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A functional cathode sodium compensation agent for stable sodium-ion batteries

Green Energy & Environment 2025年第1期10卷 173-182页

作者： Wei Wu Zhenglin Hu Zhengfei Zhao Aoxuan Wang Jiayan Luo Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin300072China State Key Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai200240China Shanghai Jiao Tong University Shaoxing Research Institute of Renewable Energy and Molecular Engineering Shaoxing312000China

Hard carbon(HC)is widely used in sodium-ion batteries(SIBs),but its performance has always been limited by lowinitial Coulombic efficiency(ICE)and cycling *** compensation agent is a favorable strategy to make up for the loss of active sodium ions consumed *** it lacks agent that effectively decomposes to increase the active sodium ions as well as regulate carbon defects for decreasing the irreversible sodium ions ***,we propose 1,2-dihydroxybenzene Na salt(NaDB)as a cathode compensation agent with high specific capacity(347.9 mAh g^(-1)),lower desodiation potential(2.4–2.8 V)and high utilization(99%).Meanwhile,its byproduct could functionalize HC with more C=O groups and promote its reversible ***,the presodiation hard carbon(pHC)anode exhibits highly reversible capacity of 204.7 mAh g^(-1) with 98%retention at 5 C rate over 1000 ***,with 5 wt%NaDB initially coated on the Na3V2(PO4)3(NVP)cathode,the capacity retention of NVP + NaDB|HC cell could increase from 22%to 89%after 1000 cycles at 1 C *** work provides a new avenue to improve reversible capacity and cycling performance of SIBs through designing functional cathode compensation agent.

关键词： Hard carbon ICE Cathode compensation agent Reversible capacity Stability

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Homologous CoS2 interface with directed electron transfer and strong chloridion repulsion for efficient seawater oxidation

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Science China Chemistry 2025年第5期68卷 1869-1878页

作者： Yuan Tian Jiang-Bo Chen Jie Ying Ge Tian Yu-Xuan Xiao Yi Lu Si-Ming Wu Wei Geng Ling Shen Xiao-Yu Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and School of Materials Science and Engineeringand Shenzhen Research Institute & Laoshan LaboratoryWuhan University of Technology School of Chemical Engineering and Technology Sun Yat-sen University National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies Foshan Xianhu Laboratory

Seawater electrolysis is a highly promising method to produce high energy density hydrogen,especially in dry areas that have scarce freshwater ***,application of seawater electrolysis is confronted by two major problems associated with catalysts employed for the anodic oxygen evolution reaction（OER） including the competitive hypochlorite evolution reaction（HCER） and strong chloridion（Cl-） triggered *** studies aimed at overcoming these problems,a facile method has been developed to synthesize a homologous CoS2heterojunction as an OER *** to a difference in work functions at the interface and increased electron density,this material has directed electron transfer and strong chloridion repulsion properties,*** have shown that CoS2achieves low overpotentials of 289 and 322 mV at 10 mA cm-2current density in respective alkaline（1 M KOH） and alkaline simulated seawater ***,the outstanding stability of CoS2is reflected in a negligible decline in activity during promotion of the OER for 100 *** of density functional theory calculations reveal that the homologous CoS2heterojunction promotes directed electron transport for optimizing adsorption/desorption of reactive species and heightens the Cl-adsorption energy for strongly repulsing Cl-,phenomena that enhance OER performance in alkaline simulated seawater.

关键词： metal sulfide homologous heterojunction directed transfer chloride ion repulsion seawater electrolysis

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Synergistic utilization of carbon sources for efficient biosynthesis of N-acetylglucosamine

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Green chemical engineering 2023年第2期4卷 233-238页

作者： Yanni Pei Yuhan Wang Xiaolin Shen Jia Wang Xinxiao Sun Qipeng Yuan State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing100029China

N-acetylglucosamine(GlcNAc)is an amino monosaccharide that has a variety of bioactivities and is widely used in pharmaceutical and food *** of GlcNAc by chitin hydrolysis is limited by the supply of raw materials and encounters the risk of shellfish protein *** efficient biosynthesis of GlcNAc,one challenge is to balance the carbon distribution between growth and ***,we applied the strategy of synergistic carbon utilization,in which glycerol supports cell growth and provides the acetyl group of GlcNAc while glucose serves as the precursor to *** efficiency of GlcNAc production was stepwise improved by blocking the product re-uptake and degradation,strengthening the biosynthetic pathway and synergistically utilizing two carbon *** these efforts,the final strain produced 41.5 g/L GlcNAc with a yield of 0.49 g/g of total carbon *** addition,we also explored the feasibility of using acetate as a cheap carbon source to partly replace *** study provides a promising alternative strategy for sustainable and efficient pro-duction of GlcNAc.

关键词： N-Acetylglucosamine Synergistic carbon utilization Glucose facilitated diffusion system Acetate

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Graphene quantum dots doped poly(vinyl alcohol)hybrid membranes for desalination via pervaporation

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Chinese Journal of chemical engineering 2023年第11期63卷 226-234页

作者： Yunyun Wan Lulu Yao Peng Cui School of Chemistry and Chemical Engineering Hefei University of TechnologyChina Anhui Province Key Laboratory of Controllable Chemical Reaction&Materials Chemical Engineering Hefei230009China

Pervaporation desalination by highly hydrophilic materials such as poly(vinyl alcohol)(PVA)based separation membrane is a burgeoning technology of late ***,the improvement of membrane flux in pervaporation desalination has been a difficult ***,a novel hybrid membrane with doped graphene oxide quantum dots(GOQDs)which is rich in hydrophilic groups and small size into the matrix of PVA was prepared to improve the membrane *** membranes structures were described by field emission scanning electron microscopy(FESEM),atomic force microscopy(AFM),Fourier transform infrared(FT-IR),differential scanning calorimetry(DSC),thermogravimetric analysis(TGA)and X-ray diffraction(XRD).And more,Water contact angle,swelling degree,and pervaporation properties were carried out to explore the effect of GOQDs in PVA *** addition,GOQDs content in the hybrid membrane,NaCl concentration,and feed temperature were investigated ***,the hydrogen bonds between PVA chains were weakened by the interaction between GOQDs and PVA ***,the hybrid membrane with optimized doped GOQDs content,200 mg·L^(-1),displays a high membrane flux of 17.09 kg·m^(-2)·h^(-1)and the salt rejection is consistently greater than 99.6%.

关键词： Pervaporation Desalination Graphene oxide quantum dots Poly(vinyl alcohol) Membranes

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Particle-scale and sub-grid drag models coupled CFD for simulating the CO methanation in a CFB riser

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Particuology 2023年第12期83卷 178-193页

作者： Jiageng Li Yong Jia Bo Ouyang Bolun Yang Zheng-Hong Luo Zhong-Wen Liu Key Laboratory of Syngas Conversion of Shaanxi Province School of Chemistry&Chemical EngineeringShaanxi Normal UniversityXi'an710119China Department of Chemical Engineering School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai200240China School of Chemical Engineering and Technology Xi'an Jiaotong UniversityXi'an710049China

The diffusion and chemical reactions inside the catalyst particles and the heterogeneous flow structure in the computational cells are key factors to affect the accuracy of the coarse-grid simulation in circulating fluidized bed(CFB)methanation *** this work,a particle-scale model is developed to calculate the effective reaction rate considering the transient diffusion and chemical reactions in the particle scale,i.e.,the scale of the single catalyst particle.A modified sub-grid drag model is proposed to consider the effects of the meso-scale and chemical reactions on the heterogeneous gas-solid interaction,where the meso-scale is between the single particle and the whole reactor and featured with the particle ***,a coupled model is developed by integrating the particle-scale and modified sub-grid drag models into ***,the coupled model is validated to achieve accurate predictions on the CO methanation process in a CFB ***,the coupled model can be performed with a coarse grid(∼58 times particle diameter)and a large time step(0.005 s)to accelerate the *** simply changing the reaction kinetics,different gas-solid catalytic reaction systems can be simulated by using the coupled model.

关键词： Computational fluid dynamics Circulating fluidized bed co methanation Particle-scale model Drag model

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Promoting electrocatalytic nitrogen reduction to ammonia via dopant boron on two-dimensional materials

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Rare Metals 2024年第10期43卷 5117-5125页

作者： Ya-Hui Cui Wen-Cheng Ouyang Ai-Jun Gao Chang-Yuan Yu Li-Peng Zhang State Key Laboratory of Organic-Inorganic Composites College of Chemical EngineeringBeijing University of Chemical TechnologyBeijing 100029China College of Materials Science and Engineering Beijing University of Chemical TechnologyBeijing 100029China College of Life Science and Technology Beijing University of Chemical TechnologyBeijing 100029China

Electrocatalytic nitrogen reduction reaction(NRR)is a key process for producing energy efficient and environment friendly ***-doped two-dimensional materials are highly promising as NRR ***,the interaction between doped boron and matrix materials on NRR catalytic performance is still unclear,which is limiting the development of catalysts containing boron for ***,NRR on different boron-doped twodimensional(2D)materials was explored by first principle *** is found that adsorption energy of intermediate*NNH(E*NNH)can be used as a descriptor to characterize the catalytic activity for ***-adsorbed black phosphorus(B-BP)is demonstrated showing excellent NRR catalytic activity and suppressing hydrogen evolution *** is disclosed that the excellent catalytic performance of boron-doped structures comes from a proper quantitatively electron transfer(0.8e)between nitrogen in*NNH and the active site boron *** work not only established a descriptor for NRR catalytic activity on B-doped 2D materials,but also screened out a potential NRR *** importantly,the intrinsic reason and mechanism of high catalytic activity of boron-doped structures were *** work provides a design principle for exploring high-performance NRR electrocatalysts containing boron.

关键词： Electrocatalytic nitrogen reduction reaction Boron-doped two-dimensional materials Descriptor Density functional theory

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Integrated electrocatalysts derived from metal organic frameworks for gas-involved reactions

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Nano Materials Science 2023年第2期5卷 161-176页

作者： Yuke Song Wenfu Xie Mingfei Shao Xue Duan State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing100029China

Integrated electrocatalysts(IECs)containing well-defined functional materials directly grown on the current collector have sparked increasing interest in the fields of electrocatalysis owing to efficient activity,high stability and the fact that they are easily assembled into ***,metal organic frameworks(MOFs)provide a promising platform for constructing advanced IECs because of their properties of low cost,large surface area and efficient structural *** this review,the design principles of state-of-the-art IECs based on MOFs are presented,including by hydrothermal/solvothermal,template-directed,electrospinning,electrodeposition and other *** high performance of MOF-derived IECs has also been demonstrated in electrocatalytic gasinvolved *** is promising for green energy storage and *** structure-activity relationship and performance improvement mechanism of IECs are uncovered by discussing some in situ technologies for ***,we provide an outlook on the challenges and prospects in this booming field.

关键词： Integrated electrocatalyst Metal organic framework Structure-activity relationship Gas-involved reaction

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Photochemical Radical Cascade 6-endo Cyclization of Dienes withα-Carbonyl Bromides for the Synthesis of Six-Membered Benzo-Fused Lactams

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Chinese Journal of Chemistry 2024年第19期42卷 2323-2328页

作者： Jia-Li Sui Yang Guo Bi-Quan Xiong Ke-Wen Tang Peng-Fei Huang Yu Liu Jin-Heng Li Department of Chemistry and Chemical Engineering Hunan Institute of Science and TechnologyYueyangHunan 414006China State Key Laboratory Base of Eco Chemical Engineering College of Chemical EngineeringQingdao University of Science and TechnologyQingdaoShandong 266042China

Comprehensive Summary A novel visible-light-induced radical cascade 6-endo cyclization of dienes(N-(2-vinylphenyl)acryl amides)is developed utilizingα-carbonyl bromides as alkyl *** approach affords an efficient way for synthesizing six-membered benzo-fused lactam derivatives with chemo-and regio-selectivity and good functional group ***,secondary,and tertiary bromides are well-compatible with this cascade cyclization reaction.

关键词： Visible-light-induced reaction Cyclization Transition-metal-free Nitrogen heterocycles |α-Carbonyl bromides Lactams Alkylation Radicalreactions Reduction

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Integration of Desulfurization and Lithium-Sulfur Batteries Enabled by Amino-Functionalized Porous Carbon Nanofibers

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Energy & Environmental Materials 2023年第2期6卷 334-343页

作者： Minghui Sun Xuzhen Wang Yong Li Zongbin Zhao Jieshan Qiu State Key Lab of Fine Chemicals School of Chemical EngineeringLiaoning Key Lab for Energy Materials and Chemical EngineeringFaculty of ChemicalEnvironmental and Biological Science and TechnologyDalian University of TechnologyDalian 116024China College of Chemical Engineering Beijing University of Chemical TechnologyBeijing 100029China

Hydrogen sulfide(H_(2)S)is an industrial exhausted gas that is highly toxic to humans and the *** desulfurization and fabrication of cathode materials for lithium-sulfur batteries(LSBs)can solve this issue with a double ***,the amino-functionalized lotus root-like carbon nanofibers(NH_(2)-PLCNFs)are prepared by the amination of electrospinning carbon nanofibers under dielectric barrier discharge *** catalytic oxidation of H_(2)S to elemental sulfur(S)is achieved over the metalfree NH_(2)-PLCNFs catalyst,and the obtained composite S@NH_(2)-PLCNFs is further used as cathode in ***_(2)-PLCNFs enable efficient desulfurization(removal capacity as high as 3.46 g H_(2)S g^(−1) catalyst)and strongly covalent stabilization of S on modified carbon *** equipped with S@NH_(2)-PLCNFs deliver a high specific capacity of 705.8 mA h g^(−1) at 1 C after 1000 cycles based on the spatial confinement and the covalent stabilization of electroactive materials on amino-functionalized porous carbon *** is revealed that S@NH_(2)-PLCNFs obtained by this kind of chemical vapor deposition leads to a more homogeneous S distribution and superior electrochemical performance to the sample S/NH_(2)-PLCNF-M prepared by the traditional molten *** work opens a new avenue for the combination of environment protection and energy storage.

关键词： amino-functionalization desulfurization lithium-sulfur batteries porous carbon nanofiber sulfur immobilization

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Self-supported ultrathin NiCo layered double hydroxides nanosheets electrode for efficient electrosynthesis of formate

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Journal of Energy Chemistry 2023年第10期85卷 267-275,I0008页

作者： Haoyuan Chi Jianlong Lin Siyu Kuang Minglu Li Hai Liu Qun Fan Tianxiang Yan Sheng Zhang Xinbin Ma Key Laboratory for Green Chemical Technology of Ministry of Education Collaborative Innovation Centre of Chemical Science and EngineeringSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China

Electrochemical CO_(2)reduction into energy-carrying compounds,such as formate,is of great importance for carbon neutrality,which however suffers from high electrical energy input and liquid products ***,we fabricated self-supported ultrathin NiCo layered double hydroxides(LDHs)electrodes as anode for methanol electrooxidation to achieve a high formate production rate(5.89 mmol h^(-1)cm^(-2))coupled with CO_(2)electro-reduction at the cathode.A total formate faradic efficiency of both anode for methanol oxidation and cathode for CO_(2)reduction can reach up to 188%driven by a low cell potential of only 2.06 V at 100 mA cm^(-2)in membrane-electrode assembly(MEA).Physical characterizations demonstrated that Ni^(3+)species,formed on the electrochemical oxidation of Ni-containing hydroxide,acted as catalytically active species for the oxidation of methanol to ***,DFT calculations revealed that ultrathin LDHs were beneficial for the formation of Ni^(3+)in hydroxides and introducing oxygen vacancy in NiCo-LDH could decrease the energy barrier of the rate-determining step for methanol *** work presents a promising approach for fabricating advanced electrodes towards electrocatalytic reactions.

关键词： CO_(2)reduction Methanol oxidation reaction Formate Layered double hydroxides Oxygen vacancies

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