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Electrochemical behavior of Mg-Al-Zn-Ga-In alloy as the anode for seawater-activated battery

Journal of materials science & technology 2020年第6期41卷 33-42页

作者： Jiarun Li Zhuoyuan Chen Jiangping Jing Jian Hou Key Laboratory of Marine Environmental Corrosion and Bio-fouling Institute of OceanologyChinese Academy of Sciences7 Nanhai RoadQingdao266071China State Key Laboratory for Marine Corrosion and Protection Luoyang Ship Material Research InstituteWenhai RoadQingdao266237China Center for Ocean Mega-Science Chinese Academy of Sciences7 Nanhai RoadQingdao266071China Open Studio for Marine Corrosion and Protection Pilot National Laboratory for Marine Science and Technology(Qingdao)No.1 Wenhai RoadQingdao266237China

The effect of indium alloying on the corrosion and discharge behaviors of Mg-Al-Zn-Ga alloys is investigated via materials characterization,immersion test and electrochemical *** results indicate that indium alloying can effectively modify the distribution of intermetallic phases in Mg matrix via promoting the segregation of Al in the form of Mg17Al12 in *** addition of indium can effectively activate Mg-Al-Zn-Ga alloy evidenced by increased hydrogen evolution volume and weight loss,negative shift of corrosion and discharge potentials,increase of corrosion current density,decrease of polarization resistance and promoted Faradic ***,excessive indium alloying(2.0 wt.%)would strikingly deteriorate the electrochemical performance of Mg-Al-Zn-Ga anode due to the exorbitant active *** Mg-6 wt.%Al-3 wt.%Zn-1 wt.%Ga-1 wt.%In in as-cast state with acceptable corrosion rate and desirable discharge performance is a low cost,non-toxic and well-performance magnesium alloy,which is a promising anode materials for seawater-activated batteries.

关键词： Magnesium alloy Corrosion Electrochemical behavior Anode Seawater-activated battery

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Two-dimensional topological platinum telluride superstructures with periodic tellurium vacancies

arXiv

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arXiv 2023年

作者： Xu, Xin Wang, Xuechun Yu, Shuming Wang, Chenhui Liu, Guowei Li, Hao Yang, Jiangang Li, Jing Sun, Tao Hai, Xiao Li, Lei Liu, Xue Zhang, Ying Zhang, Weifeng Zhang, Quan Wang, Kedong Xu, Nan Ma, Yaping Ming, Fangfei Cui, Ping Lu, Jiong Zhang, Zhenyu Xiao, Xudong State Key Lab of Optoelectronic Materials and Technologies Guangdong Province Key Laboratory of Display Material and Technology School of Electronics and Information Technology Sun Yat-sen University Guangzhou510275 China School of Physical Science and Technology Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education Wuhan University Wuhan430072 China School of Future Technology Henan Key Laboratory of Quantum Materials and Quantum Energy Henan University Zhengzhou450046 China University of Science and Technology of China Hefei230026 China Institute for Advanced Studies Wuhan University Wuhan430072 China Department of Physics Southern University of Science and Technology Shenzhen518055 China Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry Beihang University Beijing100191 China School of Chemical Engineering Xi'an Key Laboratory of Special Energy Materials Northwest University Xi’an710069 China Department of Chemistry National University of Singapore Singapore117543 Singapore Core Facility of Wuhan University Wuhan430072 China Anhui Key Laboratory of Magnetic Functional Materials and Devices Institute of Physical Science and Information Technology Anhui University Anhui Hefei230601 China Institute of Quantum Materials and Physics Henan Academy of Sciences Zhengzhou450046 China College of Chemistry and Chemical Engineering Hubei Normal University Huangshi435002 China

Defect engineering in the inherently inert basal planes of transition metal dichalcogenides (TMDs), involving the introduction of chalcogen vacancies, represents a pivotal approach to enhance catalytic activity by exposing high-density catalytic metal single-atom sites. However, achieving a single-atom limit spacing between chalcogen vacancies to form ordered superstructures remains challenging for creating uniformly distributed high-density metal single-atom sites on TMDs comparable to carbon-supported single-atom catalysts (SACs). Here we unveil an efficient TMD-based topological catalyst for hydrogen evolution reaction (HER), featuring high-density single-atom reactive centers on a few-layer (7×7)-PtTe2-x superstructure. Compared with pristine Pt(111), PtTe2, and (2×2)-PtTe2-x, (7×7)-PtTe2-x exhibits superior HER performance owing to its substantially increased density of undercoordinated Pt sites, alongside exceptional catalytic stability when operating at high current densities. First-principles calculations confirm that multiple types of undercoordinated Pt sites on (7×7)-PtTe2-x exhibit favorable hydrogen adsorption Gibbs free energies, and remain active upon increasing hydrogen coverage. Furthermore, (7×7)-PtTe2-x possesses nontrivial band topologies with robust edge states, suggesting potential enhancements for HER. Our findings open up a new avenue for the development of TMD-based catalysts and exciting prospects for the exploration of topological materials in catalysis and beyond. © 2023, CC BY.

关键词： Topology

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Nano-Cu2O-loaded Paper: Green Preparation and High Visible Light Photocatalytic Performance for Formaldehyde Removal

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Paper And biomaterials 2019年第3期4卷 1-14页

作者： Lijian Sun Xin Xin Xianhui An Xueren Qian Key Laboratory of Bio-based Materials Science and Technology of Ministry of Education Northeast Forestry University

The removal of formaldehyde (HCHO) from indoor air is of great importance to reduce health risks and improve indoor air quality. In this study, nano-Cu2O-loaded paper with superior photocatalytic activity under visible light for the removal of HCHO was fabricated through a green, simple, and fast in situ synthesis method. The optimum preparation conditions for nano-Cu2O-loaded paper were as follows: 2 g (oven-dry basis) cellulose fibers, CuSO4 dosage 8 g, NaOH dosage 1.6 g, temperature 80℃, 60 min for Cu2+ absorption, and 60 min for reaction. Under the optimum conditions, the Cu2O deposition ratio approached 30% and the nano-Cu2O-loaded paper exhibited a catalytic efficiency of approximately 97% for HCHO removal. The photocatalytic capacity of nano-Cu2O-loaded paper for HCHO removal had a positive correlation with the deposition ratio of nano Cu2O particles. Excellent antibacterial property of nano- Cu2O-loaded paper against Staphylococcus aureus and Escherichia coli was also confirmed. Moreover, nano-Cu2O-loaded paper was proven to be hydrophobic.

关键词： nano-Cu2O-loaded paper in situ synthesis visible light photocatalytic activity HCHO removal

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Functionally modified zeolite powders for delivering antibacterial performance to cellulosic paper 10th

Functionally modified zeolite powders for delivering antibac...

引用

10th China Functional material technology and Industry Forum, CFMTIF 2018

作者： Lin, Yuan Xueren, Qian Key Laboratory of Bio-based Material Science and Technology of Ministry of Education Northeast Forestry University Harbin Heilongjiang Province150040 China

ISBN: (纸本)9783035714128

Zeolite powders were first treated with hydrochloric acid, then reacted with sodium chloride, and sodium zeolite (Na-Zeolite) powders were obtained. Further Antibacterial zeolite powders were prepared by loading metal ions such as, Ag+ and Zn2+, Ag+ and Cu2+, Zn2+and Cu2+, Ag+ and Cu2+and Zn2+, through ion exchange. The powders were characterized by minimum Inhibitory concentration (MIC), SEM/EDXA and XRD. Antibacterial paper with antibacterial zeolite powders as filler was fabricated. The results demonstrated that MIC of loading (Ag++Zn2+)zeolite was 125ppm against Staphylococcus aureus and Escherichia coli. MIC of loading (Ag++Cu2++Zn2+)zeolite was 62.5ppm against Candida albicans and Aspergillus Niger. By adding 6% of(Ag++Zn2+), (Ag++Cu2+), and(Ag++Cu2++Zn2+)antibacterial zeolite powders, respectively, antibacterial paper were prepared;and the antibacterial rate of these papers against Staphylococcus aureus, Escherichia coli, Candida albicans and Aspergillus Niger for 4h is close to 100%. © 2019 Trans Tech Publications Ltd, Switzerland

关键词： Ion exchange

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Corrigendum to “Preparation and property optimization of polyvinylidene fluoride composites and their research progress in self-powered sensing” [ J. Alloy. Compd. 180989]

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Journal of Alloys and Compounds 2025年 1031卷

作者： Yancheng Xu Changhong Luo Zisen Li Hailan Jin College of Materials Science and Engineering Northeast Forestry University Harbin 150040 China Key Laboratory of Bio-based Materials Science & Technology (Northeast Forestry University) Ministry of Education Harbin 150040 China

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Self-assembled Co-MOF@MXene heterostructures as bifunctional electrocatalysts for high-performance lithium-sulfur batteries

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materials Today Energy 2025年 52卷

作者： Xu-Dong Zhou Xiang-Xian Wu Hong-Jian Fu Pei-Xuan Lei Na Li Hong-Peng Li Hai-Bo Huang Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education) Northeast Forestry University Harbin 150040 PR China School of Automotive Engineering Nantong Institute of Technology Nantong 226001 PR China College of Mechanical Engineering Yangzhou University Yangzhou 225127 PR China

Lithium-sulfur (Li-S) batteries are hindered by the sluggish kinetics of polysulfide conversion and rapid capacity decay. Herein, we report a heterostructured electrocatalyst for addressing polysulfide shuttling and accelerating redox kinetics via self-assembly of cobalt-based metal-organic framework (Co-MOF, CM) nanoparticles onto MXene (MX) nanosheets. The 0D CM acts as catalytic nano-reactors for efficient polysulfide adsorption and bidirectional conversion, while the 2D MXene substrate ensures rapid electron/ion transport and structural stability. The hierarchical architecture, featuring abundant meso/macropores and strong interfacial Co-S/Ti-S interactions, synergistically suppresses polysulfide shuttling and lowers reaction barriers. The optimized CM@MX cathode delivers high-rate capability (1161.5 mAh g −1 at 0.1 C, 314.7 mAh g −1 at 5 C) and cycling stability (63% capacity retention after 250 cycles at 1 C). Mechanistic studies reveal accelerated sulfur redox kinetics enabled by dual-active sites and optimized Li 2 S nucleation/dissolution dynamics. This work provides a scalable heterostructure design paradigm for high-performance Li-S batteries.

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High-conductivity and high-ion-mobility sodium lignosulfonate-based hydrogel electrolyte for dendrite-free zinc-ion batteries

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Journal of Environmental Chemical Engineering 2025年第4期13卷

作者： Na Luo Zishuo Li Xudong Zhou Sijia Jin Yang Liu Haibo Huang Jidong Dong Dawei Zhang Pengfei Huo Key Laboratory of Bio-based Materials Science & Technology (Northeast Forestry University) Ministry of Education Harbin 150040 China College of Materials Science and Engineering Northeast Forestry University Harbin 150040 China

Rechargeable hydrogel zinc-ion batteries (ZIBs) are considered promising energy storage devices. However, the uncontrollable growth of dendrites, adverse effects at the zinc anode, and inadequate mechanical properties of the gel electrolyte have greatly restricted their practical applications. In this context, the widespread adoption of ZIBs encounters considerable challenges, such as the uncontrolled growth of zinc dendrites, undesirable parasitic reactions at the anode-electrolyte interface, and the limited mechanical strength of traditional gel-based electrolytes. To address these limitations, we have developed a novel multi-network biomass hydrogel electrolyte, called SL-10G-PSAM. This advanced biomass hydrogel incorporates amphiphilic polymer chains rich in hydrophilic and charged functional groups, synergistically combined with the unique helical structure of gelatin. This unique composition plays a crucial role in suppressing unwanted side reactions and encouraging the preferred deposition of zinc along the (002) crystallographic plane, ultimately creating a uniform and smooth zinc anode surface. The combined effects of these mechanisms effectively reduce zinc dendrite formation and lessen parasitic reactions. The SL-10G-PSAM hydrogel displays outstanding properties, including a high ionic conductivity of 10.68 mS cm −1 , an impressive zinc ion transference number of 0.68, and notable mechanical strength of 100 kPa. When used in symmetric Zn||Zn cells, the SL-10G-PSAM electrolyte allows for stable cycling for more than 1065 h. Additionally, the stable Zn negative electrode provided new insights for the Zn anode, achieving 99.04 % over 500 cycles. Furthermore, when incorporated into Zn||MnO 2 full cells, this hydrogel electrolyte enables impressive specific capacity and significantly improved cycling stability. This study presents a novel paradigm for designing advanced biomass hydrogel electrolytes that possess superior mechanical properties and ion transport

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S vacancies in 2D SnS_(2) accelerating hydrogen evolution reaction

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science China materials 2022年第7期65卷 1833-1841页

作者： Gonglei Shao Haiyan Xiang Mengjie Huang Yi Zong Jun Luo Yexin Feng Xiong-Xiong Xue Jie Xu Song Liu Zhen Zhou Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of Education School of Chemical EngineeringZhengzhou UniversityZhengzhou 450001China Institute of Chemical Biology and Nanomedicine(ICBN) State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China School of Physics and Optoelectronics Xiangtan UniversityXiangtan 411105China Institute of Functional Nano and Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123China School of Materials Science and Engineering Tianjin University of TechnologyTianjin 300384China Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices School of Physics and ElectronicsHunan UniversityChangsha 410082China

Precise manipulation of atomic defects is essential for modulating the intrinsic properties of two-dimensional(2D)*** this study,sulfur(S)atoms are accurately knocked out in the 2D basal plane of pure tin disulfide(SnS_(2)).By varying the annealing temperatures(250–350℃),SnS_(2)with different S vacancy concentrations(Vs-SnS_(2))can be *** SnS_(2)is annealed at 350℃ for 5 h,the S vacancies in the forms of single S atom and double S atoms could reach up to 30.5%.The Vs-SnS_(2)is tested in the microelectrocatalytic hydrogen evolution reaction(HER).Vs-SnS_(2)with S vacancies of 30.5%generates superior catalytic performance,with a Tafel slope of 74 mV dec^(-1) and onset potential of 141 *** mechanism has been ***,computation confirms that the absence of S atoms prompts surface charge modulation and enhances electronic *** addition,the under-coordinated Sn atoms adjacent to S vacancy introduce the lattice distortion and charge density redistribution,which are beneficial to hydrogen binding in *** short,accurate knockout of specific atoms by controlling the annealing temperature is a promising strategy to explore structure-dependent properties of various 2D materials.

关键词： SnS_(2) annealing S vacancy HAADF-STEM hydrogen evolution reaction

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How to intensify nucleation of ultra-wide metastable zone widths: Case study of 4,4′-Oxydianiline

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Separation and Purification technology 2025年 375卷

作者： Jiaqi Li Xingyu Zhang Xinmei Lv Shijie Xu Yanfei Wang Tianjin Key Laboratory of Brine Chemical Engineering and Ecological Utilization of Resources Tianjin Engineering Center of Marine Chemical Engineering & Technology Tianjin Key Laboratory of Multiplexed Identification for Port Hazardous Chemicals State Key Laboratory of Bio-based Fiber Materials College of Chemical Engineering and Materials Science Tianjin University of Science and Technology Tianjin 300457 China

Crystallization systems exhibiting ultra-wide metastable zone widths (MSZWs) due to pronounced solute–solvent hydrogen bonding interactions are characterized by impeded de-solvation and aggregation of solute molecules, resulting in nucleation inhibition. In our previous experiment, we found that the MSZW of 4,4′-Oxydianiline (ODA) in N, N-Dimethylacetamide (DMAC) can be as high as 40–50 K. Here, we demonstrate three strategies to shorten the MSZW of ODA in DMAC: elevating saturation temperature, ultrasound-assisted nucleation, and anti-solvent (H 2 O)-regulated cooling crystallization. As expected, elevating saturation temperature can shorten the MSZW and there is a very large shortening under ultrasound-assisted, with a shortening of up to 90 %. More interestingly, anti-solvent (H 2 O)-regulated achieved a remarkable 95 % reduction of MSZW despite lowering solubility. Molecular dynamics simulations revealed that H 2 O introduction promotes solute aggregation by weakening the strong interactions between ODA and DMAC. Furthermore, building upon the validated universality of the Xu-S model, we achieved precise prediction of MSZWs by correlating key nucleation parameters ( γ , A , D , η ) with the nucleation temperature ( T 1 ). To the best of our knowledge, this is the first study to regulate ultra-wide MSZWs via anti-solvent regulated strategy in cooling crystallization. This work will provide new insights into how to enhance nucleation and achieve efficient separation in the ultra-wide MSZWs.

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Grifola Frondosa Polysaccharides affects gut microbiota and lipid profiles depended on the molecular weight in mice

Grifola Frondosa Polysaccharides affects gut microbiota and ...

引用

Information technology and biomedical Engineering (ICITBE), International Conference on

作者： Xiuyu Ji Xinli Liu Deqiang Zhu Zhenshang Xu Yaqi Chu Song Zhang Shandong Provincial Key Laboratory of Microbial Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan PR China State Key Laboratory of Bio-based Material and Green Papermaking Shandong Provincial Key Lab. of Microbial Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan P.R. China

ISBN: (纸本)9781665401005

Figuring out the effect of Grifola frondosa Polysaccharide (GFP) on gut microbiota is increasingly recognized because of its widespread use in medicine area. In the present study, we investigated the potential influences of GFP with five molecular weight ranges on the gut microbiota, lipid content in serum and livers, and metabolic pathways in mice. GFP with each molecular weight range significantly changed the composition of the gut microbiota. Compared with the control (CK) group, GFP with five molecular weight ranges significantly changed Beta-diversity of the gut microbiota, especially EG3 (30-50k Dalton) group and the EG5 (⩾100k Dalton) group. GFP with five molecular weight ranges had no significant effect on the lipid profiles of the content of triglycerides (TG), total cholesterol (T-CHO), high density lipoprotein (HDL-C) and low density lipoprotein (LDL-C) in serum. The EG4 (50-100k Dalton) group obviously reduced the content of TG and T-CHO, slightly increased the content of HDL-C, and slightly changed the content of LDL-C in liver. The EG1 (⩽10k Dalton) group, the EG2 (10-30k Dalton) group, the EG3 group and the EG5 group made the KEGG pathways changed. These findings illustrated that GFP positively affected the microbial environment in the gut microbiota and offered the experimental evidence for preparation of multi-functional diet or medicine.

关键词： Liver Lipidomics Mice Information technology biomedical engineering

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