Article
Nanoscience & Nanotechnology
Yogesh Kumar, Elo Kibena-Poldsepp, Jekaterina Kozlova, Mihkel Rahn, Alexey Treshchalov, Arvo Kikas, Vambola Kisand, Jaan Aruvali, Aile Tamm, John C. Douglin, Scott J. Folkman, Ilario Gelmetti, Felipe A. Garces-Pineda, Jose Ramon Galan-Mascaros, Dario R. Dekel, Kaido Tammeveski
Summary: This study demonstrates that mixed metal phthalocyanine-modified multiwalled carbon nanotubes can serve as an alternative to Pt in low-temperature fuel cells; FeCoN-MWCNT and FeMnN-MWCNT catalysts exhibit excellent oxygen reduction and oxygen evolution activity; scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy are effective tools for studying the surface morphology and structure of catalysts.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Sachin Kumar, Monika Singh, Raj Pal, Uday Pratap Azad, Ashish Kumar Singh, Divya Pratap Singh, Vellaichamy Ganesan, Akhilesh Kumar Singh, Rajiv Prakash
Summary: In this study, double perovskite oxide materials were synthesized using a citrate-nitrate sol-gel method, exhibiting bifunctional catalytic activity for OER and ORR. Phase formation and structure were analyzed by XRD and SEM, confirming morphology and composition. Electrochemical tests showed superior catalytic performance of double perovskites compared to parent perovskite, with Gd-based catalysts showing the best performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Da Huo, Fangfang Song, Jianguo Hu, Junhua Yuan, Li Niu, Ai-jun Wang
Summary: The study synthesized mesoporous carbon-coated nickel phosphide nanoparticles with excellent catalytic activity towards oxygen reduction and evolution reactions, showing high stability. This work provides a new avenue for the design of bifunctional catalysts with superior OER/ORR activity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Wang Zhang, Chen-Hui Xu, Han Zheng, Rui Li, Kun Zhou
Summary: An oxygen-rich M-N-C material with a highly porous nanosheet structure is reported as a bifunctional oxygen electrocatalyst. The material contains active sites that can catalyze both the oxygen reduction reaction and the oxygen evolution reaction. The catalyst shows good catalytic activity and provides new insights into the development of efficient oxygen electrocatalysts.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Ceramics
Deshuang Hu, Ruyue Wang, Peng Du, Gang Li, Yonggang Wang, Dongyu Fan, Xuchao Pan
Summary: This study presents the preparation of coral-like Ru-doped cobalt oxide nanofibers by electrospinning and subsequent heat treatment, which optimizes the catalytic activity. The one-dimensional nanomaterials prepared by electrospinning exhibit a large specific surface area and rich porosity, significantly enhancing the catalytic activity.
CERAMICS INTERNATIONAL
(2022)
Review
Chemistry, Physical
Huan Yang, Huilin Hu, Chenfeng Xia, Feng You, Junlong Yao, Xueliang Jiang, Bao Yu Xia
Summary: This article summarizes the applications of gel materials in oxygen electrocatalysis and introduces the synthesis methods of gel materials. The author proposes the outlook for further developing advanced gel oxygen electrocatalysts.
Article
Nanoscience & Nanotechnology
Boxu Gao, Xue Yang, Xueliang Fan, Zhuxin Gui, Wenbiao Zhang, Yingshuai Jia, Sinong Wang, Yahong Zhang, Qingsheng Gao, Yi Tang
Summary: In this research, a three-step preactivation process was proposed to reconstruct commercial nickel foam (CNF) as an efficient electrocatalyst for the oxygen evolution reaction (OER). The activated CNF showed excellent OER performance in alkaline media and could tolerate long-term tests under a large current density. The calcination step led to a reconstructive surface morphology, the high-voltage treatment changed the valence of surface Ni species, and the immersion process introduced Fe heteroatoms into the CNF surface, all contributing to the improved catalytic performance.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Caimei He, Dandan Yue, Yu Li, Zhaoling Ma, Mingzhu Fan, Youguo Huang, Hongqiang Wang, Yezheng Cai, Cheng Hou, Qingyu Li
Summary: In this study, a Pd-anchored hierarchical structure metallic Co coated by nitrogen-doped carbon (Pd-NC/Co HS) was constructed as a bifunctional catalyst for ORR and OER. The unique structure and carbon isolation-induced interactions contribute to the enhanced electrocatalytic performance. The Pd-NC/Co HS also shows superior performance in zinc-air and magnesium-air batteries.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Multidisciplinary
Yulu Ge, Zhenhua Lyu, Mariana Marcos-Hernandez, Dino Villagran
Summary: This article reports a metal-free porphyrin-based two-dimensional crystalline covalent organic polymer with outstanding bifunctional electrocatalytic performance for water splitting, providing a sustainable alternative to high-quality metal electrocatalysts.
Review
Chemistry, Physical
Ting He, Bingzhe Yu, Yi Zhang, Xiaoping Ouyang, Shaowei Chen
Summary: Designing and engineering effective bifunctional electro-catalysts for the ORR and OER is crucial for the development of rechargeable metal-air batteries as a sustainable energy technology. Metal-based nanocomposites dispersed within carbon scaffolds have emerged as viable alternatives to conventional precious metal-based electrocatalysts. This review summarizes the latest progress in the synthesis and bifunctional performances of carbon-based nanocomposite catalysts with single and dual metal sites, and discusses the challenges and opportunities for further innovation in this field.
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
Article
Electrochemistry
Kaarel Kisand, Ave Sarapuu, Arvo Kikas, Vambola Kisand, Mihkel Rahn, Alexey Treshchalov, Maike Kaarik, Helle-Mai Piirsoo, Jaan Aruvali, Paarn Paiste, Jaan Leis, Vaino Sammelselg, Aile Tamm, Kaido Tammeveski
Summary: High-performance bifunctional nitrogen-doped bi- and trimetallic nanocarbon catalysts were prepared via high-temperature pyrolysis, exhibiting superior electrochemical activity in the oxygen reduction and oxygen evolution reactions due to synergistic effects between transition metals and a hierarchically porous microstructure derived from a reactive carbonitride template.
ELECTROCHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Wenlin Zhang, Eva J. Meeus, Lei Wang, Lu-Hua Zhang, Shuangcheng Yang, Bas de Bruin, Joost N. H. Reek, Fengshou Yu
Summary: This study presents a strategy for synthesizing efficient oxygen reduction reaction (ORR) catalysts by precise regulation of the electronic states of catalytic sites through molecular engineering. The catalysts, based on mononuclear iron phthalocyanine supported on multi-walled carbon nanotubes with electron-donating functional groups, showed enhanced ORR performance compared to non-functionalized catalysts. Density functional theory calculations revealed that the coordination of electron-donating groups facilitated oxygen adsorption and activation.
Article
Chemistry, Physical
Bin Wang, Katam Srinivas, Yanfang Liu, Dawei Liu, Xiaojuan Zhang, Wanli Zhang, Yuanfu Chen
Summary: In this study, a novel hierarchical nanoarchitecture of N-doped carbon nanotubes capped with carbon layer armored CoFe alloy (CoFe@NC-NT) is proposed as a bifunctional electrocatalyst for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). The CoFe@NC-NT shows remarkably low overpotential and high stability, making it highly suitable for practical applications such as Zn-air batteries.
Article
Chemistry, Physical
Shuangshuang Ren, Xinde Duan, Mingyuan Lei, Shuai Liang, Mingdao Zhang, Hegen Zheng
Summary: This study successfully developed a highly efficient bimetallic nitride catalyst, which significantly improves the performance of Zn-air batteries, exhibiting high peak power density and stable cycling performance, as well as showing potential in an all-solid-state ZAB system.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Jiankang Liu, Tingting Zhang, Feng Ji, Zhongyi Liu, Zhiyuan Wang
Summary: In this study, a series of perovskite electrocatalysts with different deficiencies were synthesized and their catalytic activities for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in alkaline electrolytes were studied. It was found that there are two distinct oxygen reduction potential regions and the catalyst with the highest deficiency showed the highest activity. This work provides guidance for the further development of easily prepared and highly active perovskite metal oxides.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Sanjit Mondal, Soumya Ranjan Das, Lipipuspa Sahoo, Sudipta Dutta, Ujjal K. Gautam
Summary: This article presents a unique property of carbon quantum dots (CQDs) that they can capture large amounts of molecular oxygen from the air and the quantity can be controlled by light irradiation. Research shows that the adsorption of oxygen by CQDs is tunable, and the oxygen enrichment enhances the photocatalytic efficiency of CQDs towards oxidation of benzylamines in the air compared to existing photocatalysts.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Applied
Paresh A. Kamble, C. P. Vinod, Virendra K. Rathod, Mannepalli Lakshmi Kantam
Summary: A series of Ni/Organoclay catalysts with different Nickel loadings were prepared by the wet impregnation method and used for the catalytic hydrogenation of levulinic acid (LA) to gamma-valerolactone (GVL). Optimum reaction conditions were determined, and Ni/Organoclay with 30% Nickel loading exhibited excellent conversion and selectivity. Various characterization techniques were used, showing that the pre-treatment of bentonite with surfactant improved the properties of the catalyst.
Article
Chemistry, Multidisciplinary
Kousik Das, Risov Das, Mohd Riyaz, Arko Parui, Debabrata Bagchi, Ashutosh Kumar Singh, Abhishek Kumar Singh, Chathakudath P. Vinod, Sebastian C. Peter
Summary: Obtaining multi-carbon products from CO2 photoreduction is a challenging catalytic process, but complex design of multicomponent interfaces can lead to unpredictable changes in the interfacial chemical environment. This study presents a novel photocatalyst, Bi19S27Cl3, which selectively converts CO2 to ethanol under visible light. Structural analysis reveals the presence of charge polarized bismuth centers in Bi19S27Cl3, which enhance the separation efficiency of photogenerated electron-hole pairs. In addition, these polarized centers promote the adsorption of CO* intermediates and accelerate the rate determining C-C coupling step.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Subhajit Chakraborty, Risov Das, Mohd Riyaz, Kousik Das, Ashutosh Kumar Singh, Debabrata Bagchi, Chathakudath P. P. Vinod, Sebastian C. C. Peter
Summary: We propose a surface reconstruction-induced C-C coupling reaction in which CO2 is converted into ethylene. The wurtzite phase of CuGaS2 undergoes in situ surface reconstruction, forming a thin CuO layer on the pristine catalyst, which facilitates selective conversion of CO2 to ethylene (C2H4). Under illumination, the catalyst efficiently converts CO2 to C2H4 with 75.1% selectivity (92.7% selectivity in terms of R-electron) and a 20.6 μmol g(-1) h(-1) evolution rate. Spectroscopic and microscopic studies, supported by theoretical analysis, reveal that operando-generated Cu2+ and existing Cu+ function as an anchor for the generated *CO, thereby facilitating C-C coupling. This study demonstrates the importance of strain-induced in situ surface reconstruction in modulating the oxidation state of Cu and controlling the CO2 reduction reaction pathway for selective ethylene formation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Raj Sekhar Roy, Sanjit Mondal, Samita Mishra, Maqsuma Banoo, Lipipuspa Sahoo, Amit Kumar, C. P. Vinod, Arijit K. De, Ujjal K. Gautam
Summary: A strategy for covalently linking adjacent layers of g-C3N4 using diethylene glycol as a precursor is introduced to achieve a high surface area in a one-step process. The introduced linkers provide mechanical stability and increase the efficiency of photocatalytic water-splitting.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Chemical
Rakhi Vishwakarma, Chathakudath P. Vinod, Virendra Rathod, Mannepalli Lakshmi Kantam
Summary: The Wadsworth-Emmons reaction was successfully conducted using the fluorapatite (FAP) catalyst, resulting in 100% conversion and 80% selectivity of α,β-unsaturated ester from the reaction of 2-methoxybenzaldehyde and triethylphosphonoacetate. The kinetic model was validated at different temperatures and the absence of mass transfer resistance was confirmed. Various factors such as catalysts, temperature, catalyst loading, solvent, mole ratio, and stirring speed were investigated. The FAP catalyst exhibited stability up to three cycles without any loss in activity as characterized by multiple methods.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Lipipuspa Sahoo, Aarti Devi, Amitava Patra
Summary: The generation of green hydrogen through electrocatalytic water splitting is a promising approach for future energy devices. In this study, a water-soluble, atomically precise Ni nanocluster (NC)-modified MoSe2 nanosheet (NS) catalyst was developed to enhance the hydrogen evolution reaction (HER) performance. The Ni/MoSe2 nanocomposite exhibited significantly improved HER efficiency, with an overpotential of 170 mV @ 10 mA/cm2, compared to bare MoSe2 NSs (350 mV). The incorporation of Ni NCs accelerated the HER kinetics of MoSe2, as indicated by the lower Tafel slope and reduced charge-transfer resistance in the nanocomposite. This work highlights the potential of combining non-precious metal NCs and transition-metal dichalcogenides to design efficient and cost-effective electrocatalysts for HER.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Rakhi Vishwakarma, C. P. Vinod, Virendra K. Rathod, Mannepalli Lakshmi Kantam
Summary: The synthesis of N,N-diphenylformamide from N-benzylideneaniline and urea hydrogen peroxide using a ZnHAP catalyst was investigated. The catalyst exhibited the highest activity with 91% conversion and 40% selectivity at 130 degrees C in 2 hours. A kinetic model was validated and the absence of mass transfer resistance was confirmed. Various factors including catalyst type, loading, temperature, mole-ratio, and stirring speed were studied. The synthesized ZnHAP catalyst was characterized and found to be stable for three cycles without loss in activity.
Article
Nanoscience & Nanotechnology
Maqsuma Banoo, Jaspreet Kaur, Arjun Kumar Sah, Raj Sekhar Roy, Monika Bhakar, Bramhaiah Kommula, Goutam Sheet, Ujjal K. Gautam
Summary: Clean water, as a fundamental human right, is still inaccessible for millions of people. A new piezo-photocatalyst with structural diversity was developed for universal wastewater decontamination. This catalyst showed high efficiency in mineralizing various contaminants using piezocatalytic, photocatalytic, and piezo-photocatalytic approaches, surpassing most catalysts developed for single contaminants. The synergy of these approaches was explained using band bending models and improved charge transfer, leading to a significant improvement in efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Bramhaiah Kommula, Maqsuma Banoo, Raj Sekhar Roy, Supriya Sil, Arjun Kumar Sah, Bhawna Rawat, Sagnik Chakraborty, Pradhyuman Meena, Kamalakannan Kailasam, Ujjal K. Gautam
Summary: Recent discoveries using polyethylene-derived carbon dots not only provide solutions to plastic pollution, but also have great potential for various applications. These carbon dots can efficiently harvest oxygen from the air, allowing the use of air as an oxidant. They can also self-eliminate and be easily disposed of. Moreover, by inducing hypoxia, programmable oxygen concentrations can be achieved within a solution. The research shows that carbon dots can be obtained from different waste plastics with high conversion efficiencies, and the oxygen harvesting ability and hypoxia levels can be controlled based on their structure.
Article
Chemistry, Physical
K. Rajendran, Mandeep Sharma, Augustine Jaison, Menon Ankitha, Ankit D. Tiwari, C. P. Vinod, Dinesh Jagadeesan
Summary: Catalytic oxidation using non-noble metal-based catalysts is a promising approach to reduce pollution caused by VOCs in the air. In this study, mesoporous Cu/TiO2 catalysts with different concentrations of Cu2+ were synthesized and characterized. The catalytic activity of Cu/TiO2 in the thermal oxidation of ethylene was investigated, showing higher activity compared to TiO2, especially with 1% Cu doping. The presence of Cu+ and Cu2+ ions, as well as oxygen vacancies, may contribute to the enhanced catalytic performance. Overall, Cu/TiO2 has demonstrated excellent catalytic activity and stability.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Reeya Garg, Mohit Jaiswal, Kaustubh Kumar, Komalpreet Kaur, Bhawna Rawat, Kamalakannan Kailasam, Ujjal K. Gautam
Summary: This study investigates an efficient composite material based on carbon nanostructures and non-noble metals, which exhibits high half-wave potential and electrocatalytic performance. The enhanced activity is attributed to the synergistic effect of high conductivity of carbon nanotubes and active Fe sites. In situ growth of CNTs prevents mass loss during catalyst material synthesis.
Article
Chemistry, Multidisciplinary
Reeya Garg, Mohit Jaiswal, Kaustubh Kumar, Komalpreet Kaur, Bhawna Rawat, Kamalakannan Kailasam, Ujjal K. Gautam
Summary: Achieving high electrocatalytic performance using a composite material of carbon nanotubes and non-noble metals can minimize metal loss and retain a high metal content, leading to efficient electrocatalysis.
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.