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Three-Dimensional Heterostructured Mnnicop/Feooh Cross-Linked Nano-Flake Supported by Ni Foam as a Bifunctional Electrocatalysts for Overall Water Splitting

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SSRN 2023年

作者： Zhu, Longqi Wang, Runze Liu, Xuehua Yang, Shuhan Liu, Haizhen Xing, Bo Wang, Kuikui Institute of Materials for Energy and Environment Laboratory of New Fiber Materials and Modern Textile Growing Basis for State Key Laboratory College of Materials Science and Engineering Qingdao University Qingdao266071 China MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials Guangxi University Guangxi Nanning530004 China National Engineering Laboratory of Circular Economy Sichuan University of Science and Engineering Sichuan Zigong643000 China Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology Changzhou University Jiangsu Changzhou213164 China

The production of three-dimensional heterogeneous structures is a vital approach for the creation of high-performance bifunctional electrocatalysts. Herein, three-dimensional heterostructure MnNiCoP/FeOOH (MNC-P/FeOOH) supported by Ni foam was prepared by simple electrodeposition and phosphorylation as a bifunctional electrocatalyst. The results showed that the required overpotential for MNC-P/FeOOH catalyst to reach 100 mA cm-2 current density was 124 mV and 251 mV in 1.0 M KOH solution, respectively. Construction of heterojunction not only improves the OER performance of MnNiCoP, but also reduces the potential required to drive the integral water splitting at 100 mA cm-2 current density. The electrocatalytic activity of MNC-P/FeOOH is greatly increased due to a distinctive interface synergy and strong electronic contacts in the MNC-P/FeOOH heterojunction. This design approach of bifunctional transition metal phosphides provides a potential route to achieve total water splitting. © 2023, The Authors. All rights reserved.

关键词： Heterojunctions

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A Janus and Superhydrophilic Design for Stable and Efficient High-Salinity Brine Solar Interfacial Desalination

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SSRN 2022年

作者： Xiao, Xingfang Pan, Luqi Chen, Bei Chen, Tao Wang, Yingao Zhang, Qian Ren, Lipei Xu, Weilin State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China Institute for Frontier Materials Deakin University GeelongVIC3216 Australia

Solar interfacial desalination is a potential pathway for freshwater using solar energy and brine. Many recent advances have been extensively studied to high-efficiency solar steam yield, however, the decrease of evaporation performance resulted from salt accumulation at absorbers inevitably hinder their development, especially in high-salinity brine (>10%). Here, we propose a Janus and superhydrophilic design for efficient and stable solar interfacial desalination in high-salinity brine. The Janus structure of the absorber, which has an upper layer of very light-absorbing (>95%) carbon fiber powder and a bottom layer of insulated aramid fiber powder, allows for efficient thermal management to prevent heat loss and promote efficient water evaporation. Furthermore, the impact of carboxylate cellulose ensures that the absorber with an ultra-high-water content. Therefore, the Janus and superhydrophilic design can realize an evaporation rate as high as 1.25 kg m −2 h −1 with a salinity of 15 wt% brine under 1-sun illumination and achieve salt resistance in outdoor conditions for a long time. Therefore, this technique simply integrates outdated fiber powder with the current solar interfacial evaporators and establishes a new paradigm for very effective and reliable high-salinity brine treatment. © 2022, The Authors. All rights reserved.

关键词： Evaporation

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Optimizing Mechanical Stretchability and Photovoltaic Performance in All-Polymer Solar Cells from a Two‐Donor Polymer Blend

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SSRN 2023年

作者： Li, Mingfei Xian, Kaihu Zhao, Wenchao Sheng, Dan Liu, Chunhui Li, Xin Li, Weiwei Ye, Long Tianjin300350 China Co-Innovation Center of Efficient Processing Utilization of Forest Resources College of Materials Science and Engineering Nanjing Forestry University Nanjing210037 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Beijing100029 China Hubei Longzhong Laboratory Xiangyang441000 China

In recent years, the power conversion efficiency (PCE) of all-polymer organic solar cells (OSCs) has surpassed 18%, reaching a level suitable for commercial applications. To meet the dual requirements of high efficiency and high stretchability for flexible wearable applications, ternary blending strategies have been widely used to improve the stretchability of all-polymer OSCs. However, up to now, achieving synergistic optimization of both photovoltaic and mechanical properties has not been ideal. Here, we introduce a long-branched alkyl chain-containing PM6-like donor polymer, PM6-OD, into a PM6:PY-IT blend to address this issue. When the content of PM6-OD in the donor polymers is 20%, both the photovoltaic and mechanical properties of the ternary solar cell are improved. The variation of the mechanical and photovoltaic properties with the PM6-OD content in the donor was analyzed through grazing-incidence X-ray scattering and mechanical measurements to gain a deeper understanding of the intrinsic relationship between film structure and mechanical properties. In addition, the data points of elastic moduli match well with the Kerner-Davis model. This work provides new guidance for the construction of high-efficiency, stretchable OSCs and has a promoting effect on the application of organic photovoltaic cells in the field of wearable/stretchable electronic devices. © 2023, The Authors. All rights reserved.

关键词： Organic solar cells

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Electrodeposition of Polyaniline on Reduced Graphene Oxide/Cotton Yarn with Tunable Electrochemical Performance for Flexible textile Supercapacitors

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SSRN 2024年

作者： Li, Lin Du, Dou He, Chengen Han, Kun Xu, Weilin Xia, Liangjun Cai, Guangming Cui, Xun Chen, Yihuang Yu, Lianqing Kong, Lingxue State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China Institute for Frontier Materials Deakin University GeelongVIC3216 Australia École Polytechnique Fédérale de Lausanne LausanneCH-1015 Switzerland College of Chemistry and Materials Engineering Wenzhou University Zhejiang Wenzhou325035 China

Graphene/cotton fibers show significant promise in wearable energy storage due to their low cost, porous structure, and exceptional integration ability into wearable systems. However, the eco-unfriendly reductants and standalone electric double-layer capacitor hindered their application. Herein, a green and rapid hydrothermal-electrodeposition method was proposed to fabricate polyaniline (PANI) decorated reduced graphene oxide (rGO)/cotton yarns without using any chemical reductants and oxidants. The PANI/rGO/cotton (PRC) yarn exhibited porous conductive network, mechanical flexibility, and structural controllability. Additionally, the PRC yarn electrode delivers a fast electron transport and ion migration, synergistic energy storage contribution, and a controllable capacitance (up to 81.2 mF cm−1 at 0.2 mA cm−1). The assembled yarn supercapacitor shows a good capacitance (19.8 mF cm−1 at 0.08 mA cm−1), excellent energy-power density (2.7 μWh cm−1 at 40 μW cm−1), and great capacitance retention. This green fabrication of PRC yarns brings new insights into the development of wearable energy storage. © 2024, The Authors. All rights reserved.

关键词： Graphene

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Interfacial Preparation of Magneto-Plasmonic Fe3o4@Au Core@Shell Nanoechinus as Efficient Photothermal Agents for Anti-Bacterial Application

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SSRN 2022年

作者： Lv, Xuelian Fang, Zheng Sun, Yimin Yang, Yongsheng Wang, Xing Chen, Yazhou Qin, Yanmin Li, Na Li, Chen Xu, Jie Bao, Haifeng School of Materials Science and Engineering State Key Laboratory of New Textile Materials & Advanced Processing Technology Wuhan Textile University Wuhan430200 China Hubei Key Laboratory of Plasma Chemistry and Advanced Materials School of Materials Science and Engineering Wuhan Institute of Technology Wuhan430205 China College of Chemistry and Chemical Engineering Wuhan Textile University Wuhan430200 China

We report the facile synthesis of Fe 3 O 4 @Au core/shell nanoechinus through a template-free liquid-liquid interfacial growth reaction. The prepared magneto-plasmonic Fe 3 O 4 @Au core/shell nanoechinus exhibited outstanding SPR absorption in the NIR region, which imparts the nanoechinus with a superior photothermal conversion efficiency of 69.9%, making this material an efficient photothermal agent for antibacterial application. Our results indicated that the magneto-plasmonic Fe 3 O 4 @Au core/shell nanoechinus could effectively kill both Gram negative E. coli and Gram positive S. aureus under 980 nm laser irradiation and kept good photo-stability after multiple photothermal bacteria killing. We envision that the development of advanced strategy for high efficient antibacterial hybrid nanoparticles could have broad applications in therapy and medical devices. © 2022, The Authors. All rights reserved.

关键词： Plasmonics

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Synergistic band convergence and defect engineering boost thermoelectric performance of SnTe

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Journal of materials Science & technology 2021年第27期86卷 204-209页

作者： Ximeng Dong Wenlin Cui Wei-Di Liu Shuqi Zheng Lei Gao Luo Yue Yue Wu Boyi Wang Zipei Zhang Liqiang Chen Zhi-Gang Chen State Key Laboratory of Heavy Oil Processing College of New Energy and MaterialsChina University of PetroleumBeijing 120049PR China State Key Laboratory of Heavy Oil Processing College of ScienceChina University of PetroleumBeijing 102249PR China Centre for Future Materials University of Southern QueenslandSpringfield CentralQueensland 4300Australia School of Mechanical and Mining Engineering The University of QueenslandBrisbaneQueensland 4072Australia State Key Laboratory of Advanced Power Transmission Technology Global Energy Interconnection Research Institute Co.Ltd.Changping DistrictBeijing 102211PR China Beijing Key Laboratory of Failure Corrosion and Protection of Oil/gas Facilities and Department of Materials Science and EngineeringCollege of New Energy and MaterialsChina University of PetroleumBeijing 102249PR China

As an eco-friendly thermoelectric material,Sn Te has attracted extensive *** this study,we use a stepwise strategy to enhance the thermoelectric performance of Sn ***,Ag Cl is doped into Sn Te to realize band convergence and enlarge the band gap of Ag Cl-doped Sn *** Cl-doping also induces dense point defects,strengthens the phonon scattering,and reduces the lattice thermal ***,Sb is alloyed into Ag Cl-doped Sn Te to further optimize the carrier concentration and simultaneously reduce the lattice thermal conductivity,leading to improved thermoelectric dimensionless figure of merit,***,(Sn_(0.81)Sb_(0.19)Te)_(0.93)(Ag Cl)_(0.07)has approached the ZT value as high as~0.87 at 773 K,which is 272%higher than that of pristine Sn *** study indicates that stepwise Ag Cl-doping and Sb-alloying can significantly improve thermoelectric performance of Sn Te due to synergistic band engineering,carrier concentration optimization and defect engineering.

关键词： Thermoelectric SnTe Stepwise optimize Band structure Lattice thermal conductivity

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Imine Based Covalent Adaptable Networks from Diacetone Acrylamide Polymerization

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SSRN 2024年

作者： Chen, Hanghang Hou, Zihao Li, Liqiong Deng, Haoyu Ouyang, Yixue Ye, Dezhan Jiang, Xiancai State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University No.1 Yangguang Avenue Jiangxia District Hubei Wuhan430200 China School of Materials Science and Engineering Wuhan Textile University No.1 Yangguang Avenue Jiangxia District Hubei Wuhan430200 China School of Chemical Engineering Fuzhou University Fuzhou350108 China

The construction of covalent adaptable networks (CANs) without the need for post-modification, complex monomer synthesis routes, or expensive materials is highly desirable for the practical application of dynamic covalent chemistry. In the present study, the commercially available acrylate monomer, diacetone acrylamide (DAAM), was initially polymerized using a traditional radical polymerization method. Subsequently, it was cross-linked with amine agents under hot-processing conditions to form aliphatic imine-based CANs. The resulting materials exhibited glass transition temperatures (Tg) in the range of 95 to 107°C, good thermal stability, mechanical and thermomechanical properties. All samples were amenable to mechanical recycling. Post-recycling, both the tensile strength and Young's Modulus exhibited a slight deterioration, retaining approximately 80% of their original properties. The results from gel content analysis and structural characterization of both pristine and recycled samples indicate that the observed reduction in mechanical properties and Tg (approximately 70°C) can be attributed to a decrease in the degree of cross-linking and the release of aliphatic ketone groups. Furthermore, all samples demonstrated degradability under acidic conditions, attributable to their aliphatic imine structure. By using this facile approach to prepare acrylate-based imine CANs, we establish an important framework for polymer materials that are both reprocessable and biodegradable. © 2024, The Authors. All rights reserved.

关键词： Dynamics

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Highly efficient acousto-optic modulation using nonsuspended thin-fil1m lithium niobate-chalcogenide hybrid waveguides

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Light(Science & Applications) 2022年第6期11卷 1285-1295页

作者： Lei Wan Zhiqiang Yang Wenfeng Zhou Meixun Wen Tianhua Feng Siqing Zeng Dong Liu Huan Li Jingshun Ppan Ning Zhu Weiping Liu Zhaohui Li Department of Electronic Engineering College of Information Science and TechnologyJinan University510632 GuangzhouChina Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems Sun Yat-sen University510275 GuangzhouChina State Key Laboratory for Modern Optical Instrumentation College of Optical Science and EngineeringInternational Research Center for Advanced PhotonicsZhejiang UniversityZijingang Campus310058 HangzhouChina Institute of Semiconductor Science and Technology Guangdong Engineering Technology Research Center of Low Carbon and New Energy MaterialsSouth China Normal University510631 GuangzhouChina Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) 519000 ZhuhaiChina

A highly efficient on-chip acousto-optic modulator is as a key component and occupies an exceptional position in microwave-to-optical *** thin-film lithium niobate is preferentially employed to build the suspended configuration for the acoustic resonant cavity,with the aim of improving the modulation efficiency of the ***,the limited cavity length and complex fabrication recipe of the suspended prototype restrain further breakthroughs in modulation efficiency and impose challenges for waveguide *** this work,based on a nonsuspended thin-film lithium niobate-chalcogenide glass hybrid Mach-Zehnder interferometer waveguide platform,we propose and demonstrate a built-in push-pull acousto-optic modulator with a half-wave-voltage-length product VnL as low as 0.03 V cm that presents a modulation efficiency comparable to that of a state-of-the-art suspended counterpart.A microwave modulation link is demonstrated using our developed built-in push-pull acousto-optic modulator,which has the advantage of low power *** nontrivial acousto-optic modulation performance benefits from the superior photoelastic property of the chalcogenide membrane and the completely bidirectional participation of the antisymmetric Rayleigh surface acoustic wave mode excited by the impedance-matched interdigital transducer,overcoming the issue of low modulation efficiency induced by the incoordinate energy attenuation of acoustic waves applied to the Mach-Zehnder interferometer with two arms in traditional push-pull acousto-optic modulators.

关键词： modulator waveguide interferometer

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Design and therapeutic application of sodium alginate-based hydrogel with biodegradability and catalytic activity

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Science China(Technological Sciences) 2020年第11期63卷 2403-2412页

作者： LI JinFeng ZHAO JiuLong CHEN YongKang ZHENG YuTing ZHOU LingLing ZHAO JiaYan LIU YiYun LIU XiuYing WANG ShiGe College of Science University of Shanghai for Science and TechnologyShanghai 200093China Department of Gastroenterology Changhai HospitalThe Second Military Medical UniversityShanghai 222300China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430073China

How to efficiently treat cancer in a minimally invasive manner has become one of the major focuses of recent developments in *** this research,biodegradable sodium alginate(SA)hydrogel encapsulated with NaHCO_(3)and glucose oxidase(GOX)was synthesized using Fe^(3+)as the crosslinker for the tumor chemodynamic therapy(CDT)and starvation therapy(ST).Material safety assessments revealed that this hydrogel possesses good in vitro and in vivo *** tumor microenvrionment(TME),the Fe^(3+)further reacted with the intracellular glutathione and was transformed into Fe^(2+),which triggered the Fenton reaction with the H_(2)O_(2)within TME and produced abundant highly toxic·OH(hydroxyl radicals)for efficient tumor ***,the GOXcatalyzed the enzymolysis of glucose to consume the nutrient of the tumor and enhance the H_(2)O_(2)level in ***,the CO_(2)bubbles that were generated from the decomposing of NaHCO_(3)promoted the contact between glucose and *** in this research would have important implications for the present status of tumor therapy.

关键词： sodium alginate hydrogel starvation therapy chemical dynamic therapy

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Piezoelectric ceramics with high piezoelectricity and broad temperature usage range

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Journal of Materiomics 2021年第4期7卷 683-692页

作者： Qinghu Guo Fei Li Fangquan Xia Pengbin Wang Xiaoyi Gao Hua Hao Hanxing Liu Huajun Sun Shujun Zhang State Key Laboratory Silicate Materials for Architectures Center for Smart Materials and Device IntegrationSchool of Materials Science and EngineeringWuhan University of TechnologyWuhan430070China Electronic Materials Research Laboratory Key Laboratory of the Ministry of EducationXi’an Jiaotong UniversityXi’an710049China School of Chemistry and Chemical Engineering University of JinanJinan250022China Institute for Superconducting and Electronic Materials Australian Institute of Innovative MaterialsUniversity of WollongongNew South Wales2500Australia State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and EngineeringWuhan University of TechnologyWuhan430070China

There is a general observation that the Curie temperature and piezoelectric property of the ferroelectric ceramics can be enhanced only at the expense of each other,i.e.,higher piezoelectricity,lower Curie temperature,thus,limits their applications over broad temperature *** this research,Sm-modified 0.15 Pb(Mg_(1/3)Nb_(2/3))O_(3)-(0.85-x)PbZrO_(3)-xPbTiO_(3) ceramics have been studied,where excellent piezoelectric coefficients d33¼720 pC/N,d_(33)*=950 pm/V and high Curie temperature T_(C)=293℃ were simultaneously achieved for x=0.42 composition by designing the morphotropic phase boundary(MPB)with local structural *** particular significance is that a high thermal stability was observed with piezoelectric variation below 20%with temperature up to 280℃,demonstrating that the x=0.42 composition is a good candidate for piezoelectric application over broad temperature range where high temperature stability is *** work provides a good paradigm for designing highperformance piezoelectric ceramics with high thermal stability via a combination of MPB and local structural heterogeneity.

关键词： Piezoelectric ceramics Local structural heterogeneity Electromechanical response Thermal stability

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