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Recent Progress in Improving Rate Performance of Cellulose-Derived Carbon materials for Sodium-Ion Batteries

Nano-Micro Letters 2024年第8期16卷 102-147页

作者： Fujuan Wang Tianyun Zhang Tian Zhang Tianqi He Fen Ran State Key Laboratory of Advanced Processing and Recycling of Non‑Ferrous Metals Lanzhou University of TechnologyLanzhou 730050People’s Republic of China School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou 730050People’s Republic of China School of Mechanical and Electronical Engineering Lanzhou University of TechnologyLanzhou 730050People’s Republic of China

Cellulose-derived carbon is regarded as one of the most promising candidates for high-performance anode materials in sodium-ion batteries;however,its poor rate performance at higher current density remains a challenge to achieve high power density sodium-ion *** present review comprehensively elucidates the structural characteristics of cellulose-based materials and cellulose-derived carbon materials,explores the limitations in enhancing rate performance arising from ion diffusion and electronic transfer at the level of cellulose-derived carbon materials,and proposes corresponding strategies to improve rate performance targeted at various precursors of cellulose-based *** review also presents an update on recent progress in cellulose-based materials and cellulose-derived carbon materials,with particular focuses on their molecular,crystalline,and aggregation ***,the relationship between storage sodium and rate performance the carbon materials is elucidated through theoretical calculations and characterization ***,future perspectives regarding challenges and opportunities in the research field of cellulose-derived carbon anodes are briefly highlighted.

关键词： Cellulose Hard carbon Anode materials Rate performance Sodium-ion batteries

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Friction and wear behaviour of friction-induced crystallinity of polyaryl ether ketone (PAEK)

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Wear 2025年 576-577卷

作者： Li, Mengjiao Zhang, Ke Ma, Shengqi Liu, Gang Yao, Jianan Liu, Hao Center for Advanced Low-Dimension Materials State Key Laboratory of Advanced Fiber Materials College of Materials Science and Engineering Donghua University Shanghai201620 China Laboratory of High Performance Plastics Ministry of Education National & Local Joint Engineering Laboratory for Synthesis Technology of High Performance Polymer College of Chemistry Jilin University Changchun130012 China Shandong Institute of Nonmetallic Materials Jinan250031 China Institute of Advanced Technology and Equipment Beijing University of Chemical Technology Beijing100029 China

Poly aryl ether ketone (PAEK) is increasingly attractive as an essential matrix for its remarkable comprehensive performance. However, studies on the correlation between crystallinity and tribological properties of PAEK are still questionable. This study aimed to correlate the crystallinity of PAEK with its tribological properties and to analyze the behavior of friction-induced crystallization of PAEK in its nearly amorphous state. Herein, almost amorphous PAEK-A and semicrystalline PAEK were fabricated via injection molding, and the behavior of friction-induced crystallization of PAEK was investigated under dry sliding conditions at a pressure of 50 N and a velocity of 0.21 m/s. According to the results, PAEK-4A exhibited the lowest wear rate of 28.8 × 10−6 (mm3/Nm) of four PAEK-A in different flowabilities. The crystallinity of PAEK-4A wear debris was 33.9 %, which increased by 25.3 % compared with the initial samples. The intensity ratio of Raman characteristic peaks to characterize crystallinity variation also demonstrated the increase of crystallinity on the wear track (1.6–2.7). The crystallization behavior of PAEK-A wear debris and the crystalline behavior of PAEK-A triggered by the friction process played a positive role in improving the wear resistance of PAEK-A. This research guides the influence of various parameters on the friction performance of high-performance PAEK. © 2025 Elsevier B.V.

关键词： Tribology

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Eutectic Electrolyte with Unique Solvation Structure for High-Performance Zinc-Ion Batteries (vol 62, 10.1002/anie.202303744, 2023)

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ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 2023年第22期62卷 e202206717-e202206717页

作者： Geng, L. Meng, J. Wang, X. Han, C. Han, K. Xiao, Z. Huang, M. Xu, P. Zhang, L. Zhou, L. Mai, L. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P. R. China Department of Physical Science & Technology School of Science Wuhan University of Technology Wuhan 430070 P. R. China Hubei Longzhong Laboratory Xiangyang 441000 P. R. Hubei China

Zinc-ion batteries (ZIB) present great potential in energy storage due to low cost and high safety. However, the poor stability, dendrite growth, and narrow electrochemical window limit their practical application. Herein, we develop a new eutectic electrolyte consisting of ethylene glycol (EG) and ZnCl2 for dendrite-free and long-lifespan ZIBs. The EG molecules participate in the Zn2+ solvation via coordination and hydrogen-bond interactions. Optimizing the ZnCl2/EG molar ratio (1 : 4) can strengthen intermolecular interactions to form [ZnCl(EG)]+ and [ZnCl(EG)2]+ cations. The dissociation–reduction of these complex cations enables the formation of a Cl-rich organic–inorganic hybrid solid electrolyte interphase film on a Zn anode, realizing highly reversible Zn plating/stripping with long-term stability of ≈3200 h. Furthermore, the polyaniline||Zn cell manifests decent cycling performance with ≈78 % capacity retention after 10 000 cycles, and the assembled pouch cell demonstrates high safety and stable capacity. This work opens an avenue for developing eutectic electrolytes for high-safety and practical ZIBs.

关键词： Deep Eutectic Solvents Dendrite-Free Zn Anodes Eutectic Electrolytes Solvation Structure Zinc-Ion Batteries

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Novel implantable devices delivering electrical cues for tissue regeneration and functional restoration

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Medicine in Novel technology and Devices 2022年第4期16卷 70-78页

作者： Liu Wang Kuntao Chen Yubo Fan Lan Yin Key Laboratory of Biomechanics and Mechanobiology of Ministry of Education Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringAnd with the School of Engineering MedicineBeihang UniversityBeijing100083PR China School of Materials Science and Engineering The Key Laboratory of Advanced Materials of Ministry of EducationState Key Laboratory of New Ceramics and Fine ProcessingCenter for Flexible Electronics TechnologyTsinghua UniversityBeijing100084PR China

Millions of people suffer from tissue diseases and organ dysfunction,such as bone or nerve defects,spinal cord injuries and arrhythmia,which often leads to morbidity and *** stimulation as a promising nonpharmacological technique has been proven to be effective in promoting tissue regeneration and functional ***,existing clinical electrical therapies are often limited to intraoperative window or percutaneous stimulation that suffer from insufficient time frame and potential infection *** overcome these challenges,innovative electrical stimulation implants with miniaturized,self-powered,flexible or biodegradable features have been *** review summarizes recent advances of novel materials strategies and device schemes for tissue regeneration and/or functional restoration of bones,nerves,gastrointestinal tracts,cardiac systems,*** on future directions of electrical stimulation devices are given at the end.

关键词： electrical stimulation functional

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Flame-retardant Cotton Fabric based on Electrostatic Layer-by-layer Assembly of Vermiculite

Flame-retardant Cotton Fabric based on Electrostatic Layer-b...

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作者： Hong-Bin Cheng Xiao-Shu Liu Shi-Li Xiao School of Textile Science and Engineering Wuhan Textile University State Key Laboratory of New Textile Materials & Advanced Processing Technology

Flame-retardant cotton fabric, in clothing and decoration, can reduce the damage in a fire. This study reports a facile way to prepare vermiculite-assembled cotton fabrics using layer by layer assemble technique. The vermiculite-assembled cotton fabrics synthesized are characterized by SEM, FTIR, Instron and a vertical inflammability test. The results show that vermiculite assembled on cotton fabrics could improve the mechanical property and endow the fabric with the good flame-retardant property.

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Three-Dimensional Porous Polyimide Anode For High-Rate Lithium Ion Batteries

SSRN

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SSRN 2023年

作者： Zhang, Qiuyitong Wei, Zijie Xu, Yuexin Lv, Ning Li, Hanyang Tian, Tian Wang, Yadong Tang, Haolin Zhao, Xue State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen Valley Foshan528200 China Xupu Central Primary School Yangzhou211400 China

Polymeric electrode materials suffer from poor electrical conductivity and slow transport kinetics, especially poor performance at high current density. Herein, a polyimide electrode structure with 3D ordered interconnected gradient pores is proposed for improving the lithium ion transport efficiency. The homogeneous mixed PMTA-PMMA composite is prepared by a simple one-pot method, and then the PMMA (polymethyl methacrylate) spherical porogenic agent is removed from it while synthesizing the polyimide material at high temperature to form a low curvature gradient pore structure. The large pores in the electrode can enhance the ion transport ability and improve the electrolyte infiltration rate, and the small pores can improve the active specific surface area and guide the deposition of lithium ions. The high specific capacity of 907mAh/g can be maintained even after 1000 cycles at 5A/g, which is about 3 times of the specific capacity of un-pored electrode material. This porous material with high active area and porosity is a potential electrode candidate for ultra-fast charging and discharging in lithium ion batteries, with high specific capacity and excellent cycling performance. © 2023, The Authors. All rights reserved.

关键词： Polyimides

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Electron transfer kinetics in CdS/Pt heterojunction photocatalyst during water splitting

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Chinese Journal of Catalysis 2022年第10期43卷 2530-2538页

作者： Jianjun Zhang Gaoyuan Yang Bowen He Bei Cheng Youji Li Guijie Liang Linxi Wang Laboratory of Solar Fuel Faculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430074HubeiChina Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and ScienceXiangyang 441053HubeiChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina College of chemistry and Chemical engineering Jishou UniversityJishou 416000HunanChina

Noble metal cocatalysts have shown great potential in boosting the performance of CdS in photocatalytic water ***,the mechanism and kinetics of electron transfer in noble-metal-decorated CdS during practical hydrogen evolution is not clearly ***,Pt-nanoparticle-decorated CdS nanorods(CdS/Pt)are utilized as the model system to analyze the electron transfer kinetics in CdS/Pt *** femtosecond transient absorption spectroscopy,three dominating exciton quenching pathways are observed and assigned to the trapping of photogenerated electrons at shallow states,recombination of free electrons and trapped holes,and radiative recombination of locally photogenerated electron-hole *** introduction of Pt cocatalyst can release the electrons trapped at the shallow states and construct an ultrafast electron transfer tunnel at the CdS/Pt *** CdS/Pt is dispersed in acetonitrile,the lifetime and rate for interfacial electron transfer are respectively calculated to be~5.5 ps and~3.5×10^(10) s^(−1).The CdS/Pt is again dispersed in water to simulate photocatalytic water *** lifetime of the interfacial electron transfer decreases to~5.1 ps and the electron transfer rate increases to~4.9×10^(10) s^(−1),confirming that Pt nanoparticles serve as the main active sites of hydrogen *** work reveals the role of Pt cocatalysts in enhancing the photocatalytic performance of CdS from the perspective of electron transfer kinetics.

关键词： Femtosecond transient absorption spectroscopy Photocatalytic water splitting CdS Electron transfer kinetics Trap state

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Reply to Comments on “Efficient full-path optical calculation of scalar and vector diffraction using the Bluestein method”

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Light(Science & Applications) 2021年第1期10卷 3-4页

作者： Yanlei Hu Zhongyu Wang Xuewen Wang Shengyun Ji Chenchu Zhang Jiawen Li Wulin Zhu Dong Wu Jiaru Chu CAS Key Laboratory of Mechanical Behavior and Design of Materials Key Laboratory of Precision Scientific Instrum entation of Anhui Higher Education InstitutesDepartm ent of Precision Machinery and Precision InstrumentationUniversity of Science and Techno logy of China230026 HefeiChina Departm ent of Mechanical Engineering and Departm ent of Civil and Environm ental Engineering Massachusetts Institute of TechnologyCam bridgeMA 02139USA State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and EngineeringWuhan University of Technology430070 WuhanChina Institute of Industry and Equipment Technology Hefei Uniersity of Technology230009 HefeiChina

Dear Editor,In *** present an efficient full-path optical calculation by using the Bluestein method.A real optical apparatus for laser processing,imaging,or optical tweezing normally involves diverse optical lenses with different physical and numerical apertures(NA).In such applications,the optical path is usually tortuous and *** assist in the design,evaluation,and alignment of optical instruments,it is advantageous to retrieve the optical field in an arbitrary position along the entire optical path,which is termed the full-path calculation in our paper,with sufficient accuracy and *** particular,high flexibility is required to accommodate the mismatch between optical apertures of different components in the optical *** present a fullpath optical calculation method by adopting the Bluestein method to address this realistic demand.

关键词： optical calculation method

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Elemental Distribution and Site Occupancy in a Co-Ni-Al-Ti-Ta-W Superalloy

SSRN

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SSRN 2024年

作者： Zhang, Jiachen Lu, Wenjie Lu, Fan Na, Qingze Yan, Pan Su, Haijun Zhang, Guojun School of Materials Science and Engineering Xi'an University of Technology Xi’an710048 China State Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi’an710072 China State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing100083 China

γ′-precipitate strengthened cobalt-based superalloys show promise for higher temperature-capability over nickel-based superalloys due to higher melting temperatures. This study investigates a multicomponent CoNi-based superalloy with composition 54Co-30Ni-9Al-1Ta-4Ti-2W (at.%) in terms of elemental partitioning and site occupancy. APT reveals preferential partitioning of Ni, Al, Ti, Ta and W to the γ′-precipitate and Co to the γ-matrix. HAADF-STEM and EDS along the [001] zone axis of γ′-precipitate with L12 structure indicate that Co, Ni substitute on A-sites, while Al, Ti, Ta, W prefer the B-sites. DFT calculations further confirm the results of partitioning behaviors and site preferences. Clarifying elemental partitioning and site occupancy provides insights into alloy design principles for advanced CoNi-based superalloys. © 2024, The Authors. All rights reserved.

关键词： Superalloys

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Effect of Y2O3-Al2O3 sintering additive content on the properties of porous Si3N4 ceramics prepared by digital light processing using Polymethyl methacrylate as pore-forming agent

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Ceramics International 2025年

作者： Wu, Ya-Ru Huang, Hai-Lu Tian, Chong Wu, Jia-Min Liu, Chun-Lei Guo, Lin Cai, Wei-Hao Yang, Ling-Hao Liu, Zhi-Wei Zhang, Yang-Ze Luo, Zhi-Cong Su, Sen Shi, Yu-Sheng State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan430074 China Engineering Research Center of Ceramic Materials for Additive Manufacturing Ministry of Education Wuhan430074 China Wenzhou Key Laboratory of Microwave Communication Materials and Devices Wenzhou Advanced Manufacturing Institute of HUST Wenzhou325035 China

Porous Si3N4 ceramics have been widely used in aerospace and military industry due to their excellent mechanical properties. Digital light processing (DLP) technology offers an effective route to prepare porous Si3N4 ceramics. In this paper, porous Si3N4 ceramics were successfully fabricated by DLP technology using Polymethyl methacrylate (PMMA) as pore-forming agent, and the effects of the sintering additive (Y2O3-Al2O3) content on the properties of Si3N4 ceramic slurry, green bodies and sintered parts were systematically studied. With the increase of sintering additive content from 2 wt% to 14 wt%, the viscosity of the Si3N4 slurry decreased and the cure depth of that increased. It was found that Y2O3 in sintering additives could induce the growth of β-Si3N4 grain and the fracture mode of Si3N4 ceramics changed from transgranular fracture to intergranular fracture gradually. Additionally, the porosity of porous Si3N4 ceramics first decreased and then increased, while the bulk density, flexural strength of the sintered samples first increased and then decreased with the increase of the sintering additive content. When the content of Y2O3-Al2O3 sintering additives was 10 wt%, the flexural strength of the Si3N4 ceramics reached the maximum value of 459.38 MPa. This research is of great significance for the mechanical property improvement of porous Si3N4 ceramics prepared by DLP. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Machinability

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