrogen atmosphere, finally placed air at 50 °C for 1 h. assembled conductive metal–core CoO shell, brings low resistance, high specific capacitance of 5.632 F cm−2 good capability stability (81.5% retention after...
Oxygen vacancy has been suggested to play a role in the electrochemical ability of NiMoO 4 . The band structure and density state bulks with different concentrations oxygen were investigated by first-principles calculation. Original shows semiconductive properties direct gap 0.136 eV. When one three vacancies introduced supercell, transforms metallic properties, formation energy increases increased number vacancies. lead electron localization Ni 3d Mo nearby Fermi level, resulting higher...
All inorganic perovskite materials have drawn extensive attention, owing to their outstanding performance, facile solution-processed method, and potential applications in optoelectronic devices. However, uncontrollable morphology, high defect density, instability of perovskites prepared via method are the main challenges for large-scale production commercialization. Herein, we <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD">...
The different charge carrier transfer processes as well termination dependence of band alignment in the CNT/CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> heterojunction.
In view of the big consumption and low rate utilization physical education curriculum resources among colleges universities, research uses collaborative mode informational platform to implement sharing in different universities teaching. This paper analyze characteristics teaching is based on this while can help achieve resources. order improve reduce conflicts using pay more attention internet plan cross researches platform. While arrange aims realize across universities.
In this work, cobalt-based oxides (CoO, NiCo2O4, ZnCo2O4)/carbon nanostructures were obtained in the atmosphere of C2H2/N2 at relatively low temperature (less than 500 °C). Cobalt-based here not used as catalysts but oxidants to participate redox reaction during carbon deposition. Time-dependent evolution experiments carried out investigate growth process on oxides. By ex-situ observation SEM and TEM, we found that CoO surface, grew from dots crystalline layer. But for NiCo2O4 ZnCo2O4,...
δ-MnO2 is considered as a potential cathode material for aqueous Zn-ion batteries. Moreover, the unstable crystal structure and sluggish reaction kinetics restricted development of its available capacity cycling stability. Herein, we utilized Cr to modulate by simple hydrothermal method develop materials with better stability electron transport properties. The introduction improved specific δ-MnO2, particularly, 3% doped (3%Cr-MnO2) electrode exhibited large 229.2 mAh·g-1 at 0.1 A·g-1 an...