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Heterostructure engineering in electrode materials for sodium-ion batteries:Recent progress and perspectives

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eScience 2023年第5期3卷 1-11页

作者： Eric Gabriel Chunrong Ma Kincaid Graff Angel Conrado Dewen Hou Hui Xiong Micron School of materials Science and Engineering Boise State UniversityBoiseID83725USA X-ray Sciences Division Argonne National LaboratoryLemontIL60439USA College of Textiles&Clothing Qingdao UniversityQingdao266071China Key Laboratory of Bio-Fibers and Eco-Textiles Qingdao UniversityQingdao266071China Center for Nanoscale materials Argonne National LaboratoryLemontIL60439USA Center for Advanced Energy Studies Idaho FallsID83401USA

Sodium-ion batteries(SIBs)have stepped into the spotlight as a promising alternative to lithium-ion batteries for large-scale energy storage ***,SIB electrode materials,in general,have inferior performance than their lithium counterparts because Nat is larger and heavier than *** engineering is a promising strategy to overcome this intrinsic limitation and achieve practical *** provide a brief review of recent progress in heterostructure engineering of electrode materials and research on how the phase interface influences Nat storage and transport *** strategies for the design and fabrication of heterostructures(in situ methods)are discussed,with a focus on the heterostructure formation *** heterostructure's influence on Nat storage and transport properties arises primarily from local distortions of the structure and chemomechanical coupling at the phase interface,which may accelerate ion/electron diffusion,create additional active sites,and bolster structural ***,we offer our perspectives on the existing challenges,knowledge gaps,and opportunities for the advancement of heterostructure engineering as a means to develop practical,highperformance sodium-ion batteries.

关键词： Heterostructure Sodium-ion batteries electrode materials Heterogeneous materials Interface engineering Intergrowth

Layered AI-substituted Cobalt Hydroxides/GO Composites for electrode materials of Supercapacitors

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Chinese Journal of Chemistry 2011年第11期29卷 2257-2262页

作者：陈艳丽胡中爱常艳琴王欢文付国瑞金小青谢莉婧 Key Laboratory of Eco-Environment-Related Polymer materials of Ministry of Education Key Laboratory of Polymer Materials of Gansu Province College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 China

In this work, Al-substituted a-Co（OH）2/GO composites with supercapacitive properties were prepared by chemical co-precipitated method in which cobalt nitrate and aluminum nitrate were used as the raw material, and graphite oxide was employed as carrier. The as-prepared materials were characterized by X-ray diffraction （XRD）, field emission scanning electron microscopy （FESEM） and fourier transform infrared spectroscopy （FF-IR）. Cyclic voltammetry （CV） and galvanostatic charge/discharge measurements showed that the Al-substituted a-Co（OH）2/GO electrode material had excellent electrochemical capacitance. The specific capacitance of 1137 F·g-11 was achieved in 6 mol/L KOH solution at a current density of 1 A·g-1 within a potential range of 0-0.5 V. Moreover, only 12% losses of the initial specific capacitance were found after 500 cycles at a current density of 1 A·g-1.

关键词： Al-substituted a-Co(OH)2/GO chemical co-precipitation electrode materials supercapacitor

Facile Synthesis of Porous Carbons Derived from Biomass as High-Performances electrode materials

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Facile Synthesis of Porous Carbons Derived from Biomass as H...

Core-shell Fe3O4/CeO2/C hollow spheres as advanced electrode materials for energy storage

中国化学会第九届全国无机化学学术会议

作者： Mengjiao Wang Xin Wang Xiaohui Guo Key Lab of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education the College of Chemistry and Materials ScienceNorthwest University

Electrical double layer capacitors(EDLCs) are one of the promising electrochemical energy storage devices with high power characteristics, which have been proved to be useful in consumer electronics, memory backup systems, uninterruptable power sources, and hybrid electric vehicles.1,2 EDLCs from nanostructured carbon based electrodes have triggered considerable attention due to their scalability, low-cost, excellent cycle stability, and attractive overall performances.3 Wherein, a series of porous plate-like carbons from lotus root shells were prepared via pyrolysis followed by a KOH activation process. The prepared carbons exhibit high specific surface areas 2961 m2 g-1 and large pore volume 1.47 cm3 g-1 and excellent capacitive performances in supercapacitor, as shown in Figure 1. In addition, a kind of partially graphitic flake-like carbons derived from chitosan and their magnetic composite were prepared via hydrothermal reaction followed by a high-temperature carbonization process. The prepared carbon/iron oxide composites serve as electrode material in supercapacitor. Electrochemical results demonstrated that the carbon/iron oxide based electrode can deliver high specific capacitance 299 F g-1 at current density of 0.5 A g-1 and excellent recycling durability. Above results indicate that the highly-developed porosity features, together with the good conductivity of carbon species, can effectively improve storage energy performances of the carbon electrodes. In summary, the prepared porous carbon based materials serve as electrode in ECs and exhibit high specific capacitance and excellent recycling stability. The present synthetic approach is facile, low-cost, scalable and reproducible,which could pave an avenue for speeding up the fabrication of the alternatively green materials from natural products.

关键词： Porous carbon electrode materials Capacity Biomass Hydrothermal

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Core-shell Fe3O4/CeO2/C hollow spheres as advanced electrode...

Bibliometric analysis and systematic review of electrochemical methods for environmental remediation

河南省化学会2020年学术年会

作者：程承魏成振 School of Chemistry and Chemical Engineering and Henan Key Laboratory of New Optoelectric Functional Materials Anyang Normal University

Core-shell hollow structures have been exhibited competitive edge in electrochemical energy ***,core-shell FeO/CeO/C hollow spheres are successfully ***-glycerate core-shell hollow spheres are first obtained as *** heat treatment in Ar,FeCe-glycerate templates are annealed to form core-shell FeO/CeO/C hollow *** structures,large specific surface areas and optimal compositions enable the FeO/CeO/C to show desired electrochemical performances.

关键词： Core-shell hollow structures Fe3O4/CeO2/C electrode materials Energy storage

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Journal of Environmental Sciences 2024年第10期144卷 113-136页

作者： Wenbin Huang Shibin Liu Tao Zhang Hao Wu Shengyan Pu College of Earth Sciences Chengdu University of TechnologyChengdu 610059China State Key Laboratory of Geohazard Prevention and Geoenvironment Protection(Chengdu University of Technology) Chengdu 610059China College of Ecology and Environment Chengdu University of TechnologyChengdu 610059China Key Laboratory of Biodiversity Formation Mechanism and Comprehensive Utilization of the Qinghai-Tibet Plateau in Qinghai Province Qinghai Normal UniversityXining 810008China Scientific Research Academy of Guangxi Environmental Protection Nanning 530022China

Electrochemical methods are increasingly favored for remediating polluted environments due to their environmental compatibility and reagent-saving ***,a comprehensive understanding of recent progress,mechanisms,and trends in thesemethods is currently *** of Science(WoS)databases were utilized for searching the primary data to understand the knowledge structure and research trends of publications on electrochemical methods and to unveil certain hotspots and future trends of electrochemical methods *** original data were sampled from 9080 publications in those databases with the search deadline of June 1st,*** and VOSviewer software facilitated data visualization and analysis of document quantities,source journals,institutions,authors,and *** discussed principles,influencing factors,and progress related to seven major ***,publications on this subject have experienced significant growth since *** most frequently-investigated areas in electrochemical methods included novel materials development,heavy metal remediation,organic pollutant degradation,and removal mechanism identification.“Advanced oxidation process”and“Nanocomposite”are currently trending *** major remediation mechanisms are adsorption,oxidation,and *** efficiency of electrochemical systems is influenced by material properties,system configuration,electron transfer efficiency,and power ***-Fenton exhibits significant advantages in achieving synergistic effects of anodic oxidation and electro-adsorption among the seven *** research should prioritize the improvement of electron transfer efficiency,the optimization of electrode materials,the exploration of emerging technology coupling,and the reduction in system operation and maintenance costs.

关键词： Electrochemical remediation Bibliometric analysis Heavy metals Organic pollutants electrode materials

Tracking lithiation with transmission electron microscopy

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Science China Chemistry 2024年第1期67卷 291-311页

作者： Xincheng Lei Jianxiong Zhao Jiayi Wang Dong Su Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China South China Academy of Advanced Optoelectronics&International Academy of Optoelectronics at Zhaoqing South China Normal UniversityGuangzhou 510006China

Li-ion batteries(LIBs)have dominated energy-storage techniques for portable electronic devices and electric cars,and are expanding their territory into the large-scale energy *** energy storage of LIBs is realized by the reversible shuttle of lithium ions between *** is essential to track the lithium diffusion and obtain a profound insight into the lithiation mechanism during the work cycle of *** electron microscopy(TEM)is a powerful tool for the structural characterization,which can provide the information about the lithiation at the atomic *** this review,we summarize the research frontiers of TEM applications on *** introduce the techniques for the direct observation of Li species in LIB-related ***,the application of cryo-TEM is ***,in-situ TEM technique is further discussed since it shows great advantages in studying the dynamical structure changes of *** perspectives and strategies in this review offer feasible guidance for researchers to further improve the performance of LIBs.

关键词： lithium-ion battery electrode materials transmission electron microscopy cryo-TEM in-situ TEM

High-efficiently doping nitrogen in kapok fiber-derived hard carbon used as anode materials for boosting rate performance of sodium-ion batteries

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Journal of Energy Chemistry 2024年第9期96卷 472-482页

作者： Tianyun Zhang Tian Zhang Fujuan Wang Fen Ran School of Mechanical and Electronical Engineering Lanzhou University of TechnologyLanzhou 730050GansuChina State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals School of Materials Science and EngineeringLanzhou University of TechnologyLanzhou 730500GansuChina

The engineering of plant-based precursor for nitrogen doping has become one of the most promising strategies to enhance rate capability of hard carbon materials for sodium-ion batteries;however,the poor rate performance is mainly caused by lack of pyridine nitrogen,which often tends to escape because of high temperature in preparation process of hard *** this paper,a high-rate kapok fiber-derived hard carbon is fabricated by cross-linking carboxyl group in 2,6-pyridinedicarboxylic acid with the exposed hydroxyl group on alkalized kapok with assistance of zinc ***,a high nitrogen doping content of 4.24%is achieved,most of which are pyridine nitrogen;this is crucial for improving the defect sites and electronic conductivity of hard *** optimized carbon with feature of high nitrogen content,abundant functional groups,degree of disorder,and large layer spacing exhibits high capacity of 401.7 mAh g^(−1)at a current density of 0.05 A g^(−1),and more importantly,good rate performance,for example,even at the current density of 2 A g^(−1),a specific capacity of 159.5 mAh g^(−1)can be *** findings make plant-based hard carbon a promising candidate for commercial application of sodium-ion batteries,achieving high-rate performance with the enhanced pre-cross-linking interaction between plant precursors and dopants to optimize aromatization process by auxiliary pyrolysis.

关键词： Kapok fiber Hard carbon electrode materials Rate performance Sodium-ion batteries

Efficient Preparation and Electrochemical Properties of BiOCl/Graphite by One-step Solvothermal Method

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Journal of Wuhan University of Technology(materials Science) 2024年第3期39卷 651-657页

作者：门丽娟 FEI Chi LIU An 陈春钰 ZHOU Jiankang JU Dianchun School of Metallurgy Engineering Jiangsu University of Science and TechnologyZhangjiagang 215600China

We used the surface-pretreated graphite paper(Gp)as a carrier and loaded BiOCl with high selectivity to Cl^(-)on its surface by solvothermal method to form BiOCl@Gp *** morphology,structure,and composition of the materials were characterized by scanning electron microscopy and nitrogen adsorption/desorption,and the results showed that the spherical BiOCl particles were uniformly dispersed on the surface of the Gp,forming a mesoporous BiOCl@Gp composite with a specific surface area of 22.82 m^(2)/g and a pore volume of 0.043 cm3/***,cyclic voltammetry and electrochemical impedance spectroscopy were used to test the electrochemical properties of the composites,and the stability of BiOCl and the high conductivity of Gp were synergistic,the BiOCl@Gp exhibited a specific capacitance of 30.2 F·g^(-1) at a current density of 0.5 A·g^(-1),and the selectivity of the BiOCl@Gp materials for Cl^(-)was significantly higher than that of SO_(4)^(2-),NO_(2)^(-),and HCO_(3)^(-).Therefore,BiOCl@Gp composite electrode materials can be used for the selective adsorption of Cl^(-)in wastewater,in order to achieve efficient wastewater recycling.

关键词： solvothermal method bismuth oxychloride electrochemistry electrode materials

Advanced electrospinning nanomaterials:From spinning fabrication techniques to electrochemical applications

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Nano Research 2024年第8期17卷 7077-7116页

作者： Jie Zhang Miao Yu Shuhui Tao College of materials Science and Engineering Sichuan UniversityChengdu 610065China School of Mechanical Engineering Sichuan UniversityChengdu 610065China National University of Singapore(Chongqing)Research Institute Chongqing 401123China

Fuel cells,rechargeable metal–air batteries,metal-ion batteries,and supercapacitors have been regarded as prospective energy sources technologies to replace the fossil ***,electrochemical sensors also have been successfully developed as promising platforms for detecting pollutants,drug analysis,and healthcare *** is a scalable and suitable technique to design and fabricate diverse nanofibers and their nanocomposites for key components in electrochemical ***,a comprehensive review of electrospinning,from the technological innovations to the novel electrospun composite nanofibers,is *** importantly,the recent advances on the diverse components of electrochemical devices are highlighted,followed with the detailed discussion about the corresponding enhancement mechanism based on the electrospun ***,the currently faced challenges on the fabrication of electrospun nanomaterials are raised and a brief perspective for the future development of electrospun nanomaterials-based electrochemical applications is prospected.

关键词： electrospinning carbon nanofibers metal-organic frameworks electrode materials electrochemical applications