Article
Chemistry, Multidisciplinary
Yihong Tong, Siyu Jin, Hongyuan Xu, Jiawei Li, Zhao Kong, Hong Jin, Hui Xu
Summary: In this study, a binder, GCA13, with energy dissipation function and surface stability effect was proposed to enhance the cycle life and specific capacity of silicon anodes. The introduction of citric acid molecules with short-range functions on the long-chain guar gum effectively buffered the silicon particle pulverization caused by volume change. The Si@GCA13 anode showed high reversible capacity and remarkable cycling stability even under harsh service conditions.
Article
Chemistry, Physical
Jingbo Yang, Ersha Fan, Jiao Lin, Faiza Arshad, Xiaodong Zhang, Hanyong Wang, Feng Wu, Renjie Chen, Li Li
Summary: This research focused on the recovery and regeneration of anode graphite from retired lithium-ion batteries. By using environmentally friendly citric acid as the extraction reagent, lithium was successfully extracted from spent graphite with a leaching rate of 97.58%. The regenerated graphite anode material showed excellent electrochemical performance, maintaining high discharge capacity and Coulombic efficiency after 80 cycles.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Ting Li, Yihong Tong, Jiawei Li, Zhao Kong, Xiaoxi Liu, Hongyuan Xu, Hui Xu, Keliang Wang, Hong Jin
Summary: In this study, a hierarchical copper-based MOF resembling Hericium erinaceus was successfully synthesized via a one-step hydrothermal method with the assistance of citric acid. The introduced PVP as a structure tuner modified the stacking arrangement of MOF nanosheets to achieve the Hericium erinaceus morphology, enhancing electrode stability during cycling. The MOF showed promising initial discharge capacity and retained a high capacity after 150 cycles, demonstrating its potential for high-performance lithium ion batteries.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Electrochemistry
Albina Glibo, Nicolas Eshraghi, Andreas Mautner, Marcus Jahn, Hans Flandorfer, Damian M. Cupid
Summary: SnS2 synthesized via precipitation reaction method outperforms that synthesized via hydrothermal method in electrochemical performance due to the formation of thicker Li2S layers which limits the expansion of Sn particles.
ELECTROCHIMICA ACTA
(2022)
Article
Energy & Fuels
Pengwei Li, Shao-hua Luo, Qing Wang, Yahui Zhang, Xin Liu, Caihong Xu, Jinsheng Liang, Xinhui Duan
Summary: A novel process of preparing ZnMn2O4 as anode material for lithium-ion batteries from spent zinc-manganese batteries was developed in this study. Nano ZnMn2O4 was synthesized by a low-temperature hydrothermal method and exhibited high initial discharge specific capacity.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Jay Singh, Seulgi Lee, Priya Yadav, Sungjin Kim, Jaekook Kim, Alok Kumar Rai
Summary: In this study, a hydrothermal synthesis method was used to produce a mulberry-like mesoporous CoMoO4 anode material with improved electrochemical properties for lithium ion and sodium ion batteries. The unique morphology of the CoMoO4 material led to high reversible discharge capacity and long cycle stability, making it a promising alternative high-performance anode material for sodium ion battery applications.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Kexing Cai, Shao-hua Luo, Jun Cong, Kun Li, Sheng-xue Yan, Peng-qing Hou, Yapeng Song, Qing Wang, Yahui Zhang, Xin Liu, Xuefei Lei, Wenning Mu, Jianbo Gao
Summary: In this study, a block structured lithium-ion battery anode material ZnMn2O4 was prepared using the citric acid sol-gel combustion method. The thermal decomposition process and electrochemical performance of the material were investigated. The results showed that the material had an uneven block structure and exhibited high initial capacity and cycling stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Jingshi Wang, Zhigang Shen, Min Yi, Xiaojing Zhang
Summary: Muconic acid has been demonstrated as a high-performance organic anode material for lithium ion battery, showing a real reversible specific capacity of 768.7 mAh g(-1) at a current density of 100 mA g(-1) with a capacity retention of 78% at 2 A g(-1). This research may have significant implications in the field of batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Xiaohang Ma, Changyong Yu, Xian Cao, Jing Hu, Nan Cheng, Hao Chen, Pengzhi Chen, Yanqing Guo, Jialong Chen, Zhenfa Zi, Jianming Dai
Summary: Nb26Mo4O77 samples are synthesized by hydrothermal and solid-state method, exhibiting different structural stability, initial coulombic efficiency, cyclability, and rate capability. Among them, the rod-like nanoparticles synthesized by hydrothermal method show better performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
X. Li, Z. Lin, N. Jin, L. Sun, X. Yang, Y. Liu
Summary: Breaking the capacity barrier in intercalation-type anode materials for lithium-ion batteries while preserving other essential electrochemical properties is a challenging task. This study demonstrates the feasibility of defect engineering to provide extra active sites for electrochemical reactions in perovskite SrVO3. The dual-phase SrxVO3-d electrodes, with a unique amorphous-crystalline structure, show a high specific capacity and excellent cycling stability when paired with LiFePO4 cathode, paving the way for advancements in Li-ion battery technology.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Metallurgy & Metallurgical Engineering
Junke Ou, Shugen Wu, Hao Wang
Summary: In this study, uniform Co3O4 nanoparticles were prepared via hydrothermal synthesis without calcination treatment. When used as anode material for lithium ion batteries, they exhibited good electrochemical performance with high reversible capacity. The as-synthesized Co3O4 nanoparticles showed a significant increase in reversible capacity from the initial cycle to the 300th cycle at different current densities, indicating great potential for practical applications in lithium ion batteries.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2021)
Article
Chemistry, Physical
Yuansen Duan, Shaolin Du, Huachao Tao, Xuelin Yang
Summary: Tin has been considered as an ideal anode material for lithium ion batteries due to its high theoretical capacity, but its practical application is limited by poor cycling stability. Different structures, such as amorphous and crystalline, can significantly impact the electrochemical performance of Sn-based electrodes. In this study, it was found that the amorphous-Sn@C electrode exhibited higher capacity, better cycling stability, and rate capability compared to the crystalline-Sn@C electrode, attributing to enhanced strain regulation and defect sites. The results could serve as a reference for the development of high-capacity and long cycle life alloy-based anodes for lithium ion batteries.
Article
Biochemistry & Molecular Biology
Haojie Duan, Hongqiang Xu, Qian Wu, Lin Zhu, Yuting Zhang, Bo Yin, Haiyong He
Summary: A silicon/graphite/amorphous carbon (Si/G/C) composite material has been successfully synthesized through a facile spray-drying and heating treatment method, and it exhibits excellent electrochemical performance in lithium-ion batteries compared to a silicon/amorphous carbon (Si/C) sample. The Si/G/C composite shows higher initial discharge capacity, better cyclic and rate performance, demonstrating that graphite can effectively improve the electrochemical properties of silicon anode materials.
Article
Energy & Fuels
Young-Han Lee, In-Su Hwang, Jeong-Hee Choi, Cheol-Min Park
Summary: The electrochemical Li/Na/K-ion reaction pathways in Ga for high-performance Ga anodes in alkali-ion batteries are thoroughly elucidated using ex situ analytical tools. Ga exhibits a high Li-ion storage reaction, forming Li2Ga, but poor Na- and K-ion storage reactions, forming NaGa4 and K3Ga13, respectively. An amorphous Ga composite (Ga/C) is fabricated, showing high reversible capacity, long-term Li-ion storage stability, and high rate capability. Three-step confinement of amorphous Ga in the composite during cycling is demonstrated as an enhancement mechanism for high-performance Ga/C anodes for LIBs.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Jay Singh, Seulgi Lee, Sungjin Kim, Satendra Pal Singh, Jaekook Kim, Alok Kumar Rai
Summary: One-dimensional porous NiO nano-rods were synthesized using hydrothermal synthesis method, showing excellent electrochemical performance with good rate capability and long cycling stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Yun Seok Choi, Woosung Choi, Won-Sub Yoon, Ji Man Kim
Summary: This article comprehensively investigates the negative fading phenomenon of iron oxide anodes with a highly ordered mesoporous structure. The study reveals that the negative fading originates from an optimization of the electrolyte-derived surface layer, which significantly contributes to the structural and cycle stability of nanostructured electrode materials.
Article
Chemistry, Multidisciplinary
Hyunwoo Kim, Wontae Lee, Woosung Choi, Soyeong Yun, Eunkang Lee, Won-Sub Yoon
Summary: Research has shown that maximizing the reaction of -OH components by using crystal water can increase the extra capacity obtained from abnormal reactions, further optimizing the development of battery technology.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Taewhan Kim, Kyoung Ho Kim, Wontae Lee, Woosung Choi, Hyunyoung Park, Hyunwoo Kim, Jaesang Yoon, Yun Seok Choi, Jungho Lee, Ji Man Kim, Won-Sub Yoon
Summary: Mesoporous structures in transition metal oxides show higher reversible capacity and anomalous cycle behavior than bulk materials, attributed to their weaker Co-O and Co-Co bond strength which lead to more reversible conversion reactions, along with the further formation/decomposition of electrolytederived surface layer causing the negative fading phenomenon.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Mihee Jeong, Wontae Lee, Soyeong Yun, Woosung Choi, Hyunyoung Park, Eunkang Lee, Jaeyoung Kim, Sung Jun Cho, Nam-Hee Lee, Hyun-Joon Shin, Won-Sub Yoon
Summary: Comparative study of NCM523 and NCA reveals that NCM523 exhibits better performance in the high-voltage region, with less anisotropic lattice distortion and wider Li-ion channels, as well as superior cyclability and thermal stability; therefore, the utilization of low-Ni layered cathode materials operated at high voltage is a strategic approach to expand the design factors of advanced LIBs.
ADVANCED ENERGY MATERIALS
(2022)
Review
Electrochemistry
Jaeyoung Kim, Sangbin Park, Sunhyun Hwang, Won-Sub Yoon
Summary: Lithium-ion battery development is a highly active research area, and the galvanostatic intermittent titration technique (GITT) is widely used in battery research. This mini review provides a detailed discussion on the theoretical and practical aspects of GITT analysis, including the derivation of diffusion coefficients equation and insight into methods for improving lithium-ion battery performance.
JOURNAL OF ELECTROCHEMICAL SCIENCE AND TECHNOLOGY
(2022)
Review
Electrochemistry
Hyunwoo Kim, Dong In Kim, Won-Sub Yoon
Summary: Lithium-ion batteries are reliable power supply systems, but higher energy density is needed. Sodium-ion batteries are actively studied as a low-cost alternative. Conversion-based materials are extensively researched for their higher theoretical capacity in both lithium-ion and sodium-ion batteries.
JOURNAL OF ELECTROCHEMICAL SCIENCE AND TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Jihoon Kim, A. Venkatesan, Nhat Anh Nguyen Phan, Yewon Kim, Hanul Kim, Dongmok Whang, Gil-Ho Kim
Summary: The study developed an SBD system using n-type tungsten disulfide (WS2) and demonstrated improved diode characteristics by depositing In and Au on n-type WS2. The SBD showed characteristics close to an ideal diode with improved electrical properties compared to conventional p-n diodes.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Physical
Wontae Lee, Sangyoon Lee, Munhyeok Choi, Ranjith Thangavel, Yongho Lee, Won-Sub Yoon
Summary: This study focuses on the effect of water-washing on Ni-rich layered materials, showing that the process can lead to differences in the surface environment, decreasing rate performances. Furthermore, water-washing makes the surface of the materials more vulnerable to side reactions, facilitating the formation of NiO-like rock-salt phase through surface layer reconstruction.
ENERGY STORAGE MATERIALS
(2022)
Article
Engineering, Environmental
Mincheol Beak, Jangho Park, Sanghyuk Park, Seongdeock Jeong, Jingu Kang, Woosung Choi, Won-Sub Yoon, Kyungjung Kwon
Summary: The regeneration of cathode materials from actual industrial scale LIB leachate and purified leachate is the focus of current lithium-ion battery recycling research. Significant amounts of nonmetal and metal elements were detected in the regenerated NMC. The concept of yield of precipitation (YOP) was introduced to categorize the behavior of elements during co-precipitation in the precursors. This categorization of impurity elements will be beneficial for quality control in the LIB recycling industry.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Soyeong Yun, Shoaib Muhammad, Jinhyuk Choi, Wontae Lee, Junwoo Yu, Hayeon Lee, Yongjae Lee, Won-Sub Yoon
Summary: In this study, Li2Ir0.75Sn0.25O3 material was synthesized and the highly reversible structural changes and cation migration were achieved through biphasic reaction, resulting in improved cycle performance and structural stability.
ACS ENERGY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Soyeong Yun, Junwoo Yu, Wontae Lee, Hayeon Lee, Won-Sub Yoon
Summary: Li- and Mn-rich layered oxides have not been commercialized due to several issues, such as voltage decay, low rate capability, poor capacity retention, and high irreversible capacity. To address these problems, Nb doping in Li1.2Ni0.13Co0.13Mn0.53Nb0.01O2 cathode material is proposed. Nb doping strengthens the TM-O bond, stabilizes the layered structure, improves rate capability, suppresses phase transition, and enhances the structural and electrochemical integrity.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Physical
Eunkang Lee, Wontae Lee, Hyunwoo Kim, Minji Kim, Soyeong Yun, Jaeyoung Kim, Won-Sub Yoon
Summary: Understanding the thermal behaviors of energy storage materials in different charged states is crucial for improving thermal stability. This study investigates the crystallographic changes of Ni-based layered materials at increasing temperatures for three different states-of-charges. The onset temperature of disordered spinel structure formation is mainly affected by the intermediate tetrahedron size, while the completion temperature is determined by the Li contents in the Li layer. A highly charged state leads to rapid reduction of Ni ions and lattice expansion during thermally induced decomposition, increasing the risk of thermal runaway. These findings provide insights into the crystallographic behaviors of Ni-based layered materials and contribute to the design of rechargeable batteries with better thermal stability.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Jaeyoung Kim, Wontae Lee, Jangwhan Seok, Minji Kim, Sangbin Park, Hyunbeom Lee, Young-Jun Kim, Won-Sub Yoon
Summary: All-solid-state lithium batteries with non-flammable solid electrolytes have safety advantages over batteries with flammable liquid electrolytes. However, interfacial issues between cathode materials and solid electrolytes pose challenges for commercialization. This study identifies critical factors for battery performance related to solid interfaces and lattice strains, and suggests that a compact electrode microstructure can alleviate the negative effects of increased lattice strain, leading to improved electrochemical performance.
Article
Chemistry, Physical
Gwan Hyun Choi, N. Clament Sagaya Selvam, Hyunwoo Kim, Young Sang Park, Jiyoon Jung, Myeong Gyun, Hyo Sang Jeon, Albert S. Lee, Won-Sub Yoon, Pil J. Yoo
Summary: The study demonstrates the design of heterointerface-structured catalysts with tunable active sites using an interfacial engineering strategy based on the anionic diffusion-limited Kirkendall effect. A FeCo/FeCoP catalyst with highvalent Fe sites was successfully synthesized through the phosphidation of carbon-encapsulated FeCo nanoparticles. The FeCo/FeCoP catalyst exhibited highly efficient and stable oxygen evolution reaction performance, highlighting the importance of understanding the water oxidation chemistry of heterointerface-structured catalysts for potential energy conversion applications.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Hyunwoo Kim, Chang-Dae Lee, Dong In Kim, Woosung Choi, Dong-Hwa Seo, Won-Sub Yoon
Summary: Molybdenum oxides, such as MoO2 and MoO3, have been extensively studied as anode materials for lithium-ion batteries. This study compares the charge storage behavior of these two oxides and reveals that MoO3 undergoes a conversion reaction, while MoO2 accommodates lithium as metallic lithium. The different metal-oxygen bonding properties of MoO2 and MoO3 are found to be the origin of their different electrochemical properties.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Materials Science, Multidisciplinary
A. Aly, M. Ghali, A. Osman, M. K. El Nimr
Summary: This study reports the discovery of naturally occurring luminescent graphene quantum dots (GQDs) in coconut water for the first time. The GQDs were identified through various measurements and were found to have dual sizes and emit different wavelengths of light. The GQDs were also utilized as an efficient optical sensor for aniline liquid detection.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Zehua Chen, Wencheng Ma, Qinglu Fan, Yanhua Liu, Min Sun, Shuo Wang
Summary: The nanoscale e-VOPO4 materials were successfully prepared by hydrothermal synthesis and calcination, showing high purity and suitable particle size. It exhibited satisfactory electrochemical performance as cathode material for sodium ion batteries, making it a potential candidate for high energy storage systems.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Tao Liu, Yahui Liu, Le Ling, Zhongxi Sheng, Zao Yi, Zigang Zhou, Yongjia Yang, Bin Tang, Qingdong Zeng, Tangyou Sun
Summary: In this paper, a terahertz (THz) micronano device that can switch between bimodal absorption and plasmon-induced transparency (PIT) is proposed. The device consists of layers of graphene, silica, and vanadium dioxide, and has a simple structure, easy tuning, and wide-angle absorption. The device achieves perfect absorption at specific frequencies and is highly sensitive to environmental refractive index. It also has the functions of a three-frequency asynchronous optical switch and slow light effect.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Xiaobo Luo, Songhan Hu, Qiudong Duan, Dacheng Zhou, Jialin Chen, Yugeng Wen, Jianbei Qiu
Summary: The exploration of solar light absorption by a material is important in photonics and optoelectronics. This study reveals the potential of Ba3-xGa2O6:xBi3+ as a promising candidate for various photonic and optoelectronic applications, and demonstrates the use of the material in double-sided laser printing for three-dimensional optical imaging.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Hemin Wang, Yanling Hao, Lele Xiang, Xiaosi Qi, Lei Wang, Junfei Ding, Yunpeng Qu, Jing Xu, Wei Zhong
Summary: This study designed Fe3O4-FeCO3/MWCNTs/RGO MCNCs composites and fabricated large-scale samples using hydrothermal and freeze-drying methods. The microstructural investigation showed that these materials had a mixed-dimensional structure, which improved impedance matching features, polarization, and conduction loss abilities, leading to significantly enhanced electromagnetic absorption properties.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Zhenshan Yu, Hao Chen, Xuequan Chen, Yu-Sheng Lin
Summary: This study presents a silicon dielectric metamaterial (SDM) composed of two outer symmetric semi-circular rings and two inner symmetric split-ring resonators (SRRs). The electromagnetic responses of the SDM device in different modes were studied through numerical simulations and experiments. Increasing the structure height of the SDM device resulted in red-shifted resonances and stronger intensities. This study provides a new design strategy for the development of frequency filtering, polarization switching, and resonance modulation characteristics in THz-wave applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Yiming Qi, Na Zhang, Meng Zong, Yangxianzi Liu, Weixing Chen
Summary: This study prepares dielectric/carbon fiber based nanocomposites wave-absorbing materials using liquid diffusion and high temperature carbonization strategies. By tuning the element type, drying mode, and filling amount, the electromagnetic parameters and absorbing properties can be adjusted. The best synthesized sample shows excellent absorbing performance, making it suitable for a wide range of electromagnetic wave absorption applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Carlos D. Gonzales-Lorenzo, T. K. Gundu Rao, Alberto A. Ccollque-Quispe, Jorge Ayala-Arenas, Monise B. Gomes, Betzabel N. Silva-Carrera, Roseli F. Gennari, Valeria S. Pachas, F. Monzon-Macedo, H. Loro, Jose F. D. Chubaci, Nilo F. Cano, Rene R. Rocca, Shigueo Watanabe
Summary: In this study, CaSiO3 doped with different ppm of Eu was synthesized using the devitrification method. Various physical properties were analyzed, revealing that the intensity and temperature of the high-temperature TL peak increased with higher dopant amounts. Fluorescence measurements indicated the presence of Eu2+ and Eu3+ ions in the samples. EPR spectra confirmed the existence of two defect centers.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Yanning Qu, Xinyang Li, Mei Cui, Renliang Huang, Wanquan Ma, Yunting Wang, Rongxin Su, Wei Qi
Summary: In this study, a new molybdenum disulfide/N,S-doped carbon quantum dots (MoS2/N,S-CQDs) heterojunction with enhanced light absorption and electrons transfer di-functional properties was constructed via a facile one-pot hydrothermal method. The heterojunction showed remarkable efficiencies in degrading methylene blue (MB) and malachite green (MG) in an actual water system under simulated sunlight irradiation. The facile synthetic technique and effective multifunctional properties of the composite have the potential for further research and industrial applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Jiayi Wang, Penggang Ren, Xueyan Zhao, Zhengyan Chen, Yanling Jin, Zengping Zhang
Summary: In this study, a novel homojunction photocatalyst was developed by combining defective g-C3N4 and flaked g-C3N4, which showed excellent degradation performance and cycling stability, and exhibited practicality in several simulation experiments.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Jing Yan, Xiaoxiao Zhao, Weixing Chen, Panbo Liu
Summary: This research presents a self-templated strategy to prepare a spherical superstructure of carbon nanorods through material modification and pyrolysis. The resulting material exhibits a large controllable radius of curvature and shows excellent microwave absorbing properties due to its high specific surface area and mesoporous structure.
MATERIALS RESEARCH BULLETIN
(2024)
Review
Materials Science, Multidisciplinary
Qinglin Zeng, Zepeng Lv, Shaolong Li, Bin Yang, Jilin He, Jianxun Song
Summary: Liquid metal batteries possess stable safety performance, high rate performance, and thermal stability. The electrolyte, an important component of the battery, plays a significant role in achieving these remarkable performance characteristics. This paper reviews the important research progress of liquid metal batteries electrolyte and discusses the influence of different electrolyte types on energy efficiency. It also highlights the limitations and challenges of existing electrolytes and proposes key development directions for liquid metal electrolytes.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Song Wu, Junli Wang, Xuanbing Wang, Di Jiang, Jinlong Wei, Xiaoning Tong, Zhenwei Liu, Qingxiang Kong, Naixuan Zong, Ruidong Xu, Linjing Yang
Summary: In this study, a composite electrode composed of Ti/TiH2/beta-PbO2_Mn3O4@C was fabricated and investigated for zinc electrowinning. The composite electrode exhibited low overpotential, Tafel slope, icorr, and high voltage stability, outperforming most reported Ti-based PbO2 electrode materials. The excellent catalytic activity can be attributed to the low resistance and porous interlayer of TiH2 nanosheets, as well as the addition of Mn3O4@C micro-flakes to the active layer.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
E. Tsoutsoumanos, T. Karakasidis, N. Laskaris, P. G. Konstantinidis, G. S. Polymeris, G. Kitis
Summary: This study investigates the correlation between nanocrystal dimensions and thermoluminescence signal magnitude through simulations conducted in Python. Two mathematical models, OTOR and IMTS, were used to derive theoretical luminescence signals. The obtained results were compared with experimental data and a thorough comparative discussion was conducted.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Vishnu Aggarwal, Sudhanshu Gautam, Aditya Yadav, Rahul Kumar, Bipul Kumar Pradhan, Brajesh S. Yadav, Govind Gupta, Senthil Kumar Muthusamy, Sumeet Walia, Sunil Singh Kushvaha
Summary: Recently, there has been a great demand for highly responsive photodetectors that can detect a wide range of wavelengths. Researchers have successfully fabricated a broadband metal-semiconductor-metal photodetector by integrating sputtered Bi2Se3 with laser molecular beam epitaxy grown GaN film. This photodetector shows high responsivity in both the ultraviolet and near-infrared regions.
MATERIALS RESEARCH BULLETIN
(2024)
