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Flexible, self-cleaning, and high-performance ceramic nanofiber-based moist-electric generator enabled by interfacial engineering

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Science China(Technological Sciences) 2022年第2期65卷 450-457页

作者： WANG LiMing FENG LanLan SUN Zhao Yang HE XinYang WANG RongWu QIN XiaoHong YU JianYong Key Laboratory of Textile Science&Technology Ministry of EducationCollege of TextilesDonghua UniversityShanghai 201620China Innovation Center for Textile Science and Technology Donghua UniversityShanghai 201620China

Due to their long-term stability, even under extreme conditions, oxide ceramics have attracted significant attention in emerging fields like moist-electric generation. However, the inherent brittleness and low voltage output of oxide ceramic-based moistelectric generators(MEGs) limit their applications in wearable electronics. herein, a facile strategy involving the combination of sol-gel electrospinning and calcination is used to fabricate flexible and freestanding Ti O_(2)/Zr O_(2)(TZ) composite nanofiber-based MEGs. The excellent flexibility of the TZ nanofiber membranes can be attributed to the suppression of their crystal structure transformation, dispersion of stress concentration, and reduction of crack propagation via interfacial engineering. The porous structure of the electrospun nanofiber membrane features an abundance of charged narrow channels for the diffusion of water molecules and generates a streaming potential. The optimal voltage output reached ~0.8 V, which is the highest value reported for an oxide ceramic-based MEG. Furthermore, the as-fabricated nanofiber-based MEG exhibits good self-cleaning capability to degrade organic pollutants under ultraviolet irradiation. By integrating mechanical flexibility, high performance, and a selfcleaning effect, this work presents a new idea for exploring diverse, efficient, and wearable oxide ceramic-based MEGs.

关键词： moist-electric generation ceramic nanofiber electrospinning flexible self-cleaning

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Realizing high-performance all-solid-state batteries with sulfide solid electrolyte and silicon anode:A review

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Nano Research 2023年第3期16卷 3741-3765页

作者： xinyang Wang Kuang he Siyuan Li Jiahui Zhang Yingying Lu State Key Laboratory of Chemical Engineering Institute of Pharmaceutical EngineeringCollege of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China ZJU-Hangzhou Global Scientific and Technological Innovation Center Hangzhou 311215China Zhejiang Yongtai Technology Co. Ltd.Taizhou 317000China

Sulfide solid electrolyte(SE)is one of the most promising technologies for all-solid-state batteries(ASSBs)because of its high ionic conductivity and ductile mechanical properties.In order to further improve the energy density of sulfide-based ASSBs and promote practical applications,silicon anodes with ultrahigh theoretical capacity(4,200 mAh·g^(−1))and rich resource abundance have broad commercial prospects.However,significant challenges including bulk instability of sulfide SEs and poor utilization of silicon materials have severely impeded the ASSBs from becoming viable.In this review,we first introduce the critical bulk properties of sulfide SEs and the most recent improving strategies covering the ionic conductivity,air stability,electrochemical window,mechanical stability,thermostability and solvent stability.Next,we introduce the main factors affecting the compatibility of silicon and sulfide SE,including the carbon’s effect,particle size of silicon,external pressure,silicon composite matrix and the depth of silicon’s lithiation.Finally,we discuss possible research directions in the future.We hope that this review can provide a comprehensive picture of the role of nanoscale approaches in recent advances in ASSBs with sulfide and silicon,as well as a source of inspiration for future research.

关键词： all-solid-state battery sulfide solid electrolyte silicon anode nanoscale optimization

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Preparation and Rheological Properties of Vacuum Lubricating Grease

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China Petroleum Processing & Petrochemical Technology 2021年第1期23卷 120-126页

作者： he Yifeng Sun Hongwei Liu xinyang SINOPEC Research Institute of Petroleum Processing Beijing 100083

A kind of vacuum lubricating grease was prepared by using perfluoropolyether as base oil,perfluorinated polymer as thickener,and self-made additives.The colloidal stability of the grease was greatly improved by introducing a colloidal structure modifier.The rheological properties of the self-made grease(SMG),such as viscosity versus time,thixotropy,etc.,were studied by a rheometer at different temperatures and were compared with those of foreign brand grease(FBG).The results show that the performance of SMG reached the level of similar FBG,and some properties such as mechanical stability,colloidal stability,extreme pressure and antiwear properties were better.It can be used for long life lubrication of moving parts in a vacuum environment.

关键词： vacuum lubricating grease perfluoropolyether rheology thixotropy

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Fhe roles and functional mechanisms of interleukin-17 amily cytokines in mucosal immunity

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Cellular & Molecular Immunology 2016年第4期13卷 418-431页

作者： xinyang Song Xiao he Xiaoxia Li Youcun Qian Shanghai Institute of Rheumatology Shanghai Renji Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200001 China Institute of health-Sciences Shanghai Institutes for Biological Sciences Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine Shanghai 200025 China Department of Immunology Lerner Research Institute Cleveland Clinic Foundation Cleveland OH 44195 USA

The mucosal immune system serves as our front-line defense against pathogens. It also tightly maintains immune tolerance to self-symbiotic bacteria, which are usually called commensals. Sensing both types of microorganisms is modulated by signalling primarily through various pattern-recognition receptors （PRRs） on barrier epithelial cells or immune cells. After sensing, proinflammatory molecules such as cytokines are released by these cells to mediate either defensive or tolerant responses. The interleukin-17 （IL-17） family members belong to a newly characterized cytokine subset that is critical for the maintenance of mucosal homeostasis. In this review, we will summarize recent progress on the diverse functions and signals of this family of cytokines at different mucosal edges.

关键词： IL-17 family cytokines mucosal immunity signal transduction

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Highly stretchable,durable,and breathable thermoelectric fabrics for human body energy harvesting and sensing

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Carbon Energy 2022年第4期4卷 621-632页

作者： xinyang he Jia Shi Yunna Hao Mantang he Jiaxin Cai Xiaohong Qin Liming Wang Jianyong Yu Key Laboratory of Textile Science&Technology Ministry of EducationCollege of TextilesDonghua UniversityShanghaiChina Innovation Center for Textile Science and Technology Donghua UniversityShanghaiChina

Stretchable thermoelectrics have recently attracted widespread attention in the field of self-powered wearable electronics due to their unique capability of harvesting body heat.However,it remains challenging to develop thermoelectric materials with excellent stretchability,durable thermoelectric properties,wearable comfort,and multifunctional sensing properties simultaneously.herein,an advanced preparation strategy combining electrospinning and spraying technology is proposed to prepare carbon nanotube(CNT)/polyvinyl pyrrolidone(PVP)/polyurethane(PU)composite thermoelectric fabrics that have high air permeability and stretchability(~250%)close to those of pure PU nanofiber fabrics.Furthermore,PVP can not only improve the dispersion of CNTs but also act as interfacial binders between the CNT and the elastic PU skeleton.Consequently,both the electrical conductivity and the Seebeck coefficient remain unchanged even after bending 1000 times.In addition,self-powered sensors for the mutual conversion of finger temperature and language and detection of the movement of joints to optimize an athlete's movement state were successfully fabricated.This study paves the way for stretchable thermoelectric fabrics with fascinating applications in smart wearable fields such as power generation,health monitoring,and human–computer interaction.

关键词： air permeability carbon nanotubes durability self-powered sensors stretchable thermoelectrics

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Preparation of cinnamic hydroxamic acid collector and study on flotation characteristics and mechanism of scheelite

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International Journal of Mining Science and Technology 2023年第6期33卷 773-781页

作者： Xiang Yao xinyang Yu Liping Wang Yuhui Zeng Linghan Mao Shanming Liu Honghui Xie Guichun he Zhiqiang Huang Zhilin Liu Jiangxi Provincial Key Laboratory of Mining Engineering Ganzhou 341000China School of Resource and Environment Engineering Jiangxi University of Science and TechnologyGanzhou 341000China Yongping Copper Mine Jiangxi Copper Co.LTD.Shangrao 334000China

In this paper,using methyl cinnamate as raw material,the new cinnamic hydroxamic acid collector(CIHA)was synthesized by the hydroxylamine method.The collector performance of hydroxamic acid was investigated for scheelite and gangue calcite,and the flotation separation test of scheelite and calcite was carried out with CIHA as the collector.The interaction mechanism between hydroxamic acid and scheelite minerals has also been investigated through zeta potential,Fourier transform infrared spectroscopy(FTIR)experiments,X-ray photoelectron spectroscopy(XPS)experiments,and density functional theory(DFT)calculation.The single mineral flotation test and artificially mixed ore showed that CIHA had an excellent collection effect and selectivity.Zeta potential,FTIR,and XPS showed that CIHA was adsorbed on the scheelite surface by strong chemical adsorption.The active group of CIHA was analyzed through quantum chemical calculation.It was speculated that C=O and N-O bonds could synthesize a five-membered chelated hydroxamic acid group with Ca element chelate on scheelite surface,changing hydrophobicity and making it more likely to emerge from the pulp.

关键词： Hydroxamic acid CIHA Flotation Scheelite

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Dynamic and adaptive membrane lipid remodeling in leaves of sorghum under salt stress

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The Crop Journal 2022年第6期10卷 1557-1569页

作者： Shengnan Ge Debin Liu Min Chu Xinyu Liu Yulei Wei xinyang Che Lei Zhu Lin he Jingyu Xu Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement of heilongjiang Province/Key Laboratory of Low Carbon Green Agriculture in Northeast Plain Ministry of Agriculture and Rural AffairsChina/Research Center of Saline and Alkali Land Improvement Engineering Technology in Heilongjiang Province/College of AgricultureHeilongjiang Bayi Agricultural UniversityDaqing 163319HeilongjiangChina National Coarse Cereal Engineering Research Center Daqing 163319HeilongjiangChina

Salt stress limits plant growth and development.In this study,changes in membrane lipids were investigated in leaves of sorghum seedlings subjected to salt stress(150 mmol L^(-1)NaCl).Galactolipids(DGDG and MGDG)accounted for more than 65%of the total glycerolipids in sorghum leaves.The predominance of C36 molecular species in MGDG suggested that sorghum is an 18:3 plant.Under Na Cl treatment,the content of major phospholipids(PC and PE)increased,accompanied by the activation of their metabolism pathways at the transcriptional level.In contrast,the proportion of MGDG and PG dropped drastically,leading to a decreased ratio of plastidic to non-plastidic lipids.An adjustment of glycerolipid pathway between the cytosolic and plastidic compartments was triggered by salt stress,as reflected by the increased conversion of PC to PA,providing precursors for galactolipid synthesis.The elevated DGDG resulted in increased DGDG/MGDG and bilayer/non-bilayer lipid ratios.The double-bond index of PC,PE,and DGDG increased markedly,evidently owing to the increased expression of FAD3 and FAD8.These findings will be helpful for understanding dynamic membrane lipid changes and adaptive lipid remodeling in sorghum response to salt stress.

关键词： Sorghum(Sorghum bicolor L.Moench) Membrane lipid remodeling Lipidome Transcriptome Salt stress

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A waterproof,environment-friendly,multifunctional,and stretchable thermoelectric fabric for continuous self-powered personal health signal collection at high humidity

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SusMat 2023年第5期3卷 709-720页

作者： xinyang he Bingyi Li Jiaxin Cai Honghua Zhang Chengzu Li Xinxin Li Jianyong Yu Liming Wang Xiaohong Qin Key Laboratory of Textile Science&Technology Ministry of EducationCollege of TextilesDonghua UniversityShanghaiChina Center for Civil Aviation Composites College of TextilesDonghua UniversityShanghaiChina Innovation Center for Textile Science and Technology Donghua UniversityShanghaiChina

Thermoelectric sensors have attracted increasing attention in smart wearables due to the recognition of multiple signals in self-powered mode.However,present thermoelectric devices show disadvantages of low durability,weak wearability,and complex preparation processes and are susceptible to moisture in the microenvironment of the human body,which hinders their further application in wearable electronics.herein,we prepared a new thermoelectric fabric with thermoplastic polyurethane/carbon nanotubes(TPU/CNTs)by combining vacuum filtration and electrospraying techniques.Electrospraying TPU microsphere coating with good biocompatibility and environmental friendliness made the fabric worn directly and exhibits preferred water resistance,mechanical durability,and stability even after being bent 4000 times,stretched 1000 times,and washed 1000 times.Moreover,this fabric showed a Seebeck coefficient of 49μVK−1 and strain range of 250%and could collect signals well and avoided interference from moisture.Based on the biocompatibility and safety of the fabric,it can be fabricated into devices and mounted on the human face and elbow for long-term and continuous collection of data on the body’s motion and breathing simultaneously to provide collaborative support information.This thermoelectric fabric-based sensor will show great potential in advanced smart wearables for health monitoring,motion detection,and human–computer interaction.

关键词： biocompatibility health monitor self-powered sensing thermoelectric fabrics waterproof

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Discussion on the Mechanism of Boric Acid and Phosphoric Acid to Improve the Hardening of Complex Calcium Lubricating Grease

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China Petroleum Processing & Petrochemical Technology 2019年第4期21卷 112-118页

作者： Zheng Hui Sun Hongwei he Yifeng Su Shuo Zhuang Minyang Liu xinyang SINOPEC Research Institute of Petroleum Processing

In order to solve the hardening problem of complex calcium lubricating grease, the water absorption test of several calcium salts was carried out, and it was found that calcium 12-hydroxystearate did not absorb water, and calcium acetate, calcium phosphate and calcium borate had different degrees of water absorption. Calcium acetate has the highest water absorption rate, while calcium phosphate and calcium borate show comparable water absorption rates. Upon using the molecular simulation technology, it is found that in the complex calcium grease system, calcium phosphate and calcium borate tend to combine with water, which inhibits the water absorption of calcium acetate and alleviate the hardening problem.

关键词： lubricating grease complex calcium hardening

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基于密度泛函理论的KDP(100)表面吸附水分子研究

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北京大学学报（自然科学版） 2022年第5期58卷 785-794页

作者：苏鑫杨贺贤土陈军北京大学物理学院应用物理与技术研究中心北京100871 北京应用物理与计算数学研究所北京100088

基于密度泛函理论中的第一性原理计算方式,开展KDP(100)面表面吸附水分子的性质研究。结合Bader电荷、电子密度、差分电子密度和电子局域函数等参数进行电子密度拓扑分析,结果显示水分子在KDP(100)表面的最佳吸附位点为氢钾桥位,吸附能... 详细信息

基于密度泛函理论中的第一性原理计算方式,开展KDP(100)面表面吸附水分子的性质研究。结合Bader电荷、电子密度、差分电子密度和电子局域函数等参数进行电子密度拓扑分析,结果显示水分子在KDP(100)表面的最佳吸附位点为氢钾桥位,吸附能为–0.809eV,表明KDP(100)表面可以自发地吸附水分子;水分子中的氧原子通过吸附,与KDP(100)表面磷酸根基团上的氢原子形成含共价效应的强氢键O—H...O,拟合键能为–18.88 kcal/mol。

关键词： KDP晶体密度泛函理论第一性原理分子动力学电子密度拓扑分析吸附

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