Article
Materials Science, Multidisciplinary
Siwei Luo, Biao Chen, Min Song, Jianhong Yi, Zhentao Yu, Zhiguo Zhang, Wei Li, Baisong Guo
Summary: A simple and efficient approach for the synthesis of Cr2O3 coated carbon nanotubes (CNTs) was developed, and the morphologies and microstructures of the coating on CNTs were investigated at different annealing temperatures. The findings showed that the amorphous (Cr2O3)(1/2)•(H2O)(3/2) coating can be transformed into amorphous Cr2O3 coating after annealing, and then into nano Cr2O3 particles with high crystallinity. The research provides important guidance for the surface modification of CNTs and lays the foundation for the industrial application of Cr2O3 coated CNTs.
MATERIALS CHARACTERIZATION
(2023)
Article
Chemistry, Applied
Rongju Zhong, Jingmei Tao, Xu Yang, Zhihua Fu, Hongmei Yang, Zhoumeng Pu, Rui Bao, Yichun Liu, Jianhong Yi
Summary: This study investigates the influence of oxygen-containing functional groups (OCFGs) on the filling rate of CNTs by filling Cu nanoparticles into acid-treated CNTs. The results show that excessive OCFGs can hinder the filling rate of CNTs, providing a new perspective for the application of CNTs in composite preparation and related fields.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Syed Q. A. Shah, Ather Mahmood, Arun Parthasarathy, Christian Binek
Summary: This study investigates the isotropic magnetoelectric (ME) response in powder samples. Through experiments and theoretical analysis on powder chromia samples under various ME field cooling protocols, it is found that a random distribution of ME grains alone does not guarantee isotropic ME response. Instead, a specific ME field cooling protocol is required to activate a nonvanishing ME response. Furthermore, the functional form of the ME response in chromia powders strongly depends on the ME field cooling protocol.
Article
Multidisciplinary Sciences
Haoran Qu, Archith Rayabharam, Xiaojian Wu, Peng Wang, Yunfeng Li, Jeffrey Fagan, Narayana R. Aluru, YuHuang Wang
Summary: Research has shown that single-wall carbon nanotubes can separate n-hexane from cyclohexane through nanopores, despite the fact that the kinetic diameters of these molecules are larger than the pore size. Simulations and experiments have revealed that n-hexane molecules can stretch inside the nanotube pores, challenging current understanding of nanopore selectivity.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Magdalena Kierkowicz, Elzbieta Pach, Julio Fraile, Concepcion Domingo, Belen Ballesteros, Gerard Tobias
Summary: This study investigates the impact of annealing temperature on the structure and morphology of single-walled carbon nanotubes (CNTs), finding that the fraction of end-closed CNTs increases with temperature and the filling yield of encapsulated payload also rises. Thermal treatment does not affect the tubular structure of CNTs, and insight is provided into the efficacy of filling from the molten phase at different annealing temperatures.
Article
Nanoscience & Nanotechnology
Ziyi Hu, Ben Breeze, Marc Walker, Eric Faulques, Jeremy Sloan, James Lloyd-Hughes
Summary: Studying the optical performance of CNTs filled with guest materials is important for understanding the photochemical nature of ultrathin 1D nanosystems. In this study, we investigated the effect of HgTe NWs on the optical properties of small-diameter SWCNTs in different environments. The results showed that the filling of HgTe NWs can modify the stiffness of SWCNTs and alter their vibrational and optical modes.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yu-Hong Lai, Pao -Wen Shao, Chang-Yang Kuo, Cheng-En Liu, Zhiwei Hu, Chen Luo, Kai Chen, Florin Radu, Yong-Jyun Wang, Junding Zheng, Chungang Duan, Chun-Fu Chang, Li Chang, Yi-Chun Chen, Sang-Wook Cheong, Ying-Hao Chu
Summary: This study investigates the modulation of magnetic and electric orders in magnetoelectric materials through quasi-static mechanical strain. It is found that mechanical bending can significantly enhance the magnetization of Cr2O3 film and adjust its electric polarization and magnetoelectric coupling. This work provides a comprehensive understanding of the relationship between strain and magnetic and electrical behaviors and opens new possibilities for combining magnetoelectric materials with flexible substrates.
Article
Polymer Science
Jaya Gupta, Ajay Kumar, Ayan Roy, Anu, Deeksha, Pawanpreet Kour, Ravi Pratap Singh, Gaurav Kumar Yogesh, Kamlesh Yadav
Summary: In this study, binary and ternary phase nanocomposites were synthesized using the melt mixing method, and the structural, optical, thermal, and dielectric properties were investigated with increasing Cr2O3 nanofiller concentration. The results showed that there was an increase in interfacial interactions between Cr2O3 nanofiller and PE matrix up to a certain concentration, but the interactions decreased with further increase in concentration. Incorporating carbon nanotubes further decreased the interactions between Cr2O3 nanofiller and PE matrix.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Samuel Faucher, Matthias Kuehne, Volodymyr B. Koman, Natalie Northrup, Daichi Kozawa, Zhe Yuan, Sylvia Xin Li, Yuwen Zeng, Takeo Ichihara, Rahul Prasanna Misra, Narayana Aluru, Daniel Blankschtein, Michael S. Strano
Summary: Researchers utilized an experimental platform based on single-walled carbon nanotubes to study water under extreme nanoscale confinement. The changes in Raman radial breathing mode were shown to reflect the increase in interior mechanical modulus caused by liquid water filling under restricted conditions, with diameter-dependent patterns observed.
Article
Energy & Fuels
Laraib Kiran, Mehmet Kadri Aydinol, Syed Sakhawat Shah, Aneela Anwar, Syed Mustansar Abbas, Doruk Bahtiyar, Muhammad Siddiq, Abdul Rehman, Mohamed Ouladsmane, Muhammad Imran Shahzad
Summary: In this study, Cr2O3 nanocomposite with multi-walled carbon nanotubes (MWCNTs) was developed using an inexpensive and reproducible coprecipitation method to reduce volume changes and enhance electronic conductivity and mechanical strength. In-situ polymerization of aniline monomer was employed to coat the nanocomposite with polyaniline (PANI), improving lithium-ion conductivity and electron transportation, leading to excellent stability. The homogenous nanocomposite of Cr2O3-MWCNTs and PANI showed good electrochemical performance, with a discharge capacity of 815 mAh g-1 at 100 mA g-1 and a coulombic efficiency of 97.5%.
Article
Materials Science, Composites
Renhao Li, Liangjun Xia, Pei Lyu, Jiajing Zhang, Yun Wang, Bo Deng, Chunhua Zhang, Xin Liu, Weilin Xu
Summary: A simple and effective strategy was developed for fabricating TPU/CNT composites with high content filling, good interfaces, and high toughness. The distribution of CNT in the TPU matrix was well regulated using a binary-solvent assisted non-solvent induced phase separation method to solve interface issues. The resulting composites showed improved thermal stability, excellent mechanical properties, and good conductivity under strain.
COMPOSITES COMMUNICATIONS
(2021)
Article
Physics, Applied
Xinrui Wang, Kakeru Ujimoto, Kentaro Toyoki, Ryoichi Nakatani, Yu Shiratsuchi
Summary: The experimental investigation found that the increase in the lattice strain of the Pt buffer layer thickness led to an increase in the Neel temperature (T-N) of the 10-nm thick Cr2O3(0001) thin films. The T-N value increased from 241.5 to 260.0 K with the variation of the Pt buffer layer thickness. The T-N value was weakly correlated with the axial ratio c/a and the lattice volume of the Cr2O3 layer V, increasing with decreasing c/a or increasing V.
APPLIED PHYSICS LETTERS
(2022)
Review
Physics, Condensed Matter
Yu Shiratsuchi, Kentaro Toyoki, Ryoichi Nakatani
Summary: The magnetoelectric (ME) effect involves a cross-coupling between unconjugated physical quantities, such as magnetization and electric field, often appearing in specific antiferromagnetic (AFM) insulators. There is a growing interest in using the ME effect for spintronic devices, where it serves as an input method for digital information. Research focuses on issues such as controlling the AFM domain state and understanding the switching mechanism and dynamics.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Physics, Fluids & Plasmas
Mohammad Heiranian, Narayana R. Aluru
Summary: This study focuses on the water transport in carbon nanotubes (CNTs), corrects the Lucas-Washburn theory, and validates it using molecular dynamics simulations. The findings are important for understanding the water filling dynamics and capillary rise in CNTs.
Article
Chemistry, Physical
Bhargav Sai Chava, Ghansham Rajendrasingh Chandel, Siddhartha Das
Summary: In this study, we report the entropy-driven filling of mildly hydrophilic boron nitride nanotubes (BNNTs) with water, which is governed by the unique structure and diameter of the nanotubes. The rotational and translational entropy components play a crucial role in the filling process, with the specific contribution depending on the diameter of the BNNTs and the structure of the water molecules.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Physics, Atomic, Molecular & Chemical
A. Alfonsov, B. Buechner, V. Kataev
Summary: The study proposes the use of a cantilever-based setup to overcome challenges posed by small sample sizes, enabling detection of static magnetic response and ESR signal in novel magnetic materials samples.
APPLIED MAGNETIC RESONANCE
(2022)
Article
Chemistry, Physical
Morgan C. Allison, Sabine Wurmehl, Bernd Buechner, Joseph L. Vella, Tilo Soehnel, Sascha A. Braeuninger, Hans-Henning Klauss, Maxim Avdeev, Frederick P. Marlton, Siegbert Schmid, Chris D. Ling
Summary: FeMn3Ge2Sn7O16 is a fully ordered stoichiometric phase with an undistorted hexagonal kagome' lattice of Mn2+ cations. By replacing silicon with germanium and anisotropic high-spin Fe2+ with isotropic high-spin Mn2+, the perfection of the kagome lattice is improved, ruling out single-ion anisotropy as the driving force for the unique properties of the compounds.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Felix Hansen, Rico Fucke, Titouan Charvin, Samuel Froeschke, Daniel Wolf, Romain Giraud, Joseph Dufouleur, Nico Graessler, Bernd Buechner, Peer Schmidt, Silke Hampel
Summary: This study proposes a method for the synthesis of mixed crystals of bismuth and antimony tellurides, which belong to the V2VI3 material family. The ideal synthesis conditions were determined through thermodynamic calculations and optimization experiments. The synthesized nanosheets exhibit high crystallinity and quality, with a significantly reduced carrier density compared to the binary compounds.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Multidisciplinary
Bertold Rasche, Julius Brunner, Tim Schramm, Madhav Prasad Ghimire, Ulrike Nitzsche, Bernd Buchner, Romain Giraud, Manuel Richter, Joseph Dufouleur
Summary: This paper presents a method using atomic force microscopy to measure the cleavage energy of van der Waals materials and quasi-two-dimensional materials. The method is validated through experiments and can be used as a tool for manipulating exfoliated flakes, offering a new route for the fabrication of nanostructures.
Article
Physics, Multidisciplinary
Seung-Ho Baek, Yeahan Sur, Kee Hoon Kim, Matthias Vojta, Bernd Buechner
Summary: Single crystals of pristine and 6% Pd-intercalated 2H-TaSe2 were studied using Se-77 nuclear magnetic resonance. The Se-77 spectrum showed line narrowing upon Pd intercalation, indicating the presence of correlated local lattice distortions above the charge density wave (CDW) transition temperature. The Knight shift data suggested a partial Fermi surface gap opening in the incommensurate CDW transition. The spin dynamics study revealed a pseudogap behavior dominating the low-energy spin excitations, which gets stronger along with superconductivity in the Pd-6% sample.
NEW JOURNAL OF PHYSICS
(2022)
Article
Multidisciplinary Sciences
Shu-Jen Wang, Michel Panhans, Ilia Lashkov, Hans Kleemann, Federico Caglieris, David Becker-Koch, Joern Vahland, Erjuan Guo, Shiyu Huang, Yulia Krupskaya, Yana Vaynzof, Bernd Buechner, Frank Ortmann, Karl Leo
Summary: The charge and thermoelectric transport in modulation-doped large-area rubrene thin-film crystals with different crystal phases were investigated. The results showed that modulation doping, together with high-mobility crystalline organic semiconductor films, is a previously unexplored strategy for achieving high-performance organic thermoelectrics. Theoretical studies provided insight into the energy landscape of the heterostructures and its influence on qualitative trends of the Seebeck coefficient.
Review
Materials Science, Multidisciplinary
Yu Liu, Huy Q. Ta, Xiaoqin Yang, Yue Zhang, Junhua Zhou, Qitao Shi, Mengqi Zeng, Thomas Gemming, Barbara Trzebicka, Lei Fu, Mark H. Ruemmeli
Summary: This review focuses on the fabrication and characterization of free-standing nanostructures suspended in graphene using transmission electron microscopy, which enables the observations with atomic resolution and investigations of the dynamic behavior of atoms/structures in such materials. Additionally, the review discusses the influence of novel metal/nonmetal dopants in graphene vacancies with varying bond configurations and the catalytic activities of single atoms/clusters located at the graphene edges. Moreover, the dynamic forming process of freestanding single-atom-thick two-dimensional (2D) clusters/metal/metallenes and 2D clusters/metal/metallenes oxides is discussed.
SCIENCE CHINA-MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Panpan Zhao, Markus Gusenbauer, Harald Oezelt, Daniel Wolf, Thomas Gemming, Thomas Schrefl, Kornelius Nielsch, Thomas George Woodcock
Summary: In this study, aberration-corrected scanning transmission electron microscopy coupled with electron energy-loss spectroscopy was used to investigate the atomistic structure and chemical composition of twin boundaries in ferromagnetic r-MnAl-C. The results showed that there was Mn enrichment at both coherent and incoherent twin boundaries, and a transition region with Mn enrichment was found at order twin boundaries. Micromagnetic simulations revealed that increasing structural and chemical disorder at the interface led to an increase in coercivity.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Marietta Seifert, Barbara Leszczynska, Robert Weser, Siegfried Menzel, Thomas Gemming, Hagen Schmidt
Summary: TiAl-based SAW devices were prepared by depositing Ti/Al multilayers on high-temperature stable CTGS substrates, and characterized for their durability and electrical behavior at intermediate high temperatures. The devices exhibited sufficient stability and a linear dependence of the resonant frequency on temperature, making them suitable for long-term applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Physics, Applied
Pawel Wyborski, Michal Gawelczyk, Pawel Podemski, Piotr Andrzej Wronski, Miroslawa Pawlyta, Sandeep Gorantla, Fauzia Jabeen, Sven Hoefling, Grzegorz Sek
Summary: This study thoroughly investigates the impact of metamorphic buffers on the structural and optical properties of GaAs-based quantum dots. Through analyzing the variation in buffer composition, the mechanisms of quantum dot emission shift are determined. Charge-trapping processes are also examined, and successful redshift of single-dot emission to different telecom wavelengths is achieved.
PHYSICAL REVIEW APPLIED
(2023)
Article
Materials Science, Multidisciplinary
A. S. Sukhanov, Y. V. Tymoshenko, A. A. Kulbakov, A. S. Cameron, V. Kocsis, H. C. Walker, A. Ivanov, J. T. Park, V. Pomjakushin, S. E. Nikitin, I. V. Morozov, I. O. Chernyavskii, S. Aswartham, A. U. B. Wolter, A. Yaresko, B. Buechner, D. S. Inosov
Summary: FeP is a special material with complex noncollinear spin order. By measuring the spin-excitation spectra, we found that the magnons in FeP have strong anisotropic dispersions. The dominant antiferromagnetic interactions between rigid ferromagnetic spin chains drive the magnetic frustration in FeP.
Article
Chemistry, Analytical
Volker Hoffmann, Bernhard Gebel, Rene Heller, Thomas Gemming
Summary: The performance of glow discharge optical emission spectrometry for matrix independent oxygen determination was investigated in this study. It was found that at a wavelength of 130nm, the emission yield of oxygen is dependent on the matrix, while at a wavelength of 777nm, oxygen has the same emission yield in different matrices. By comparing the emission yield of oxygen with that of iron, it was found that at a wavelength of 130nm, the emission yield of oxygen in FeO is most similar to that in an Al-matrix, while at a wavelength of 777nm, the emission yield of oxygen in FeO is higher than that in Cu-, Al-, and Mg-matrices.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Materials Science, Multidisciplinary
Vilmos Kocsis, David A. S. Kaib, Kira Riedl, Sebastian Gass, Paula Lampen-Kelley, David G. Mandrus, Stephen E. Nagler, Nicolas Perez, Kornelius Nielsch, Bernd Buechner, Anja U. B. Wolter, Roser Valenti
Summary: In this combined theoretical and experimental research, the anisotropic magnetic and magnetoelastic properties of the Kitaev material alpha-RuCl3 were investigated. Unusually large magnetostriction anisotropy and non-symmetric magnetic anisotropy were observed, and their origins were explained based on the relative orientation of the magnetization with respect to the crystal structure.
Article
Chemistry, Multidisciplinary
Martin Wittmann, Sandra Heckel, Felix Wurl, Zuyao Xiao, Thomas Gemming, Thomas Strassner, Juliane Simmchen
Summary: This study investigates the possibility of using organic reactions, specifically the oxidation of amines, as fuel for chemiophoretic nano- and micromotors. The motion of microswimmers is analyzed under different amine concentrations and light intensities, and the reaction products are identified and quantified using gas chromatography (GC).
CHEMICAL COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
F. Bougamha, S. Selter, Y. Shemerliuk, S. Aswartham, A. Benali, B. Buechner, H-J Grafe, A. P. Dioguardi
Summary: We report the anomalous breakdown in the scaling of the microscopic magnetic susceptibility with the bulk magnetic susceptibility in Mn2P2S6. NMR spectra provide evidence for domain rotation and spin-flop transition in the magnetic state. A spin-flop-induced splitting of the NMR spectra is observed in Ni2P2S6.
Article
Chemistry, Physical
Jie Sheng, Jingshan He, Dun Ma, Yuanbo Wang, Wu Shao, Tian Ding, Ronghao Cen, Jingwen He, Zhihao Deng, Wenjun Wu
Summary: This study presents an innovative approach to improve the photovoltaic conversion characteristics and stability of perovskite solar cells through carbon electrode interface modification. By in-situ polymerization and carbonization on the surface of nano-graphite, a dendritic structure carbon electrode is formed, reducing the work function and aligning the energy levels with perovskite. This leads to improved charge and hole collection efficiency, resulting in increased photovoltaic conversion efficiency. Furthermore, the modified carbon electrode-based perovskite solar cells exhibit exceptional stability, maintaining high efficiency even without encapsulation.
Article
Chemistry, Physical
Guodong Shi, Jian Song, Xiaoxiao Tian, Tongtong Liu, Zhanjun Wu
Summary: This study demonstrates the improvement of mechanical properties and reduction of coefficient of thermal expansion (CTE) in graphene oxide (GO)/epoxy (EP) nanocomposites by enhancing the interface between GO and EP through functionalization and incorporating rigid-flexible interphases. The results reveal that the SiO2-PEA-GO hybrid exhibits better strengthening and toughening effects, as well as lower CTE, compared to the PEA-GO hybrid due to the presence of rigid-flexible interfaces with higher bonding strength and better energy dissipation mechanisms. Additionally, the nanocomposites with longer polyetheramine (PEA) molecules in the rigid-flexible interphases demonstrate higher strength and toughness, while maintaining a lower CTE. This work provides a promising strategy for constructing adjustable flexible-rigid interfacial structures and offers potential in developing GO/EP nanocomposites with high mechanical properties and low CTE.
Article
Chemistry, Physical
Rafal Janus, Sebastian Jarczewski, Jacek Jagiello, Piotr Natkanski, Mariusz Wadrzyk, Marek Lewandowski, Marek Michalik, Piotr Kustrowski
Summary: In this study, a facile procedure for the synthesis of CMK-1 and CMK-2 carbon replicas was developed. The method utilizes basic laboratory equipment and a renewable carbon source, and operates under mild conditions. The resulting carbon mesostructures exhibit exquisite replication fidelity and structural homogeneity, making them suitable for applications in various fields.
Article
Chemistry, Physical
Anqi Wang, Connor J. MacRobbie, Alex Baranovsky, Jean-Pierre Hickey, John Z. Wen
Summary: In this study, a novel polymer-free nanothermite aerogel with a wide range of nanoparticle loading was fabricated via a new additive manufacturing process. The SEM images showed a unique porous structure formed by extra thin rGO sheets, wrapping individual nanothermite clusters. The DSC-TGA results and high-speed combustion videos confirmed the enhanced energetic performance of the printed specimen.
Article
Chemistry, Physical
Wanze Wu, Misheng Zhao, Shiwei Miao, Xiaoyan Li, Yongzhong Wu, Xiao Gong, Hangxiang Wang
Summary: Superhydrophobic solar-driven interfacial evaporator is an energy-efficient technology for seawater desalination, which is easily fabricated using robust photothermal superhydrophobic coating and substrate. The created bifunctional coating on the melamine sponge substrate shows stable and highly efficient photothermal and superhydrophobic performance for seawater desalination. This superhydrophobic solar-driven interfacial evaporator is expected to have wide applications in seawater desalination.
Article
Chemistry, Physical
Zichen Xiang, Zhi Song, Tiansheng Wang, Menghang Feng, Yijing Zhao, Qitu Zhang, Yi Hou, Lixi Wang
Summary: This study presents a co-electrospinning synthesis strategy to fabricate lightweight and porous Co@C composite nanofibres with wideband microwave attenuation capacity. The addition of MOF-derived Co additives enhances the low-frequency absorption performance.
Article
Chemistry, Physical
J. Snow, C. Olson, E. Torres, K. Shirley, E. Cazalas
Summary: This study investigates the use of a perovskite-based graphene field effect transistor (P-GFET) device for X-ray detection. The sensitivity and responsivity of the device were found to be influenced by factors such as X-ray tube voltage, current, and source-drain voltage. Simulation experiments were conducted to determine the dose rate and energy incident on the device during irradiation.
Article
Chemistry, Physical
Zuzana Jankovska, Lenka Matejova, Jonas Tokarsky, Pavlina Peikertova, Milan Dopita, Karolina Gorzolkova, Dominika Habermannova, Michal Vastyl, Jakub Belik
Summary: This study provides new insights into microwave-assisted pyrolysis of scrap tyres, demonstrating that it can produce microporous carbon black with potential application in xylene adsorption. Compared to conventional pyrolysis, microwave pyrolysis requires less time and energy while maintaining similar adsorption capacity.
Article
Chemistry, Physical
Max Bommert, Bruno Schuler, Carlo A. Pignedoli, Roland Widmer, Oliver Groning
Summary: A detailed understanding of the interaction between molecules and two-dimensional materials is crucial for incorporating functional molecular films into next-generation 2D material-organic hybrid devices. This study compares the energy level alignment of different-sized fullerenes on a Moire superstructure and finds that C-84 fullerenes can be either neutral or negatively charged depending on slight variations of the electrostatic potential. This discovery suggests a new path to achieve ambipolar charge transfer without overcoming the electronic gap of fullerenes.
Article
Chemistry, Physical
Yuanjing Cheng, Xianxian Sun, Ye Yuan, Shuang Yang, Yuanhao Ning, Dan Wang, Weilong Yin, Yibin Li
Summary: The dual-structure aerogel (GS) consisting of flexible silica fibers and graphene honeycomb structures exhibits excellent resilience, flexibility, and reliability. It also shows remarkable wave absorbing performance, making it an ideal candidate for microwave absorption applications such as flexible electronics and aerospace.
Article
Chemistry, Physical
Shuyu Fan, Yinong Chen, Shu Xiao, Kejun Shi, Xinyu Meng, Songsheng Lin, Fenghua Su, Yifan Su, Paul K. Chu
Summary: Graphene coatings are promising solid lubrication materials due to their mechanical properties. This study presents a new method for in situ deposition of high-quality graphene coatings on hard substrates using NiCo solid solution and competitive reaction strategies. The graphene coating deposited on substrates with deep NiCo solid solution demonstrates superior low-friction and durability.
Article
Chemistry, Physical
Mengdi Wang, Sanyin Qu, Yanling Chen, Qin Yao, Lidong Chen
Summary: The improved thermoelectric properties of conducting polymers are achieved by selectively capturing single-walled carbon nanotubes (SWNTs) in a conducting polymer film, leading to increased carrier mobility and reduced thermal conductivity. The resulting composite film exhibits significantly higher electrical conductivity and lower thermal conductivity compared to films with a mixture of SWNTs. This work provides a convenient and efficient method to enhance the thermoelectric properties of conducting polymers.
Review
Chemistry, Physical
Heng Wei, Weihua Li, Kareem Bachagha
Summary: This article reviews the research progress of carbon nanotube-based microwave absorbing materials (MAMs) in recent years, covering the fundamental theory, design strategies, synthesis methods, and future development directions.
Article
Chemistry, Physical
Chenguang Shi, Junlong Huang, Zongheng Cen, Tan Yi, Shaohong Liu, Ruowen Fu
Summary: This study developed a high-performance Li metal host material, which achieved dendrite-free Li deposition with a low nucleation overpotential and high Coulombic efficiencies through the combination of Ti3C2-g-PV4P sheets and Ag nanoparticles. The full cells assembled with the Li@host anode and LiFePO4 cathode exhibited high discharge capacity and excellent cycling stability, demonstrating a perspective design for future energy storage devices.
Article
Chemistry, Physical
Tomotaro Mae, Kentaro Kaneko, Hiroki Sakurai, Suguru Noda
Summary: A new partial prelithiation method for SiO/C-CNT electrodes was developed, which showed reduced irreversible capacity and achieved high energy densities with good reversibility. The method allows for precise control of the degree of prelithiation and is applicable to various chemistries.
