Article
Energy & Fuels
Qianqian Sun, Jinglin Mu, Fanteng Ma, Yanyan Li, Pengfei Zhou, Tong Zhou, Xiaozhong Wu, Jin Zhou
Summary: Sulfur doping is an effective strategy to improve the storage capacity and structural stability of hard carbon anodes for potassium ion batteries.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Daping Qiu, Biao Zhang, Teng Zhang, Tong Shen, Zijing Zhao, Yanglong Hou
Summary: The sulfur doping strategy has been proven effective in improving the capacity and kinetics of carbon anodes in potassium-ion batteries. This study presents a sulfur-doped hard carbon with a high sulfur content and investigates the sulfur doping mechanism and its role in potassium storage. The results show that sulfur doping greatly enhances the performance of the carbon anode, achieving higher capacity, rate capability, and cycling stability compared to sulfur-free hard carbon.
Article
Engineering, Environmental
Haoyang Wu, Ziyue Zhang, Mingli Qin, Qiyao Yu, Wei (Alex) Wang, Leying Wang, Yuan Ma, Baorui Jia, Ramachandran Vasant Kumar, Xuanhui Qu
Summary: A unique 3D foam-like composite was designed and synthesized to enhance the performance of potassium-ion batteries, achieving high electronic conductivity and highly reversible K+ adsorption by tuning the vacancies and sizes of VCx quantum dots. The material showed high capacity and cycling stability in tests.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Chemistry, Physical
Wenli Zhang, Jian Yin, Wenxi Wang, Zahra Bayhan, Husam N. Alshareef
Summary: This review summarizes the recent technological developments in rechargeable potassium batteries, including achievements in active materials design, mechanistic understanding, exploration of new active materials, tuning the architecture, enhancing electrochemical performances, and advances in new configurations of rechargeable potassium battery systems. The review also proposes future directions and design strategies to advance rechargeable potassium batteries toward commercial applications.
Article
Nanoscience & Nanotechnology
Jiefeng Zheng, Yuanji Wu, Yong Tong, Xi Liu, Yingjuan Sun, Hongyan Li, Li Niu
Summary: This study investigates the application of nitrogen-doped mesoporous carbon spheres in potassium-ion batteries, showing that optimized conditions lead to excellent electrochemical performance with high rate capacity and cycling stability. The capacitive-controlled effects play a dominant role in the total storage mechanism of the MCS as anode material.
NANO-MICRO LETTERS
(2021)
Article
Electrochemistry
Yafei Zhang, Wenrui Wei, Chunliu Zhu, Zongying Gao, Jing Shi, Minghua Huang, Shuai Liu, Huanlei Wang
Summary: This study reports a hard template-assisted strategy for designing a class of carbonaceous materials with impressive rate capability and cycling performance as anodes for potassium-ion batteries (PIBs). The materials exhibit high nitrogen/sulfur content, high surface area, and interconnected honeycomb-like structure, which play significant roles in boosting potassium ion storage.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Peiyu Chen, Yinghui Li, Xiaolong Cheng, Huili Yu, Xiaofeng Yin, Yu Jiang, Hui Zhang, Shikuo Li, Fangzhi Huang
Summary: Biomass-derived carbon-based materials are promising anode candidates for potassium ion batteries due to their abundant resources, low cost, high specific surface area, and active sites. However, the unsatisfactory reversible capacity caused by the volume expansion during potassium ion insertion hinders their practical application. In this work, a three-dimensional (3D) probiotics-derived N-doped carbon nanosheets aggregate with highly branched carbon nanotubes (3D-PNC@CNTs) is designed as an advanced anode for PIBs.
JOURNAL OF POWER SOURCES
(2023)
Article
Materials Science, Multidisciplinary
Fei Yuan, Wei Song, Di Zhang, Yu-Sheng Wu, Zhaojin Li, Huan Wang, Wei Wang, Qiujun Wang, Bo Wang
Summary: Fluorine (F)-heteroatom-functionalized carbon anodes with semi-ionic C-F bonds can significantly increase potassium (K) storage capacity by providing more defect sites for K-ion adsorption. The carbonization temperature plays a crucial role in determining the level of defects. Density functional theory calculations confirm that the presence of semi-ionic C-F bonds enhances K-ion adsorption capability and electronic conductivity, leading to high capacity and rate. Furthermore, the coupling of semi-ionic C-F and pyridinic N bonds further optimizes K adsorption energy and conductivity, resulting in superior capacity and energy density.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yiwei Sun, Huanlei Wang, Wenrui Wei, Yulong Zheng, Lin Tao, Yixian Wang, Minghua Huang, Jing Shi, Zhi-Cheng Shi, David Mitlin
Summary: The utilization of sulfur-rich graphene nanoboxes in potassium ion battery and potassium ion capacitor anodes demonstrates exceptional rate capability, high reversible capacity, and outstanding cycling stability, along with revealing insights into the reversible energy storage mechanism and kinetic properties.
Article
Engineering, Environmental
Yanli Zhou, Ming Zhang, Qi Han, Yan Liu, Yifei Wang, Xueqin Sun, Xintao Zhang, Caifu Dong, Fuyi Jiang
Summary: 1 T-MoS2/MoOx@NC modified by hierarchical N-doped carbon exhibits excellent rate capability and long-term cycle life as an anode material for potassium-ion batteries. Additionally, it shows high reversible capacity and outstanding cyclic stability as an anode material for sodium-ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Hongqiang Xu, Boshi Cheng, Quan Du, Yuting Zhang, Haojie Duan, Ishioma L. Egun, Bo Yin, Haiyong He
Summary: By using esterification reaction, the precursors of two types of carbon are connected at the molecular level and enhance the synergistic effects in hybrid carbon, leading to improved electrochemical performance.
Article
Materials Science, Multidisciplinary
Qianqian Yao, Yanmei Gan, Zuju Ma, Xiangying Qian, Suzhi Cai, Yi Zhao, Lunhui Guan, Wei Huang
Summary: Carbonaceous materials show promise as anode candidates for potassium-ion batteries due to their high conductivity, stable properties, and abundant resources. A superior carbonaceous anode was developed in this study through a combined strategy of carbon hybridization and heteroatom doping, resulting in high capacity and superior rate capability. The use of graphene/amorphous carbon interface and sulfur doping played a key role in enhancing the electronic structure and ion adsorption/transport properties of the composite, leading to its excellent performance.
ENERGY & ENVIRONMENTAL MATERIALS
(2022)
Article
Chemistry, Physical
Liping Guo, Zhongqing Jiang, Binglu Deng, Yongjie Wang, Zhong-Jie Jiang
Summary: The carbon nanotubes supported amorphous Sb doped substoichiometric tin dulfide with a carbon coating is an efficient anode material for K+ storage. Its unique structure, combining carbon integration/coating, metal doping, and desulfurization-induced amorphous structure, contributes to its high performance.
Review
Materials Science, Multidisciplinary
Hang Lei, Jinliang Li, Xiyun Zhang, Liang Ma, Zhong Ji, Zilong Wang, Likun Pan, Shaozao Tan, Wenjie Mai
Summary: K-ion batteries (KIBs) have gained significant attention for their low cost, high operating voltage, and similarity to Li-ion batteries. This review focuses on the electrochemical reaction mechanism of hard carbons (HCs) in KIBs and summarizes approaches to improve the electrochemical performance of HC-based materials. The review also highlights advanced in situ characterization methods for understanding the evolutionary process of potassiation-depotassiation, essential for optimizing the electrochemical performance of KIBs.
Article
Electrochemistry
Gaohui Ding, Zhiqiang Li, Lingzhi Wei, Ge Yao, Helin Niu, Changlai Wang, Fangcai Zheng, Qianwang Chen
Summary: This study used a S-doping strategy to expand the interlayer distance of carbon materials and optimize doping sites, resulting in a sample NSCRs with high reversible capacity and ultra-long cycling stability. Theoretical simulation and full-cell performance confirmed the potential of NSCRs in sodium ion batteries.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Yaxi Ding, Siwen Zhang, Jiazhuo Li, Ying Sun, Bosi Yin, Hui Li, Yue Ma, Zhiqiao Wang, Hao Ge, Dawei Su, Tianyi Ma
Summary: This study demonstrates the design of a high-performance cathode for aqueous magnesium ion energy storage by doping Al3+ cations into α-MnO2 materials. The introduction of Al3+ cations adjusts the local chemical environment and precisely regulates the diffusion behavior of inserted Mg2+ cations. The enhanced elastic migration of Mg2+ cations driven by strengthened electrostatic attraction leads to lower diffusion energy barrier, improved reaction kinetics, and adaptive volume expansion.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jichi Liu, Chongchong Wu, Ian D. Gates, Baohua Jia, Zihang Huang, Tianyi Ma
Summary: Aqueous supercapacitors are considered promising for commercial energy storage devices due to their safety, low cost, and environmental friendliness. However, the challenge of achieving both long electrode lifespan and qualified energy-storage property has hindered their practical application. In this study, an electrode-electrolyte integrated optimization strategy is developed to meet real-life device requirements. By optimizing the nanomorphology and surface chemistry of the tungsten oxide anode, along with the design of a hybrid electrolyte, record-breaking durability and stable operation under extreme conditions are achieved. These results demonstrate the possibility of replacing commercial organic energy storage devices with aqueous counterparts for various daily applications.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Yutang Yu, Tianyi Ma, Hongwei Huang
Summary: Semiconducting quantum dots have attracted significant attention for energy conversion and storage due to their unique characteristics. However, a comprehensive understanding of their mechanism in specific applications is still lacking. This paper provides a detailed introduction to various 0D materials and focuses on the design and development of advanced quantum dots-based materials for energy-related applications. Challenges and perspectives of semiconducting quantum dots in energy conversion and storage are also discussed.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Environmental
Yi Zhong, Chenglin Wu, Xiaofang Jia, Sijia Sun, Daimei Chen, Wenqing Yao, Hao Ding, Junying Zhang, Tianyi Ma
Summary: A Mo-doping BiVO4/ultrathin-CoAl-LDH (Mo:BVO/CoAl-LDH-u) photoanode with self-healing property is designed by using atomic layer CoAl-LDH as cocatalyst to modify Mo:BVO through dipping coating. The Mo:BVO/CoAl-LDH-u photoanode exhibits excellent surface charge separation efficiency and photocurrent density of 5.8 mA/cm2 without scavengers. CoAl-LDH-u enhances surface charge transfer efficiency and promotes the oxygen evolution reaction rate in Mo:BiVO4, while the self-healing property of Mo:BVO/CoAl-LDH-u allows for natural restoration of photoelectrochemical performance. This work provides a facile approach for fabricating high-efficiency BiVO4 photoelectrodes for PEC water splitting.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Ge Yan, Xiaodong Sun, Yu Zhang, Hui Li, Hongwei Huang, Baohua Jia, Dawei Su, Tianyi Ma
Summary: A novel metal-free 2D/2D van der Waals heterojunction was successfully constructed by integrating a two-dimensional COF with ketoenamine linkage and defective hexagonal boron nitride. The presence of VDW heterojunction and introduced defects facilitated charge carriers separation and provided more reactive sites. The resulting heterojunction exhibited excellent solar energy catalytic activity for water splitting, surpassing the performance of pristine COF and other metal-free-based photocatalysts reported to date.
NANO-MICRO LETTERS
(2023)
Review
Chemistry, Physical
Chunyang Wang, Cheng Hu, Fang Chen, Tianyi Ma, Yihe Zhang, Hongwei Huang
Summary: Efficient conversion of mechanical energy via piezocatalysis has great potential in relieving energy crisis and environmental deterioration, and can be applied in sterilization, disease therapy, personal cleaning, organic synthesis, biomass conversion, and more. However, the low energy transformation efficiency hinders the practical applications of piezocatalysis, leading to the emergence of various strategies to enhance its catalytic activity. Nonetheless, selecting the proper design strategies for specific piezocatalytic applications is still challenging.
Article
Engineering, Environmental
Chengguo Li, Susumu Sato, Tianyi Ma, Kent C. Johnson, Thomas Durbin, Georgios Karavalakis
Summary: This study used portable emissions measurement systems (PEMS) to assess the on-road gaseous and particulate emissions from a gasoline direct injection (GDI) hybrid electric vehicle (HEV). Testing was conducted on three different driving routes representing urban, highway, and mountain driving conditions. Results showed that gaseous emissions were highest during mountain driving, while PM and soot emissions were comparable between urban and rural driving conditions but higher than highway driving. NOx emissions and soot emissions showed good correlation with vehicle acceleration but poor correlation with road grade.
EMISSION CONTROL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Sangni Wang, Riming Hu, Ding Yuan, Lei Zhang, Chao Wu, Tianyi Ma, Wei Yan, Rui Wang, Liang Liu, Xuchuan Jiang, Hua Kun Liu, Shi Xue Dou, Yuhai Dou, Jiantie Xu
Summary: In this study, ultrathin single-atomic tungsten-doped Co3O4 nanosheets were designed and synthesized as catalytic additives in the sulfur cathode for lithium-sulfur batteries (LSBs). The tungsten-doped Co3O4 not only reduces the shuttling of lithium polysulfides but also decreases the energy barrier of sulfur redox reactions, leading to accelerated electrode kinetics. The LSB cathodes with the W-x-Co3O4 electrocatalyst exhibit high reversible capacities and excellent cycling performance.
Article
Chemistry, Multidisciplinary
Changqiang Yu, Zhaohui Huang, Jie Wang, Guanshun Xie, Shuaiyu Jiang, Xiuqiang Xie, Tianyi Ma, Nan Zhang
Summary: In this study, dual metal/high-refractive-index dielectric interfaces were constructed within the SiO2 core@TiO2 shell-Pd satellite@TiO2 shell, effectively enhancing the scattering efficiency and electric field confinement. This strategy improved the absorption of Pd towards scattered light and the separation of interfacial charge carriers, leading to enhanced photoactivity. The engineering of metal/dielectric interfaces presents a promising avenue to upgrade the optical response of metals and the photocatalytic performance.
Article
Materials Science, Multidisciplinary
Bingsen Wang, Junjun Wang, Jiaqi Li, Miao Yang, Minghao Huang, Tianyi Ma, Yu Tian, Fengmin Wu
Summary: In this study, KNNLT-BNT lead-free ceramics were prepared using the solid solution method with Mn-doped to regulate the grain size and electrical properties. The doped concentrations were 0.3%, 0.4%, and 0.5%. The surface structure and internal structure of the ceramics were characterized, showing improved compactness and lattice distortion with increasing Mn-doped concentration. The electrical properties were characterized by optical band gap and dielectric constant, and the analysis revealed that the best performance was achieved at a Mn-doped concentration of 0.5%, with a normal distribution of grain size and the narrowest band gap width of 2.693 eV.
Article
Chemistry, Physical
Suwen Wang, Chengfang Song, Yanjiang Cai, Yongfu Li, Peikun Jiang, Hui Li, Bing Yu, Tianyi Ma
Summary: MXenes are commonly considered to be catalytically inert, but a strategy of interfacial polarization is proposed to improve their catalytic activity. By constructing an interfacial structure consisting of black phosphorus (BP) nanoflakes and Nb2C MXene nanosheets, the catalytic performance of MXenes is enhanced for electrochemical nitrate reduction to ammonia. The strong interfacial polarization between BP nanoflakes and Nb2C nanosheets in the prepared BP/Nb2C composite leads to the formation of positively centered Nb atoms and BP-polarized Nb atoms, which synergistically catalyze the cleavage of N-O bonds in HNO2* to form NO*. The stabilization of monatomic *N by the BP/Nb2C composite is also improved. The ammonia yield rate and Faraday efficiency of the BP/Nb2C composite are significantly higher compared to BP nanoflakes and Nb2C nanosheets.
ADVANCED ENERGY MATERIALS
(2023)
Review
Nanoscience & Nanotechnology
Daming Feng, Lixue Zhou, Timothy J. White, Anthony K. Cheetham, Tianyi Ma, Fengxia Wei
Summary: Electrocatalytic synthesis under mild conditions has emerged as an important alternative for industrial applications, particularly in the green ammonia industry. Metal-organic frameworks (MOFs) are competitive candidates for efficient electrocatalytic NH3 synthesis from nitrogen-containing molecules or ions. This review collects and discusses recent advances in MOF-derived electrocatalysts for NH3 electrosynthesis, including their application in N-2 and NO3- reduction reactions. The challenges and prospects for the rational design and fabrication of MOF-based electrocatalysts for electrochemical NH3 synthesis are also presented.
NANO-MICRO LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Kailai Zhang, Xiaodong Sun, Haijun Hu, Ge Yan, Anqi Qin, Yali Ma, Hongwei Huang, Tianyi Ma
Summary: Defect engineering is used to optimize the piezocatalytic performance of microcrystalline cellulose (MCC), improving its electrical conductivity and the separation and transfer efficiency of piezoelectric charges. The piezocatalytic H-2 production rate of MCC with the optimal defect concentration reaches 84.47 mu mol g(-1) h(-1) under ultrasonic vibration, approximately 3.74 times higher than pure MCC. Moreover, MCC with the optimal defect concentration achieves a commendable piezocatalytic H-2 production rate of 93.61 mu mol g(-1) h(-1) in natural seawater.
Article
Chemistry, Inorganic & Nuclear
Haijun Hu, Xiaodong Sun, Kailai Zhang, Yang Chen, Hui Li, Hongwei Huang, Yali Ma, Tianyi Ma
Summary: Photocatalytic water splitting using a semiconductor is an effective way to obtain clean energy. However, pure semiconductors have poor photocatalytic performance due to charge carrier recombination, limited light harvesting ability and deficiency of surface reactive sites. In this study, a new UiO-66-NH2/CdIn2S4 (NU66/CIS) heterojunction nanocomposite was synthesized using the hydrothermal method, which showed improved performance in water reduction. The NU66/CIS heterojunction had intimate connections and promoted effective transfer of electrons, resulting in enhanced H-2 production. This research offers a creative idea for constructing active MOF-based photocatalysts for H-2 evolution.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Applied
Zexing Wu, Yuxiao Gao, Zixuan Wang, Weiping Xiao, Xinping Wang, Bin Li, Zhenjiang Li, Xiaobin Liu, Tianyi Ma, Lei Wang
Summary: Defective CoP decorated with ultrafine Pt nanoparticles (Pt/d-CoP/NPC) with multifunctional electrocatalytic performances is prepared via facile pyrolysis and following chemical reduction process. The as-synthesized Pt/d-CoP/NPC exhibits high catalytic activity and stability in oxygen reduction reaction, hydrogen evolution reaction, and oxygen evolution reaction. It shows great potential for applications in renewable energy storage.
CHINESE JOURNAL OF CATALYSIS
(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.