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A "Concentrated lonogel-in-Ceramic" Silanization Composite Electrolyte with Superior Bulk Conductivity and Low Interfacial Resistance for Quasi-Solid-State Li Metal Batteries

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Energy & Environmental Materials 2024年第05期 24-32页

作者： Wangshu Hou Zongyuan Chen Shengxian Wang Fengkun Wei Yanfang Zhai Ning Hu Shufeng Song College of Aerospace Engineering Chongqing University chongqing Changan New Energy Vehicle Co. Ltd. State Key Laboratory of Reliability and Intelligence Electrical Equipment National Engineering Research Center for Technological Innovation Method and Tool and School of Mechanical Engineering Hebei University of Technology

he ideal composite electrolyte for the pursued safe and highenergy-density lithium metal batteries （LMBs） is expected to demonstrate peculiarity of superior bulk conductivity, low interfacial resistances, and good compatibility against both Li-metal anode and high-voltage *** is no composite electrolyte to synchronously meet all these requirements yet, and the battery performance is inhibited by the absence of effective electrolyte design. Here we report a unique"concentrated ionogel-in-ceramic"silanization composite electrolyte （SCE） and validate an electrolyte design strategy based on the coupling of high-content silane-conditioning garnet and concentrated ionogel that builds well-percolated Li+transport pathways and tackles the interface issues to respond all the aforementioned requirements. It is revealed that the silane conditioning enables the uniform dispersion of garnet nanoparticles at high content （70 wt%） and forms mixed-lithiophobic-conductive LiF-Li3N solid electrolyte interphase. Notably, the yielding SCE delivers an ultrahigh ionic conductivity of 1.76×10-3S cm-1at 25℃, an extremely low Limetal/electrolyte interfacial area-specific resistance of 13Ωcm2, and a distinctly excellent long-term 1200 cycling without any capacity decay in4.3 V Li‖LiNi0.5Co0.2Mn0.3O2（NCM523） quasi-solid-state LMB. This composite electrolyte design strategy can be extended to other quasi-/solid-state LMBs.

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Quasi-two-dimensional strong liquid-like dynamics of surface atoms in metallic glasses

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science China(Physics,Mechanics & Astronomy) 2024年第3期67卷 102-109页

作者： Bing Wang Xuanqiao Gao Rui Su Pengfei Guan School of Physical science and Technology Northwestern Polytechnical UniversityXi'an 710072China Innovation Center NPU chongqing Northwestern Polytechnical UniversityChongqing 401135China School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi'an 710072China Northwest Institute for Nonferrous Metal Research Xi'an 710016China Institute of Advanced Magnetic Materials College of Materials and Environmental EngineeringHangzhou Dianzi University Hangzhou 310018China Beijing Computational science Research Center Beijing 100093China

The fast dynamic properties of the surface of metallic glasses(MGs) play a critical role in determining their potential applications. However, due to the significant difference in thermal history between atomic simulation models and laboratory-made samples, the atomic-scale behaviors of the fast surface dynamics of MGs in experiments remain uncertain. Herein, we prepared model MG films with notable variations in thermal stability using a recently developed efficient annealing protocol, and investigated their atomic-scale dynamics systematically. We found that the dynamics of surface atoms remain invariant, whereas the difference in dynamical heterogeneity between surface and interior regions increases with the improvement of thermal stability. This can be associated with the more pronounced correlation between atomic activation energy spectra and depth from the surface in samples with higher thermal stability. In addition, dynamic anisotropy appears for surface atoms, and their transverse dynamics are faster than normal components, which can also be interpreted by activation energy spectra. Our results reveal the presence of strong liquid-like atomic dynamics confined to the surface of laboratory-made MGs, illuminating the underlying mechanisms for surface engineering design, such as cold joining by ultrasonic vibrations and superlattice growth.

关键词： metallic glasses thermal stability invariant surface dynamics potential energy landscape dynamic anisotropy and heterogeneity

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A highly linear stretchable MXene-based biocompatible hydrogel-elastomer hybrid with tissue-level softness

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science China Materials 2024年第10期67卷 3368-3378页

作者： Shu Wan Haizhou Huang Zisheng He Yizhou Ye Shen Li Shi Su Jiaxin Shen Longxiang Han Peng Wan Xu Ran Li Chen Xuefeng He Litao Sun Hengchang Bi Key Laboratory of Optoelectronic Technology and Systems Ministry of EducationKey Disciplines Laboratory of Novel Micro-Nano Devices and System TechnologySchool of Optoelectronics EngineeringChongqing UniversityChongqing 400044China College of Photonic and Electronic Engineering Fujian Normal UniversityFuzhou 350117China School of Aeronautical Engineering Nanjing Vocational University of Industry TechnologyNanjing 210023China SEU-FEI Nano-Pico Center Key Laboratory of MEMS of Ministry of EducationCollaborative Innovation Center for Micro/Nano FabricationDevice and SystemSoutheast UniversityNanjing 210096China The Shanghai Key Laboratory of Multidimensional Information Processing School of Communication and Electronic EngineeringEast China Normal UniversityShanghai 200241China

Maintaining low modulus while endowing the wide-range linear stretchability to wearable or implantable devices is crucial for these devices to reduce the mechanical mismatch between the devices and human skin/tissue ***,improving linear stretchability often results in an increased modulus of stretchable electronic materials,which hinders their conformability in long-term quantifiable monitoring of ***,we develop a hybrid structure involving interlocking low-modulus porous elastomers(Ecoflex-0030)and MXene-based hydrogels with crosslinking networks of polyvinyl alcohol,sodium alginate,and *** hydrogel–elastomer structure exhibits superior performance compared with previous reports,with a wide linear stretchability strain range from 0 to 1000%and maintaining a low modulus of 6.4 ***,the hydrogel–elastomer hybrids can be utilized as highly sensitive strain sensors with remarkable characteristics,including high sensitivity(gauge factor~3.52),a linear correlation between the resistance and strain(0–200%),rapid response(0.18 s)and recovery times(0.21 s),and excellent electrical reproducibility(1000 loading–unloading cycles).Those electrical and mechanical properties allow the sensor to act as a suitable quantifiable equipment in organ monitoring,human activities detecting,and human–machine interactions.

关键词： linear stretchability low modulus MXene hydrogel-elastomer hybrid

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Using pipette tips to readily generate spheroids comprising single or multiple cell types

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Journal of Zhejiang University-science A(Applied Physics & Engineering) 2023年第10期24卷 875-885页

作者： Rong PAN Xiaoyan YANG Shiming WU Yuanyuan XIE Feng CHEN Ke NING Wei SUN Ling YU Key Laboratory of Luminescence Analysis and Molecular Sensing Ministry of EducationInstitute for Clean Energy and Advanced MaterialsSchool of Materials and EnergySouthwest UniversityChongqing 400715China College of Chemistry and Chemical Engineering Hainan Normal UniversityHaikou 571158China

Three-dimensional(3D)cell culture methods have been validated that can replicate the tumor environment in vivo to a large extent,providing an effective tool for studying *** this study,we demonstrated the use of standard laboratory pipette tips as micro vessels for generating 3D cell *** microfabrication or wet-chemistry surface modifications were involved in the *** consisting of single or multiple cell types were generated within 24 h just by pipetting and incubating a cell suspension in pipette *** electron microscope and optical microscope proved that the cells grew together tightly,and suggested that while gravity force might have initiated the sedimentation of cells at the bottom of the tip,the active aggregation of cells to form tight cell-cell interactions drove the formation of *** common laboratory micropipettes and pipette tips,the rate of spheroid generation and the generation reproducibility was characterized from five boxes each with 80 *** ease of transferring reagents allowed modeling of the growth of microvascular endothelial cells in tumor ***,the pairing and fusion of tumor spheroids could be manipulated in the pipette tips,suggesting the potential for building and assembling heterogeneous micro-tumor tissues in vitro to mimic solid tumors in *** study demonstrated that spheroids can be readily and cost-effectively generated in standard biological laboratories in a timely manner using pipette tips.

关键词： Pipette tip 3D cell culture Tumor spheroids Co-culture In-situ observation

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Fiber cladding SPR bending sensor characterized by two parameters

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Chinese Physics B 2020年第12期29卷 205-211页

作者： Chunlan Liu Jiangxi Hu Yong Wei Yudong Su Ping Wu Lingling Li Xiaoling Zhao College of Electronic&Information Engineering Chongqing Three Gorges UniversityChongqing 404100China College of Electronic Engineering Heilongjiang UniversityHarbin 150080China

A fiber cladding surface plasmon resonance(SPR)bending sensor is realized by the cladding of the fiber *** employing coating film,the sensing zone is protected and the toughness of the sensor *** different sensing probes are tested,the experiment results indicate that the two parameters(wavelength sensitivity and light intensity sensitivity)sensing performances of the eccentric butt joint structures are superior to that of hetero-core structure,and the SPR bending sensor based on hetero-core structure is stable and uneasy to *** employing hetero-core fiber and silver film,a fiber cladding SPR bending sensor with better stabilization and sensing performance is *** proposed fabricating method of sensing probe with coating film provides a new approach for fiber SPR-distributed bending sensor.

关键词： surface plasmon resonance(SPR) bending sensor eccentric butt joint hetero-core fiber

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Ground-state vortex structures of a rotating binary dipolar Bose–Einstein condensate confined in harmonic plus quartic potential

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Chinese Physics B 2019年第1期28卷 251-256页

作者： Guang-Ping Chen Chang-Bing Qiao Hui Guo Lin-Xue Wang Ya-Jun Wang Ren-Bing Tan School of Intelligent Manufacturing Sichuan Art and Science UniversityDazhou 635000China School of Chemistry and Chemical Engineering Sichuan Art and Science UniversityDazhou 635000China Key Laboratory of Time and Frequency Primary Standards National Time Service CenterChinese Academy of SciencesXi’an 710600China School of Astronomy and Space science University of Chinese Academy of SciencesBeijing 100049China College of Mathematics and Physics Chongqing University of Science and TechnologyChongqing 401331China

We consider a binary dipolar Bose–Einstein condensate confined in a rotating harmonic plus quartic potential *** ground-state vortex structures are numerically obtained as a function of the contact interactions and the dipole–dipole interaction in both slow and rapid rotation cases. The results show that the vortex configurations depend strongly on the strength of the contact interactions, the relative strength between dipolar and contact interactions, as well as on the orientation of the dipoles. A variety of exotic ground-state vortex structures, such as pentagonal and hexagon vortex lattice,square vortex lattice with a central vortex, annular vortex lines, and straight vortex lines, are observed by turning such controllable parameters. Our results deepen the understanding of effects of dipole–dipole interaction on the topological defects.

关键词： Bose–Einstein condensate dipolar–dipolar interaction harmonic plus quartic potential trap vortex structure

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Journal of Hepatology|代谢生物标志物显著增强了对HBV相关慢加急性肝衰竭发生和结果的预测

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临床肝胆病杂志 2024年第2期40卷 257-257页

作者：冯悦高沿航吉林大学第一医院感染病与病原生物学中心肝胆胰内科

慢加急性肝衰竭(ACLF)是一种与慢性肝病患者高短期病死率相关的临床综合征。慢性乙型肝炎是中国和亚洲其他国家ACLF(HBV-ACLF)的主要病因。为了提高ACLF患者的疾病管理和生存率,来自上海交通大学的张艳等进行了一项多中心前瞻性研究,旨... 详细信息

慢加急性肝衰竭(ACLF)是一种与慢性肝病患者高短期病死率相关的临床综合征。慢性乙型肝炎是中国和亚洲其他国家ACLF(HBV-ACLF)的主要病因。为了提高ACLF患者的疾病管理和生存率,来自上海交通大学的张艳等进行了一项多中心前瞻性研究,旨在发现新的生物标志物,以增强对HBV-ACLF的诊断和预测。该研究对1 024份血浆样本进行了代谢组学分析,这些样本来自入院时出现急性加重的HBV相关慢性肝病患者(367份ACLF和657份非ACLF)。将样本随机分为相等的两份,作为发现集和验证集。

关键词：慢性肝病患者临床综合征上海交通大学生物标志物血浆样本慢性乙型肝炎急性加重主要病因

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Recent progress in advanced core-shell metal-based catalysts for electrochemical carbon dioxide reduction

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Chinese Chemical Letters 2022年第5期33卷 2259-2269页

作者： Fengqi Wang Wenlong Zhang Hongbin Wan Chenxi Li Wankai An Xia Sheng Xiaoyu Liang Xiaopeng Wang Yunlai Ren Xin Zheng Dongcan Lv Yuchen Qin College of sciences Henan Agricultural UniversityZhengzhou 450000China Oilfield Technology Research Institute of Fengcheng Oilfield Operation Area Xinjiang Oilfield CompanyKaramay 834000China College of Life science Chongqing Normal UniversityChongqing 401331China

Electrochemical carbon dioxide reduction(CO_(2)RR)plays an important role in solving the problem of high concentration of CO_(2)in the atmosphere and realizing carbon ***-shell structure has many unique features including tandem catalysis,lattice strain effect,defect engineering,which exhibit great potential in *** this review,we focus on the advanced core-shell metal-based catalysts(CMCs)for electrochemical CO_(2)*** recent progress of CMCs in electrocatalytic CO_(2)RR is described as the follow-ing aspects:(1)The mechanism of electrochemical CO_(2)RR and evaluation parameters of electrocatalyst performance,(2)preparation methods of core-shell metal catalysts and core-shell structural advantages and(3)advanced CMCs towards electrochemical CO_(2)***,we make a brief conclusion and propose the opportunities and challenges in the field of electrochemical CO_(2)RR.

关键词： CMCs Electrochemical CO_(2)RR Tandem catalysis Lattice strain effect Defect engineering

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Retrieval of Aerosol Optical Depth for chongqing Using the HJ-1 Satellite Data

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Journal of Meteorological Research 2017年第3期31卷 586-596页

作者： Zengwu WANG Shiqi YANG Qiaolin ZENG Yongqian WANG College of Environmental and Resource science Chengdu University of Information Technology chongqing Institute of Meteorological sciences

Aerosol optical depth （AOD） is a common indicator applied in monitoring aerosols in the atmosphere. The hilly landscape and rapid economic growth of the megacity chongqing have facilitated increased aerosol concentration, and it is meaningful to accurately retrieve AOD over chongqing. The HJ-1A/B satellite of China carries a sensor/camera called the Charge Coupled Device （CCD）, the spatial resolution of which meets the requirement for re- trieving high resolution AOD. In this paper, analysis of the AOD retrievals from different methods using the H J-1 satellite data revealed the most suitable algorithm. Through comparison with the AOD product of Moderate Resolu- tion Imaging Spectroradiometer （MODIS）, the AOD retrieval results using enhanced vegetation index （EVI） to estim- ate dark pixels showed the highest correlation. The continental aerosol model was used to build a lookup table that was able to facilitate a good AOD retrieval for both city and rural areas. Finally, the algorithm that combined dark pixels, buffer areas, and the deep blue algorithm was found to be most suitable for AOD retrieval. The AOD retrieval results based on the HJ-1 data were consistent with MODIS products, and our algorithm yields reasonable results in most cases. The results were also compared with ground-based PMl0 measurements synchronized with the overpass time of the HJ-1 satellite, and high correlation was found. The findings are relevant to other Chinese satellite data used for retrieving AOD on the same channels.

关键词： aerosol optical depth HJ-1 satellite dark pixels algorithm deep blue algorithm

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Variation of efficiency droop with quantum well thickness in In GaN/GaN green light-emitting diode

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Chinese Physics B 2015年第12期24卷 572-577页

作者：刘炜赵德刚江德生陈平刘宗顺朱建军李翔梁锋刘建平杨辉 State Key Laboratory on Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences School of Electronic and Electrical Engineering Chongqing University of Arts and Sciences Suzhou Institute of Nano-tech and Nano-bionics Chinese Academy of Sciences

In GaN/GaN multiple quantum well（MQW） green light-emitting diodes（LEDs） with varying In GaN quantum well layer thickness are fabricated and characterized. The investigation of luminescence efficiency versus injection current reveals that several physical mechanisms may jointly influence the efficiency droop, resulting in a non-monotonic variation of droop behavior with increasing quantum well（QW） thickness. When the QW is very thin, the increase of In GaN well layer thickness makes the efficiency droop more serious due to the enhancement of polarization effect. When the QW thickness increases further, however, the droop is alleviated significantly, which is mainly ascribed to the enhanced nonradiative recombination process and the weak delocalization effect.

关键词： InGaN/GaN multiple quantum wells light-emitting diode efficiency droop well thickness

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