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Three-Phase Heterojunction NiMo-Based Nano-Needle for Water Splitting at Industrial Alkaline Condition

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Nano-Micro Letters 2022年第1期14卷 325-339页

作者： guangfu qian Jinli Chen Tianqi Yu Jiacheng Liu Lin Luo Shibin Yin College of Chemistry and Chemical Engineering State Key Laboratory of Processing for Non-Ferrous Metal and Featured MaterialsGuangxi University100 Daxue RoadNanning 530004People’s Republic of China

Constructing heterojunction is an effective strategy to develop high-performance non-preciousmetal-based catalysts for electrochemical water splitting(WS).Herein,we design and prepare an N-doped-carbon-encapsulated Ni/MoO_(2) nano-needle with three-phase heterojunction(Ni/MoO_(2)@CN)for accelerating the WS under industrial alkaline condition.Density functional theory calculations reveal that the electrons are redistributed at the three-phase heterojunction interface,which optimizes the adsorption energy of H-and O-containing intermediates to obtain the best ΔG_(H*) for hydrogen evolution reaction(HER)and decrease the ΔG value of ratedetermining step for oxygen evolution reaction(OER),thus enhancing the HER/OER catalytic activity.Electrochemical results confirm that Ni/MoO_(2)@CN exhibits good activity for HER(ƞ_(-10)=33 mV,ƞ_(-1000)=267 mV)and OER(ƞ_(10)=250 mV,ƞ_(1000)=420 mV).It shows a low potential of 1.86 V at 1000 mA cm^(−2) for WS in 6.0 M KOH solution at 60℃ and can steadily operate for 330 h.This good HER/OER performance can be attributed to the three-phase heterojunction with high intrinsic activity and the self-supporting nano-needle with more active sites,faster mass diffusion,and bubbles release.This work provides a unique idea for designing high efficiency catalytic materials for WS.

关键词： Three-phase heterojunction Interfacial electronic redistribution Catalyst Large current density Water splitting

Coupling interface engineering with electronic interaction toward high-efficiency H_(2) evolution in pH-universal electrolytes

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Journal of Energy Chemistry 2023年第5期80卷 535-541,I0012页

作者： Jinli Chen Tianqi Yu Zhixiang Zhai guangfu qian Shibin Yin Guangxi Key Laboratory of Electrochemical Energy Materials College of Chemistry and Chemical EngineeringSchool of Physical Science and TechnologyGuangxi UniversityNanning 530004GuangxiChina

Herein,the merits of heterojunction,CeO_(2),and W are employed to design and prepare the PtCoW@CeO_(2)heterojunction catalyst,which can accelerate water dissociation and improve the desorption of OHad,displaying efficient hydrogen evolution reaction(HER)performance in pH-universal conditions.Density functional theory calculation results reveal that the electronic structure of Pt is regulated by CeO_(2)and W,which tunes the Pt-Hadbond strength to boost HER intrinsic activity.Consequently,electrochemical results display that it has low potentials of-26,-25,and-23 mV at-10 mA cm^(-2)in alkaline,neutral,and acidic solutions,respectively,and it can stably cycle for 50,000 cycles.Thus,this work provides the guidance for developing high-performance Pt-based catalysts in pH-universal environments.

关键词： Heterojunction Heteroatom-doping Water dissociation pH-universal Hydrogen evolution reaction

Strong electronic coupling of CoNi and N-doped-carbon for efficient urea-assisted H2 production at a large current density

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Carbon Energy 2023年第12期5卷 187-199页

作者： guangfu qian Jinli Chen Wenjie Jiang Tianqi Yu Kexin Tan Shibin Yin Guangxi Key Laboratory of Electrochemical Energy Materials College of Chemistry and Chemical EngineeringCollege of Light Industry and Food EngineeringGuangxi UniversityNanningChina

Exploiting efficient urea oxidation reaction(UOR)and hydrogen evolution reaction(HER)catalysts are significant for energy-saving H2 production through urea-assisted water electrolysis,but it is still challenging.Herein,carbon-encapsulated CoNi coupled with CoNiMoO(CoNi@CN-CoNiMoO)is prepared by solvothermal method and calcination to enhance the activity/stability of urea-assisted water electrolysis at large current density.It exhibits good activity for UOR(E10/1,000=1.29/1.40 V)and HER(E-10/-1000=-45/-245 mV)in 1.0 M KOH+0.5 M urea solution.For the UOR||HER system,CoNi@CN-CoNiMoO only needs 1.58 V at 500 mA cm-2 and shows good stability.Density functional theory calculation suggests that the strong electronic interaction at the interface between NiCo alloy and N-doping-carbon layers can optimize the adsorption/desorption energy of UOR/HER intermediates and accelerate the water dissociation,which can expedite urea decomposition and Volmer step,thus increasing the UOR and HER activity,respectively.This work provides a new solution to design UOR/HER catalysts for H2 production through urea-assisted water electrolysis.

关键词： carbon-encapsulated structure catalyst hydrogen production large current density urea-assisted water electrolysis

N‑Doped Graphene‑Decorated NiCo Alloy Coupled with Mesoporous NiCoMoO Nano‑sheet Heterojunction for Enhanced Water Electrolysis Activity at High Current Density

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Nano-Micro Letters 2021年第5期13卷 77-89页

作者： guangfu qian Jinli Chen Tianqi Yu Lin Luo Shibin Yin College of Chemistry and Chemical Engineering MOE Key Laboratory of New Processing Technology for Nonferrous Metals and MaterialsState Key Laboratory of Processing for Non‑Ferrous Metal and Featured MaterialsGuangxi University100 Daxue RoadNanning 530004P.R.China

Developing highly effective and stable non-noble metalbased bifunctional catalyst working at high current density is an urgent issue for water electrolysis(WE).Herein,we prepare the N-doped graphene-decorated NiCo alloy coupled with mesoporous NiCoMoO nano-sheet grown on 3D nickel foam(NiCo@C-NiCoMoO/NF)for water splitting.NiCo@C-NiCoMoO/NF exhibits outstanding activity with low overpotentials for hydrogen and oxygen evolution reaction(HER:39/266 mV;OER:260/390 mV)at±10 and±1000 mA cm^(−2).More importantly,in 6.0 M KOH solution at 60℃ for WE,it only requires 1.90 V to reach 1000 mA cm−2 and shows excellent stability for 43 h,exhibiting the potential for actual application.The good performance can be assigned to N-doped graphene-decorated NiCo alloy and mesoporous NiCoMoO nano-sheet,which not only increase the intrinsic activity and expose abundant catalytic activity sites,but also enhance its chemical and mechanical stability.This work thus could provide a promising material for industrial hydrogen production.

关键词： N-doped graphene-decorated NiCo alloy Catalyst Mesoporous nano-sheet Water electrolysis High current density

Highly active bifunctional catalyst: Constructing FeWO_(4)-WO_(3) heterostructure for water and hydrazine oxidation at large current density

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Nano Research 2021年第11期14卷 4356-4361页

作者： Fang Shen Zhenglin Wang Yamei Wang guangfu qian Miaojing Pan Lin Luo Guoning Chen Hailang Wei Shibin Yin College of Chemistry and Chemical Engineering Key Laboratory of New Processing Technology for Nonferrous Metals and MaterialsState Key Laboratory of Processing for Non-Ferrous Metal and Featured MaterialsGuangxi UniversityNanning530004China Guangxi Bossco Environmental Protection Technology Co. Ltd12 Kexing RoadNanning530007China

Developing high performance anode catalysts for oxygen evolution reaction (OER) and hydrazine oxidation reaction (HzOR) at large current density is an efficient pathway to produce hydrogen. Herein, we synthesize a FeWO_(4)-WO_(3) heterostructure catalyst growing on nickel foam (FeWO_(4)-WO_(3)/NF) by a combination of hydrothermal and calcination method. It shows good catalytic activity with ultralow potentials for OER (ζ_(10) = 1.43 V, ζ_(1.000) = 1.56 V) and HzOR (ζ_(10) = −0.034 V, ζ_(1.000) = 0.164 V). Moreover, there is little performance degradation after being tested for _(10)0 h at 1,000 (OER) and _(10)0 (HzOR) mA·cm−2, indicating good stability. The superior performance could be attributed to the wolframite structure and heterostructure: The former provides a high electrical conductivity to ensure the electronic transfer capability, and the later induces interfacial electron redistribution to enhance the intrinsic activity and stability. The work offers a brand-new way to prepare good performance catalysts for OER and HzOR, especially at large current density.

关键词： catalyst heterostructure large current density oxygen evolution reaction hydrazine oxidation reaction

Enhancement of oxygen reduction activity and stability via introducing acid-resistant refractory Mo and regulating the near-surface Pt content

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Journal of Energy Chemistry 2020年第12期29卷 246-252页

作者： Shouquan Feng Jiajia Lu Lin Luo guangfu qian Jinli Chen Hanna SAbbo Salam JJTitinchi Shibin Yin College of Chemistry and Chemical Enginering.School of Physical Science and Technology.Key Laboratory of New Processing Technology for Nonferrous Metals and Materials State Key Laboratory of Processing for Non Ferrous Metal and Featured MaterialsGuangxi UniversityNanning 530004.GuangxiChina Department of Chemitry University of the Western Cape7535 Cape TownSouth Africa

Although Pt Ni catalyst possesses good oxygen reduction activity, its poor stability is the main obstacle for the commercialization of proton exchange membrane fuel cells(PEMFCs). In this work, we introduce the acid-resistant refractory Mo to enhance the structure stability and modify the electronic structure of Pt in the prepared PtNi catalyst, improving the catalytic activity for oxygen reduction reaction(ORR). In addition, near-surface Pt content in the nanoparticle is also optimized to balance the ORR activity and stability. The electrochemical results show that the alloy formed by Mo and Pt Ni is obviously more stable than the PtNi alloy alone, because the acid-resistant Mo and its oxides effectively prevent the dissolution of Pt. Especially, the Pt3 Ni3 MoN/C exhibits the optimal ORR catalytic performance in O2-saturated 0.1 mol L^(-1) HClO4 aqueous solutions, with mass activity(MA) of 900 m A mg^(-1) Pt at 0.90 V vs. RHE, which is 3.75 times enhancement compared with the commercial Pt/C(240 mA mg^(-1) Pt). After 30 k accelerated durability tests, its MA(690 m A mg^(-1) Pt) is still 2.88 times higher than the pristine Pt/C. This study thus provides a valuable method to design stable ORR catalysts with high efficiency and has great significance for the commercialization of PEMFCs.

关键词： Oxygen reduction reaction Surface platinum content regulate Ternary alloy catalyst Activity Stability

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试论杨匏安的廉洁品质

广州社会主义学院学报 2019年第4期17卷 83-88页

作者：钱广福中共三大会址纪念馆

杨匏安是五四时期华南地区最早的马克思主义传播者,中国共产党早期优秀理论家和革命活动家。杨匏安经历过生活的窘迫,第一次国共合作期间也曾任国民党中央组织部秘书、部长、国民党中央常委、国民党广东省党部常委兼组织部长等职务,薪... 详细信息

杨匏安是五四时期华南地区最早的马克思主义传播者,中国共产党早期优秀理论家和革命活动家。杨匏安经历过生活的窘迫,第一次国共合作期间也曾任国民党中央组织部秘书、部长、国民党中央常委、国民党广东省党部常委兼组织部长等职务,薪俸优厚。但杨匏安将薪水绝大多数上交党组织,自己毫无积蓄。杨匏安牺牲后,有两个子女因病无钱医治而夭折。通过挖掘杨匏安淡泊名利、严于律己、廉洁奉公的事迹,为当今廉洁教育提供理论素材。

关键词：杨匏安淡泊名利严于律己廉洁奉公

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试论国立西南大学的筹建

兰台世界 2020年第1期 129-132页

作者：钱广福中共三大会址纪念馆

民国肇建,百废待兴,培养人才成为共和要务。1919年,广东军政府根据陈炯明提议,决定在广东筹建西南大学,次年2月,广东军政府通过西南大学大纲等文件,后因种种客观因素,西南大学最终未能如期建立。但其作为民国时期筹建的国立大学,所设计... 详细信息

民国肇建,百废待兴,培养人才成为共和要务。1919年,广东军政府根据陈炯明提议,决定在广东筹建西南大学,次年2月,广东军政府通过西南大学大纲等文件,后因种种客观因素,西南大学最终未能如期建立。但其作为民国时期筹建的国立大学,所设计的西南大学董事会、评议会、各科教员会等制度,为后来成立的高校提供了有益的借鉴。

关键词：民国西南大学筹建广东军政府

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广州农民运动讲习所与红船精神

广州社会主义学院学报 2019年第1期17卷 92-96页

作者：钱广福毛泽东同志主办农民运动讲习所旧址纪念馆

广州农民运动讲习所是第一次国共合作期间,以国民党的名义,由中国共产党人开办的一所培养农民运动干部的学校。广州农民运动讲习所的组织、教学、社会实践,体现了共产党人的首创精神,教员和学员坚定理想、百折不挠的奋斗精神,推动了中... 详细信息

广州农民运动讲习所是第一次国共合作期间,以国民党的名义,由中国共产党人开办的一所培养农民运动干部的学校。广州农民运动讲习所的组织、教学、社会实践,体现了共产党人的首创精神,教员和学员坚定理想、百折不挠的奋斗精神,推动了中国革命的发展,教员和学员立党为公、忠诚为民的奉献精神,体现了中国共产党全心全意为人民服务的宗旨。

关键词：广州农民运动讲习所红船精神中国共产党