Article
Engineering, Chemical
Qingbo Huang, Song Liu, Yanan Guo, Gongping Liu, Wanqin Jin
Summary: In this study, a graphene oxide (GO) membrane with charged interlayer channels was developed for the separation of mono-/di-valent ions. The membrane achieved selective transport of monovalent ions by utilizing size-sieving and electrostatic repulsion. The introduction of polyethyleneimine (PEI) into the interlayer channels not only controlled the charge property but also increased the hydrophilicity of the membrane surface. The optimal GO-PEI membrane exhibited high permeation rates and selectivity for monovalent ions.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Physical
Ziyi Meng, Yuxi Zou, Ningning Li, Bei Wang, Xudong Fu, Rong Zhang, Shengfei Hu, Xujin Bao, Xiao Li, Feng Zhao, Qingting Liu
Summary: The performance of Nafion-based proton-exchange membrane fuel cells (PEMFCs) is significantly reduced at low relative humidities, requiring external humidification. To address this issue, a graphene oxide (GO)-intercalated microbial montmorillonite (mMMT) layered stack (GO@mMMT) was developed to improve the proton conductivity of Nafion membranes under low humidity and high temperature conditions. The GO@mMMT/Nafion composite membrane exhibited excellent proton conductivity at various humidities, with a significant increase compared to the recast Nafion membrane. The assembled single cell demonstrated higher peak power density, indicating the potential of Nafion composite membranes with GO@mMMT incorporated layered stacks for PEMFC applications with simplified water management.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Polymer Science
M. S. Rodrigues, F. S. Moreira, J. G. Silva, V. L. Cardoso, M. M. de Resende
Summary: This study produced and characterized heterogeneous ion-exchange membranes using the phase inversion technique. The membranes achieved high water permeability fluxes and increased ion exchange indices with the incorporation of resins and graphene oxide (GO). The addition of GO demonstrated promising results in producing membranes for the removal of metal ions from contaminated effluents.
Article
Nanoscience & Nanotechnology
Yinjie Lv, Lei Dong, Lvyang Cheng, Tianyi Gao, Cong Wu, Xin Chen, Tao He, Yuanyuan Cui, Wei Liu
Summary: By intercalating graphene oxide membranes with selective crown ethers, precise tailoring of monovalent cation sieving technology with enhanced water throughput is achieved. The critical interlayer distance is found to maximize water flux without sacrificing ion selectivity. The intercalated membranes can separate various specific cations with remarkably high selectivity.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Environmental Sciences
A. Jabbari, H. Ghanbari, R. Naghizadeh
Summary: In this study, graphene oxide was partially reduced and used to fabricate membranes with adjustable interlayer spacing capable of blocking salt. The membranes showed excellent water flux and reduced NaCl permeability.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Lei Wang, Fei Huang, Guoyin Zhu, Zhihui Dai
Summary: A one-step solid-state synthesis method was used to prepare orthogonal Nb2O5 nanocrystals/graphene composites as high-performance anode materials in lithium-ion batteries. The Nb2O5/G material showed excellent electrochemical performance due to its nanoscale crystalline structure and highly conductive graphene substrate. A reversible structural phase transition between orthogonal Nb2O5 and tetragonal Li1-xNbO2 was verified, and the Nb2O5/G||graphite dual-ion batteries exhibited good cyclic performance and rate capability.
Article
Engineering, Chemical
Mutsuki Oikawa, Haruka Takeuchi, Daiki Chikyu, Tomonori Ohba, Zheng-Ming Wang, Setsuko Koura
Summary: This study systematically examines the separation behaviors of inorganic cations and dye molecules through GO membrane, and finds that the permeation rate and water flux increase linearly with the strength of cationic power. Furthermore, the study reveals the dominant ion-exchange mechanism and the important role of ionicity of solutes in the separation process. These findings provide valuable insights for membrane material design and water treatment applications.
Article
Chemistry, Physical
Ruobing Yi, Xinming Xia, Rujie Yang, Risheng Yu, Fangfang Dai, Junlang Chen, Wei Liu, Minghong Wu, Jing Xu, Liang Chen
Summary: This study demonstrates the precise selective reduction of graphene oxide (GO) flakes with low epoxy content but high hydroxyl content using modified electron beam irradiation (EBI), leading to the fabrication of GO membranes with ultrahigh water permeation and effective rejection of dyes and multivalent metal ions. New hydroxyl groups generated by reducing epoxy using hydrogen radicals play a key role in controlling selective reduction and enhancing water purification performance of the membranes.
Article
Chemistry, Multidisciplinary
Yoshiaki Matsuo, Kazuhiro Sekito, Yusuke Ashida, Junichi Inamoto, Noriyuki Tamura
Summary: The charge-discharge behaviors of various graphene-like graphite samples were investigated, and the factors affecting them were discussed. By changing the oxidation method and heat treatment temperature, graphene-like graphite samples with different structural parameters were successfully prepared. The interlayer spacing and oxygen content were found to be important factors influencing the charge-discharge characteristics of the samples.
Article
Engineering, Chemical
Jing Guo, Hongfei Bao, Yanqiu Zhang, Xi Shen, Jang-Kyo Kim, Jun Ma, Lu Shao
Summary: This study demonstrates the impact of molecular intercalation on the structure of graphene oxide membranes, revealing significant effects of different-sized intercalants on stacking. By intercalating with optimal-sized molecules, a nanostructured GO membrane with superior robustness and ultrafast water permeance is achieved.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Yubo Bian, Yuhua Dong, Jiande Liu, Youmei Sun, Jinglai Duan, Jie Liu, Huijun Yao
Summary: By preparing the conical nanoporous polyimide (CNPI) membrane through ion irradiation and asymmetric chemical etching, and spin-coating the graphene oxide membrane (GOM) on it, the ionic rectification effect and ion conductivity can be significantly improved.
ACS APPLIED NANO MATERIALS
(2021)
Article
Electrochemistry
Xiang Guan, Kai Chio Chan, Lingshu Lei, Ian A. Kinloch, Mark A. Bissett
Summary: SiOx/carbon composite materials show promise as candidate for lithium-ion battery anodes, but their widespread application is hindered by poor electrical conductivity and stability issues due to volume expansion. In this study, electrodes composed of carbon-coated silicon oxide particles interleaved with electrochemically exfoliated graphene were prepared. The graphene flakes provided conductive pathways and a porous supporting structure for buffering volume expansion. SiOx/CG anodes with an optimal graphene ratio exhibited superior Li-ion storage behavior, including high cycle stability and coulombic efficiency, due to the support of the outer robust graphene layer and porous structure, which suppressed the volume expansion of silicon oxide particles during lithiation/delithiation processes and stabilized the solid electrolyte interface (SEI) layer.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Inorganic & Nuclear
Jiande Liu, Yingfan Chang, Chen Chen, Pengqian Guo, Kai Sun, Dianliang Cao, Yaodong Ma, Dequan Liu, Qiming Liu, Jie Liu, Deyan He
Summary: 2D materials, specifically monolayer SnS2 sheets within SnS2/graphene multilayers, have shown promising potential for efficient lithium and sodium storage, attributed to the synergistic effect between the monolayer SnS2 sheets and PDDA-graphene nanosheets. The multilayer structure assembled by different monolayer nanosheets exhibits excellent electrochemical performances, paving the way for further development of 2D materials in energy storage and conversion applications.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Physical
Fangfang Dai, Feng Zhou, Junlang Chen, Shanshan Liang, Liang Chen, Haiping Fang
Summary: A class of graphene oxide (GO) membranes with ultrahigh water permeance and high rejection rate for multivalent metal ions has been developed by vacuum filtration without drying treatment. These membranes exhibit outstanding stability over long-term operation and provide a simple way to fabricate GO membranes with excellent water purification performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Engineering, Chemical
Francesco Deboli, Bart Van der Bruggen, Mateusz L. Donten
Summary: This work presents a versatile chemistry platform for the fabrication of hierarchical cation and anion exchange membranes (hCEMs and hAEMs) with tuneable transport properties. The hierarchical ion exchange membranes were made by coating and UV crosslinking an acrylic ionomer on top of a PVC-SiO2 porous substrate. The properties and performance of the membranes were found to be dependent on the coating crosslinking density, with higher crosslinking density resulting in better selectivity and performance.
Article
Chemistry, Multidisciplinary
Kamran Dastafkan, Shuhao Wang, Chengli Rong, Quentin Meyer, Yibing Li, Qiang Zhang, Chuan Zhao
Summary: The study reveals that modification with molybdate oxo-anions can synergistically enhance the intrinsic oxygen evolution reaction activity of a FeNi model catalyst through boosted surface/interface interactions, resulting in accelerated transition of oxygen deprotonation to oxyhydroxide state, providing ready-to-function Fe and Ni active sites, instant transformation of Fe and Ni local microenvironments to gamma-FeOOH and beta-NiOOH phases, as well as ultrafast gas bubble growth and release.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Bartosz Gurzeda, Tae In Kim, Madi Arsakay, Myeonggi Choe, Sun Hwa Lee, Zonghoon Lee, Seung Kyu Min, Rodney S. Ruoff
Summary: The researchers prepared a pure stage-1 graphite intercalation compound through electrochemical oxidation in trifluoroacetic acid, forming both covalent and ionic bonds between the acid and graphite layers. Electrochemical reduction led to the formation of stage-2 covalent GIC, with different interlayer spacings. Subsequent oxidation did not cause exfoliation, indicating high stability of GIC in air.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jiaqi Tang, Zuozhong Liang, Haonan Qin, Xiangquan Liu, Binbin Zhai, Zhen Su, Qianqian Liu, Haitao Lei, Kaiqiang Liu, Chuan Zhao, Rui Cao, Yu Fang
Summary: This study reports a method for synthesizing large-area metalloporphyrin-based COF films and discovers their high efficiency in oxygen electrocatalysis. The study also successfully assembles a flexible Zn-air battery, demonstrating good performance and stability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Runjing Li, Anjun Hu, Chuan Zhao, Bo Zhou, Miao He, Yining Fan, Jiahao Chen, Zhongfu Yan, Yu Pan, Jianping Long
Summary: Constructing well-designed catalysts by manipulating geometrical and electrical structures is an effective strategy for high-performance lithium-oxygen chemistry. However, achieving high activity and stability in catalysts simultaneously is challenging. In this study, researchers constructed an amorphous oxide/hydroxide with mixed geometrical configurations, which exhibited good catalytic activity and excellent stability. The catalyst's disordered structure provided numerous active sites and facilitated electron transport, resulting in enhanced oxygen evolution reaction and oxygen reduction reaction. The introduction of certain metal ions further improved the catalytic performance by reducing reaction paths and inducing strong electrostatic interactions. The catalyst demonstrated high specific discharge capacity and cycling stability in lithium-oxygen batteries.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Biomaterials
Anna-Christin Joel, Aditya Rawal, Yin Yao, Andrew Jenner, Nicholas Ariotti, Margret Weissbach, Lewis Adler, Jay Stafstrom, Sean J. J. Blamires
Summary: Currently, synthetic fibre production focuses primarily on high performance materials. For high performance fibrous materials, such as silks, downsizing to a smaller scale is necessary in order to harness the properties within synthetic products. Spider cribellate silk, the smallest spider silk, has a disordered molecular structure and offers the opportunity for creating novel functional adhesives and nano meta-materials.
BIOMATERIALS SCIENCE
(2023)
Review
Chemistry, Physical
Runjing Li, Yining Fan, Chuan Zhao, Anjun Hu, Bo Zhou, Miao He, Jiahao Chen, Zhongfu Yan, Yu Pan, Jianping Long
Summary: This review discusses the application of lithium metal as a promising anode material in lithium metal batteries, as well as the corrosion and safety hazards of lithium metal in air. It proposes the solution of constructing stable air-stable protective layers and summarizes the current research progress and development prospects.
Article
Chemistry, Multidisciplinary
Jungbae Yoon, Jun Hwan Moon, Jugyeong Chung, Yu Jin Kim, Kihwan Kim, Hee Seong Kang, Yoo Sang Jeon, Eunsoo Oh, Sun Hwa Lee, Kihoon Han, Dongmin Lee, Chul-Ho Lee, Young Keun Kim, Donghun Lee
Summary: A barcode magnetic nanowire is a multi-layered magnetic structure with more than one segment type. It has attracted significant attention in bioengineering due to selective functionalization and novel interactions between layers. However, analyzing the magnetic properties of individual nanowires remains challenging. This study investigates the characterization of a single magnetic nanowire based on magnetic images obtained via wide-field quantum microscopy, allowing for extraction of critical magnetic properties.
Article
Chemistry, Multidisciplinary
Jae Hong Seo, Rajmohan Rajendiran, Sun Hwa Lee, Rodney S. Ruoff
Summary: Electrochemistry is a mild method for synthesizing polymers, but understanding the mechanisms of electrochemical polymerization is challenging. This study investigates the synthetic pathway of hyper-branched polyhydrocarbons using electrochemical methods combined with spectroscopy. The oxidation and reduction processes on the anode and cathode are analyzed to determine their functions at the start of the reaction. Real-time Fourier transform infrared measurements are used to decipher the propagation steps, and NMR spectroscopy is utilized to examine the termination by hydrogen atom suppliers. The involvement of chlorinated methanes and the solvent acetonitrile in electrochemical polymerization is also examined. Overall, these findings contribute to a better understanding of key steps in the polymerization reaction.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Chengli Rong, Kamran Dastafkan, Yuan Wang, Chuan Zhao
Summary: This article systematically reviews the latest advancements in acidic oxygen evolution reaction (OER), including reaction mechanisms, catalysts, and operando characterizations, aiming to provide insights into the rational design of advanced catalysts for large-scale applications in various energy conversion and storage systems.
ADVANCED MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Xiaojing Huang, Daniel Winter, Dominic. J. J. Glover, Claudiu. T. T. Supuran, William. A. A. Donald
Summary: Carbonic anhydrases (CAs) are metalloenzymes that play important roles in cellular processes and have been implicated in various diseases. Phosphorylation, a common post-translational modification of CAs, can significantly impact their catalytic activity and drug-binding capabilities. This study highlights the potential regulatory role of phosphorylation in CA activity and its effect on small molecule drug binding.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Medicine, Research & Experimental
Nicholas J. Caggiano, Madeleine S. Armstrong, Joanna S. Georgiou, Aditya Rawal, Brian K. Wilson, Claire E. White, Rodney D. Priestley, Robert K. Prud'homme
Summary: This study investigated the use of nanoencapsulation to improve the dissolution kinetics and oral bioavailability of the drug Delamanid. Emulsification was used to successfully prepare stable Delamanid-loaded nanoparticles. In vitro dissolution studies showed significantly enhanced dissolution kinetics compared to crystalline and micronized Delamanid.
MOLECULAR PHARMACEUTICS
(2023)
Article
Chemistry, Physical
Onur Buyukcakir, Recep Yuksel, Ferit Begar, Mustafa Erdogmus, Madi Arsakay, Sun Hwa Lee, Sang Ouk Kim, Rodney S. S. Ruoff
Summary: We synthesized and studied a redox-active quinone-based porous organic polymer (rPOP) with ultralong cycle life, making it a promising organic cathode for aqueous zinc-ion batteries. rPOP's high physicochemical stability and enhanced intrinsic conductivity from its fused-aromatic conjugated skeleton contribute to its efficient utilization of redox-active quinone units. It has a specific capacity of 120 mAh g(-1) and provides ultralong cycle life with initial capacity retention of 95% and 66% at current densities of 1.0 A g(-1) for 1000 cycles and 2.0 A g(-1) for 30,000 cycles, respectively. The co-insertion charge storage mechanism of Zn2+ and H+ was investigated and explained, contributing to a better understanding of the structure-property relationship for rPOP and the development of new organic cathode materials for high-performance aqueous batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Jun Liang, Yue Jiang, Yunlong Sun, Aditya Rawal, Qi Zhang, Zizheng Song, Yasuhiro Sakamoto, Jianhao Du, Chenlu Jiang, Shery L. Y. Chang, Linfeng Fei, Shanming Ke, Zibin Chen, Wenxian Li, Danyang Wang
Summary: In this study, the excellent piezocatalytic effect of hydrothermally synthesized BNKT nanoparticles was demonstrated, showing great potential in organic dye degradation, water splitting, medical therapy, and more. The BNKT nanoparticles with a tetragonal-rich MPB composition displayed a high kinetic rate constant for dye degradation, outperforming counterparts with different compositions. The strong piezoresponse in the BNKT nanoparticles was found to play a critical role in promoting piezocatalytic activities, despite better band alignment in other compositions.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Biochemical Research Methods
Rajmohan Rajendiran, Jae Hong Seo, Sun Hwa Lee, Rodney S. Ruoff
Summary: The synthesis pathway and large-scale synthesis of polyhydrocarbons (PHCs) were investigated using a combination of electrochemical techniques, NMR, and FTIR spectroscopy. The electrochemical polymerization of PHCs from chlorinated methanes and its reaction pathway were described. Cyclic voltammetry and chronoamperometry techniques, along with NMR and FTIR spectroscopy using isotope-labeled reactants, were used to study the electrochemical polymerization reactions.
Article
Chemistry, Physical
Lisa Djuandhi, Bruce C. C. Cowie, Aditya Rawal, Neeraj Sharma
Summary: This study reveals that poly(S-r-limonene) demonstrates superior areal capacity and long cycle lifetimes in Li-S cell chemistry. Effective Li-S capacity retention appears to rely on its low molecular weight and close proximity between the aromatic, alkene, and aliphatic functionalities.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
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.
