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Catalyst–Support Interaction in Polyaniline‑Supported Ni_(3)Fe Oxide to Boost Oxygen Evolution Activities for Rechargeable Zn‑Air Batteries

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Nano-Micro Letters 2025年第1期17卷 176-190页

作者： Xiaohong Zou Qian Lu Mingcong Tang Jie Wu Kouer Zhang Wenzhi Li Yunxia Hu Xiaomin Xu Xiao Zhang Zongping shao Liang An Department of Mechanical Engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and TechnologyNanjing University of Information Science and TechnologyNanjing 210044People’s Republic of China Department of Chemistry The Chinese University of Hong KongMa Lin BuildingShatinHong Kong SAR 999077People’s Republic of China WA School of Mines:Minerals Energy and Chemical Engineering(WASM‑MECE)Curtin UniversityPerthWA 6102Australia Research Institute for Advanced Manufacturing The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China Research Institute for Smart Energy The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China

Catalyst–support interaction plays a crucial role in improving the catalytic activity of oxygen evolution reaction(OER).Here we modulate the catalyst–support interaction in polyaniline-supported Ni_(3)Fe oxide(Ni_(3)Fe oxide/PANI)with a robust hetero-interface,which significantly improves oxygen evolution activities with an overpotential of 270 mV at 10 mA cm^(-2)and specific activity of 2.08 mA cm_(ECSA)^(-2)at overpotential of 300 mV,3.84-fold that of Ni_(3)Fe *** is revealed that the catalyst–support interaction between Ni_(3)Fe oxide and PANI support enhances the Ni–O covalency via the interfacial Ni–N bond,thus promoting the charge and mass transfer on Ni_(3)Fe *** the excellent activity and stability,rechargeable Zn-air batteries with optimum Ni_(3)Fe oxide/PANI are assembled,delivering a low charge voltage of 1.95 V to cycle for 400 h at 10 mA cm^(-2).The regulation of the effect of catalyst–support interaction on catalytic activity provides new possibilities for the future design of highly efficient OER catalysts.

关键词： Catalyst-support interaction Supported catalysts Heterointerface Oxygen evolution reaction Zn-air batteries

A Hydrogen Iron Flow Battery with High Current Density and Long Cyclability Enabled Through Circular Water Management

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Energy & Environmental Materials 2023年第6期6卷 173-178页

作者： Litao Yan Yuyan shao Wei Wang Pacific Northwest National Laboratory 902 Battelle BoulevardRichland WA 99354USA

The hydrogen-iron(HyFe)flow cell has great potential for long-duration energy storage by capitalizing on the advantages of both electrolyzers and flow ***,its operation at high current density(high power)and over continuous cycling testing has yet to be *** this article,we discuss our design and demonstration of a water-management strategy that supports high current and long-cycling performance of a HyFe flow *** molecules associated with the movement of protons from the iron electrode to the hydrogen electrode are sufficient to hydrate the membrane and electrode at a low current density of 100 mA cm^(-2)during the charge *** higher charge current density,more aggressive measures must be taken to counter back-diffusion driven by the acid concentration gradient between the iron and hydrogen *** water-management approach is based on water vapor feeding in the hydrogen electrode and water evaporation in the iron electrode,thus enabling high current density operation of 300 mA cm^(-2).

关键词： acid concentration gradient energy storage flow battery hydrogen longcycling performance water management

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Lithiated Nafion-garnet ceramic composite electrolyte membrane for solid-state lithium metal battery

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Journal of Energy Chemistry 2020年第7期29卷 237-247,I0008页

作者： Jing Gao Qinjun shao Jian Chen Advanced Rechargeable Battery Laboratory Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China

Single-ion conducting solid polymer electrolytes are expected to play a vital role in the realization of solid-state Li metal *** this work,a lithiated Nafion(Li-Nafion)-garnet ceramic Li6.25La3 Zr2 Al0.25O12(LLZAO)composite solid electrolyte(CSE)membrane with 30μm thickness was prepared for the first *** employing X-ray photoelectron spectroscopy and transmission electron microscope,the interaction between LLZAO and Li-Nafion was *** is found that the LLZAO interacts with the Li-Nafion to form a space charge layer at the interface between LLZAO and *** space charge layer reduces the migration barrier of Li-ions and improves the ionic conductivity of the CSE *** CSE membrane containing 10 wt%LLZAO exhibits the highest ionic conductivity of2.26×10-4 S cm-1 at 30℃among the pristine Li-Nafion membrane,the membrane containing 5 wt%,20 wt%,and 30 wt%LLZAO,*** also exhibits a high Li-ion transference number of 0.92,and a broader electrochemical window of 0-+4.8 V ***+/Li than that of 0-+4.0 V ***+/Li for the pristine Li-Nafion *** is observed that the CSE membrane not only inhibits the growth of Li dendrites but also keeps excellent electrochemical stability with the Li *** from the above merits,the solid-state LiFePO4/Li cell fabricated with the CSE membrane was practically charged and discharged at 30℃.The cell exhibits an initial reversible discharge specific capacity of 160 mAh g-1 with 97%capacity retention after 100 cycles at 0.2 C,and maintains discharge specific capacity of 126 mAh g-1 after500 cycles at 1 *** CSE membrane prepared with Li-Nafion and LLZAO is proved to be a promising solid electrolyte for advanced solid-state Li metal batteries.

关键词： Single-ion conductor Composite solid electrolyte Lithiated Nafion Garnet ceramic Solid-state Li metal battery

Solute transport characteristics of a deep soil profile in the Loess Plateau,China

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Journal of Arid Land 2018年第4期10卷 628-637页

作者： WANG Jiao shao Ming'an Key Laboratory of Ecosystems Network Observation and Modeling Institute of Geographical Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Northwest A&F UniversityYangling 712100China

Understanding solute transport behaviors of deep soil profile in the Loess Plateau is helpful for ecological construction and agricultural production improvement. In this study, solute transport processes of a deep soil profile were measured by a conservative tracer experiment using 25 undisturbed soil cores （20 cm long and 7 cm diameter for each） continuously sampled from the surface downward to the depth of 500 cm in the Loess Plateau of China. The solute transport breakthrough curves （BTCs） were analyzed in terms of the convection-dispersion equation （CDE） and the mobile-immobile model （MIM）. Average pore-water velocity and dispersion coefficient （or effective dispersion coefficient） were calculated using the CDE and MIM. Basic soil properties and water infiltration parameters were also determined to explore their influence on the solute transport parameters. Both pore-water velocity and dispersion coefficient （or effective dispersion coefficient） generally decreased with increasing depth, and the dispersivity fluctuated along the soil profile. There was a good linear correlation between log-transformed pore-water velocity and dispersion coefficient, with a slope of about 1.0 and an average dispersivity of 0.25 for the entire soil profile. Generally speaking, the soil was more homogeneous along the soil profile. Our results also show that hydrodynamic dispersion is the dominant mechanism of solute transport of loess soils in the study area.

关键词： solute transport loess soil pore-water velocity dispersion coefficient hydraulic conductivity Loess Plateau

Cr doping effect in B-site of La_(0.75)Sr_(0.25)MnO_3 on its phase stability and performance as an SOFC anode

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Rare Metals 2009年第4期28卷 361-366页

作者： ZHENG Yao RAN Ran shao Zongping State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing University of Technology Nanjing 210009 China

La0.75Sr0.25CryMn1-yO3 （LScm）（y = 0.0-0.6） composite oxides were synthesized by a complexing process of combining ethylene diamine tetraacetic acid （EDTA） and citrate. X-ray diffraction （XRD）, temperature-programmed reduction, electrical conductivity, I-V polarization, and impedance spectroscopy were conducted to investigate the Cr doping effect of La0.75Sr0.25MnO3 on its phase stability and electrochemical performance as a solid-oxide fuel cell （SOFC） anode. The chemical and structural stabilities of the oxides increased steadily with increasing Cr doping concentration, while the electrical conductivity decreased on the contrary. At y 〉 0.4, the basic perovskite structure under the anode operating condition was sustained. A cell with 0.5-ram-thick scandia-stabilized zirconia electrolyte and La0.75Sr0.25CryMn1-yO3 anode delivered a Dower density of -15 mW-cm^-2 at 850℃.

关键词： solid oxide fuel cells (SOFC) anode materials phase stability perovskite structure

First-Principles Study on Electronic and Optical Properties of Graphene-Like Boron Phosphide Sheets

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Chinese Journal of Chemical Physics 2015年第5期28卷 -页

作者： shao-feng Wang Xiao-jun Wu CAS Key Laboratory of Materials for Energy Conversion and Department of Materials Science and Engineering University of Science and Technology of China Hefei 230026 China CAS Key Laboratory of Materials for Energy Conversion and Department of Materials Science and Engineering University of Science and Technology of China Hefei 230026 ChinaSynergetic Innovation Center of Quantum Information & Quantum Physics University of Science and Technology of China Hefei 230026 ChinaSchool of Chemistry and Materials Science and Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 China

Two-dimensional semiconducting materials with moderate band gap and high carrier mobility have a wide range of applications for electronics and optoelectronics in nanoscale. On the basis of first-principles calculations, we perform a comprehensive study on the electronics and optical properties of graphene-like boron phosphide (BP) sheets. The global structure search and first-principles based molecular dynamic simulation indicate that two-dimensional BP sheet has a graphene-like global minimum structure with high stability. BPmonolayer is semiconductor with a direct band gap of 1.37 eV, which reduces with the number of layers. Moreover, the band gaps of BP sheets are insensitive to the applied uniaxial strain. The calculated mobility of electrons in BPmonolayer is as high as 106 cm2/(V·s). Lastly, the MoS2/BP van der Waals heterobilayers are investigated for photovoltaic applications, and their power conversion efficiencies are estimated to be in the range of 17.7%–19.7%. This study implies the potential applications of graphene-like BP sheets for electronic and optoelectronic devices in nanoscale.

关键词： Density functional theory BP sheet Electronic structure Optical properties

High-Efficiency(Over 10%) Parallel Tandem Dye-Sensitized Solar Cells Based on Tri-Carbon Electrodes

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Transactions of Tianjin University 2022年第5期28卷 414-422页

作者： Wu shao Wenjun Wu Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center Shanghai Key Laboratory of Functional Materials ChemistryEast China University of Science and TechnologyShanghai 200237China

Ensuring high power conversion efficiency,partially or completely replacing Pt electrodes with inexpensive materials is one of the important development directions of dye-sensitized solar cells(DSSCs).In this work,we have developed a threecomponent(MWCNTs,carbon black and graphite) carbon(tri-carbon) electrode material for DSSC devices combined with the advantages of high electron transfer kinetics of MWCNTs,plentiful catalytic sites in crystal edges of carbon black and superior electrical conductivity and catalytic activity of *** a tri-carbon electrode,a Pt electrode,and two N719-sensitized photoanodes,a parallel tandem dye-sensitized solar cells are assembled obtaining a high PCE of 10.26%(V_(OC)=0.70 V,J_(SC)=19.99 mA/cm~2,FF=73.33%).It opens up a new avenue for the development of low-cost and highperformance DSSCs.

关键词： Dye-sensitized solar cells MWCNTs Carbon black Graphite Counter electrode

Investigation of cubic Pt alloys for ammonia oxidation reaction

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Nano Research 2020年第7期13卷 1920-1927页

作者： Yat Tung Chan Kumar Siddharth Minhua shao Department of Chemical and Biological Engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina

As a promising fuel candidate,ammonia has been successtully used as anode feed in alkaline fuel ***,current technology in catalysts for ammonia electro-oxidation reaction(AOR)with respect to both cost and performance is inadequate to ensure large scale commercial application of direct ammonia fuel *** studies found that alloying Pt with different transition metals and controlling the morphology of catalysts can improve the AOR activity,and thus potentially can solve the cost ***,(100)-terminated Pt-M nanocubes(M=3d-transition metals Fe,Co,Ni,Zn)are synthesized via wet-chemistry method and their catalytic activities toward AOR are *** addition of Fe,Co,Ni and Zn elements can enhance the AOR activity due to decrease in oxophilicity of platinum and bifunctional ***-Zn exhibits the maximum mass activity and specific ativity with values of 0.41 A/mgpt and 169 mA/cm2 that are 1.6 and 1.8 times higher than Pt nanocubes,***-Fe,Pt-Co and PI-Ni nanocubes also ilustrate higher mass and specific activities compared to Pt nanocubes.

关键词： ammonia oxidation reaction electrocatalysts Pt-3d transition metal nanocubes OH adsorption

Factors controlling deep-profile soil organic carbon and water storage following Robinia pseudoacacia afforestation of the Loess Plateau in China

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Forest Ecosystems 2022年第6期9卷 838-851页

作者： Xi Yang Tongchuan Li Ming'an shao State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Northwest A&F UniversityYangling712100China College of Natural Resources and Environment Northwest A&F UniversityYangling712100China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing100190China

Background:Afforestation is a common and effective approach used for the restoration of degraded ecosystems *** China,Robinia pseudoacacia(RP)is among the main non-native tree species and has been widely planted in revegetation of the Loess ***,owing to uncertainties regarding soil water consumption and carbon sequestration,it is necessary to assess the suitability and sustainability of *** in *** this study,we aimed to analyse the dynamic effects of *** forest on soil carbon storage(SCS)and soil water storage(SWS).Specifically,we investigated the association between soil water content(SWC)and soil organic carbon(SOC)and underlying factors in the 0-500-cm profile of a 10-to 50-year-old ***:The results obtained indicated that the dynamics of SWS and SCS on this time scale could be divided into an initial reduction phase(the initial 20 years after afforestation)and subsequent recovery(20-50 years after afforestation).Compared with in the abandoned land(AL),the net accumulation of SCS in *** forest was 2.51 Mg·ha^(-1)at 50 years after afforestation,whereas there was a 398.76-mm deficit in ***,the natural succession of *** forest has contributed to the continuous change in stand structure(*** cover(VC),understory vegetation coverage(UVC),and litter biomass(LB)).Conclusions:These findings indicate that vegetation restoration increases carbon sequestration while causing soil water ***,stand density(SD)was established to make a predominant contribution to the dynamics of SWS and SCS via its effects in altering vegetation,soil,and litter ***,high-density plantation forests in the Loess Plateau area should be appropriately thinned to reduce the density of forest stands on the basis of soil erosion control and wind and sand fixation,so as to increase carbon sink with lower water consumption,thus realizing the synergistic

关键词： Afforestation Robinia pseudoacacia Soil organic carbon Soil water Coupling interaction