Article
Chemistry, Physical
Vivekanandan Raman, Ji-Eun Lee, Han-Ki Kim
Summary: To improve the flexibility of transparent conductive electrodes (TCEs), multi-stacked ITO/PEDOT:PSS hybrid superlattice (IxPy) films were designed and applied in flexible polymer-dispersed liquid crystal (PDLC), foldable thin-film heaters (TFHs), and flexible perovskite solar cells (PSCs). The optimized I6P5 film showed excellent electrical and optical properties, and the I6P5-based PDLC, TFHs, and PSCs demonstrated promising performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Marie Colin, Sam Chen, Hani Farhat, Katia Guerin, Marc Dubois
Summary: This study demonstrates that fluorination of graphene oxide films under mild conditions can result in highly fluorinated graphene oxide films with maintained structure and mechanical strength. The fluorinated films exhibit unique electrochemical properties in lithium batteries and can potentially be used as hydrophobic lubricant membranes.
Article
Chemistry, Multidisciplinary
Victor V. Petrov, Irina O. Ignatieva, Maria G. Volkova, Irina A. Gulyaeva, Ilya V. Pankov, Ekaterina M. Bayan
Summary: Transparent Al-doped ZnO films were synthesized by solid-phase pyrolysis and characterized by XRD, SEM, and TEM. The films exhibit wurtzite structure and have a uniform distribution of nanoparticles. The introduction of 1% Al results in a narrowed band gap and improved response time to radiation.
Article
Chemistry, Multidisciplinary
Pengchang Wang, Chi Zhang, Majiaqi Wu, Jianhua Zhang, Xiao Ling, Lianqiao Yang
Summary: Coating silver nanowires with different sizes of Ti3C2Tx can enhance their conductivity and stability, resulting in high-performance flexible optoelectronic devices. The optimized AgNW/MXene TCFs exhibit low sheet resistance, high optical transmittance, and excellent stability under various stress tests.
Article
Chemistry, Physical
Zhaoyang Li, Jiwen Li, Mei Xiong, Jinkun Lei, Yiyi Chen, Shengkang Zhang
Summary: This study investigates the effects of Mo single-doping and Mo-Al co-doping on the optical and electrical properties of ZnO thin films. The results show that Mo doping improves carrier concentration and conductivity in ZnO films, while excessive doping leads to the refinement of grain size and the emergence of potential energy traps. However, Mo-Al co-doping enhances the optical properties and introduces Mo5+ into the films. The study also reveals that Mo-4d impurity states appear in the valence band and contribute to the increase of absorption rate and decrease of transmittance in the films.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Refik Arat, Guobin Jia, Jan Dellith, Andrea Dellith, Jonathan Plentz
Summary: Transparent conductive hybrid thin films based on silver nanowires, zinc oxide, and graphene were prepared using solution processing methods. The films were characterized by XRD, SEM, conductivity measurement, and stability analysis, showing that graphene flakes coating improved the conductivity and stability of the hybrid films.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Konstantinos Georgiou, Apostolos Koutsioukis, Vasilios Georgakilas
Summary: Interest in transparent conductive materials, particularly graphene and its derivatives, has grown in recent years due to their unique optical and electrical properties. While previous studies have explored replacing indium doped tin oxide with graphene derivatives, a simple and effective method for producing competitive transparent conductive films (TCFs) using graphene has not yet been established. This article introduces a new procedure for fabricating TCFs with high quality, uniformity, and stability, utilizing a combination of drop casting, reduction with triethylenetetramine vapors, and doping with nitric acid. The resulting TCFs exhibit comparable conductivity to existing literature, but with the advantages of simplicity, low cost, scalability, and stability.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Multidisciplinary Sciences
Qing Zhang, Qinwei Wei, Kun Huang, Zhibo Liu, Wei Ma, Zehui Zhang, Yanfeng Zhang, Hui-Ming Cheng, Wencai Ren
Summary: High-temperature defects induced by nitrogen doping accelerate grain growth and ordering of graphene films during graphitization, resulting in highly conductive films similar to highly oriented pyrolytic graphite. This not only paves the way for the technological application of highly conductive graphene films, but also provides a general strategy to improve the synthesis and properties of other carbon materials.
NATIONAL SCIENCE REVIEW
(2023)
Article
Chemistry, Physical
Tao Wang, Li-Chao Jing, Zelong Bao, Pengfei Qian, Wenming Geng, Anita Sagadevan Ethiraj, Wen-Hao Geng, Lvyun Chen, Qingxia Zhu, Hong-Zhang Geng
Summary: The study successfully synthesized high-quality graphene nanosheets using a green method and applied them to flexible transparent conductive films, resulting in excellent performance of Au-Gr/GCNT-PET TCFs. Ultimately, the films were used as anodes for OLED devices, achieving high luminance and current efficiency.
SURFACES AND INTERFACES
(2021)
Review
Chemistry, Physical
Zhamatuofu Bai, Sheng-Chi Chen, Song-Sheng Lin, Qian Shi, Ying-Bo Lu, Shu-Mei Song, Hui Sun
Summary: This study provides a comprehensive understanding of the optoelectronic properties of CuCrO2, discussing its crystal structure, XRD spectrum, and advantages in optoelectronic devices. The study concludes that CuCrO2 exhibits best optoelectronic performance among delafossite materials and discusses band structure calculations and p-type conductivity analysis. Additionally, it highlights recent progress on intrinsic CuCrO2 and Mg/Ni doping CuCrO2, as well as prospects for future research directions.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Physical
Min Li, Tao Wang, Xiang-Le Liu, Ze-Long Bao, Peng-Fei Qian, Kun Liu, Yaling Shi, Xianbing Ming, Hong-Zhang Geng
Summary: Transparent conductive films (TCFs) with PTA/Au secondary p-type doped SWCNTs as a conductive layer were prepared and employed as heating devices. The films showed excellent optoelectronic properties, mechanical properties, stability, and electrical heating properties. Transparent flexible heaters (TFHs) made of PTA/Au dual p-type doped SWCNT TCFs demonstrated quick response to temperature changes and outstanding cycling stability.
Article
Chemistry, Physical
Shasha Wang, Xianxian Sun, Fan Xu, Minglong Yang, Weilong Yin, Jianjun Li, Yibin Li
Summary: Researchers successfully enhanced the tensile strength of graphene films by preparing GO/graphene hybrid films using graphene oxide (GO). The tensile strength of the films increased with the concentration of GO, showing excellent fracture toughness.
Article
Chemistry, Physical
Fei Wang, Zhaolong Chen, Jiawei Yang, Hao Li, Jingyuan Shan, Feng Zhang, Baolu Guan, Zhongfan Liu
Summary: Graphene glass is a material that combines the excellent properties of graphene and glass, featuring high thermal conductivity, electrical conductivity, surface hydrophobicity, superior electrothermal conversion, and high-light-transmittance characteristics. Direct growth of graphene on a high-purity quartz glass substrate using the APCVD method results in graphene glass with excellent uniformity and quality, high transmittance across visible light region, and outstanding heating performance. Compared to other graphene films, graphene glass demonstrates higher saturation temperature, shorter thermal response time, faster heating rate, better heating cycle stability, and longer-term heating stability at a constant voltage. This study shows that graphene glass transparent films have excellent electric heating characteristics and wide application prospects in various transparent electric heating fields.
ACTA PHYSICO-CHIMICA SINICA
(2021)
Article
Chemistry, Multidisciplinary
Shuyue Wang, Xiaoli Wu, Jiaxin Lu, Zhengwu Luo, Hui Xie, Xiaobin Zhang, Kaiwen Lin, Yuehui Wang
Summary: This study proposes a high concentration silver nanowires (AgNWs) conductive ink for inkjet printing, which enables the fabrication of flexible transparent conductive electrodes with low resistance and high transparency. The relationship between the printing layer and the conductivity, as well as the stability and thermal response of the electrode, are investigated. The results demonstrate the potential of inkjet-printed AgNWs-based flexible transparent conductive electrodes for developing flexible functional electronics.
Review
Chemistry, Multidisciplinary
Tengfei Qiu, Eser Metin Akinoglu, Bin Luo, Muxina Konarova, Jung-Ho Yun, Ian R. Gentle, Lianzhou Wang
Summary: Transparent conductive films (TCFs) are indispensable in optoelectronic applications, and the development of new materials that combine transparency, electrical conductivity, and variable functionality is needed. Nanomesh TCFs, with periodic or irregular structures, have emerged as promising candidates with superior mechanical properties compared to traditional metal oxide TCFs. Nanosphere lithography (NSL) is a versatile platform for fabricating nanomesh TCFs, offering a wide range of materials with diverse functions and device compatibility. This review provides a comprehensive overview of the NSL process, structure-property relationships of nanomesh TCFs, and their applications in various optoelectronic technologies.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Da Luo, Myeonggi Choe, Rafael A. Bizao, Meihui Wang, Haisheng Su, Ming Huang, Sunghwan Jin, Yunqing Li, Minhyeok Kim, Nicola M. Pugno, Bin Ren, Zonghoon Lee, Rodney S. Ruoff
Summary: A single-crystal graphene film grown on a Cu(111) foil by chemical vapor deposition (CVD) exhibits ribbon-like fold structures, which provide insights into the fracture strength and compression behavior of graphene.
ADVANCED MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Leila S. M. Alves, Matheus F. F. das Neves, Leandro Benatto, Maria Karolina Ramos, Marcelo Eising, Camilla Karla B. Q. M. de Oliveira, Aldo J. G. Zarbin, Lucimara S. Roman
Summary: Graphene oxide (GO) composites with conducting polymer poly (3,4-ethylenedioxythiophene)-poly (styrenensulfonate) (PEDOT:PSS) were used as methanol vapor sensors. An optimal ratio of 3% (v/v) PEDOT:PSS in GO dispersion was found, and the active layer was treated with sonication to change the nanostructure, resulting in higher responses when applied to methanol vapor sensors. The improved responses are due to differences found on the composite surface.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Analytical
Franciele de Matos Morawski, Gustavo Martins, Maria Karolina Ramos, Aldo J. G. Zarbin, Lucas Blanes, Marcio F. Bergamini, Luiz Humberto Marcolino-Jr
Summary: This study presents a fully 3D-printed micro-volume cell with six working electrodes, suitable for multiplex biosensing. The use of a PLA/CB conductive filament modified with GO allows for label-free immunosensing. The 3D-printed cell was successfully applied for the selective detection of COVID-19 biomarkers in saliva and serum, making it a promising tool for point-of-care sensors.
ANALYTICA CHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
Caroline Brambilla de Aquino, Jessica Eliza Silva Fonsaca, Sergio Humberto Domingues
Summary: This work demonstrates the preparation of an energy storage device by combining mixed transition metal oxides (MTMO) and conductive polymers. The optimal ratio of RuO2-WO3 was found to be 1:5, with W insertion on Ru structure correlated to the best specific capacitance. A nanocomposite of RuO2-WO3 1:5/PAni was synthesized, exhibiting remarkable capacitive properties with capacitance values reaching up to 937 mF cm(-2). A symmetrical energy storage device was built with capacitance values comparable to commercial devices. These findings highlight the potential of nanocomposites as cost-effective alternatives for energy storage devices.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Spectroscopy
Joao Manoel de Lima Junior, Rodrigo Papai, Monica Benicia Mamian-Lopez, Sergio Humberto Domingues, Lidiane Cristina Nunes, Francisco Jose Krug, Ivanise Gaubeur
Summary: Dispersive micro solid-phase extraction (D & mu;SPE) combined with laser-induced breakdown spectroscopy (LIBS) was used to develop an analytical method for the determination of metal ions in liquid samples. Graphene oxide was immobilized on agarose films and cellulose ester membranes using D & mu;SPE. Calibration curves with linear ranges were obtained, and the method was successfully applied to certified reference materials of drinking water, groundwater, and wastewater.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Materials Science, Multidisciplinary
Cristian S. Pinto, Victor H. R. Souza, Ariane Schmidt, Aldo J. G. Zarbin
Summary: PSS-free PEDOT was synthesized by chemical polymerization of EDOT at a liquid/liquid interface, resulting in a thin, transparent, flexible and conductive film self-assembled at the interface. PEDOT/graphene nanocomposite thin films were also prepared, and both components were chemically synthesized. The films were easily deposited on various solid substrates, including plastics, and characterized by spectroscopic, microscopic and electrochemical techniques. The films showed excellent reversibility, response times below 10 s, and high coloration efficiency, demonstrating their potential for electrochromic applications.
Article
Nanoscience & Nanotechnology
Yidi Shen, Sergey I. Morozov, Dulce C. Camacho-Mojica, Rodney S. Ruoff, Qi An, William A. Goddard
Summary: Ruoff and co-workers have demonstrated low-temperature homoepitaxial diamond growth from liquid gallium solvent. In this study, the researchers used density functional theory-based molecular dynamics simulations to investigate the mechanism of single-crystal diamond growth on different low-index crystallographic diamond surfaces in liquid Ga. They found that carbon linear chains form in liquid Ga and react with the growing diamond surface, resulting in the formation of carbon rings and initiation of diamond growth. The simulations showed faster growth on the (110) surface compared to the (100) or (111) surfaces, suggesting the (110) surface as a plausible growth surface in liquid Ga. The addition of Si into liquid Ga was also found to significantly increase the rate of dehydrogenating the growing surface, providing insights for optimizing low-temperature diamond growth.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Gustavo Martins, Helena R. Galeski, Gabrielle A. Andrade, Marcia G. P. Valenga, Maria K. Ramos, Aldo J. G. Zarbin, Bruno C. Janegitz, Marcelo Mueller-Santos, Emanuel M. de Souza, Luiz Humberto Marcolino-Junior, Marcio F. Bergamini
Summary: Researchers proposed a new method for assembling an electrochemical immunosensor based on a one-step approach for selective layer formation, which is crucial for rapid and reliable diagnostic tests for new viruses and diseases. This method successfully detected SARS-CoV-2 nucleocapsid protein in different matrices with low detectable values, and demonstrated selectivity against interferents. The proposed assembly strategy reduces cost, analysis time, and waste generation, making it a suitable and reliable alternative for healthcare diagnostics.
ANALYTICA CHIMICA ACTA
(2023)
Article
Chemistry, Physical
Guangwu Yang, Hao Liu, Madi Arsakay, Jingshun Shen, Yanfeng Shen, Alisher Fatkhulloev, Rodney S. Ruoff
Summary: We achieved the synthesis of an ordered 3D microporous graphene architecture via chemical vapor deposition using zeolite as the template. The introduction of Ca2+ effectively catalyzed the growth of ZTC and reduced the growth temperature. Various synthetic parameters were investigated to improve the ZTC growth, resulting in high-quality samples with continuous single-layer carbon structures.
Article
Chemistry, Analytical
Antonio Gomes dos Santos Neto, Ana Caroline Ferreira Santos, Jose Antonio de Oliveira Junior, Cristiane Luisa Jost, Camila Silva de Sousa, Marilia Oliveira Fonseca Goulart, Antonio Euzebio Goulart Santana, Sergio Yesid Gomez Gonzalez, Ederson Esteves da Silva, Jessica Eliza Silva Fonsaca, Sergio Humberto Domingues, Daiane Fossatti Dall'Oglio, Hector Aguilar Vitorino, Auro Atsushi Tanaka, Franciele de Matos Morawski, Marco Aurelio Suller Garcia
Summary: We propose a tungsten oxide and reduced graphene oxide nanocomposite (WO3-G/ MWCNT) that was mixed with MWCNTs and exhibited excellent electrochemical performance when deposited on a glassy carbon electrode. The nanocomposite showed a synergic effect towards rutin oxidation and high selectivity in the presence of interferents, demonstrating its potential as an ultra-sensitive voltammetric sensor.
MICROCHEMICAL JOURNAL
(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)
Meeting Abstract
Oncology
Justine Habault, Jeffrey A. Schneider, Susan Ha, Rachel Ruoff, Joseph Puccini, Dafna Bar-Sagi, Kwok-Kin Wong, Amina Zoubeidi, Frank Claessens, David R. Wise, Susan K. Logan, Kent Kirshenbaum, Michael J. Garabedian
Article
Chemistry, Physical
Victor H. R. Souza, Ariane Schmidt, Aldo J. G. Zarbin
Summary: Obtaining a wide color gamut and controllable color switching of electrochromic polymers (ECPs) is crucial for advanced applications. In this study, a multicolor palette of ECPs based on thin and transparent films of three ordinary conducting polymers was developed. Thirteen distinct colors were prepared by stacking the films in different combinations and numbers of layers, and their electrochromic properties were demonstrated.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Review
Chemistry, Physical
Behnoosh Bornamehr, Volker Presser, Aldo J. G. Zarbin, Yusuke Yamauchi, Samantha Husmann
Summary: Hexacyanometallates, known as Prussian blue (PB) and its analogues (PBAs), are coordination compounds with a regular and porous open structure. PBAs can be used as templates to prepare hollow and highly porous nanostructures of various compositions. This review examines the synthesis and properties of derivatives derived from PBAs. Challenges in manipulating the derivatives' properties are discussed, and synthetic approaches for target applications are presented.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Maria K. Ramos, Gustavo Martins, Luiz H. Marcolino-Junior, Marcio F. Bergamini, Marcela M. Oliveira, Aldo J. G. Zarbin
Summary: This article describes an ingenious strategy to prepare tri-component nanoarchitected thin films, comprising graphene, molybdenum sulphide, and copper oxide nanoparticles, using the liquid-liquid interfacial route. The results demonstrate that these films exhibit superior performance as anodes in aqueous sodium-ion batteries, with high capacity values and excellent recovery rates.
MATERIALS HORIZONS
(2023)
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.
