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Elevating kinetics of passivated Fe anodes with NH_(4)Cl regulator:Toward low-cost,long-cyclic and green cathode-free Fe-ion aqueous batteries

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Nano Research 2022年第4期15卷 3187-3194页

作者： Shibo Chai Jianhui Zhu Jian Jiang chang ming li School of Physical Science and Technology Southwest UniversityNo.2 Tiansheng RoadBeiBei DistrictChongqing 400715China School of Materials and Energy and Chongqing Key Lab for Advanced Materials and Clean Energies of TechnologiesSouthwest UniversityNo.2 Tiansheng RoadBeiBei DistrictChongqing 400715China Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province Key Laboratory of Functional Materials and Photoelectrochemistry of HaikouCollege of Chemistry and Chemical EngineeringHainan Normal UniversityHaikou 571158China

The environment benignity and battery cost are major concerns for grid-scale energy storage *** emerging dendrite-free Fe-ion aqueous batteries are promising due to the rich natural abundance,low cost and non-toxicity for Fe ***,serious passivation reactions on Fe anodes and poor long-term cyclability for matched cathodes still stand in the way for their practical *** settle above constraints,we herein use NH_(4)Cl as the electrolyte regulator to elevate the reaction kinetics of passivated Fe anodes,and also propose a special cathode-free design to prolong the cells lifetime over 1,000 *** added NH_(4)Cl can erode/break inert passivation layers and strengthen the ion conductivity of electrolytes,facilitating the reversible Fe plating/stripping and Fe^(2+)*** highly puffed nano carbon foams function as current collectors and actives anchoring hosts,enabling expedite Fe^(2+)adsorption/desorption,FeII/FeIII redox conversions and FeIII *** configured rocking-chair Fe-ion cells have good environmental benignity and decent energy-storage behaviors,including high reactivity/reversibility,outstanding cyclic stability and far enhanced operation *** economical,long-cyclic and green cathode-free Fe-ion batteries may hold great potential in near-future energy-storage power stations.

关键词： elevated kinetics passivated Fe anodes NH_(4)Cl regulator cathode-free design Fe-ion batteries

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Mechanisms of water oxidation on heterogeneous catalyst surfaces

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Nano Research 2021年第10期14卷 3446-3457页

作者： Xiaogang Yang Yuanxing Wang chang ming li Dunwei Wang Institute of Materials Science and Devices School of Materials Science and EngineeringSuzhou University of Science and TechnologySuzhou 215011China Department of Chemistry Boston CollegeMerkert Chemistry CenterMA 02467USA Institute of Clean Energy&Advanced Materials Southwest UniversityChongqing 400715China

Water oxidation,an essential step in photosynthesis,has attracted intense research *** the reaction pathways at the electrocatalyst/water interface is of great importance for the development of water oxidation *** the water is oxidized on the electrocatalyst surface by the positive charges is still an open *** review summarizes current advances in studies on surface chemistry within the context of water oxidation,including the intermediates,reaction mechanisms,and their influences on the reaction *** Tafel analyses of some electrocatalysts and the rate-laws relative to charge consumption rates are also ***,how the multiple charge transfer relies on the intermediate coverage and the accumulated charge numbers is ***,the intermediates and rate-determining steps on some water oxidation catalysts are discussed based on density functional theories.

关键词： water oxidation intermediate rate-determining step rate-law Tafel analysis density functional theory

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Probing the weak interactions between amino acids and carbon monoxide

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Chinese Chemical Letters 2008年第1期19卷 119-122页

作者： Ying Wu lin chang ming Nie li Fu liao College of Chemistry and Chemical Engineering University of South China Hengyang 421001 China

The relatively weak interactions between some non-charged amino acids with CO were investigated theoretically by using density functional theory （DFT） method. The stretching frequency of CO correlates well with its bond length followed the Badger＇s rule, and the correlation between binding energy and Mulliken charge partition of CO was also investigated for the first time. 2007 Ying Wu lin. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： Amino acid CO Interaction Orientation Binding energy

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Synergetic bimetallic catalysts:A remarkable platform for efficient conversion of CO_(2) to high value-added chemicals

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Journal of Energy Chemistry 2023年第12期87卷 162-191,I0006页

作者： Jundie Hu Fengyi Yang Jiafu Qu Yahui Cai Xiaogang Yang chang ming li School of Materials Science and Engineering Suzhou University of Science and TechnologySuzhou 215009JiangsuChina College of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123JiangsuChina College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037JiangsuChina

Carbon dioxide reduction reaction(CO_(2)RR) represents an efficient approach to achieving carbon neutrality and simultaneously generating clean ***,the strong stability of CO_(2) molecules and the diversity of products pose significant *** an emerging material,bimetallic catalysts have been widely reported for their unique advantages,such as tunable electronic structures,suitable adsorption/desorption of CO_(2) and intermediates,and optimizable d-band centers of active sites through bimetallic *** catalysts provide a remarkable platform for converting CO_(2) into high value-added *** review comprehensively summarizes recent research advances in bimetallic catalysts for CO_(2)***,the challenges associated with CO_(2)RR,including activity and selectivity are analyzed,followed by a discussion on the unique advantages of bimetallic ***,their synthesis strategies are categorized into dual-atom site catalysts(DACs),bimetallic nanoparticles and nanoclusters,binary metal semiconductors,and layered double hydroxides(LDHs).Additionally,advanced characterization techniques of bimetallic catalysts and their applications in CO_(2)RR are thoroughly ***,the prospects and challenges for the application of bimetallic materials are *** review aims to provide inspiration for CO_(2)RR into high-value chemicals and shed light on the research of bimetallic materials.

关键词： Catalysis Carbon dioxide Bimetallic Dual-atom site catalysts Synergy

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Mesoporous molybdenum carbide for greatly enhanced hydrogen evolution at high current density and its mechanism studies

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Materials Reports(Energy) 2023年第3期3卷 48-54页

作者： Juan li Chun Tang Heng Zhang Zhuo Zou chang ming li Institute of Materials Science and Devices School of Material Science and EngineeringSuzhou University of Science and TechnologySuzhou215011PR China Institute of Clean Energy and Advanced Materials School of Materials and EnergySouthwest UniversityChongqing400715PR China School of New Energy and Materials Southwest Petroleum UniversityChengdu610500PR China

Currently the catalysis of hydrogen evolution reaction(HER)is mainly focused on the inherent electrocatalytic activity at relatively lower current densities while scarce at high current ***,the latter is highly demanding in efficient mass-production of hydrogen.A SiO_(2) nanospheres template-synthesis is used to prepare mesoporous molybdenum carbide nanocrystals-embedded nitrogen-doped carbon foams(mp-Mo_(2)C/NC).The material shows much more excellent catalytic activity than the non-etched Mo_(2)C/NC toward hydrogen evolution reaction(HER)in acidic *** interestingly mp-Mo_(2)C/NC still has larger overpotential than Pt/C at lower current densities,but possess remarkably smaller overpotential than the latter at higher current densities for much better electrocatalytic *** approach is developed to investigate the electrode kinetics by Tafel plots,especially with eliminating the diffusion effect,indicating that Pt/C and mp-Mo_(2)C/NC display different reaction *** low current densities the former presents reversible reaction,while the latter shows mixed electrochemical polarization/reversible electrode *** the region of higher current densities,the former becomes totally gas-diffusion controlled with large overpotential,while the latter can still retain an electrode polarization process for much lower overpotential at the same current *** endorses that the meso-porously structured mp-Mo_(2)C/NC plays a critical role in avoiding gas diffusion control-resulting large overpotential at high current *** work holds great potential for an inexpensive catalyst better than Pt/C in practical applications of mass-production hydrogen at high current densities,while clearly shedding fundamental lights on designs of rational HER catalysts for the uses at high current densities.

关键词： Porous molybdenum carbides Tafel analysis Hydrogen evolution Electrode kinetics Diffusion effect on Tafel behaviors

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Recent progress in electrochemical synthesis of carbon-free hydrogen carrier ammonia and ammonia fuel cells:A review

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Materials Reports(Energy) 2022年第4期2卷 3-18页

作者： Feng Du Wei Sun Hui Luo chang ming li Institute of Materials Science and Devices School of Materials Science and EngineeringSuzhou University of Science and TechnologySuzhou215011PR China College of Chemistry and Chemical Engineering Hainan Normal UniversityHaikou571158PR China

Ammonia(NH3)is a cornerstone widely used in the modern agriculture and industry,the annual global production gradually increases to almost 200 million *** 80%of the produced NH3 is used in the fertilizer industry and is essential for the development of global agriculture and consequently for maintaining population ***,NH3 can power hydrogen(H2)fueled devices,such as H2 fuel cells(FC),to use the interconversion between chemical energy and electric energy of nitrogen(N2)cycle,which can effectively alleviate the intermittent problems of renewable ***,the problems faced by NH3 in storage and release still restrict its ***,this review introduces the latest research and development of electrochemical NH3 synthesis and direct NH3 FC,as well as outlines the technical challenges,possible improvement measures and development perspectives.N2 reduction reaction(NRR)and nitrate reduction reaction(NO3RR)are two potential approaches for electrochemical NH3 ***,the existing research foundation still faces challenges in achieving high selectivity and *** NH3 FC are easy to transport and are expected to be widely used in mobile energy consuming equipment,but also limited by the lack of highly active and stable NH3 oxidation *** perspectives of ammonia fuel cells as an alternative green energy are discussed.

关键词： Electrocatalysis Nitrogen reduction reaction(NRR) Nitrate reduction reaction(NO3RR) Carbon-free hydrogen carrier Ammonia fuel cells

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Curtailing Carbon Usage with Addition of Functionalized NiFe2O4 Quantum Dots:Toward More Practical S Cathodes for li-S Cells

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Nano-Micro Letters 2020年第11期12卷 1-12页

作者： Ning li Ting Meng Lai Ma Han Zhang JiaJia Yao Maowen Xu chang ming li Jian Jiang School of Materials and Energy and Chongqing Key Lab for Advanced Materials and Clean Energies of TechnologiesSouthwest UniversityNo.2 Tiansheng RoadBeiBei DistrictChongqing 400715People’s Republic of China School of Physical Science and Technology Southwest UniversityNo.2 Tiansheng RoadBeiBei DistrictChongqing 400715People’s Republic of China

Smartcombination of manifold carbonaceous materials with admirable functionalities(like full of pores/functional groups,high specific surface area) is still a mainstream/preferential way to address knotty issues of polysulfides dissolution/shuttling and poor electrical conductivity for S-based ***,extensive use of conductive carbon fillers in cell designs/technology would induce electrolytic overconsumption and thereby shelve high-energy-density promise of li-S *** cut down carbon usage,we propose the incorporation of multi-functionalized NiFe2O4 quantum dots(QDs) as affordable additive *** total carbon content can be greatly curtailed from 26%(in traditional S/C cathodes) to a low/commercial mass ratio(~5%).Particularly,note that NiFe2O4 QDs additives own superb chemisorption interactions with soluble li2Sn molecules and proper catalytic features facilitating polysulfide phase conversions and can also strengthen charge-transfer capability/redox kinetics of overall cathode *** from these intrinsic properties,such hybrid cathodes demonstrate prominent rate behaviors(decent capacity retention with ~526 mAh g^-1 even at 5 A g^-1) and stable cyclic performance in liNO3-free electrolytes(only ~0.08% capacity decay per cycle in 500 cycles at 0.2 A g^-1).This work may arouse tremendous research interest in seeking other alternative QDs and offer an economical/more applicable methodology to construct low-carbon-content electrodes for practical usage.

关键词： Carbon usage reduction NiFe_2O_4 quantum dots Additive substitute Practical S cathode li-S cells

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Utilization mechanism of foam flooding and distribution situation of residual oil in fractured-vuggy carbonate reservoirs

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Petroleum Science 2023年第3期20卷 1620-1639页

作者： Yu-Chen Wen Ji-Rui Hou Xiao-li Xiao chang-ming li ming Qu Ya-jie Zhao Wei-Xin Zhong Tuo liang Wei-Peng Wu Research Institute of Unconventional Petroleum Science and Technology China University of Petroleum(Beijing)Beijing102249China Key Laboratory of Petroleum Engineering China University of Petroleum(Bejing)Bejing102249China

The development of fractured-vuggy carbonate reservoirs is extremely difficult because of the complex fractured-vuggy structure and strong *** flooding is a potential enhanced oil recovery(EOR)technology in fractured-vuggy carbonate *** on the similarity criterion,three types of 2D visual physical models of the fractured-vuggy structure were made by laser ablation technique,and a 3D visual physical model of the fractured-vuggy reservoir was made by 3D printing *** the physical analog experiments of foam flooding were carried out in these *** experimental results show that foam can effectively improve the mobility ratio,control the flow velocity of the fluid in different directions,and sweep complex fracture *** effect of foam flooding in fractures can be improved by increasing foam strength and enhancing foam *** effect of foam flooding in vugs can be improved by reducing the density of the foam and the interfacial tension between foam and *** types of microscopic residual oil and three types of macroscopic residual oil can be displaced by foam *** study verifies the EOR of foam flooding in the fractured-vuggy reservoir and provides theoretical support for the application of foam flooding in fractured-vuggy reservoirs.

关键词： Fractured-vuggy reservoirs Foam flooding Physical model Residual oil Enhanced oil recovery(EOR)

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Influence of Molecular Interaction on Crystallization Behavior of Glycine from Mother liquor

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Chemical Research in Chinese Universities 2011年第6期27卷 1055-1059页

作者： TAO chang-yuan li ming-song FAN Xing liU Zuo-hua DU Jun College of Chemistry and Chemical Engineering Chongqing University Chonqing 400044 P. R. China

The mother liquor for preparing industrial HCN was investigated, to analyze the side-products’ structure and influence of molecular interactions of side-products with glycine and solvent on the glycine’s crystallization process. The side-products（SPs） were super-branched oligmers with plenty of hydrophilic groups, which could affect the crystallization process by interactions such as hydrogen bond. Alcohol-water mixed solvent with different polyols could be used to weaken the SPs-glycine interaction and strengthen the SPs-water interaction, which help to improve the crystallization efficiency and purity. After optimization, SPs’ mass fraction in glycine could be reduced by 80% and the morphology of crystal particles could also be improved.

关键词： Glycine Mother liquor Molecular interaction Mixed solvent Crystallization

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Recent advances of high performance SiO_(x)(0

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Materials Reports(Energy) 2024年第2期4卷 23-33页

作者： Wenwen Deng Ying Zhou Naiqi Hu Shaocong Ni Weihang Zhang chang ming li School of Material Science and Engineering Suzhou University of Science and TechnologySuzhou215009PR China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin300071PR China State Key Laboratory of Coordination Chemistry MOE Key Laboratory of Mesoscopic ChemistryMOE Key Laboratory of High Performance Polymer Materials and TechnologyJiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry&Chemical EngineeringNanjing UniversityNanjing210023PR China

SiOx is attractive as an anode material for lithium-ion batteries(liBs)due to its high capacity,low cost,and relatively higher cyclic stability than Si ***,the intrinsic low electronic conductivity,low initial coulombic efficiency(ICE),and volume expansion during cycles hinder its *** this review,we summarize advances in high performance SiOx anodes,mainly from two aspects:active material and *** future perspective is investigated at the end of this *** review provides strategical guidance for developing high performance SiOx anodes.

关键词： SiOx Anode High-performance Active material Binders

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