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Rational modulation of fluorophosphate cathode by anionic groups to reduce the polarization behavior for fast-charging sodium-ion batteries

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Journal of Energy chemistry 2025年第1期100卷 509-521页

作者： Xinyuan Wang fan Zhang Xingyu Zhou Qian Wang changyu liu Yangyang liu Hui Wang Xiaojie liu Key Laboratory of Synthetic and Natural functional Molecule of the Ministry of Education College of Chemistry & Materials Science Northwest University

Na3V2（PO4）2O2f （VP） is recognized as a promising cathode material for sodium-ion batteries due to its stable structural framework and high specif.c.*** functional theory （DfT） and finite element simulations show that incorporating SO42-into VP decreases its band gap,lowers the migration energy barrier,and ensures a uniform Na+concentration gradient and stress distribution during charge and discharge ***,the average Na+diffusion coeff.c.ent of Na3V2（PO4）1.95（SO4）0.05O2f（VPS-1） is roughly double that of VP,leading to enhanced rate capability (80 c,75.5 mAh g-1) and cycling stability (111.0 mAh g-1capacity after 1000 cycles at 10 c current density) for ***-1 exhibits outstanding fast-charging capabilities,achieving an 80%state of.c.arge in just 8.1 *** assembled VPS-1//SbSn/NPc full cell demonstrated stable cycling over 200 cycles at a high 5 c current,maintaining an average coulombic eff.c.ency of 95.35%.

关键词： Anionic group modulation Polarization behavior fast-charging Sodium-ion battery fluorophosphate cathode

Low-cost and fluoride-free synthesis of MfI zeolite nanosheets with enhanced stability for benzene alkylation with ethanol

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Journal of Energy chemistry 2025年第1期100卷 458-468页

作者： Peng Zhu cun liu Yiren Yu Guoshu Gao Yumeng Zhao Xiongfu Zhang Guodong liu Guohui Yang State Key Laboratory of fine chemicals School of Chemical Engineering Dalian University of Technology State Key Laboratory of.c.talysis Dalian Institute of Chemical Physics Chinese Academy of Sciences

Zeolite nanosheets with a short b-axis thickness are highly desirable in lots of.c.talytic reactions due to their reduced diffusion resistance. Nevertheless, conventional synthesis methods usually require expensive structure-directing agents(SDAs), pricey raw materials, and eco-unfriendly fluorine-containing additives. Here, we contributed a cost-eff.c.ive and fluoride-free synthesis method for synthesizing high-quality MfI zeolite nanosheets through a Silicalite-1(Sil-1) seed suspension and urea cooperative strategy, only with inexpensive colloidal silica as the Si source. Our approach was eff.c.ive for synthesizing both Sil-1 and aluminum-containing ZSM-5 nanosheets. By optimizing key synthesis parameters,including seed aging time, seed quantity, and urea concentration, we achieved precise control over the crystal f.c. aspect ratio and b-axis thickness. We also revealed a non-classical oriented nanosheet growth mechanism, where Sil-1 seeds induced the formation of quasi-ordered precursor particles, and the(010)crystal planes of these particles f.c.litated urea adsorption, thereby promoting c-axis-oriented *** obtained ZSM-5 nanosheets exhibited exceptional catalytic performance in the benzene alkylation with ethanol, maintaining stability for over 500 h, which is 5 times longer than traditional ZSM-5 catalysts. furthermore, large-scale production of ZSM-5 nanosheets was successfully carried out in a 3 L highpressure autoclave, yielding samples consistent with those from laboratory-scale synthesis. This work marks a signif.c.nt step forward in the sustainable and eff.c.ent production of MfI nanosheets using inexpensive and environmentally friendly raw materials, offering the broad applicability in catalysis.

关键词： MfI zeolite ZSM-5 Nanosheets Scale-up synthesis Aromatic alkylation

Synthesis of faveolate open-structured Ru-N/c cathode catalyst with high bifunctional activity for rechargeable quasi-solid-state Li-O_(2)batteries

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Nano Research 2025年第1期18卷 351-361页

作者： Tie liu School of.c.emistry and chemical Engineering Heze UniversityHeze 274015China

The constituents and geometric design of.c.thodic electrocatalyst to achieve high activity and durability are eff.c.ive but challenging for the development of high-performance Li-O_(2)*** study employs a mild solution precipitation method followed by thermolysis to construct a faveolate open-structured Ru-N/c matrix with a loosely braided network morphology as a bifunctional *** details prove that this hybrid structure is composed of ultrafine Ru globular nanoparticles(ca.2 nm)coated with an N-enriched carbon film and exhibits a valuable beehive through-hole character for rapid mass transport during oxygen redox *** synergistic eff.c. of open-structured and reticular network matrix with metal-N4 coordination induces asymmetric charge distributions with moderate adsorption/desorption behaviour with oxygen ***,this particular Ru-N/c matrix cathode provides a promising Li_(2)O_(2)accommodation space and exhibits superior electrochemical performance in terms of a positive discharge plateau and low charge ***,the assembled batteries also present a high discharge capacity and a long cycle life(exceeding 283 cycles).The density functional theory(DfT)calculations also corroborate the assertion that the Ru-N/c catalyst exhibits robust electronic coupling transfer and superior bifunctional *** such,our work demonstrates that this type of open-structured Ru-N/c matrix is promising for fabricating high-performance quasi solid-state Li-O_(2)batteries.

关键词： ruthenium nitride nitrogen-doped carbon electrocatalyst Li-O_(2)battery

Multi-layer multi-pass friction rolling additive manuf.c.uring of Al alloy:Toward complex large-scale high-performance components

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 425-438页

作者： Haibin liu Run Hou chenghao Wu Ruishan Xie Shujun chen college of Mechanical&Energy Engineering Beijing University of TechnologyBeijing 100124China chongqing Research Institute of Beijing University of Technology Chongqing 401121China

At present,the emerging solid-phase friction-based additive manuf.c.uring technology,including friction rolling additive man-uf.c.uring(fRAM),can only manuf.c.ure simple single-pass *** this study,multi-layer multi-pass fRAM-deposited alumin-um alloy samples were successfully prepared using a non-shoulder tool *** material flow behavior and microstructure of the over-lapped zone between adjacent layers and passes during multi-layer multi-pass fRAM deposition were studied using the hybrid 6061 and 5052 aluminum *** results showed that a mechanical interlocking structure was formed between the adjacent layers and the adja-cent passes in the overlapped center *** friction and rolling of the tool head led to different degrees of lateral flow and plastic deformation of the materials in the overlapped zone,which made the recrystallization degree in the left and right edge zones of the over-lapped zone the highest,followed by the overlapped center zone and the non-overlapped *** tensile strength of the overlapped zone exceeded 90%of that of the single-pass deposition *** is proved that although there are uneven grooves on the surf.c. of the over-lapping area during multi-layer and multi-pass deposition,they can be filled by the flow of materials during the deposition of the next lay-er,thus ensuring the dense microstructure and excellent mechanical properties of the overlapping *** multi-layer multi-pass fRAM deposition overcomes the limitation of deposition width and lays the foundation for the future deposition of large-scale high-performance components.

关键词： aluminum alloy additive manuf.c.uring solid-state friction stir welding multi-layer multi-pass

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Highly conductive and stable iodine doped argyrodite electrolyte for all-solid-state lithium batteries

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Journal of Energy chemistry 2025年第1期100卷 50-58页

作者： Gaozhan liu Jing Zhang Jing Yang Jinghui chen Xingyue Xiao Xiayin Yao Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences

Lithium argyrodites with high ionic conductivity and low cost are considered as one of the most prospective solid electrolytes for all-solid-state lithium ***,the poor chemical stability and compatibility with lithium metal limit their ***,Li5.4PS4.4cl1.4I0.2solid electrolyte with high ionic conductivity of 11.49 m S cm-1and improved chemical stability is synthesized by iodine *** ultra-thin Li5.4PS4.4cl1.4I0.2membrane with thickness of 10μm can be obtained by wet coating process,exhibiting a high ionic conductivity of 2.09 mS cm-1and low areal resistance of 1.17Ω***,iodine doping could in-situ form LiI at the lithium/electrolyte interf.c. and improve the critical current density of Li5.4PS4.4cl1.6from 0.8 to 1.35 mA *** resultant LicoO2/Li5.4PS4.4cl1.4I0.2/Li battery shows excellent cycling stability at 1 c,with a reversible specif.c.capacity of 110.1 mA h g-1and a retention of 80.5% after 1000 *** addition,the assembled LicoO2/Li5.4PS4.4cl1.4I0.2membrane/Li pouch cell delivers an initial discharge capacity of 110.4 mA h g-1and 80.5% capacity retention after 100 cycles.

关键词： Argyrodite electrolytes Iodine doping Ionic conductivity Stability All-solid-state lithium battery

Hierarchical hollow microspheres assembled from carbon nanosheets integrated with molybdenum carbide nanoparticles for boosting microwave absorption properties

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Nano Research 2025年第1期18卷 10-20页

作者： Zongsheng chen Yahui Wang Yi liu Zhigang Li Xiangyin Lv Liping liu Yajing chang Jiaming Shi Xiao Zhang State Key Laboratory of Pulsed Power Laser Technology School of Electronic EngineeringNational University of Defense TechnologyHefei 230037China Anhui Provincial Laboratory of Advanced Laser Technology School of Electronic EngineeringNational University of Defense TechnologyHefei 230037China centre for Environmental and Energy Nanomaterials Anhui Key Laboratory of Nanomaterials and NanotechnologyCAS Centre for Excellence in NanoscienceInstitute of Solid State PhysicsHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China

Hierarchical hollow structure has demonstrated potential for enhancing electromagnetic(EM)attenuation and improving impedance matching,garnering signif.c.nt attention for ***,we have successfully implemented compositional and structural engineering to fabricate hollow Mo2c/c microspheres with controllable composition by coupling interaction between dopamine hydrochloride and ammonium *** the synergistic eff.c. of.c.mposition and hollow structure,the strongest reflection loss intensity and broadest eff.c.ive absorption of the optimized sample reach-70.2 dB and 6.2 GHz,*** formation of hollow heterogeneous structures not only favors impedance matching feature,but also generates considerable contribution to EM attenuation ***,radar cross-section simulation data indicate that hollow Mo2c/c microspheres with compositional optimization and heterogeneous structures have broad prospects for practical applications.

关键词： electromagnetic absorption Mo2c/c microwave absorption hollow structure

Maximizing biomass utilization: An integrated strategy for coproducing multiple chemicals

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Journal of Energy chemistry 2025年第1期100卷 180-191页

作者： Byeongchan Ahn Sua Jo Jonggeol Na J.Jay liu Young-Ju Kim Wangyun Won Department of.c.emical and Biological Engineering Korea University Department of.c.emical Engineering (Integrated process) Kyung Hee University Department of.c.emical Engineering and Materials Science Ewha Womans University Department of.c.emical Engineering Pukyong National University Resources Engineering Plant Research Department Korea Institute of Geoscience and Mineral Resources

Lignocellulosic biomass is one of the viable solutions to alleviate the global warming. However, the limited utilization of biomass majorly f.c.sed on cellulose and hemicellulose restricts the economic and environmental feasibilities. To cope with this issue, we proposed an integrated process of.c.-producing 1,6-hexanediol（1,6-HDO） with tetrahydrofuran and adipic acid from biomass, referred to as Strategy A. To compare the impacts of lignin upgrading and feedstock, Strategy B, which co-produces tetrahydrofuran alone, and Strategy c, which is the traditional route to produce 1,6-HDO from fossil fuels, were used. Heat networks are also designed to reduce operating costs and indirect carbon emissions due to energy consumption, saving 87% and 83% of the heat and cooling requirements, respectively, in Strategy A. The market competitiveness of Strategy A was evaluated by determining the minimum selling price through techno-economic analysis, and sustainability was thoroughly investigated by quantifying the environmental impacts through both midpoint and endpoint life-cycle assessments（LcAs）.Strategy A was found to be the most favorable both economically（USRDScHARDOLLAR3,402/ton） and environmentally（-26.9 kg cO2eq.）. This indicates that lignin valorization is not only economically but also environmentally preferred. finally, changes in economic and environmental feasibilities depending on economic, process, and environmental parameters were investigated using sensitivity and uncertainty analyses. The results of these analyses provide valuable insight into bio-based chemical production.

关键词： Biorefinery carbon mitigation climate change Global warming Lignin utilization Bioeconomy

continuous high-temperature rapid nanomanuf.c.uring of electrocatalysts

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Nano Research 2025年第1期18卷 225-235页

作者： Xiaoyang Wang Ziyi Luo Baihua cui Ziqi fu Yanchang liu Weidi liu Jia Ding Jianrong Zeng Yanan chenWenbin Hu School of Materials Science and Engineering Tianjin UniversityTianjin 300350China Australian Institute for Bioengineering and Nanotechnology The University of QueenslandSt.LuciaBrisbane 4072Australia Shanghai Synchrotron Radiation f.c.lity Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China

Encapsulating metal nanoparticles in carbon shells(Metal@c)to enhance catalytic activity and stability has been certified ***,most existing methods for preparing Metal@c are complex,time-consuming,and lack of *** this study,a novel method that couples the high-temperature shock(HTS)with ultrasonic spray pyrolysis is reported,which can realize f.c.le and scalable production of various Metal@c through the pyrolysis of glucose and metal chloride *** proposed HTS ultrasonic spray pyrolysis offers several advantages,including compact size,short reaction time(~120 ms),and uniform *** the Ni@c-40 nanocomposite as an example,the ultrasmall Ni nanoparticles(~10 nm)with thin carbon protective shells(~2 nm)are uniformly dispersed in the carbon matrix and applied for oxygen evolution reaction(OER)in alkaline *** Ni@c-40 optimized by tuning the thickness of.c.rbon shell exhibits signif.c.ntly enhanced OER activity with low overpotential of 242 mV at 10 mA·cm^(-2) and stability,which is attributed to the optimized interactions between Ni nanoparticles and carbon *** method also shows promise for continuous pyrolysis synthesis of various extreme materials at ultra-high temperatures using alternative electric heating materials.

关键词： ultrasonic spray pyrolysis high-temperature shock carbon shell oxygen evolution reaction Metal@c nanocomposite

High Strain Rate Superplasticity in a Micro-grained Al-Mg-Sc Alloy with Predominant High Angle Grain Boundaries

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Journal of Materials Science & Technology 2012年第11期28卷 1025-1030页

作者： f. c. liu Z.Y. Ma f. c. Zhang Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of SciencesShenyang 110016 China State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao 066004China

friction stir processing （fSP） was applied to extruded AI-Mg-Sc alloy to produce fine-grained microstructure with a grain size of 2.2μm. Electron backscatter diffraction （EBSD） result showed that the grain boundary misorientation distribution was very close to a random grain assembly for randomly oriented cubes. Super- plastic investigations in the temperature range of 425-500 ℃ and strain rate range of 1x100^-2-1x10 s^-1 showed that a maximum elongation of 1500% was achieved at 475 ℃ and a high strain rate of 1x100^-2-1x10 s^-1. The fSP AI-Mg-Sc exhibited enhanced superplastic deformation kinetics compared to that predicted by the constitutive relationship for superplasticity in fine-grained aluminum alloys. The origin for enhanced superplas- tic deformation kinetics in the fSP alloy can be attributed to its high fraction of high angle grain boundaries （HAGBs）. The analyses of the superplastic data and scanning electron microscopy （SEM） examinations on the surf.c.s of deformed specimens indicated that grain boundary sliding is the main superplastic deformation mechanism for the fSP AI-Mg-Sc alloy.

关键词： Superplasticity friction stir processing Aluminum Microstructure friction stir welding

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