Weiqi Zhang

Weiqi Zhang
Wageningen University & Research | WUR

About

152
Publications
11,621
Reads
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2,750
Citations
Citations since 2016
112 Research Items
1785 Citations
20162017201820192020202120220100200300
20162017201820192020202120220100200300
20162017201820192020202120220100200300
20162017201820192020202120220100200300
Introduction
Skills and Expertise

Publications

Publications (152)
Article
The catalyst layer (CL) is the only electrochemical reaction site in proton exchange membrane fuel cells (PEMFCs), decisive in their performance. Herein, a mild and simplified strategy is implemented into the in-situ growth of Pt–Pd alloy catalysts on the gas diffusion layer (GDL) as the CLs for PEMFCs. Pt/C is used as the nucleation site to assist...
Article
Full-text available
With emerging demand of potable and wearable electronic devices, reliable and flexible energy suppliers are inevitable. Polymer electrolyte membrane fuel cells (PEMFCs) attract great attention due to high energy density and sustainability. However, non-bendability limits their application in flexible electronic devices. To make PEMFCs adaptable and...
Article
Direct methanol fuel cell (DMFC) and direct ammonia fuel cell (DAFC) have attracted wide attention due to high energy density, environment friendliness, easy availability and transportation of liquid fuel. However, the high cost and low durability of platinum (Pt) impede the large-scale application. Herein, we report a simple and effective approach...
Article
Improving cell performance is the most demanded task in direct methanol fuel cell (DMFC) research, although this fuel cell has several intrinsic features like high energy density, moderate operating temperature and environmentally friendly operation. The catalyst layer (CL) is the site of electrochemical reactions directly affecting the cell perfor...
Article
The non-aqueous redox flow battery (NARFB) has received extensive attentions due to its unique advantages, e.g. wide electrochemical window and potentially high energy density. However, the low performance of NARFB still hinders its wide application. Our previous researches have shown that the exertion of external fields is a promising solution for...
Article
Herein, a multi-skeletal PtPdNi nano-dendrites (NDs) was successfully formed by a simple one-pot method with structure directing agent. The modification of Pt electronic structure and their interaction due to compressive strain were explored using benchmark characterization techniques, which showed that the PtPdNi NDs possess Pt-enriched surface, c...
Patent
Full-text available
FUEL CELL ELECTRODE WITH CATALYSTS GROWN IN SITU ON ORDERED STRUCTURE MICROPOROUS LAYER AND THE METHOD FOR PREPARING MEMBRANE ELECTRODE ASSEMBLY
Article
Catalyst layer (CL) is the key factor of affecting the performance of proton exchange membrane fuel cells (PEMFCs). Herein, a facile and universal strategy is proposed to in situ grow Pt nanowires (Pt-NWs) on a dual microporous layer (MPL) as a novel CL for PEMFCs application. The dual MPL is composed of hydrophobic layer and hydrophilic layer, whe...
Article
Full-text available
A syringe‐like type III secretion system (T3SS) plays essential roles in the pathogenicity of Ralstonia solanacearum, which is a causal agent of bacterial wilt disease on many plant species worldwide. Here, we characterized functional roles of a CysB regulator (RSc2427) in R. solanacearum OE1‐1 that was demonstrated to be responsible for cysteine s...
Article
Full-text available
Direct methanol fuel cells (DMFCs) offer high energy density, simple liquid fuel storage, and the ability to operate at ambient temperature. They may be used in a variety of portable mobile power supplies, small civilian power supplies, and automotive power supplies. However, in the process of electrochemical reaction inside a DMFC, because the rea...
Article
Full-text available
The non-aqueous redox flow battery (NARFB) has received extensive attention in large-scale energy storage systems, but its electrochemical performance needs to be improved. In this study, electrode modification was performed by depositing non-noble metal chromium oxide on the surface of graphite felt by impregnation combined with high-temperature c...
Article
The flow batteries with deep eutectic solvent (DES) electrolyte have the advantages of wide electrochemical window, low cost, and simple preparation of electrolyte. However, the drawbacks of high viscosity and low diffusion coefficient for ions in DES are the main factors hindering mass transfer in DES flow batteries. This paper reports the influen...
Article
Background High cost is a main barrier of commercialization for high temperature polymer electrolyte membrane fuel cell (HT-PEMFC). Thus, enhancing the efficiency of platinum (Pt) utilization and improving the performance of HT-PEMFC is expected to promote its commercialization. Methods A novel cathode with dual catalyst layer (DCL) structure is d...
Article
Pt-based alloy nanomaterials with nanodendrites (NDs) structures are efficient electrocatalysts for methanol oxidation reaction (MOR), however their durability is greatly limited by the issue of transition metals dissolution. In this work, a facile trace Ir-doping strategy was proposed to fabricate Ir-PtZn and Ir-PtCu alloy NDs catalysts in aqueous...
Article
The wide application of non-aqueous redox flow battery (NARFB) is restricted by its lower performance. Adding some metal ion additives to the electrolyte is a possible solution. In this study, the influence of Sb3+ ions on the electrochemical performance of non-aqueous redox flow batteries (NARFBs) was experimentally studied. The results showed tha...
Article
Developing self-humidifying membrane electrode assembly (MEA) is of great significance for the practical use of proton exchange membrane fuel cell (PEMFC). In this work, a phosphoric acid (PA)-loaded Schiff base networks (SNW)-type covalent organic framework (COF) is proposed as the anode catalyst layer (CL) additive to enhance the PEMFC performanc...
Article
A novel membrane electrode structure is conceived and prepared in this work, where a graphene-contained layer is constructed between anode catalyst layer and membrane, also the material composition in this layer is optimized to improve the performance of a direct methanol fuel cell (DMFC) with high-concentration fuel. The polarization test shows th...
Article
Full-text available
Highly durable and active CeO2 on biochar carbon (CeO2/BC) derived from Spirulina platensis microalgae and synthesized by simple one-pot hydrothermal treatment and further activated through pyrolysis approach. A spindle-shaped morphology of CeO2 with predominant (111) facet was evidently observed from X-ray diffraction patterns and electron microsc...
Patent
A method for in-situ growing catalyst on ordered structure microporous layer to prepare electrode and MEA
Article
Full-text available
Proton exchange membrane fuel cells (PEMFCs) are considered one of the most promising technologies for efficient power generation in the 21st century. However, several challenges for the PEMFC power technology are associated with low operating temperature, such as complex water management and strict fuel purification. PEMFC operating at high temper...
Article
Full-text available
Twenty-three atmospheric volatile halogenated hydrocarbons (VHHs) were detected in a typical urban area of Beijing, China from 24 August to 4 September, 2012. The mean and range in daily mass concentrations of the 23 VHHs were 30.53 and 13.45–76.33 µg/m3, respectively. Seven of those VHHs were controlled ozone-depleting substances in China, with a...
Article
Full-text available
The Pt-Fe2O3 nanoparticles embedded over N, P-doped carbon (Pt-Fe2O3/NPC) was successfully synthesized by chemical reduction method demonstrating an enhanced electrocatalytic efficacy in alkaline media towards oxygen reduction (ORR) reaction. The surface morphology of Pt-Fe2O3/NPC has been characterized by electron microscopy scanning, X-ray diffra...
Article
In this work, the trimetallic PtPdCr nanoparticles with low platinum loading (~5 wt%) supported on Vulcan carbon (PtPdCr/C) were synthesized through a facile two-step co-reduction method and showed superior methanol oxidation activity. The particle size distribution, morphology and elemental composition of the PtPdCr/C were investigated by transmis...
Article
Pt-based catalysts are still most attractive and could be the major driving force for facile electrochemical reactions in direct methanol fuel cells (DMFCs). In this work, a Pt3Mn nanowire network structures (NWNs) catalyst was successfully synthesized by a soft template (CTAB) method. The morphology and elemental composition of the Pt3Mn NWNs were...
Preprint
In this study, a simple and environmentally amicable synthesis procedure for support-free silver–rhodium (Ag–Rh) bimetallic network-like nanoalloy was used to catalyze an oxygen reduction reaction in an alkaline medium. The support-free network-like morphology of Ag–Rh nanoalloy exhibits a higher electrochemical surface area (ECSA) of 65.6 m²/g tha...
Article
Full-text available
In this study, a simple and environmentally amicable synthesis procedure for support-free silver–rhodium (Ag–Rh) bimetallic network-like nanoalloy was used to catalyze an oxygen reduction reaction in an alkaline medium. The support-free network-like morphology of Ag–Rh nanoalloy exhibits a higher electrochemical surface area (ECSA) of 65.6 m2/g tha...
Article
The durability issue is a main challenge for high temperature polymer electrolyte membrane fuel cell (HT-PEMFC). In this study, the electrocatalyst of graphitic carbon nitride (gC3N4) nanosheets supported Pt nanoparticles (NPs) is prepared for enhancing the durability of Pt-based electrocatalyst in HT-PEMFC. Pt NPs are homogeneously dispersed on gC...
Article
Atmospheric volatile organic compounds (VOCs) were observed by an on-line gas chromatography-flame ionization detector monitoring system from November 2016 to August 2017 in Beijing. The average concentrations were winter (40.27 ± 25.25 μg/m³) > autumn (34.25 ± 19.90 µg/m³) > summer (32.53 ± 17.39 µg/m³) > spring (24.72 ± 17.22 µg/m³). Although ben...
Article
In order to promote the applicability of redox flow batteries (RFBs), the deep eutectic solvents (DESs) have been proposed as a better choice for non-aqueous electrolyte of RFBs. The reactive transfer process within the RFB plays a key role in determining the cell performance. In this work, cyclic voltammetry experiment is conducted to obtain the r...
Article
The vanadium redox flow battery (VRFB) is a promising energy-storage technology for the power supply from intermittent renewable energy sources. An understanding of the characteristics of coupled mass transport and electrochemical reactions in a VRFB is of great importance for increasing the storage capacity and improving the efficiency. However, t...
Article
Appearance based loop closure detection plays an important role in visual simultaneous localization and mapping systems (vSLAM) by measuring similarity of the places and checking loops to reduce the accumulated error. Traditional loop closure methods execute place recognition by image retrieval with Bag-of-Word model, which forms an orderless repre...
Article
Full-text available
Recent work in distance metric learning has significantly improved the performance in k-nearest neighbor classification. However, the learned metric with these methods cannot adapt to the support vector machines (SVM), which are amongst the most popular classification algorithms using distance metrics to compare samples. In order to investigate the...
Article
Full-text available
The conventional electrodes of direct methanol fuel cells (DMFCs) usually encounter a problem that the catalysts sink into the diffusion layer after a period of operation, causing a lowered catalyst utilization and degraded cell performance. Aiming to alleviate this problem, in this work a novel anode electrode structure is proposed, in which a mic...
Article
Full-text available
Ralstonia solanacearum can metabolize ferulic acid (FA) and salicylic acid (SA), two representative phenolic acids, to protect it from toxicity of phenolic acids. Here, we genetically demonstrated a novel phenolic acid decarboxylase regulator (PadR)‐like regulator PrhP as a positive regulator on detoxification of SA and FA in R. solanacearum. Altho...
Article
Full-text available
Direct monocular Simultaneous Localization and Mapping (SLAM) methods, for which the image intensity are used for tracking and mapping instead of sparse feature points, have gained in popularity in recent years. However, feature-based methods usually have more accurate camera localization results than most direct methods, though direct methods can...
Article
Deep eutectic solvents (DESs) as temperature sensitive non-aqueous electrolytes have been proposed to elevate the energy density of redox flow batteries (RFBs). In this paper, a pore scale multiple-relaxation-time (MRT) lattice Boltzmann (LB) model is established to predict the electrolyte flow, species/charge transfer behaviors and electrochemical...
Article
GDEs with low Pt loadings are developed for HT-PEMFC. • Combining low-Pt-content catalyst and MPL-free structure is a way to reduce Pt use. • The Pt loading can be lowered to 0.2 mg cm −2 and still with satisfactory performance. • Ultra-low Pt loading can be expected from this strategy by enhancing CL quality. A R T I C L E I N F O Keywords: High t...
Article
Full-text available
Ex-situ electrochemical characterization techniques could significantly alter or misrepresent the materials of high temperature polymer electrolyte membrane fuel cell (HT-PEMFC) to the point where they are not reflective of their conditions during operation, resulting in difficulties in obtaining realistic fuel cell durability. To minimize this dis...
Article
The global energy crisis is making energy storage as a critical technology in the use of renewable energy sources, such as solar and wind power, which have the intermittent nature. Among emerging technologies, the redox flow battery (RFB) is a promising candidate for large-scale stationary storage applications due to its unique features, including...
Article
Inspired by cisplatin’s deactivation by glutathione (GSH) in cancer, GSH responsive nanogel loaded with doxorubicin (Dox) was prepared using hyaluronan as a matrix and cisplatin as a crosslinker. The elevated...
Article
With environmental change and increased human activity, wild red deer (Cervus elaphus xanthopygus) populations and habitat area continue to decrease. Red deer is a main prey species of Amur tiger (Panthera tigris altaica). Factors affecting red deer winter home range in the Wanda montains of northeast China are not well understood. In this study, w...
Chapter
The recent rise of container systems like Docker has created a lot of excitement in data center. Its ability to package, transfer and run application code across many different environments enables new levels of fluidity in how we manage applications. However, container’s easy-to-manage and second-boot features increase the degree of network disper...
Chapter
Astonishing progress has been made in direct monocular SLAMs in the last few years. However, most direct methods, such as large-scale direct monocular SLAM (LSD-SLAM), usually have lower camera localization accuracy than feature-based methods. To tackle this issue, this paper suggests a novel LSD-SLAM model, i.e., GCP-SLAM, by incorporating with le...