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SSRN 2022年

作者： Liu, Guoliang Wang, Ailian Ji, Wenxi Zhang, Fangfang Wu, Jianing Zhang, Taoyi Tang, Haolin Zhang, Haining State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Nr. 122 Luoshi Rd. Wuhan430070 China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan528200 China Research Institute of Chemical Industry Co. Ltd Beijing100013 China School of Nuclear Technology and Chemistry & Biology Hubei University of Science and Technology Nr. 88 Xianning Avenue Xianning437100 China

The practical application of quaternized polybenzimidazole (PBI) as anion exchange membranes (AEMs) is limited by the crosslinking side reaction induced low hydroxide conductivity during the operation process. In this work, the in situ crosslinking side reaction is ingeniously controlled during the membrane preparationto achieve the balance between mechanical properties and ionic conductivity of quaternized PBI based AEMs with high ion exchange capacity. The results reveal that the in situ crosslinking can not only greatly improve the mechanical properties of quaternized PBI membranes, but the high quaternization degree of ammonium hydroxide end-functionalized alkyl chain also guarantees the reasonable hydroxide conduction. The formed quaternized PBI based membrane with quaternization degree of 190% exhibits the tensile strength of 21.0 MPa under hydrated state with ion exchange capacity of 2.65 mmol g -1 and hydroxide conductivity of 82.4 mS cm -1 at 80 o C. In addition, the membrane maintains 79.7% of its initial conductivity after treating with 1 M KOH at 80 o C for 360 h. The thus-assembled alkaline direct methanol fuel cell delivers a maximum power density of 152.6 mW cm -2 using 5 M KOH and 3 M methanol fuels at 80 o C. After chronopotentiometry test at 450 mA cm -2 for 150 h, the observed 8.7% of voltage loss indicates its potential application in fuel cells. © 2022, The Authors. All rights reserved.

关键词： Ion exchange membranes

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Efficient and stable planar all-inorganic perovskite solar cells based on high-quality CsPbBr3 films with controllab.e morphology

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Journal of Energy Chemistry 2020年第7期29卷 8-15,I0001页

作者： Xiaojing Wan Ze Yu Wenming Tian Fuzhi Huang Shengye Jin Xichuan Yang Yi-Bing Cheng Anders Hagfeldt Licheng Sun State Key Laboratory of Fine Chemicals Institute of Artificial PhotosynthesisDUT-KTH Joint Education and Research Center on Molecular DevicesInstitute of Energy Science and TechnologyDalian University of Technology(DUT)Dalian 116024LiaoningChina State Key Laboratory of Molecular Reaction Dynamics and the Dynamic Research Center for Energy and Environmental Materials Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyLuoshi RoadWuhan 430070HubeiChina The Australian Centre for Advanced Photovoltaics(ACAP) Monash UniversityVictoria 3800Australia Laboratory of Photomolecular Science Ecole Polytechnique Federale de LausanneLausanne CH-1015Switzerland Department of Chemistry School of Engineering Sciences in ChemistryBiotechnology and HealthKTH Royal Institute of TechnologyStockholm 10044

All-inorganic cesium lead bromide(CsPbBr3)perovskite is attracting growing interest as functional materials in photovoltaics and other optoelectronic devices due to its superb ***,the fabrication of high-quality CsPbBr3 films still remains a big challenge by solution-process because of the low solubility of the cesium precursor in common ***,we report a facile solution-processed approach to prepare high-quality CsPbBr3 perovskite films via a two-step spin-coating method,in which the Cs Br methanol/H2 O mixed solvent solution is spin-coated onto the lead bromide films,followed by an isopropanol-assisted post-treatment to regulate the crystallization process and to control the film *** this fashion,dense and uniform CsPbBr3 films are obtained consisting of large crystalline domains with sizes up to microns and low defect *** effectiveness of the resulting CsPbBr3 films is further examined in perovskite solar cells(PSCs)with a simplified planar architecture of fluorine–doped tin oxide/compact Ti O2/CsPbBr3/carbon,which deliver a maximum power conversion efficiency of 8.11%together with excellent thermal and humidity *** present work offers a simple and effective strategy in fabrication of high-quality CsPbBr3 films for efficient and stable PSCs as well as other optoelectronic devices.

关键词： All-inorganic perovskite solar cells CsPbBr3 Morphology control Solution-processed Stability

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Ionic Liquid Modified Inorganic Nanoparticles for Gaseous Phenol Adsorption

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Journal of Wuhan University of technology(materials Science) 2019年第4期34卷 787-790页

作者： SONG Xuyan LI Ran Technology Centre of Hubei China Tobacco Industry Co. Ltd.Wuhan 430051China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Ionic liquid modified silica nanoparticles were synthesized using a simple silane chemistry,followed by substitution reaction. The phenol adsorption performance was tested using temperature programmed desorption technique. The experimental results reveal that the introduction of ionic liquids on the surface of silica nanoparticles can improve the adsorption capacity of phenol compared to the pure silica *** initial adsorption capacity reaches 0.312 mmol·g^-1 at 25 ℃ under total pressure of 0.2 bar and it decreases slightly in the following adsorption-desorption cycles. The results demonstrate that introduction of ionic liquids can improve the phenol adsorption capacity and the simple material preparation process is feasible for industrial applications.

关键词： ionic liquid phenol adsorption grafting self-assembly

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Realization of non-equilibrium process for high thermoelectric performance Sb-doped Ge Te

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Science Bulletin 2018年第11期63卷 717-725页

作者： Evariste Nshimyimana Xianli Su Hongyao Xie Wei Liu Rigui Deng Tingting Luo Yonggao Yan Xinfeng Tang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

Pristine GeTe shows inferior thermoelectric performance around unit due to the large carrier concentration induced by the presence of intrinsic high concentration of Ge vacancy. In this study, we report a thermoelectric figure of merit ZT of 1.56 at 700 K, realized in Sb-doped GeTe based thermoelectric(TE)materials via combined effect of suppression of intrinsic Ge vacancy and Sb doping. The nonequilibrium nature during melt spinning process plays very important role. For one thing, it promotes the homogeneity in Ge_(1-x)Sb_xTe samples and refines the grain size of the product. Moreover the persistent Ge precipitated as impurity phase in the traditional synthesis process is found to be dissolved back into the GeTe sublattice, accompanying with a drastic suppression of Ge vacancies concentration which in combination with Sb electron doping significantly reduced the inherent carrier concentration in *** carrier concentration, approaching the optimum carrier concentration ～3.74 × 10^(-20) cm^(-3) and a high power factor of 4.01 × 10^(-3) W m^(-1)K^(-2) at 750 K are achieved for Ge_(0.98)Sb_(0.02) Te sample. In addition,the enhanced grain boundary phonon scattering by refining the grain size through melt spinning(MS)process, coupled with the intensified alloying phonon scattering via Sb doping leads to low thermal conductivity of 1.53 W m^(-1) K^(-1) at 700 K for Ge_(0.94) Sb_(0.06) Te sample. All those contribute to a high ZT value,representing over 50% improvement in the ZT value compared to the Sb free samples, which provides an alternative way for ultrafast synthesis of high performance GeTe based thermoelectric material.

关键词： GeTe Sb doping MS-SPS process Thermoelectric properties

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Cross-Link-Functionalized Nanoparticles for Rapid Excretion in Nanotheranostic Applications

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Angewandte Chemie 2020年第46期132卷 20733-20741页

作者： Ma Z. Wang F. Zhong Y. Salazar F. Li J. Zhang M. Ren F. Wu A.M. Dai H. Department of Chemistry and Bio-X Stanford University Stanford CA 94305 United States Department of Molecular Imaging and Therapy Beckman Research Institute of the City of Hope Duarte CA United States State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China

Most NIR-IIb fluorophores are nanoparticle-based probes with long retention (≈1 month or longer) in the body. Here, we applied a novel cross-linked coating to functionalize core/shell lead sulfide/cadmium sulfide quantum dots (PbS/CdS QDs) emitting at ≈1600 nm. The coating was comprised of an amphiphilic polymer followed by three crosslinked amphiphilic polymeric layers (P3 coating), imparting high biocompatibility and >90 % excretion of QDs within 2 weeks of intravenous administration. The P3-QDs were conjugated to an engineered anti-CD8 diabody (Cys-diabody) for in vivo molecular imaging of CD8+ cytotoxic T lymphocytes (CTLs) in response to anti-PD-L1 therapy. Two-plex molecular imaging in combination with down-conversion Er nanoparticles (ErNPs) was performed for real-time in vivo monitoring of PD-L1 positive tumor cells and CTLs with cellular resolution by non-invasive NIR-IIb light sheet microscopy. Imaging of angiogenesis in the tumor microenvironment and of lymph nodes deep in the body with a signal-to-background ratio of up to ≈170 was also achieved using P3-QDs. © 2020 Wiley-VCH GmbH

关键词： excretion imaging agents nanomedicine nanoparticles second near-infrared window

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Near-infrared absorbing 2D/3D ZnIn2S4/N-doped graphene photocatalyst for highly efficient CO2 capture and photocatalytic reduction

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Science China materials 2020年第4期63卷 552-565页

作者： Yang Xia Bei Cheng Jiajie Fan Jiaguo Yu Gang Liu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China CAS Key Laboratory of Standardization and Measurement for Nanotechnology CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China

Hierarchical heterostructure photocatalysts with broad spectrum solar light utilization,particularly in the nearinfrared(NIR)region,are emerging classes of advanced photocatalytic materials for solar-driven CO2 conversion into value-added chemical ***,a novel two-demensional/three-demensional(2 D/3 D)hierarchical composite is hydrothermally synthesized by assembling vertically-aligned ZnIn2 S4(ZIS)nanowall arrays on nitrogen-doped graphene foams(NGF).The prepared ZIS/NGF composite shows enhancement in photothermal conversion ability and selective CO2 capture as well as solar-driven CO2 ***273 K and 1 atm,the ZIS/NGF composite with 1.0 wt%NGF achieves a comparably high CO2-to-N2 selectivity of 30.1,with an isosteric heat of CO2 adsorption of 48.2 kJ mol^-*** in the absence of cocatalysts and sacrificial agents,the ZIS/NGF composite with cyclab.lity converts CO2 into CH4,CO and CH3 OH under simulated solar light illumination,with the respective evolution rates about 9.1,3.5,and 5.9 times higher than that of the pristine ***-depth analysis using in-situ irradiated X-ray photoelectron spectroscopy(ISI-XPS)in conjunction with Kelvin probe measurements reveals the underlying charge transfer pathway and process from ZIS to NGF.

关键词： near-infrared light nitrogen-doped graphene foams ZnIn2S4 nanowalls selective CO2 capture CO2 photocatalytic reduction

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Directly Revealing the Structure-Property Correlation in Na -Doped Cathode materials

SSRN

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SSRN 2022年

作者： Li, Chao-Fan Chen, Liang-Dan Wu, Liang Liu, Yao Hu, Zhi-Yi Cui, Wen-Jun Dong, Wen-Da Liu, Xiaolin Yu, Wen-Bei Li, Yu Van Tendeloo, Gustaaf Su, Bao-Lian School of Materials and Chemical Engineering China Mechanics of Functional Materials Division China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Hubei Wuhan430070 China Wuhan University of Technology 122 Luoshi Road Hubei Wuhan430070 China State Key Laboratory of Silicate Materials for Architectures International School of Materials Science and Engineering Wuhan University of Technology 122 Luoshi Road Hubei Wuhan430070 China University of Antwerp Groenenborgerlaan 171 Antwerp2020 Belgium University of Namur 61 rue de Bruxelles NamurB-5000 Belgium

The introduction of Na+ is considered as an effective way to improve the performance of Ni-rich cathode materials. However, the direct structure-property correlation for Na+ doped NCM-based cathode materials remain unclear, due to the difficulty of local and accurate structural characterization for light elements such as Li and Na. Moreover, there is the complexity of the modeling for the whole Li ion battery system. To tackle the above-mentioned issues, we prepared Na+-doped LiNi0.6Co0.2Mn0.2O2 (Na-NCM622) material. The crystal structure change and lattice distortion with picometers precision of Na+-doped material is revealed by Cs-corrected scanning transmission electron microscopy (STEM). Density functional theory (DFT) and the recently proposed electrochemical model, i.e., modified Planck-Nernst-Poisson coupled Frumkin-Butler-Volmer (MPNP-FBV), has been applied to reveal correlations between activation energy and charge transfer resistance at multiscale. It is shown that Na+ doping can reduce the activation energy barrier from ΔG = 1.10 eV to 1.05 eV, resulting in a reduction of the interfacial resistance from 297 Ω to 134 Ω. Consequently, Na-NCM622 cathode delivers a superior capacity retention of 90.8% after 100 cycles compared to pristine NCM622. Our results demonstrate that the kinetics of Li+ diffusion and electrochemical reaction can be enhanced by Na+ doping the cathode material. © 2022, The Authors. All rights reserved.

关键词： High resolution transmission electron microscopy

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Universal Murray's law for optimised fluid transport in synthetic structures

arXiv

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arXiv 2023年

作者： Zhou, Binghan Cheng, Qian Chen, Zhuo Chen, Zesheng Liang, Dongfang Munro, Eric Anthony Yun, Guolin Kawai, Yoshiki Chen, Jinrui Bhowmick, Tynee Kannan, Padmanathan Karthick Occhipinti, Luigi G. Matsumoto, Hidetoshi Gardner, Julian Su, Bao-Lian Hasan, Tawfique Cambridge Graphene Centre University of Cambridge CambridgeCB3 0FA United Kingdom Department of Engineering University of Cambridge CambridgeCB2 1PZ United Kingdom Department of Materials Science and Engineering Tokyo Institute of Technology Tokyo152-8552 Japan School of Engineering University of Warwick CoventryCV4 7AL United Kingdom University of Namur NamurB-5000 Belgium State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China

materials following Murray's law are of significant interest due to their unique porous structure and optimal mass transfer ability. However, it is challenging to construct such biomimetic hierarchical channels with perfectly cylindrical pores in synthetic systems following the existing theory. Achieving superior mass transport capacity revealed by Murray's law in nanostructured materials has thus far remained out of reach. We propose a Universal Murray's law applicable to a wide range of hierarchical structures, shapes and generalised transfer processes. We experimentally demonstrate optimal flow of various fluids in hierarchically planar and tubular graphene aerogel structures to validate the proposed law. By adjusting the macroscopic pores in such aerogel-based gas sensors, we also show a significantly improved sensor response dynamic. In this work, we provide a solid framework for designing synthetic Murray materials with arbitrarily shaped channels for superior mass transfer capabilities, with future implications in catalysis, sensing and energy applications. © 2023, CC BY.

关键词： Mass transfer

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Correction : The synthesis of size-adjustable superparamagnetism Fe3O4 hollow microspheres

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Discover nano 2024年第1期19卷 163页

作者： Chao Xu Xiaolong Lu Honglian Dai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 People's Republic of China. Biomedical Materials and Engineering Research Center of Hubei Province Wuhan University of Technology Wuhan 430070 People's Republic of China. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 People's Republic of China. daihonglian@***. Biomedical Materials and Engineering Research Center of Hubei Province Wuhan University of Technology Wuhan 430070 People's Republic of China. daihonglian@***.

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Reaction Mechanisms and Activities of Dual-Metal Sites for Li-Co2 Batteries: The First-Principle Investigation

SSRN

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SSRN 2022年

作者： Zhao, Yan Liu, Xiaolin Lu, Ruihu Liu, Qian Zhou, Min Liao, Xiaobin Wang, Zhaoyang International School of Materials Science and Engineering State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei430070 China School of Chemistry and Materials Science Hubei Engineering University No. 272 Traffic AvenueHubei Xiaogan432000 China School of Materials Science and Engineering Zhejiang University Hangzhou310027 China The Institute of Technological Sciences Wuhan University Wuhan Hubei430072 China College of Materials Science and Engineering Sichuan University Chengdu610065 China

Carbon dioxide (CO2) has been widely investigated as the advanced cathode materials in Li-CO2 batteries due to its high theoretical energy density. Unfortunately, the low-efficiency and poor performance still impede the applications of Li-CO2 batteries. Herein, the density functional theory (DFT) calculations were employed to investigate the 21 dual-atom catalysts (DACs) and explore the catalytic reaction mechanism and performance descriptors for Li-CO2 conversion. We found that the DACs with lower d center preferentially have higher CO2 activation capability, and therefore defined the relationship between adsorption energies and d band centers. After further comparing the limiting potentials of the overall reactions of the four CO2-evolution path-ways, we found that the CoNiNC (0.36 V), CoMoNC (0.33 V), MnMnNC (0.40 V), FeFeNC (0.40 V) and MnMoNC (0.50 V) show the minimum overpotential at U0 for each of the four path-ways, respectively. Accordingly, we confirmed that the two linear relationships between the CO2 and LiCO2 adsorption energies and the limiting potential, which can accurately describe the overall performances toward Li-CO2 evolution on the DACs. The correlations among CO2 activation, orbital interactions and the catalytic performances obtained in this work pave a way for rational design of DACs for improving the efficiency of Li-CO2 batteries. © 2022, The Authors. All rights reserved.

关键词： Catalyst activity

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