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Exploration of Mixed Polyanionic Compound for Potential High-Voltage Cathode materials in Sodium-Ion Batteries

CCS Chemistry 2025年第2期7卷 554-563页

作者： Tianyi Song Nanzhong Wu Xiao Zheng Xinyuan Zhang Shu Guo Qi Yan Wenjiao Yao Yongbing Tang Advanced Energy Storage Technology Research Center Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055 Shenzhen College of Advanced Technology University of Chinese Academy of SciencesShenzhen 518055 Tianjin Key Laboratory of Functional Crystal Materials Institute of Functional CrystalsTianjin University of TechnologyTianjin 300384 Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055 International Quantum Academy Shenzhen 518048 Shenzhen Key Laboratory of Energy Materials for Carbon Neutrality Shenzhen 518055

Mixed polyanionic compounds are potential cathode materials for sodium-ion batteries(SIBs).Herein,considering the advantages of the strong inductive effect of sulfate and the diverse,flexible coordination modes of oxalate,we systematically explored mixed sulfate-oxalate systems and obtained three sodium-contained polyanionic ***,the novel three-dimensional Na_(2)Co(C(2)O_(4))(SO_(4))·xH_(2)O(x=1-1.5)was found to be a promising cathode material for SIBs with good electrochemical activity at high *** present study sets an example of exploring sodium-storage materials in the mixed polyanionic family and provides new insights into designing novel high-voltage cathodes for sodium-based energy storage devices.

关键词： polyanionic compounds sodium-ion batteries cathodes high voltage hydrothermal synthesis

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Size-effect on Ni electrocatalyst:The case of electrochemical benzyl alcohol oxidation

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Nano Research 2023年第1期16卷 202-208页

作者： Jian Zhong Yongli Shen Pei Zhu Shuang Yao Changhua An Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion School of Chemistry and Chemical EngineeringTianjin University of TechnologyTianjin 300384China Tianjin Key Laboratory of Advanced Functional Porous Materials Institute for New Energy Materials&Low-Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China

The nanoparticles(NPs)of Ni with different sizes endows its distinctive physical and chemical properties,which represents a typical strategy for the development of high-performance ***,the size effect of metallic Ni-NPs on electrocatalytic performance remains ***,the Ni-NPs with different sizes supported on nitrogen doped carbon(NC)has been synthesized by controlling the pyrolysis temperature,leading to the synthesis of Ni@NC-500(8.3 nm),Ni@NC-280(1.9 nm)and Ni@NC-200(1.0 nm).The electrooxidation of benzyl alcohol(BA)over these nanocatalysts shows the yield of benzoic acid was 99%,82%,55%on Ni@NC-280,Ni@NC-200 and Ni@NC-500,*** experimental and theoretical simulation demonstrate that the difference in the adsorption strength of reactant molecules by Ni-NPs is responsible for their different performance,where the Ni@NC-280 exhibits an optimal adsorption configuration between Ni@NC-280 electrode and *** work provides a new angle for designing and synthesizing efficient electrocatalysts,which may be extended to the exploration of various promising electrocatalytic systems.

关键词： size effect electro-oxidation Ni nanoparticles benzyl alcohol

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Preparation and molten salts corrosion behavior of high-entropy（Ca,Sr,Ba） TMO3（ TM = Zr, Hf and Ta）: Promising protecting materials of reference electrode for metal smelting through fused salts electrolysis

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Corrosion Communications 2021年第3期3卷 10-22页

作者： Shuaihang Qiu Huimin Xiang Fu-Zhi Dai Hailong Wang Yanchun Zhou School of Materials Science and Engineering Zhengzhou University Science and Technology on Advanced Functional Composite Laboratory Aerospace Research Institute of Materials & Processing Technology

The protecting materials of reference electrode with good corrosion resistance to molten salts play vital roles in realizing smelting of refractory and rare earth metals through fused salts electrolysis. BaZrO3has been considered as a candidate protecting material of reference electrode for its good chemical stability and high-temperature corrosion resistance. However, the unsatisfactory corrosion resistance to molten salts hinders its practical application. In order to enhance the corrosion resistance to molten salts, three perovskite structured high-entropy oxides HE（Ca,Sr,Ba） TMO3including（Ca,Sr,Ba）(Zr,Hf)O3,（Ca,Sr,Ba）(Zr,Ta)O3and（Ca,Sr,Ba）(Zr,Hf,Ta)O3, were designed and prepared in this work. The as-prepared HE（Ca,Sr,Ba）(Zr,Hf)O3and（Ca,Sr,Ba）(Zr,Hf,Ta)O3ceramics are single-phase, while the as-prepared HE（Ca,Sr,Ba）(Zr,Ta)O3ceramic contains 11.6 vol.% of（Ca,Sr,Ba）2Ta2O7. These HE（Ca,Sr,Ba） TM O3ceramics possess better corrosion resistance to molten Na Cl-KCl salts than Ba Zr O3, among which（Ca,Sr,Ba）(Zr,Hf,Ta)O3shows the best corrosion resistance to molten Na Cl-KCl salts. The mass loss per unite area of HE（Ca,Sr,Ba）(Zr,Hf,Ta)O3after corrosion by molten Na Cl-KCl salts at 800 °C for 8 h is mere 2.6 ×10-6g/mm2which is ca. 1/60 of that of BaZrO3( ～1.7 ×10-4g/mm2), and its surface after corrosion is plain and smooth without any new phase detectable after corrosion. It also exhibits better corrosion resistance to molten Na F-KF salts than BaZrO3. The mass loss per unite area after corrosion by molten Na F-KF salts at 800 °C for 8 h is only 2.9 ×10-5g/mm2which is smaller than that of BaZrO3(3.6 ×10-5g/mm2), the corrosion caused by molten Na F-KF salts only occurs on the surface and the thickness of the corrosion layer is mere ～8 μm, being less than 1/10 of that of BaZrO3（～100 μm）. These results indicate that the three HE（Ca,Sr,Ba） TMO3, especially（Ca,Sr,Ba）(Zr,Hf,Ta)O3, are promising as protecting materials of reference electrode for the smelting of refractory and rar

关键词： High-entropy ceramics Perovskite-oxide Corrosion resistance Metal smelting Molten NaCl-KCl salts Molten NaF-KF salts

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Remission of iron overload in adipose tissue of obese mice by fatty acid-modified polyoxovanadates

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Rare Metals 2025年第1期44卷 461-471页

作者： Kun Chen Yu-Rong Qin Sheng-Qiu Liu Rou-Ling Chen South China Advanced Institute for Soft Matter Science and Technology School of Emergent Soft MatterSouth China University of TechnologyGuangzhou 510641China Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing South China University of TechnologyGuangzhou 510641China Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices South China University of TechnologyGuangzhou 510641China Department of Computer Science City University of Hong KongHong Kong 999077China

Iron overload has been evidenced to contribute to obesity-associated metabolic disorders,including insulin *** to reduce iron levels might help manage the metabolic complications associated with ***,it is demonstrated that the specific accumulation of oleic acid-modified polyoxovanadates(OPOVs)in adipose tissue leads to the reduction of iron concentrations in adipocytes in mice fed with a high-fat diet(HFD).Conjugation of oleic acids to polyoxovanadates enables tissue-specific depletion of iron from white adipose tissue(WAT)by OPOVs,protecting mice from HFD-induced obesity and obesity-associated metabolic *** tolerance and insulin sensitivity are improved in OPOV-treated mice,which demonstrates that the OPOV-induced iron depletion can reverse the metabolic degeneration caused by HFD-induced ***,a decrease in expression of the marker genes of iron overload suggests the participation of OPOVs in maintaining iron homeostasis and a potential medical application of vanadium clusters in targeting the iron overload caused by *** findings underscore the potential of vanadate-based clusters tailored to address the complex interplay between iron metabolism and metabolic health.

关键词： Polyoxovanadates Lipophilic conjugation Obesity Iron overload Insulin resistance

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Work-function effect of Ti_(3)C_(2)/Fe-N-C inducing solid electrolyte interphase evolution for ultra-stable sodium storage

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Nano Research 2024年第8期17卷 7163-7173页

作者： Huicong Xia Lingxing Zan Hongliang Dong Yifan Wei Yue Yu Jinfu Shu Jia-Nan Zhang Chong-Xin Shan Key Laboratory of Advanced Energy Catalytic and Functional Material Preparation of Zhengzhou College of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China Key Laboratory of Materials Physics of Ministry of Education School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450001China Key Laboratory of Chemical Reaction Engineering of Shaanxi Province College of Chemistry and Chemical EngineeringYan’an UniversityYan’an 716000China Center for High Pressure Science and Technology Advanced Research PudongShanghai 201203China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China

In the quest to enhance the efficiency of sodium-ion batteries,the dynamics of solid electrolyte interphase(SEI)formation are of paramount *** SEI layer’s integrity is integral to the charge–discharge efficiency and the overall longevity of the ***,a novel two-dimensional Ti_(3)C_(2) fragments enmeshed on iron-nitrogen-carbon(Fe-N-C)nanosheets(Ti_(3)C_(2)/Fe-NC)has been *** electrode features a matrix which has been shown to expedite SEI layer formation through the facilitation of selective anion adsorption,thus augmenting battery *** functional theory calculation reveals that the SEI evolution energy of NaPF6 at the Ti_(3)C_(2)/Fe-N-C interface is 0.81 eV,significantly lower than the Ti_(3)C_(2)(1.23 eV).This process is driven by the electron transportation from Ti_(3)C_(2) to Fe-N-C substrate,facilitated by their work-function difference,leading to the formation of ferromagnetic Fe species,which possesses Fe 3d d_(xz)d_(z)2 orbitals and undergoes hybridization with theπandσorbitals of NaF,creating a key intermediate during *** process diminishes the antibonding energy and attenuates the orbital interaction with NaF,thus reducing the activation energy and improving the SEI formation reaction ***,it leads to the creation of multi-interface SEI characterized by high-throughput ion transport and an efficient reaction network.

关键词： Ti_(3)C_(2)/Fe-N-C heterostructure work-function electron interaction solid electrolyte interphase sodium storage

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A Novel Hierarchically Lightweight Porous Carbon Derived from Egg White for Strong Microwave Absorption

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Engineering 2022年第11期18卷 161-172页

作者： Zonglin Liu Xu Zhao Liangliang Xu Qingyu Peng Xiaodong He National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Center for Composite Materials and StructureHarbin Institute of TechnologyHarbin 150080China

Egg custard is a common dish on the dining table and exhibits a uniform porous structure after *** protein within egg custard is a rich source of carbon and nitrogen,and the custard’s unique microstructure and adjustable electrical properties make it a potential porous carbon ***,nitrogen in situ doped porous carbons(NPCs)and potassium-carbonate-modified NPCs(PNPCs)are obtained through a simple gelation and carbonization process using egg white as the raw *** unique morphologies of the porous carbon are inherited from the protein and include fibrous clusters,honeycomb holes,and a grooved *** excellent impedance matching and effective internal loss make the obtained porous carbons good candidates for lightweight electromagnetic(EM)wave absorbers without the need to dope with metal *** a representative porous carbon,PNPC10-700 has multiple structures,including fibrous clusters,honeycomb holes,and a porous ***,it achieves a maximum reflection loss value of-66.15 dB(with a thickness of 3.77 mm)and a broad effective absorption bandwidth of 5.82 GHz(from 12.18 to 18.00 GHz,with a thickness of 2.5mm),which surpasses the reported values in most of the literatu ***,gelation combined with the further carbonization of egg white(protein)is a new method for designing the morphology and EM properties of porous carbon absorbers.

关键词： Microwave absorption Porous carbon Biomass K2CO3

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Acceleration of the synthesis of single Β-YB2SI2O7 feedstocks through modifying the grain size of SIO2 3

Acceleration of the synthesis of single Β-YB2SI2O7 feedstoc...

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2024 3rd International Conference on materials Engineering and Applied Mechanics, ICMEAAE 2024

作者： Wang, Zelong Guo, Donghui Jia, Xinlei Wang, Shun Zheng, Tao Jin, Runze Zhou, Zhiliang Zhou, Ning Xu, Baosheng Institute of Advanced Structure Technology Beijing Institute of Technology Beijing100081 China Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures Beijing Institute of Technology Beijing100081 China

The purpose of this study is to create single-phase β-Yb2Si2O7 feedstocks. Firstly, the single-phase β Yb2Si2O7 feedstocks were synthesized by using a micro-nano compound method. By adjusting the grain size of SiO2, the synthesis of β-Yb2Si2O7 was accelerated, and its mechanism was further investigated. Based on this, the appearance and phase structure of β-Yb2Si2O7 were studied, and the physical properties of β-Yb2Si2O7 were characterized. The results reveal that in the solid-phase synthesis of β-Yb2Si2O7, nano SiO2 exhibits greater advantages compared to micron SiO2 due to its nano-adsorption capacity and heightened reactivity when reacting with Yb2O3. This enhanced reactivity accelerates the production of β-Yb2Si2O7. When the molar ratio of Yb2O3 and SiO2 is 1:2.3, the single phase β-Yb2Si2O7 feedstocks were effectively manufactured by sintering at 1, 500℃ for one hour. The β-Yb2Si2O7 feedstocks have a particle size distribution with d10, d50, and d90 values of 20.56 μm, 33.85 μm, and 52.65 μm, respectively. The β-Yb2Si2O7 feedstocks have apparent and tap densities of 1.66 g/cm3 and 2.05 g/cm3, respectively. In summary, single-phase β-Yb2Si2O7 feedstocks can be the preferred materials for EBCs. © 2024 Institute of Physics Publishing. All rights reserved.

关键词： Particle size

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Modified Cu active sites by alloying for efficient electrocatalytic reduction CO_(2) to CO

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Journal of Energy Chemistry 2024年第12期99卷 450-457页

作者： Yan Wang Ruikuan Xie Naixuan Ci Zhiyuan Zhu Chaoyi Li Guoliang Chai Hua-Jun Qiu Yinghe Zhang Shenzhen Key Laboratory of Advanced Functional Carbon Materials Research and Comprehensive Application Harbin Institute of TechnologyShenzhen 518055GuangdongChina School of Science Harbin Institute of TechnologyShenzhen 518055GuangdongChina School of Materials Science and Engineering Harbin Institute of TechnologyShenzhen 518055GuangdongChina State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002FujianChina

Transition metals like Au,Ag,and Cu have been reported to be quite active for CO_(2) *** this study,we use density functional theory(DFT)calculation to investigate the electronic structure and catalytic performance of Au,Ag,Cu and their alloys for CO_(2) reduction reaction(CO_(2)RR).Theoretical calculations identified the combination of Ag,Cu,and Au in a face-centered cubic(fcc)alloy as an outstanding electrocatalyst for CO_(2) reduction to CO,with Cu as the active *** d-orbital projected density of state(PDOS)profile suggests that alloying alters the electronic structure of the Cu site,thereby affecting the Gibbs free energy change for the formation of*COOH intermediate(ΔG_(*COOH)).To demonstrate the theoretical prediction experimentally,we employ a top-down dealloying approach to synthesize a nanoporous structured AgCuAu alloy(NP-Ag_(5)Cu_(5)Au_(5)).Electrochemical experiments validate that the ternary alloy catalyst is clearly better than unary and binary catalysts,showing a Faradaic efficiency(FE)for CO over 90%across a broad potential range of 0.6 V,with a peak of approximately 96%at-0.573 V *** study underscores the potential of multi-component alloys in CO_(2)RR and establishes a theoretical basis for designing efficient catalysts for CO_(2) utilization.

关键词： CO_(2)reduction CO Multi-component alloy Nano-porous Electrocatalyst

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3D vertically aligned microchannel structure to enhance piezoelectric energy harvesting performance of PZT/PVDF&CNTs piezoelectric composites

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Journal of Materiomics 2024年第5期10卷 1063-1070页

作者： Limin Hou Yu Huan Mupeng Zheng Yilong Liu Chuilei Wang Xinjian Wang Changxiao Li Zhenxing Wang Tao Wei School of Materials Science and Engineering University of JinanJinan250022China Key Laboratory of Advanced Functional Materials Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing100124China Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education and International Center for Dielectric ResearchXi'an Jiaotong UniversityXi'an710049China SICC Co. LtdJinan250000China

Piezoelectric energy harvesters(PEHs)have attracted significant attention with the ability of converting mechanical energy into electrical energy and power the self-powered microelectronic ***,material's superior energy harvesting performance is closely related to its high transduction coefficient(d_(33)×g_(33)),which is dependent on higher piezoelectric coefficient d33 and lower dielectric constantεr of ***,the high d33 and lowεr are difficult to be simultaneously achieved in piezoelectric ***,lead zirconate titanate(PZT)based piezoelectric composites with vertically aligned microchannel structure are constructed by phase-inversion *** polyvinylidene fluoride(PVDF)and carbon nanotubes(CNTs)are mixed as fillers to fabricate PZT/PVDF&CNTs *** unique structure and uniformly distributed CNTs network enhance the polarization and thus improve the *** PVDF filler effectively reduce theε*** a consequence,the excellent piezoelectric coefficient(d_(33)=595 pC/N)and relatively low dielectric constant(ε_(r)=1,603)were obtained in PZT/PVDF&CNTs composites,which generated an ultra-high d_(33)×g_(33) of 24,942×10^(−15) m^(2)/***,the PZT/PVDF&CNTs piezoelectric composites achieve excellent energy harvesting performance(output voltage:66 V,short current:39.22μA,and power density:1.25μW/mm^(2)).Our strategy effectively boosts the performance of piezoelectric-polymer composites,which has certain guiding significance for design of energy harvesters.

关键词： Piezoelectric-polymer composites Phase-inversion method 3D vertically aligned microchannel structure Piezoelectric energy harvester Carbon nanotubes

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Observation of low thermal expansion behavior and weak thermal anisotropy in M_(3)A_(2)C phases

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Journal of materials science & technology 2023年第23期154卷 210-216页

作者： Hongxiang Chen Zhilong Zhang Jun Deng Zhijie Lin Chunfu Hong Shixuan Du Pinqiang Dai School of Materials Science and Engineering Fujian University of Technology Fuzhou 350118 China Institute of Physics & University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 100190 China Fujian Provincial Key Laboratory of Advanced Materials Processing and Application Fuzhou 350118 China Center for Advanced Energy and Functional Materials Fujian University of Technology Fuzhou 350118 China Songshan Lake Materials Laboratory Dongguan 523808 China CAS Key Laboratory of Vacuum Physics Beijing 100049 China

M_(3)A_(2)X phases,named 321 phases,are an atypical series of MAX phases featuring in the MA-triangular-prism bilayers,with the A=As/P,exhibiting excellent elastic *** work systematically studies the thermal expansion properties of 321 *** found their average linear thermal expansion coefficients(TECs),α_(L)=5-6μK^(–1),are the lowest among the reported values of MAX *** lowest average TEC was found in Nb_(3)As_(2)C(αa=4.46(4)μK^(–1),αc=5.09(4)μK–1,αL=5.09(4)μK–1).The average TEC and anisotropy factor(αc/αa)of Nb_(3)As_(2)C and Nb_(3)P_(2)C were lower than the ones of the corresponding 211 *** best isotropy performance was found in Nb_(3)P_(2)C (αc/αa=1.11).Moreover,our first-principles calculations demonstrate that the weaker chemical bonding between Nb-As/P than Nb-C induces thermal expansion in M_(3)A_(2)X ***,a relatively weaker anharmonic effect in 321 phases than in the 211 phases was revealed by the as-calculated average Grüneisen parameters,which account for the lower TECs in 321 *** low TECs and enhanced thermal isotropy make 321 phases outstanding among MAX phases,which could be sound candidates for varying-temperature structural-functional components.

关键词： Max phase Layered ceramics Thermal expansion Anisotropy X-ray diffraction

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