A5059197874- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Electrocatalysts for Energy Conversion
- Advanced Battery Technologies Research
- Supercapacitor Materials and Fabrication
- Advanced battery technologies research
- Fuel Cells and Related Materials
- Electrochemical Analysis and Applications
- Catalytic Processes in Materials Science
- Conducting polymers and applications
- Advancements in Solid Oxide Fuel Cells
- Catalysis and Oxidation Reactions
- Extraction and Separation Processes
- Membrane-based Ion Separation Techniques
- Transition Metal Oxide Nanomaterials
- Semiconductor materials and devices
- Gas Sensing Nanomaterials and Sensors
- Ionic liquids properties and applications
- Electrochemical sensors and biosensors
- Advanced Sensor and Energy Harvesting Materials
- Polyoxometalates: Synthesis and Applications
- Graphene research and applications
- Thermal Expansion and Ionic Conductivity
- Nanoporous metals and alloys
- Analytical Chemistry and Sensors
Tsinghua University
2015-2024
Xiamen University
2024
Tsinghua–Berkeley Shenzhen Institute
2020
University Town of Shenzhen
2010-2019
Technical University of Munich
2018
Beijing Institute of Technology
2007
Institute of Physics
2006
Chinese Academy of Sciences
2006
The crossover of vanadium ions through proton-exchange membranes such as those Nafion is the chief reason that results in low energy efficiency and high self-discharge rate redox flow batteries (VRB). With respect to applicability, ideal membrane used VRB should possess simultaneously proton conductivity ion permeability. Here, we report a novel approach using polyelectrolyte layer-by-layer self-assembly technique fabricate barrier layer onto surface by alternate adsorption polycation...
Randomly dispersed GO nanosheets in SPEEK can effectively block the crossover of vanadium ions, resulting superior cyclability VRFB.
To improve the electrochemical performance of graphite felt (GF) electrodes in vanadium flow batteries (VFBs), we synthesize a series ZrO2-modified GF (ZrO2/GF) with varying ZrO2 contents via facile immersion-precipitation approach. It is found that uniform immobilization nanoparticles on not only significantly promotes accessibility electrolyte, but also provides more active sites for redox reactions, thereby resulting better activity and reversibility toward VO2+/VO2+ V2+/V3+ reactions as...
Abstract The low Coulombic efficiency during cycling hinders the application of Cobalt-free lithium-rich materials in lithium-ion batteries. Here we demonstrated that dissolution iron, rather than traditionally acknowledged manganese, is mainly responsible for iron-substituted cobalt-free material. Besides, presented an approach to inhibit transition metal ions by using concentrated electrolytes. We found cathode electrolyte interphase (CEI) layer formed a uniform and robust LiF-rich CEI,...
Nafion membranes are now the most widely used for long-life vanadium flow batteries (VFBs) because of their extremely high chemical stability. Today, type membrane that should be selected and how to pretreat these have become critical issues, which directly affects performance cost VFBs. In this work, we chose 115 investigate effect pretreatment process (as received, wet, boiled, boiled dried) on The relationship between nanostructure transport properties is elucidated by wide-angle X-ray...
Numerous studies have shown flexible electronics play important roles in health management. The way of power supply is always an essential factor devices and self-powered ones are very attractive because the fabrication easiness, usage comfort aesthetics system. In this work, based on metal-air redox reaction, which usually used designing batteries, we design a chemoelectric humidity sensor where silk fibroin (SF) LiBr gel matrix containing parallel aligned graphene oxide (GO) flakes serve...
The low ionic conductivities of aprotic electrolytes hinder the development extreme fast charging technologies and applications at temperatures for lithium-ion batteries (LIBs). Herein, we present an electrolyte with LiFSI in acetone (DMK). In DMK electrolytes, solvation number is three, solvent-separated ion pairs (SSIPs) are dominant structure, which largely different from other linear where salts primarily exist as contact (CIPs). With incompact structures due to weak ability Li+,...
Nearly monodisperse flowerlike CeO2 microspheres were synthesized via a simultaneous polymerization−precipitate reaction, metamorphic reconstruction, and mineralization under hydrothermal condition as well subsequent calcination. The obtained microsphere consists of 20−30 nm thick nanosheets petals. It has an open three-dimensional (3D) porous hollow structure possesses high surface area, large pore volume, marked stability. can be doped easily after synthesis, the initial 3D texture is...
Die perfekte Kombination: RuO2⋅x H2O für das Abgeben und Aufnehmen von Protonen Elektronen sowie Kohlenstoffnanoröhren (CNT), um den Verlust an Elektronenleitfähigkeit wegen der RuO2-Bedeckung zu kompensieren, die Elektrodenmikrostruktur verbessern Elektrodenwiderstand verringern. Das Ergebnis: ein Katalysator, sich hervorragend zur direkten Elektrooxidation Methanol eignet.
The preparation and physical characterization of a poly(vinylidene fluoride)-graft-poly(styrene sulfonic acid) (PVDF-g-PSSA) membrane prepared by solution-grafting method were described. These membranes exhibited high conductivity with value 3.22 × 10-2 S/cm at 30 °C. ICP studies revealed that the PVDF-g-PSSA showed dramatically lower vanadium ion permeability compared to Nafion 117. Trivalent ions had highest through all these in contrast pentavalent lowest. VRB low-cost higher performance...