Search results for: Yunhuai Zhang

Items from 1 to 20 out of 50 results

article

In Situ Constructing Metal–Organic Complex Interface Layer Using Biomolecule Enabling Stabilize Zn Anode

Zaifang Yuan, Kaiyuan Zhan, Di Li, Yujuan Pu, more

Small > 20 > 33 > n/a - n/a

Aqueous zinc‐ion batteries (ZIBs) are considered as a promising candidate for next‐generation large‐scale energy storage due to their high safety, low cost, and eco‐friendliness. Unfortunately, commercialization of ZIBs is severely hindered owing to rampant dendrite growth and detrimental side reactions on the Zn anode. Herein, inspired by the metal–organic complex interphase strategy, the authors...

article

Phosphorization Engineering on Metal–Organic Frameworks for Quasi‐Solid‐State Asymmetry Supercapacitors

Xijun Wei, Yingze Song, Lixian Song, Xu Dong Liu, more

Small > 17 > 4 > n/a - n/a

Porous carbon and metal oxides/sulfides prepared by using metal–organic frameworks (MOFs) as the precursors have been widely applied to the realm of supercapacitors. However, employing MOF‐derived metal phosphides as positive and negative electrode materials for supercapacitors has scarcely been reported thus far. Herein, two types of MOFs are used as the precursors to prepare CoP and FeP₄ nanocubes...

article

High Energy Capacitors Based on All Metal‐Organic Frameworks Derivatives and Solar‐Charging Station Application

Xijun Wei, Wanping Hu, Huarong Peng, Yuli Xiong, more

Small > 15 > 30 > n/a - n/a

High energy and efficient solar charging stations using electrochemical capacitors (ECs) are a promising portable power source for the future. In this work, two kinds of metal‐organic framework (MOF) derivatives, NiO/Co₃O₄ microcubes and Fe₂O₃ microleaves, are prepared via thermal treatment and assembled into electrochemical capacitors, which deliver a relatively high specific energy density of 46...

article

Fabrication of novel CuWO₄ nanoparticles (NPs) for photocatalytic degradation of methylene blue in aqueous solution

Xiaolin Hu, Di Gao, Yanhong Li, Hongmei Dong, more

SN Applied Sciences > 2019 > 1 > 1 > 1-10

In this paper, the UV–Vis photocatalytic degradation of methylene blue (MB) by copper tungstate (CuWO₄) has been studied in neutral aqueous heterogeneous suspensions CuWO₄ nanochains and nanoparticles were synthesized via solvothermal method. CuWO₄ was evaluated regarding a photocatalytic degradation of organic dyes, which is highly important to decontaminate water. Our results demonstrate that the...

article

Enhancement of Photoelectrochemical Hydrogen Evolution of P-Type Silicon Nanowires Array by Loading MoS₂

Lei Qiao, Mingjia Liao, Kaiwei Fang, Xiaolan He, more

Silicon > 2019 > 11 > 4 > 1963-1970

To improve photoelectrochemical properties of Si nanowires (SiNWs), MoS₂/SiNWs is prepared via two-step method. SiNWs is synthesized by metal−catalyzed electroless etching (MCEE) method and MoS₂ is subsequently deposited onto SiNWs through the direct thermal decomposition method. MoS₂ is introduced as both light absorber and catalyst for hydrogen evolution reaction (HER). Moreover, it forms a heterojunction...

article

Surface engineering by a novel electrochemical activation method for the synthesis of Co3+ enriched Co(OH)2/CoOOH heterostructure for water oxidation

Lu Liu, Yingqing Ou, Di Gao, Lin Yang, more

Journal of Power Sources > 2018 > 396 > C > 395-403

The large-scale application of oxygen evolution reaction electrocatalysts is limited by many challenges such as sluggish kinetics, low conductivity, and instability. Remarkably, Co³⁺ plays a vital role in oxygen evolution catalytic process because Co³⁺ ions are regarded as active sites. Developing catalysts with high Co³⁺ content is highly promising to improve the efficiency of water oxidation. In...

article

Mo6+ Doped BiVO4 with improved Charge Separation and Oxidation Kinetics for Photoelectrochemical Water Splitting

Lin Yang, Yuli Xiong, Wenlong Guo, Jiangna Guo, more

Electrochimica Acta > 2017 > 256 > C > 268-277

Monoclinic bismuth vanadate (BiVO₄) has been widely applied as a promising n-type semiconductor for photoelectrochemical (PEC) water splitting because of its low cost, environmentally friendly, and relatively narrow band gap of ∼2.4eV. Here, we developed a facile fabrication of Mo doped BiVO₄ photoanode on the fluorine-doped tin oxide substrate by electrodeposition method and used these samples to...

article

Ultrathin α-MnO2 Nanosheets Wrapped on Acanthosphere-like Microspheres with Highly Reversible Performance for Energy Storage

Huarong Peng, Yanhong Li, Chunli Liu, Xijun Wei, more

Electrochimica Acta > 2017 > 247 > C > 745-753

Architecturally assembling primary building blocks into the expected geometric heterostructure is a tremendous challenge due to the interfaces dislocation and stretch resulting from the lattice-mismatch between heterogeneous building blocks. Although different dimensional nanomaterials have been synthesized, the branched acanthosphere-like hierarchical architecture is needed to be developed and the...

article

Corrigendum to “A novel high energy hybrid Li-ion capacitor with a three-dimensional hierarchical ternary nanostructure of hydrogen-treated TiO2 nanoparticles/conductive polymer/carbon nanotubes anode and an activated carbon cathode” [J. Power Sources 355 (2017) 1–7]

Gang Tang, Peng Xiao, Yunhuai Zhang, Hao Liu, more

Journal of Power Sources > 2017 > 360 > C > 646

article

A novel high energy hybrid Li-ion capacitor with a three-dimensional hierarchical ternary nanostructure of hydrogen-treated TiO2 nanoparticles/conductive polymer/carbon nanotubes anode and an activated carbon cathode

Gang Tang, Liujun Cao, Peng Xiao, Yunhuai Zhang, more

Journal of Power Sources > 2017 > 355 > C > 1-7

Lithium ion capacitors (LICs) are considered to be high-performance energy storage devices that have stimulated intense attention to bridge the gap between lithium ion battery and supercapacitor. Currently, the major challenge for LICs has been to improve the energy density without sacrificing the high rate of power output performance. Herein, we designed a three-dimensional (3D) hierarchical porous...

article

Iron–doped NiCoO2 nanoplates as efficient electrocatalysts for oxygen evolution reaction

Xiaojing Duan, Yang Yang, Chunli Liu, Ming Zhou, more

Applied Surface Science > 2017 > 407 > C > 177-184

Electrocatalysts play a vital role to overcome the slow kinetics of the oxygen evolution reaction (OER). Herein, we developed iron-doped (Fe-doped) NiCoO₂ nanoplates with NaCl-type structure as an efficient electrocatalyst to speed up OER. NiCoO₂ nanoplates doping with different concentration of Fe were optimized. Specifically, the catalytic properties of 10mol% Fe-doped NiCoO₂ (denoted as FNC0.1)...

article

Liquid-phase exfoliation of NH4Co0.4Ni0.6PO4·H2O for energy storage device

Chunli Liu, Huarong Peng, Liujun Cao, Xiaojing Duan, more

Journal of Alloys and Compounds > 2017 > 701 > C > 67-74

Liquid-phase exfoliation is an effective method to fabricate thin nanosheet materials with layered structure. In this paper, we successfully synthesized NH₄Co_0.4Ni_0.6PO₄·H₂O nanosheets with the thickness of about tens of nanometers through liquid-phase exfoliation under ultrasonication. Specifically, the formamide solution was chosen as the exfoliation solvent due to it is capable of entering the...

article

Highly Branched Metal Alloy Networks with Superior Activities for the Methanol Oxidation Reaction

Xun Cui, Peng Xiao, Jing Wang, Ming Zhou, more

Angewandte Chemie International Edition > 56 > 16 > 4488 - 4493

Three‐dimensional (3D) interconnected metal alloy nanostructures possess superior catalytic performance owing to their advantageous characteristics, including improved catalytic activity, corrosion resistance, and stability. Hierarchically structured Ni‐Cu alloys composed of 3D network‐like microscopic branches with nanoscopic dendritic feelers on each branch were crafted by a facile and efficient...

article

Highly Branched Metal Alloy Networks with Superior Activities for the Methanol Oxidation Reaction

Xun Cui, Peng Xiao, Jing Wang, Ming Zhou, more

Angewandte Chemie > 129 > 16 > 4559 - 4564

article

Enhanced charge separation and oxidation kinetics of BiVO4 photoanode by double layer structure

Lin Yang, Yuli Xiong, Hongmei Dong, Huarong Peng, more

Journal of Power Sources > 2017 > 343 > C > 67-75

Monoclinic bismuth vanadate (BiVO₄) is a promising semiconductor for photoelectrochemical water splitting. Here, we developed a facile fabrication of BiVO₄ double layer photoanode on the fluorine-doped tin oxide substrate by electrodeposition. The BiVO₄ double layer photoanode is composed by a dense BiVO₄ film as the inner layer and a nanoporous BiVO₄ film as the outer layer. Compared to the BiVO₄...

article

Hydrothermal synthesis, and tailoring the growth of Ti-supported TiO2 nanotubes with thick tube walls

Mengsha Chu, Yulin Tang, Nannan Rong, Xun Cui, more

Materials & Design > 2016 > 97 > C > 257-267

This work intends to clarify the different effects of sodium salts and organic solvents on the morphology of Ti-supported TiO₂ nanomaterials. Titanates were chosen as the precursor to synthesis TiO₂ nanomaterials and the morphology controlled synthesis of titanates plays an important role in optimizing the morphology and properties of TiO₂ nanostructures. Based on our experiments, titanate nanotubes...

article

Ultrahigh Voltage Synthesis of 2D Amorphous Nickel-Cobalt Hydroxide Nanosheets on CFP for High Performance Energy Storage Device

Huarong Peng, Ming Zhou, Yanhong Li, Xun Cui, more

Electrochimica Acta > 2016 > 190 > C > 695-702

Amorphous nanomaterials have been regarded as extremely promising electrode materials for battery-like energy storage device (BESD) due to their atomic disorder, homogeneous and metastable properties, etc. Here, an amorphous NiCo layered double hydroxide (NiCo LDH) with different morphologies is synthesized for the first time by a green, economical and practicable ultrahigh voltage electrophoretic...

article

Enhancement of the photoelectrochemical performance of CuWO4 films for water splitting by hydrogen treatment

Yulin Tang, Nannan Rong, Feila Liu, Mengsha Chu, more

Applied Surface Science > 2016 > 361 > Complete > 133-140

CuWO₄ films with feature particle sizes of 100–200nm and thickness up to 700–900nm on fluorine-doped tin oxide (FTO) substrates were prepared by hydrothermal synthesis. The prepared CuWO₄ films were treated in hydrogen atmosphere at constant temperature 300°C for different annealing time and used for photoelectrochemical (PEC) water oxidation. Compared with pristine CuWO₄ film, the optimized hydrogen-treated...

article

Improved photoelectrocatalytic properties of Ti-doped BiFeO₃ films for water oxidation

Nannan Rong, Mengsha Chu, Yulin Tang, Chao Zhang, more

Journal of Materials Science > 2016 > 51 > 12 > 5712-5723

Because of the potential application in photoelectrochemical cells for water splitting, the synthesis of BiFeO₃ (BFO) is receiving increasing attention. A simple, low-cost drop-casting route was used to synthesize Ti ions doped BiFeO₃ thin films and the effects of the Ti ions doping on their crystal structure, morphology, and photoelectrocatalytic activity had been studied. X-ray diffraction results...

article

NiCo-selenide as a novel catalyst for water oxidation

Xiyu Zhao, Yang Yang, Yanhong Li, Xun Cui, more

Journal of Materials Science > 2016 > 51 > 8 > 3724-3734

The design and fabrication of sustainable and efficient electrocatalyst for water splitting are crucial for rechargeable metal-air batteries and regenerative fuel cells. In this report, a highly stable and active NiCo-selenide electrocatalyst was successfully prepared by a facile two-step solvothermal approach. In 0.1 M KOH alkaline electrolyte solution, the novel NiCo-selenide electrocatalyst afforded...

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INFONA - science communication portal

Search results for: Yunhuai Zhang

In Situ Constructing Metal–Organic Complex Interface Layer Using Biomolecule Enabling Stabilize Zn Anode

Phosphorization Engineering on Metal–Organic Frameworks for Quasi‐Solid‐State Asymmetry Supercapacitors

High Energy Capacitors Based on All Metal‐Organic Frameworks Derivatives and Solar‐Charging Station Application

Fabrication of novel CuWO₄ nanoparticles (NPs) for photocatalytic degradation of methylene blue in aqueous solution

Enhancement of Photoelectrochemical Hydrogen Evolution of P-Type Silicon Nanowires Array by Loading MoS₂

Surface engineering by a novel electrochemical activation method for the synthesis of Co3+ enriched Co(OH)2/CoOOH heterostructure for water oxidation

Mo6+ Doped BiVO4 with improved Charge Separation and Oxidation Kinetics for Photoelectrochemical Water Splitting

Ultrathin α-MnO2 Nanosheets Wrapped on Acanthosphere-like Microspheres with Highly Reversible Performance for Energy Storage

Corrigendum to “A novel high energy hybrid Li-ion capacitor with a three-dimensional hierarchical ternary nanostructure of hydrogen-treated TiO2 nanoparticles/conductive polymer/carbon nanotubes anode and an activated carbon cathode” [J. Power Sources 355 (2017) 1–7]

A novel high energy hybrid Li-ion capacitor with a three-dimensional hierarchical ternary nanostructure of hydrogen-treated TiO2 nanoparticles/conductive polymer/carbon nanotubes anode and an activated carbon cathode

Iron–doped NiCoO2 nanoplates as efficient electrocatalysts for oxygen evolution reaction

Liquid-phase exfoliation of NH4Co0.4Ni0.6PO4·H2O for energy storage device

Highly Branched Metal Alloy Networks with Superior Activities for the Methanol Oxidation Reaction

Highly Branched Metal Alloy Networks with Superior Activities for the Methanol Oxidation Reaction

Enhanced charge separation and oxidation kinetics of BiVO4 photoanode by double layer structure

Hydrothermal synthesis, and tailoring the growth of Ti-supported TiO2 nanotubes with thick tube walls

Ultrahigh Voltage Synthesis of 2D Amorphous Nickel-Cobalt Hydroxide Nanosheets on CFP for High Performance Energy Storage Device

Enhancement of the photoelectrochemical performance of CuWO4 films for water splitting by hydrogen treatment

Improved photoelectrocatalytic properties of Ti-doped BiFeO₃ films for water oxidation

NiCo-selenide as a novel catalyst for water oxidation

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