Review
Chemistry, Physical
Yang Zhao, Jiazhao Huang, Jianqiang Chen, Youwen Liu, Tianyou Zhai
Summary: This review discusses the synthesis of two-dimensional transition metal dichalcogenides (TMDs) by chemical vapor deposition (CVD) and their application in electrocatalytic hydrogen evolution. The factors influencing the quality and surface morphology of TMDs synthesized by CVD are summarized, and the current research status and future prospects of CVD-grown 2D TMDs in engineering electrocatalysis are presented.
Review
Chemistry, Physical
Yang Zhao, Jiazhao Huang, Jianqiang Chen, Youwen Liu, Tianyou Zhai
Summary: Two-dimensional transition metal dichalcogenides (TMDs) have shown excellent catalytic performance for hydrogen evolution and are considered suitable substitutes for commercial Pt-based catalysts. Chemical vapor deposition (CVD) is an important technique for synthesizing controllable and high-purity TMDs for electrocatalysis and electronic devices. Recent research progress in CVD-grown TMDs nanosheets for electrocatalytic hydrogen evolution, including synthesis factors and engineering strategies, has been presented in this review.
Article
Chemistry, Physical
E. Van den Eeckhout, K. Verbeken, T. Depover
Summary: This study focuses on gaining a detailed understanding of the Devanathan-Stachurski technique through a methodological approach. Various experimental parameters such as polarization potential, charging current density, electrolyte, oxygen content, sample roughness, and electrolyte composition were modified to evaluate their influence. The study found that surface roughness and electrolyte contamination are crucial for achieving a stable entrance surface state. Additionally, a partial transient procedure can be used to determine a diffusion coefficient that approaches the lattice diffusion coefficient.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Katherine T. Young, Colter Smith, Timothy M. Krentz, Dale A. Hitchcock, Eric M. Vogel
Summary: This study presents the results of deuterium permeation experiments through chemical vapor deposited graphene on copper, revealing the impact of intrinsic defects on permeation. The findings suggest that grain boundaries are not the main diffusion pathways in graphene, and other intrinsic defects exhibit less resistance to permeation.
Article
Nanoscience & Nanotechnology
Swapnil Ghodke, Motoyuki Murashima, Dennis Christy, Ngo Van Nong, Kenji Ishikawa, Osamu Oda, Noritsugu Umehara, Masaru Hori
Summary: The mechanical properties, including compressive strength and modulus, of the maze-like CNW structure synthesized by RI-PECVD technique were analyzed using nanoindentation method, revealing an elastoplastic behavior.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Physical
Yuxuan Zhang, Han Wook Song, Kyle R. Crompton, Xixian Yang, Kejie Zhao, Sunghwan Lee
Summary: Lithium-sulfur (Li-S) batteries offer high-density and low-cost energy storage, but the transport of polysulfides hinders their practical utilization. To overcome this limitation, a novel strategy using oxidative chemical vapor deposition (oCVD) is proposed to limit the shuttling of polysulfides in the cathode. The gas-phase approach involves a conducting and conformal polymer coating that eliminates traditional binders, enhances sulfur conversion kinetics, and inhibits polysulfide shuttling. Experimental and theoretical investigations demonstrate the physical and chemical confinement of polysulfides in the cathode, resulting in high capacity retention and specific energy, proving the potential for practical applications.
Article
Chemistry, Multidisciplinary
Ping Man, Shan Jiang, Ka Ho Leung, Ka Hei Lai, Zhiqiang Guang, Honglin Chen, Lingli Huang, Tianren Chen, Shan Gao, Yung-Kang Peng, Chun-Sing Lee, Qingming Deng, Jiong Zhao, Thuc Hue Ly
Summary: A novel salt-assisted chemical vapor deposition (CVD) method was used to synthesize ultrahigh-density vacancy-rich MoS2 with controllable sulfur vacancy density. The vacancy-rich MoS2 showed exceptional catalytic activity, with an overpotential of 158.8 mV (100 mA cm(-2)) and a Tafel slope of 54.3 mV dec(-1) in 0.5 m H2SO4 electrolyte. This approach represents a significant leap toward achieving better control over the catalytic performances of 2D materials.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Ruijie Zhang, Yajing Sun, Fei Jiao, Lin Li, Dechao Geng, Wenping Hu
Summary: As a new paradigm of material science, two-dimensional (2D) heterostructured composites have attracted extensive interests because of combining the collective advantages and collaborative characteristics of individual building blocks. Molybdenum disulfide (MoS2) has demonstrated great promise as a low-cost substitute to platinum-based catalysts for electrochemical hydrogen production. However, the broad adoption of MoS2 is hindered by its limited number of active sites and low inherent electrical conductivity. One of the promising methods to further activate MoS2 is coupling engineering. Here, we demonstrate for the first time the synthesis of 2D MXene-MoS2 nanocomposites through chemical vapor deposition (CVD) approach, thus leading to precise design in structure type and orientation. The computational results show that nanocomposites have metallic properties. Owing to their unique 2D/2D structure, MXene-MoS2 nanocomposites exhibit more active catalytic sites, resulting in higher electrochemical performance, as inherited from parent excellent characteristics, and a much lower overpotential of similar to 69 mV at a current density of 10 mA center dot cm(-2) is achieved. This work paves the way to employ CVD method by coupling engineering to construct 2D nanocomposites for energy storage applications.
Article
Chemistry, Physical
Pierre Tomasini
Summary: The silicon chemical vapor deposition process via silane is determined using classical thermodynamics, showing that a linear function of temperature controls silicon growth rates and neatly maps the response of growth rate activation energy, providing clarity to the parameter space. The study demonstrates the portability of the linear function of temperature across reactors and extracts reactor scaling factors, reducing the complex silicon deposition process to its essentials through thermodynamics.
CHEMISTRY OF MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Fang Li, You Li, Yibin Zhao, Mingyan Liu, Erjun Kan, Qiongyu Li, Yi Wan
Summary: Graphene nanomesh (GNM) is an emerging graphene nanostructure with great potential applications. This study proposes a hydrogen-free chemical vapor deposition method to synthesize large-area GNM with symmetrical fractal patterns, providing guidance for mass production of GNM.
Article
Green & Sustainable Science & Technology
Daba Deme Megersa, Gutema Teshome Gudena, Youngho Kim, Hak Ki Yu
Summary: A one-step synthesis of highly stable Ru/RuSe2 nanoparticles on carbon paper is achieved using low temperature and pressure chemical vapor deposition, resulting in a heterointerface with multiple active sites for catalysis. The catalyst exhibits outstanding performance for the hydrogen evolution reaction in an alkaline solution, with low overpotentials and fast hydrogen adsorption and desorption kinetics. The Ru/RuSe2/C nanoparticle structure has the potential for large-scale production and can be used as an efficient catalyst for HER.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Biochemistry & Molecular Biology
Yotsarayuth Seekaew, Nantikan Tammanoon, Adisorn Tuantranont, Tanom Lomas, Anurat Wisitsoraat, Chatchawal Wongchoosuk
Summary: In this study, carbon dioxide gas was converted into graphene on copper foil using a thermal chemical vapor deposition method with hydrogen plasma pre-treatment. The number of graphene layers can be controlled by adjusting the pre-treatment power, and high-quality bilayer and few-layer graphene have been successfully synthesized.
Article
Chemistry, Multidisciplinary
Jingjing Si, Jinqiu Yu, Haihu Lan, Lixin Niu, Jingrui Luo, Yantao Yu, Linyang Li, Yu Ding, Lei Fu, Mengqi Zeng
Summary: This study demonstrates a chemical potential-modulated strategy to precisely synthesize various ultrahigh-phase-purity ultrathin transition-metal boride single crystals. The ultrathin crystals exhibit exceptional mechanical properties, such as an ultrahigh Young's modulus. This research provides a platform for synthesizing ultrathin single crystals with ultrahigh phase purity and enables extensive research and applications.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Bhagyashri Todankar, Pradeep Desai, Ajinkya K. Ranade, Tharangattu N. Narayanan, Masaki Tanemura, Golap Kalita
Summary: In this study, the effective trifunctional electrocatalytic properties of nitrogen-doped graphitic carbon nanofibers on a binary metal substrate were demonstrated, showing potential for application in oxygen reduction, oxygen evolution, and hydrogen evolution reactions. This indicates the significance of incorporating metal particles in electrocatalysts to enhance their performance.
Article
Electrochemistry
Cheng Li, Xiao Zhang, Jia Liu, Guoqing Liu, Guangying Sun, Wanli Xu, Qifu Zheng, Jian Xie, Hangjia Shen
Summary: Iron-N-C (Fe-N-C) materials are synthesized easily using chemical vapor deposition (CVD) and are used for hydrogen peroxide detection. The Fe-N-C modified electrodes show excellent electrochemical sensing performance for pH-universal hydrogen peroxide detection, benefitting from the advantages of the Fe-N-C configuration.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Luo Yue, Wenlin Cui, Shuqi Zheng, Yue Wu, Ximeng Dong, Guiwu Lu
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2020)
Article
Chemistry, Physical
Boyi Wang, Shuqi Zheng, Yuxuan Chen, Yue Wu, Juan Li, Zhen Ji, Yuning Mu, Zhibo Wei, Qian Liang, Jingxuan Liang
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Nanoscience & Nanotechnology
Lijun Wang, Min Hong, Qiang Sun, Yuan Wang, Luo Yue, Shuqi Zheng, Jin Zou, Zhi-Gang Chen
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Physical
B. Wang, S. Zheng, Y. Chen, Q. Wang, Z. Li, Y. Wu, J. Li, Y. Mu, S. Xu, J. Liang
Summary: This study successfully achieved multiscale phonon scattering in Cu3SbSe4 materials by co-constructing multiscale heterostructure and IIIB elements doping, which significantly suppressed the lattice thermal conductivity, resulting in lower thermal conductivity and improved thermoelectric performance of the material.
MATERIALS TODAY ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Jingxuan Liang, Xiangli Wen, Shikai Wei, Shuqi Zheng
Summary: The study shows that Fe vacancy (V-Fe) promotes the dissociation of H2S but slightly hinders the dissociation of HS, while S vacancy (V-s) significantly facilitates the adsorption and dissociation of H2S, changing the nature of the dissociation process.
Article
Chemistry, Multidisciplinary
Jingxuan Liang, Xiangli Wen, Shikai Wei, Shuqi Zheng
Summary: The presence of impurity atoms such as H, O, and S significantly influences the adsorption/dissociation of H2S on a surface. H atom reduces the dissociation barrier of H2S, while O and S atoms affect the adsorption site and dissociation process of H2S.
Article
Materials Science, Multidisciplinary
Lu Yu, Zipei Zhang, Juan Li, Wenhao Li, Shikai Wei, Sitong Wei, Guiwu Lu, Weiyu Song, Shuqi Zheng
Summary: Mg-based thermoelectric materials have garnered attention for their composition diversity, environmental friendliness, and affordability. This study demonstrates that doping with lanthanides (Gd and Ho) can enhance the thermoelectric properties of n-type Mg3.2Sb1.5Bi0.5 materials.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Zipei Zhang, Wenhao Li, Lu Yu, Sitong Wei, Shikai Wei, Zhen Ji, Weiyu Song, Shuqi Zheng
Summary: This study optimizes the electrical and thermal properties of CuGaTe2 by controlling defects, increasing the carrier concentration, and reducing the thermal conductivity. As a result, the figure of merit (ZT) is increased by 114%.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Lu Yu, Wenhao Li, Zipei Zhang, Sitong Wei, Juan Li, Zhen Ji, Jingxuan Zhuo, Guiwu Lu, Weiyu Song, Shuqi Zheng
Summary: The N-type Mg3Sb2 thermoelectric material with complex crystal structure and electronic structure can be improved by co-doping with Pr-Se/Nd-Se to increase carrier concentration and enhance thermoelectric properties. Multi-element doping is an effective strategy to improve the thermoelectric properties of materials.
MATERIALS TODAY PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Luo Yue, Pengpeng Bai, Shuqi Zheng
Summary: In this study, copper selenide (Cu2Se) was used to tune the crystal structure and carrier concentration (nH) of germanium telluride (GeTe) materials. The addition of 1% Cu2Se increased the zT value of GeTe sample by 52%. The results demonstrate that Cu2Se can effectively enhance the thermoelectric performance of GeTe by adjusting its crystal structure and carrier concentration. Furthermore, a herringbone-like crystal structure was observed, which reduced the lattice thermal conductivity.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Zipei Zhang, Sitong Luo, Lu Yu, Sitong Wei, Zhen Ji, Wenhao Li, Lay Kee Ang, Shuqi Zheng
Summary: Optimizing thermoelectric materials' performance by reducing thermal conductivity is crucial for enhancing thermoelectric efficiency. This paper demonstrates that the introduction of AgCl can influence the thermal conductivity of CuGaTe2. The introduction of AgCl decreases the thermal conductivity of CuGaTe2 while maintaining good electrical properties, resulting in an ultra-high ZT value of 1.4 at 823 K for the (CuGaTe2)0.96(AgCl)0.04 sample.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Sitong Wei, Lu Yu, Zipei Zhang, Zhen Ji, Sitong Luo, Jingxuan Liang, Weiyu Song, Shuqi Zheng
Summary: A novel doping strategy is proposed to adjust the energy band structure and carrier concentration of Cu3SbSe4-based thermoelectric materials, resulting in enhanced thermoelectric performance.
MATERIALS TODAY PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Lu Yu, Si-tong Wei, Li-jun Wang, Zi-pei Zhang, Zhen Ji, Si-tong Luo, Jing-xuan Liang, Wei-yu Song, Shu-Qi Zheng
Summary: This paper investigates a thermoelectric material based on Mg3Sb2 and explores the effects of Tb and Er dopants on its electrical performance and thermal conductivity reduction.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Lei Gao, Ximeng Dong, Shuqi Zheng, Wenhao Li, Xinyue Yang
Summary: In this study, Sb was used as a dopant to enhance the thermoelectric performance of MnGeTe2-based materials. The optimized carrier concentration resulted in excellent power factors and improved thermoelectric transport properties by introducing point defects and grain refinement. The ZT value of MnGeTe2 was increased through synergistic regulation of electrical and thermal conductivities, and the Sb doping also improved the hardness and mechanical properties of the material.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
