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Low-cost and low-density carbonized facial tissue supported uniform NiCo_(2)S_(4)nanotubes for high capacity flexible solid-state supercapacitors

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Journal of Materiomics 2021年第1期7卷 166-176页

作者： Haiwei Wu Jingxuan Bi Yiyi Li Li Wang Xiaofei Pang Chuanyin Xiong Zhijian Li Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development College of Bioresources Chemical and Materials EngineeringShaanxi University of Science&TechnologyXi'an710021China national demonstration center for experimental Light Chemistry engineering education Shaanxi University of Science&TechnologyXi'an710021China

Recently,rapid development of intelligent wearable electronic equipment has triggered great needs for flexible and lightweight portable energy storage ***,we demonstrate a low-cost($0.5 m^(-2))and low density carbonized facial tissue paper(FCP)for high-conductive NiCo_(2)S_(4)nanotubes assisted novel ultra-flexible solid-state supercapacitors(SSCs).The hydrothermal synthesized FCP-900@NiCo_(2)S_(4)electrodes in this paper only have a density of 5 mg cm^(-2)and show large specific capacitance of 3115 mF cm^(-2)at 2 mA cm^(-2).Based on the high performance of FCP-900@NiCo_(2)S_(4)electrodes,the as assembled SSCs can deliver an energy density of 1.2 mWh cm^(-3),high power density of 58.16 mW *** also shows great bending-state capacitive performance with high capacitance retention after 5000 cycles,providing a new opportunity for developing high-performance flexible wearable energy storage devices.

关键词： NiCo_(2)S_(4) Facial tissue Carbon paper Flexible Solid-state supercapacitors

Close-loop recyclable and flexible halide perovskite@wool keratin sensor with piezoelectric property

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Journal of Energy Chemistry 2023年第9期84卷 428-435页

作者： Yingying Zhou Dangge Gao Bin Lyu Chi Zheng Litao Tang Shihao Guo Jianzhong Ma College of Bioresources chemical and Materials engineering Shaanxi University of Science and TechnologyXi'an 710021ShaanxiChina Xi'an Polytechnic University Xi'an 710048ShaanxiChina national demonstration center for experimental Light Chemistry engineering education(Shaanxi University of Science&Technology) Xi'an 710021ShaanxiChina Xi'an Key Laboratory of Green chemicals and Functional Materials Xi'an 710021ShaanxiChina

Halide perovskites with excellent piezoelectric properties,but their poor stability hinders their largescale ***,a sandwich-structured halide perovskite flexible sensor with good stability was developed according to a three-step procedure as follows:(ⅰ) in-situ growth of wool keratinCsPbBr_(3)(WK-CsPbBr_(3)) using wool keratin in interfacial passivation and coating,(ⅱ) electrospinning of a wool keratin-CsPbBr_(3)/polyacrylonitrile(WCP) nanofiber film,and(ⅲ) coating of the WCP nanofiber with polydimethylsiloxane(PDMS) to obtain a sensor(WCPP).The sensor could generate a piezoelectric voltage of 7.8 V at a pressure of 6 kPa in the stages of pressing and releasing,and the output characteristics did not decline even after 10,000 *** to the 4-month stability of the perovskite sensor,WCPP sensor exhibited the output performance even after 16 months,which indicated that wool keratin as a multidentate improved the stability of the halide ***,the sensor displayed a self-cleaning property and could also light up 14 commercial *** close-loop recycling of the lead halide perovskite was achieved by dissolving the WCP nanofiber film in DMF and then ***,the method proposed is a step forward for achieving the commercialization of WK-CsPbBr_(3) and providing new avenues for further utilization of wool waste.

关键词： Piezoelectric Halide perovskite Wool keratin Sensor Human monitoring

Hierarchical engineering of CoNi@Air@C/SiO_(2)@Polypyrrole multicomponent nanocubes to improve the dielectric loss capability and magnetic-dielectric synergy

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Journal of Materials Science & Technology 2023年第16期147卷 37-46页

作者： Qiqin Liang Lei Wang Xiaosi Qi Qiong Peng Xiu Gong Yanli Chen Ren Xie Wei Zhong College of Physics Guizhou Province Key Laboratory for Photoelectrics Technology and ApplicationGuizhou UniversityGuiyang 550025China national demonstration center for experimental Materials Science and engineering education Jiangsu University of Science and Technology Zhenjiang 212003China national Laboratory of Solid State Microstructures and Jiangsu Provincial Laboratory for NanoTechnology Nanjing UniversityNanjing 210093China

Impedance matching characteristics and loss capabilities including magnetic loss,polarization loss and conduction loss are critical factors to improve microwave absorption performances(MAPs).To elevate these aspects,herein,yolk-shell structured CoNi@Air@C/SiO_(2)@Polypyrrole(PPy)magnetic multicomponent nanocubes(MCNCs)were designed and successfully fabricated in high efficiency through a continuous co-precipitation route,classical Stöber method,thermal treatment and polymerization *** obtained results indicated that the formation of SiO_(2) effectively stabilized the cubic geometrical morphology and yolk-shell structure during the high-temperature pyrolysis *** introduction of PPy greatly boosted their polarization loss and conductive loss ***,the as-prepared yolkshell structured CoNi@Air@C/SiO_(2)@PPy MCNCs presented superior MAPs compared to CoNi@Air@C/SiO_(2) ***,by regulating the content of PPy,the obtained CoNi@Air@C/SiO_(2)@PPy MCNCs displayed tunable and excellent comprehensive MAPs in terms of strong absorption capabilities,broad frequency bandwidths and thin matching thicknesses,which could be ascribed to the unique structure and excellent magnetic-dielectric synergistic ***,our findings provided an alternative pathway to effectively utilize the magnetic-dielectric synergy and loss capabilities for the developing yolk-shell structured magnetic MCNCs as the strong wideband microwave absorbers.

关键词： Yolk-shell structure CoNi@Air@C/SiO_(2)@PPy Polarization and conductive loss Magnetic-dielectric synergy Microwave absorption

Microstructure investigation of dynamic recrystallization in hard machining:From thermodynamic irreversibility perspective

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Frontiers of Mechanical engineering 2021年第2期16卷 315-330页

作者： Binxun LI Xinzhi ZHANG Song ZHANG Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of education School of Mechanical EngineeringShandong UniversityJinan 250061China Key national demonstration center for experimental Mechanical engineering education Shandong UniversityJinan 250061China China Unicom(Shandong)Industrial Internet Co. Ltd.Jinan 250001China

The drastically changed thermal,mechanical,and chemical energies within the machined surface layer during hard machining tend to initiate microstructural *** this paper,attention is paid to the introduction of thermodynamic potential to unravel the mechanism of microstructure ***,the thermodynamic potential-based model expressed by the Helmholtz free energy was proposed for predicting the microstructure changes of serrated chip and the machined surface ***,the proposed model was implemented into a validated finite element simulation model for cutting operation as a user-defined *** addition,the predicted irreversible thermodynamic state change in the deformation zones associated with grain size,which was reduced to less than 1 mm from the initial size of 1.5 mm on the machined surface,was provided for an in-depth *** good consistency between the simulated results and experimental data validated the efficacy of the developed *** research helps to provide further insight into the microstructure alteration during metal cutting.

关键词： thermodynamic irreversibility Helmholtz free energy microstructure evolution dynamic recrystallization hard milling

Sum Frequency Spectroscopy Studies on Cell Membrane Fusion Induced by Divalent Cations

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Chinese Journal of chemical Physics 2022年第6期35卷 883-892,I0072页

作者： Xiao-feng Han Wen-hua Sun Shu-jing Wang Xiao-lin Lu State Key Laboratory of Bioelectronics School of Biological Science and Medical EngineeringNational Demonstration Center for ExperimentalBiomedical Engineering EducationSoutheast UniversityNanjing 210096China

Cell membrane fusion is a fundamental biological process involved in a number of cellular living functions. Regarding this, divalent cations can induce fusion of the lipid bilayers through binding and bridging of divalent cations to the charged lipids, thus leading to the cell membrane fusion. However, the elaborate mechanism of cell membrane fusion induced by divalent cations is still needed to be ***, surface/interface sensitive sum frequency generation vibrational spectroscopy(SFG-VS) and dynamic light scattering(DLS) were applied in this research to study the responses of phospholipid monolayer to the exposure of divalent metal ions ***^(2+)and Mg^(2+). According to the particle size distribution results measured by DLS experiments, it was found that Ca^(2+)could induce inter-vesicular fusion while Mg^(2+)could not. An octadecyltrichlorosilane self-assembled monolayer(OTS SAM)-lipid monolayer system was designed to model the cell membrane for the SFG-VS experiment. Ca^(2+)could interact with the lipid POO_(2)^(-)head groups more strongly, resulting in cell membrane fusion more easily, in comparison with Mg^(2+). No specific interaction between the two metal cations and the C=O groups was observed. However, the C=O orientations changed more after Ca^(2+)-PO2-binding than Mg^(2+)mediation on lipid monolayer. Meanwhile, Ca^(2+)could induce dehydration of the lipids(which should be related to the strong Ca^(2+)-PO_(2)^(-)interaction), leading to the reduced hindrance for cell membrane fusion.

关键词： Cell membrane fusion Sum frequency generation vibrational spectroscopy Dynamic light scattering Lipid monolayer

Foam Forming: An Effective Method to Prepare Polyimide Fiber-based Paper

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Paper And Biomaterials 2019年第3期4卷 39-44页

作者： Shunxi Song Xiaoli Zhen Meiyun Zhang Peiyao Wang Jiaojun Tan national demonstration center for experimental Light Chemistry engineering education Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development Key Laboratory of Paper Based Functional Materials of China National Light Industry College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology

Well-dispersed fiber suspension is the precondition of good paper formation. Compared with cellulosic fibers, synthetic fibers are prone to flocculate because of their long length and hydrophobic nature, resulting in poor paper formation. To solve this problem, dispersants and extremely low forming consistency are typically adopted during the traditional wet-forming process, which cause a large amount of water consumption and treatment cost. Therefore, increasing forming consistency without compromising paper formation remains a challenge for papermakers. In this work, foam forming was adopted to disperse polyimide fibers (PI) with high forming consistency. The results showed that the formation index of handsheets increased when the bubble size and distribution became small and narrow. Compared with traditional wet-forming process with the same consistency (0.4%), the formation index of handsheets by foam forming increased by approximately 100% when C8 alkyl glucoside (APG08) concentration reached 16 g/L. Notably, forming consistency could increase by eight times while keeping the same level of paper formation. Overall, foam forming exhibits great advantages in dispersing long fiber and reducing water consumption and environmental pressure, and has potential applications in specialty paper made of long fibers.

关键词： foam forming long PI fibers high forming consistency bubble size formation

Amine-functionalized mesoporous UiO-66 aerogel for CO_(2) adsorption

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Chinese Journal of chemical engineering 2023年第2期54卷 36-43页

作者： Mengge Shang Jing Zhang Jinqiang Sun Shimo Yu Feng Hua Xiaoxu Xuan Xun Sun Serguei Filatov Xibin Yi Shandong Key Laboratory for Special Silicon-containing Material Advanced Materials InstituteQilu University of Technology(Shandong Academy of Sciences)Jinan 250014China Key Laboratory of High Efficiency and Clean Mechanical Manufacture Ministry of EducationNational Demonstration Center for Experimental Mechanical Engineering Education at Shandong UniversitySchool of Mechanical EngineeringShandong UniversityJinan 250061China Laboratory of Hydrogen Energy Institute of Heat and Mass Transfer of the National Academy of Sciences of BelarusMinsk 220072Belarus

A mesoporous UiO-66-NH_(2) aerogel is prepared via a straightforward sol-gel method without using any binders or mechanical pressures, in which the amine groups are directly introduced into the matrix by using 2-aminoterephthalic acid. The novel UiO-66-NH_(2) aerogel also exhibits high specific surface area and mesopore-dominated structure, implying its highly potential use in CO_(2) adsorption. For ulteriorly investigating the effect of amine loading on the CO_(2) adsorption ability, a series of UiO-66-NH_(2) aerogel with different amino content is fabricated by changing the ligand/metal molar ratio. When the molar ratio is 1.45, the CO_(2) adsorption capacity reaches the optimum value of 2.13 mmol·g^(-1) at 25 ℃ and 0.1 MPa, which is 12.2% higher than that of pure UiO-66 aerogel. Additionally, UiO-66-NH_(2)-1.45 aerogel also has noticeable CO_(2) selectivity against N_(2) and CH_(4) as well as good regeneration stability. Such results imply that it has good application prospect in the field of CO_(2) adsorption, and also contains the potential to be applied in catalysis, separation and other fields.

关键词： UiO-66-NH_(2)aerogel Sol–gel method Amine groups Nanostructure Carbon dioxide Adsorption

阳离子和阴离子共掺杂Cr,S-NiFe纳米片阵列促进电催化转化葡萄糖耦合制氢

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Science China Materials 2023年第12期66卷 4650-4662页

作者：魏宁张素风姚雪杨金帆 Valentin Nica 周秋生 national demonstration center for experimental Light Chemistry engineering education Shaanxi Provincal Key Laboratory of Papermaking Technology and Specialty Paper DevelopmentCollege of Bioresources Chemical and Materials EngineeringShaanxi University of Science and TechnologyXi’an 710021China

将制氢与间歇性可再生能源驱动的生物质电催化转化结合起来,是获得氢能和高附加值化学品的有效途径.然而,开发具有明确结构-性能关系的强效多功能电催化剂仍然是一个相当大的挑战.本文巧妙地开发了一种阳离子和阴离子共掺策略,以协同调... 详细信息

将制氢与间歇性可再生能源驱动的生物质电催化转化结合起来,是获得氢能和高附加值化学品的有效途径.然而,开发具有明确结构-性能关系的强效多功能电催化剂仍然是一个相当大的挑战.本文巧妙地开发了一种阳离子和阴离子共掺策略,以协同调控NiFe层状双氢氧化物的电子结构,明显促进了催化活性位点的暴露,从而提高了葡萄糖电催化转化制氢的性能.实验结果表明,杂原子Cr和S的加入促进了Ni(OH)_(2)(Ni^(2+))/NiOOH(Ni^(3+))的可逆氧化还原,显著提高了葡萄糖的电荷转移和吸附能力.在葡萄糖电催化转化反应中,达到10 mA cm^(−2)的电压仅为1.219 V,比析氧反应低0.226 V.此外,Cr,S-NiFe/NF在双电极电解槽中表现出显著的葡萄糖电催化转化性能和产氢性能,达到10 mA cm^(−2)电流密度的电势仅为1.337 V,同时在阳极产生增值的甲酸盐,产氢率较电解水制氢提高了9倍.该生物质转化制氢耦合电催化剂提高了制氢效率,并获得了高附加值化学品.

关键词： overall water splitting electrocatalytic glucose conversion reaction synergistic modulation upcycling of biomass

A novel AH-D-A-type phase junction material to improve photovoltaic performance and device stability in fullerene OSCs

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Chinese chemical Letters 2020年第9期31卷 2452-2458页

作者： Lin Shao Fei Tong Mengbing Zhu Hao Xia Wenhong Peng Hua Tan Bin Zhang Yu Liu Weiguo Zhu College of Chemistry Xiangtan UniversityXiangtan 411105China School of Materials Science and engineering Jiangsu Collaborative Innovation Center of Photovoltaic Science and EngineeringJiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and ApplicationsNational Experimental Demonstration Center for Materials Science and EngineeringChangzhou UniversityChangzhou 213164China

In order to boost power conversion efficiency(PCE) and operation stability of organic solar cells(OSCs),we propose a new idea of phase junction materials(PJMs) used as a photoactive layer component to improve device performance and *** this purpose,a novel PJM of H-TRC8 based on rhodanine unit was designed with a conjugated AH-D-A ***,AH is a hydrogen-donating electron acceptor unit,D-A is an electron donor-acceptor *** is found that H-TRC8 has a good carriertransporting ability,as well as definite hydrogen-bond and D-A interaction with donor/acceptor *** H-TRC8 is added into the PBDB-T/PC60BM blend film with 1.0 vol% DIO(1,8-diiodooctane),the resulting blend film exhibited an enhanced absorption and improved *** intermolecular hydrogen bond between H-TRC8 and PBDB-T plays an important role for them,which is confirmed via FT-IR spectra and 2D 1H *** a result,the PBDB-T/PC60BM-based devices with 1.25 wt%H-TRC8 and 1.0 vol% DIO exhibit a significantly improved PCE of 8.06%,which is increased by 20.6% in comparison to that in the binary devices with 1.0 vol% DIO only(PCE=6.68%).Furthermore,the device stability is significantly enhanced with only 43% PCE roll-off at 150℃ for 120 *** work indicates that AH-D-A-type PJMs are promising photovoltaic materials used as photoactive-layer components to achieve high-performance fullerene OSCs with high device stability.

关键词： Phase junction material A_H-D-A H-bond H-TRC8 Performance and stability