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Yolk–shell vanadium pentoxide integrated electrode for high-performance stretchable lithium metal battery

Journal of Energy Storage 2024年 98卷

作者： Nathan, Muthu Gnana Theresa Yeon, Seon-Young Lee, Jae Seob Jo, Min Su Hwang, Gil Chan Kim, Hong-Il Wu, Fanglin Kim, Guk-Tae Liu, Ying Kim, Jin-Hee Cho, Jung Sang Kim, Jae-Kwang Department of Energy Convergence Engineering Cheongju University 258 Daeseong-ro Chungbuk Cheongju28503 Korea Republic of Department of Engineering Chemistry Chungbuk National University Chungbuk 28644 Korea Republic of Department of Earth System Sciences Yonsei University Seoul03722 Korea Republic of State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Department of Biomedical Laboratory Science College of Health Science Cheongju University Chungbuk Cheongju28503 Korea Republic of Biomedical Research Institute Chungbuk National University Hospital Chungbuk 361-763 28644 Korea Republic of

Vanadium pentoxide (V2O5) stands out as a preferred cathode material for stretchable lithium-ion batteries due to its high specific capacity, robust structural stability, cost-effectiveness, and ease of synthesis. However, its practical application is limited by a low Li+ diffusion coefficient (10−12–10−13 cm2 s−1) and poor electrical conductivity. To address these challenges, we have developed an innovative yolk-shell V2O5 architecture using a facile synthesis method involving spray pyrolysis followed by thermal treatment. This yolk-shell V2O5 is coated with a poly(ethylene oxide) (PEO) electrolyte to enhance ion transport contact areas and flexibility. The yolk-shell V2O5@PEO is then integrated with a PEO-based polymer electrolyte in a thin film configuration, paired with zig-zag truncated lithium metal anodes for stretchable lithium metal batteries. The integrated film demonstrates superior electrochemical performance due to highly reversible Li+ insertion/extraction and enhanced Li ion diffusion. The unique design of the stretchable Li-yolk-shell V2O5@PEO battery achieves an excellent specific discharge capacity of 261 mAh g−1, compared to 158 mAh g−1 for pure V2O5 at 0.1C. Additionally, the stretchable Li-yolk-shell V2O5@PEO cell exhibits a discharge capacity of 250 mAh g−1 under zero-strain conditions and 233.7 mAh g−1 under 40 % strain at 0.1C and 40 °C. Characterization through X-ray diffraction (XRD) and scanning electron microscopy (SEM) confirms the nano-sized morphology and high crystallinity of the yolk-shell V2O5. X-ray photoelectron spectroscopy (XPS) analysis reveals the transformation of yolk-shell V2O5@PEO into α-V2O5, Ε-Li0.5V2O5, δ-LiV2O5, and γ-Li2V2O5 phases during lithium-ion (de)intercalation. This cutting-edge battery design paves the way for the development of high-performance, stretchable, and flexible batteries, ideal for next-generation portable electronic devices. © 2024 Elsevier Ltd

关键词： Scanning electron microscopy

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Hierarchically Ultrasmall Hf-Based Mof: Mesopore Adjustment and Reconstruction by Recycle Using Acid Etching Strategy

SSRN

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SSRN 2022年

作者： Xu, Guihua He, Qiaoning Huang, Kexin Wang, Ying Pu, Chun Chang, Ganggang Yang, Xiao-Yu School of Engineering and Applied Sciences Harvard University CambridgeMA02138 United States School of Chemistry Chemical Engineering and Life Science State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei Wuhan430070 China State Key Laboratory of Biocatalysis and Enzyme Engineering Environmental Microbial Technology Center of Hubei Province School of Life Sciences Hubei University Hubei Wuhan430062 China

Benefiting from unique properties including faster mass transfer, more exposed active sites and large molecule recognition, hierarchically porous metal-organic frameworks (HP-MOFs), in the form of ultrasmall nanoparticles (NPs) and having self-assembled interparticle mesopores, have garnered greater attention in recent years that given to typical MOFs. However, the controllable synthesis of HP-MOFs on the nanoscale remains a significant challenge. Herein, we describe the results of a study that led to the development of the first, facile top-down acid etching method for preparing the nanosized (~15 nm) mesoporous MOF, HP-UiO-66-NH2(Hf). The sizes of mesopores in this material can be effectively tuned by simply controlling the concentration of propionic acid (PA) utilized in the preparation solution. Remarkably, the mesoporous structure of HP-UiO-66-NH2(Hf) exhibits excellent chemical stability under acid/base conditions and it can be readily constructed by using at least 4 times recycled PA etching solution. In addition, HP-UiO-66-NH2(Hf) displays high size-selectivity for adsorption of enzymes. Moreover, the nanocomposite generated by complexation with glucose oxidase (GOD), GOD@HP-UiO-66-NH2(Hf) has a higher catalytic activity and a significantly enhanced stability (recycled for at least 7 times) in promoting oxidation of glucose compared to its MOF counterpart, GOD@UiO-66-NH2(Hf) and native GOD. This study provides a potentially general strategy to design and construct stable nanosized HP-MOFs which have applications to large molecule encapsulation and catalysis. © 2022, The Authors. All rights reserved.

关键词： Glucose oxidase

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Density Functional Theory for Battery materials

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Energy & Environmental materials 2019年第4期2卷 264-279页

作者： Qiu He Bin Yu Zhaohuai Li Yan Zhao State Key Laboratory of Silicate Materials for Architectures International School of Materials Science and EngineeringWuhan University of TechnologyHubei 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyHubei 430070China The Institute of Technological Sciences Wuhan UniversityHubei 430072China

Batteries are the most widely used energy storage devices, and the lithiumion battery is the most heavily commercialized and most widely used battery type in the industry. However, the current rapid development of society requires a major advancement in battery materials to achieve high capacity,long life cycle, low cost, and reliable safety. Therefore, many new efficient energy storage materials and battery systems are being developed and explored, and their working mechanisms must be clearly understood before industrial application. In recent years, density functional theory (DFT) has been employed in the energy storage field and has made significant contributions to the understanding of electrochemical reaction mechanisms and to virtual screening of promising energy storage materials. In this review,the applications of DFT to battery materials are summarized and exemplified by some representative and up-to-date studies in the literature. The main focuses in this review include the following:1) structural stability estimation by cohesive energy, formation energy, Gibbs free energy, and phonon dispersion spectra calculations;2) the Gibbs free energy calculations for electrochemical reactions, corresponding open-circuit voltage, and theoretical capacity predictions of batteries;3) the analyses of molecule orbitals, band structures, density of states (DOS), and charge distribution of battery materials;4) ion transport kinetics in battery materials;5) simulations of adsorption processes. We conclude the review with the discussion of the assessments and validation of the popular functionals against several benchmarks, and a few suggestions have been given for the selection of density functionals for battery material systems.

关键词： battery density functional theory first principle theory theoretical calculation

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Recent advances in Ru-based electrocatalysts for oxygen evolution reaction

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Journal of materials Chemistry A 2022年第4期11卷 1634-1650页

作者： Jie Ying Jiang-Bo Chen Yu-Xuan Xiao Susana I. Cordoba de Torresi Kenneth I. Ozoemena Xiao-Yu Yang School of Chemical Engineering and Technology Sun Yat-sen University Zhuhai 519082 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Shenzhen Research Institute Joint Laboratory for Marine Advanced Materials in Pilot National Laboratory for Marine Science and Technology (Qingdao) Wuhan University of Technology Wuhan China Instituto de Química Universidade de São Paulo Av. Prof. Lineu Prestes 748 05508-000 São Paulo Brazil Molecular Sciences Institute School of Chemistry University of the Witwatersrand Private Bag 3 Johannesburg 2050 South Africa

The oxygen evolution reaction (OER), as a four-electron transfer process with large overpotential loss that is also kinetically sluggish, is one of the most crucial electrochemical processes to convert renewable energy into chemical fuels. Ruthenium (Ru)-based electrocatalysts for the OER have several advantageous features including high activity, pH-universality and the lowest price in the noble metal family. However, the instability of Ru-based catalysts in the OER is a central hurdle limiting their widespread application. This review focuses on recent developments made in the field of Ru-based OER catalysts. In the coverage, first the characteristics of Ru-based OER catalysts such as the OER mechanism, intrinsic activity and stability issue are discussed. Then, recently reported Ru-related catalysts falling in the Ru metal and Ru compound subclasses are described with special emphasis being given to a discussion of activity/stability-enhancing strategies. Finally, several challenges and future perspectives in this field are summarized. It is anticipated that this review will promote a better understanding of Ru-based OER catalysts and lead to new strategies to design active and stable Ru-materials.

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Nanoscale All-Oxide-Heterostructured Bio-inspired Optoresponsive Nociceptor

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Nano-Micro Letters 2020年第7期12卷 13-28页

作者： Mohammad Karbalaei Akbari Jie Hu Francis Verpoort Hongliang Lu Serge Zhuiykov Centre for Environmental and Energy Research Ghent University Global CampusIncheonSouth Korea Department of Green Chemistry and Technology Faculty of Bioscience EngineeringGhent University9000 GhentBelgium College of Information Engineering Taiyuan University of TechnologyTaiyuan 030024ShanxiPeople’s Republic of China Laboratory of Organometallics Catalysis and Ordered MaterialsState Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhan 430070People’s Republic of China School of Microelectronic Fudan UniversityShanghai 200433People’s Republic of China

Retina nociceptor,as a key sensory receptor,not only enables the transport of warning signals to the human central nervous system upon its exposure to noxious stimuli,but also triggers the motor response that minimizes potential *** this study,the capability of two-dimensional all-oxide-heterostructured artificial nociceptor as a single device with tunable properties was *** designed nociceptors utilize ultra-thin sub-stoichiometric TiO2–Ga2O3 heterostructures,where the thermally annealed Ga2O3 films play the role of charge transfer controlling *** is discovered that the phase transformation in Ga2O3 is accompanied by substantial jump in conductivity,induced by thermally assisted internal redox reaction of Ga2O3 nanostructure during *** is also experimentally confirmed that the charge transfer in alloxide heterostructures can be tuned and controlled by the heterointerfaces *** demonstrate that the engineering of heterointerfaces of two-dimensional(2D)films enables the fabrication of either high-sensitive TiO2–Ga2O3(Ar)or high-threshold TiO2–Ga2O3(N2)*** hypersensitive nociceptor mimics the functionalities of corneal nociceptors of human eye,whereas the delayed reaction of nociceptor is similar to high-threshold nociceptive characteristics of human sensory *** long-term stability of 2D nociceptors demonstrates the capability of heterointerfaces engineering for e ective control of charge transfer at 2D heterostructured devices.

关键词： 2D heterostructures Artificial nociceptors Bio-inspired device Heterointerfaces engineering

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High conductive graphene assembled films with porous micro-structure for freestanding and ultra-low power strain sensors

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Science Bulletin 2020年第16期65卷 1363-1370,M0004页

作者： Zhe Wang Peng Li Rongguo Song Wei Qian Huang Zhou Qianlong Wang Yong Wang Xianci Zeng Lin Ren Shilin Yan Shichun Mu Daping He Hubei Engineering Research Center of RF-Microwave Technology and Application.School of Science Wuhan University of TechnologyWuhan 430070China Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics School of ScienceWuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Graphene emerges as an ideal material for constructing high-performance strain sensors,due to its superior mechanical property and high ***,in the process of assembling graphene into macroscopic materials,its conductivity decreases ***,tedious fabrication process hinders the application of graphene-based strain *** this work,we report a freestanding graphene assembled film(GAF)with high conductivity((2.32±0.08)×105 S m-1).For the sensitive materials of strain sensors,it is higher than most of reported carbon nanotube and graphene *** advantages enable the GAF to be an ultra-low power consumption strain sensor for detecting airflow and vocal *** resistance of the GAF remains unchanged with increasing temperature(20-100℃),exhibiting a good thermal ***,the GAF can be used as a strain sensor directly without any flexible substrates,which greatly simplifies the fabrication process in comparison with most reported strain ***,the GAF used as a pressure sensor with only^4.7μW power is *** work provides a new direction for the preparation of advanced sensors with ultra-low power consumption,and the development of flexible and energy-saving electronic devices.

关键词： Strain sensor High conductivity Graphene assembled film Freestanding Ultra-low power consumption

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Ni-P cluster modified carbon nitride toward efficient photocatalytic hydrogen production

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Chinese Journal of Catalysis 2019年第6期40卷 867-874页

作者： Yajie Wang Yao Li Shaowen Cao Jiaguo Yu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina

Exploring low-cost cocatalyst to take over noble metal cocatalyst is still challenging in the field of photocatalytic proton ***,Ni-P alloy clusters are anchored onto the surface of polymeric carbon nitride through a chemical plating method and serve as highly efficient and stable cocatalyst toward photocatalytic proton *** effective role in promoting the charge separation and migration of the photocatalytic system is demonstrated for Ni-P clusters,which essentially enhance the photocatalytic H2-production rate to a value of 1506μmol h^–1 g^–*** performance is comparable to that of the benchmark of Pt-modified carbon *** work highlights that the Ni-P alloy could be a potential alternative to noble metal cocatalyst in the photocatalytic reactions.

关键词： Photocatalysis Hydrogen production Cocatalyst Ni-P alloy Charge transfer

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Enhanced Ferroelectricity and Spin Current Waves in M-Type Barium Hexaferrite

arXiv

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arXiv 2020年

作者： Li, Xue Nan, Nan Tan, Guo-Long State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China

The intrinsic ferroelectricity and related dielectric properties of M-type Barium Hexaferrite (BaFe12O19) with excellent magnetic performance are reported in this paper. A classic electric polarization (P-E) hysteresis loop with full saturation, together with two nonlinear reversal current peaks in the I-V curve and huge change of dielectric constant in the vicinity of Curie temperature, have all demonstrated themselves as sufficient experimental evidences to verify the ferroelectricity of BaFe12O19 ceramics. It holds a large remnant polarization at 108 μC/cm2 and a suitable coercive field at 117 kV/cm. Two peaks at 194°C and 451°C in the temperature-dependent dielectric spectrum of BaFe12O19 ceramics are considered to be the phase transition from ferro- to antiferro- and antiferro- to para-electric structures. A conventional strong magnetic hysteresis loop was also observed. The magnetically induced polarization upon the BaFe12O19 ceramics was achieved in the form of alternating spin current waves. A ME-coupling voltage with an amplitude of ±23mV on an applied magnetic field at 500mT was achieved. These combined multiple functional responses of large ferroelectrics and strong ferromagnetism reveal the excellent multiferroic features of BaFe12O19, which would bring forth the great opportunity to create novel electric devices with active coupling effect between magnetic and electric orders. Copyright © 2020, The Authors. All rights reserved.

关键词： Barium compounds

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Double-headed brush CsPbI 3 nanorod assemblies for high non-filtered linear polarization in optical displays

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Nano Energy 2025年 142卷

作者： Chengqi Liu Xiaoqian Wang Zisheng Tang Yanhui Jiao Dafu Zhao Manrui Liu Qi Zhang Damin Liu Zhe Pang Jiazhen He Hang Li Zhao Deng Kang Song Dongyuan Zhao Yong Liu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences Wuhan 430072 China Department of Chemistry Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative Materials State Key Laboratory of Molecular Engineering of Polymers Fudan University Shanghai 200433 China

Metal halide perovskite materials exhibit significant potential for linear polarization applications owing to their unique chemical composition, crystal structure, and exceptional optoelectronic properties. However, their intrinsic soft ionic nature, arising from dynamic lattice behavior and weak ionic bonding, presents substantial challenges in achieving precise control over assembly morphology, thereby limiting their effectiveness in linear polarization applications. Here, we report the synthesis of CsPbI 3 perovskite nanorod assemblies with a distinctive "double-headed brush" morphology via a one-step hot-injection method. This unique remote assembly structure, featuring feather-like protrusions at both ends and an enhanced moment of inertia, effectively stabilizes the horizontal orientation distribution of nanorod assemblies in solution. Consequently, the "double-headed brush" nanorod assemblies demonstrate remarkable emission anisotropy, achieving a high linear polarization degree of approximately 0.52. This study showcases precise morphological control over CsPbI 3 nanorod assemblies, leveraging the non-filtered linear polarization properties of the double-headed brush architecture, and underscores the promising potential of CsPbI 3 perovskite materials for advancing next-generation optical display.

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Surface carboxyl groups enhance the capacities of carbonaceous oxygen electrodes for aprotic lithiumoxygen batteries: A direct observation on binder-free electrodes

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Chinese Chemical Letters 2019年第12期30卷 2328-2332页

作者： Ming Li Liang Xiao Duo Wang Haoyang Dong Bohua Deng Jinping Liu School of Chemistry Chemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

In order to achieve the high capacities of carbonaceous oxygen diffusion electrodes for aprotic lithiumoxygen batteries(Li-O2 batteries),most efforts currently focus on the design of rational porous *** few works study the surface chemistry effect that might be a critical factor influencing the capacities of carbonaceous *** addition,the surface chemistry effect is very difficult to be studied in composite electrodes due to the influences of binders and ***,we propose chemically activated carbon cloth(CACC) as an ideal model to investigate the effect of surface functional groups on the discharge capacities of carbonaceous oxygen electrodes for Li-O2 *** intrinsic surface chemistry effect on the performance of carbonaceous cathode is directly observed for the first time without the influences of binders and *** indicate that the surface carboxyl groups introduced by the chemical treatment not only function as the appropriate nucleation sites for Li2 O2 but also induce the formation of toroid-like Li2 ***,the surface carboxyl modification enhances the discharge capacities from 0.48 mAh/cm^2 of pristine carbon cloth to 1.23 mAh/cm^2 of *** work presents an effective way to further optimize the carbonaceous oxygen electrodes via surface functional group engineering.

关键词： Surface functional group Chemically activated carbon cloth Carbonaceous oxygen electrode Specific discharge capacity Lithium-oxygen battery

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