Article
Materials Science, Ceramics
Wenying Fan, Xiangping Jiang, Xiaokun Huang, Xin Nie, Chao Chen, Jiajun Yuan
Summary: BBIT:x(NC) intergrowth bismuth layer-structured piezoelectric ceramics with enhanced properties were synthesized through traditional solid-state reaction. The ceramics exhibited a single intergrowth structure with enhanced electrical properties due to Na/Ce co-doping, and showed good thermal stability after annealing. These findings suggest that BBIT: 0.3(NC) ceramics may be a promising candidate for high-temperature piezoelectric applications.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Gianni Ferrero, Konstantin Astafiev, Erling Ringgaard, Leonardo Soares de Oliveira, Bhaskar Reddy Sudireddy, Astri Bjornetun Haugen, Katarina Ziberna, Barbara Malic, Tadej Rojac
Summary: It is found that using BaTiO3 as seed particles does not promote the formation of the 0.67BiFeO3-0.33BaTiO3 phase and instead leads to an inhomogeneous structure. However, this processing route allows for the tuning of the piezoelectric response of 0.67BiFeO3-0.33BaTiO3.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Yang Li, Marcell Borbely, Andrew Bell
Summary: The study on 0.71Pb(Mg1/3Nb2/3)O-3-0.29PbTiO(3) doped with 2.5% Sm on the A-site shows a significant increase in piezoelectric performance, a reduction in conductivity, and a decrease in oxygen vacancy concentration. The nonlinearity of permittivity with respect to field amplitude increases significantly with Sm doping, with both reversible and irreversible contributions also increasing significantly.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Dongxia Tian, Pan Chen, Xu Yang, Baojin Chu
Summary: The study demonstrates a scaling effect in BaTiO3 and Ba0.83Sr0.17TiO3 ceramics with sub-millimeter thickness, showing reduced dielectric constant, increased coercive field, and decreased piezoelectric response. This effect is possibly due to surface layers with a stabilized ferroelectric phase and higher coercive field.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Roopam Gaur, Satyendra Singh
Summary: This study investigates the effect of Ag+ doping on the properties of K0.5Na0.5NbO3 (KNN) ceramics. It is found that Ag+ substitution changes the microstructure of KNN and improves its energy storage and piezoelectric properties due to the occurrence of double polarization hysteresis loops.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Weipeng Lin, Manwen Yao, Jian Lin, Xi Yao
Summary: Researchers focused on exploring the potential of PbTiO3 (PT) relaxor ferroelectrics for the development of miniaturized high-precision piezoelectric devices. Partial substitution of Pb(Mg1/3Nb2/3)O3 (PMN)-PT with Pb(Ni1/3Nb2/3)O3 (PNN)-PT was found to improve dielectric and piezoelectric properties. However, the factors underlying the performance improvement of the PNN-PMN-PT ternary system remained unclear. To address this, ceramics with different PT content were fabricated and their crystal structure and electrical properties were investigated. The 0.128PNN-0.536PMN-0.336PT composition exhibited optimum performance, indicating its potential for applications in transducers and actuators.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
G. Cardenas-Chirivi, K. Vega-Bustos, H. Rojas-Paez, D. Silvera-Vega, J. Pazos, O. Herrera, M. A. Macias, C. Espejo, W. Lopez-Perez, J. A. Galvis, P. Giraldo-Gallo
Summary: In this study, the coexistence of ferromagnetism and ferroelectricity was observed in Te-doped WSe2, which has been a long-standing challenge for 2-dimensional compounds. These findings have significant implications for the development of multifunctional nanoelectronics and spintronics devices based on van der Waals materials.
NPJ 2D MATERIALS AND APPLICATIONS
(2023)
Article
Chemistry, Physical
Hao Chen, Jie Xing, Jingwen Xi, Tao Pu, Hong Liu, Jianguo Zhu
Summary: A high-performance PZT-based piezoelectric ceramic with Ta2O5 additive was prepared via low-temperature sintering, resulting in low domain wall movement activation energy and high piezoelectric response. The study revealed that the higher the tetragonal phase content, the smaller the domain structure, leading to improved piezoelectric properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Chemistry, Physical
Xuchen Nie, Xiaoyue Wu, Yang Wang, Siyuan Ban, Zhihao Lei, Jiabao Yi, Ying Liu, Yanpeng Liu
Summary: Surface acoustic wave (SAW)-matter interaction in two-dimensional (2D) materials can induce and manipulate novel phenomena and functionalities. Experimental reports have been made on various acoustic-induced effects, while some proposed phenomena still await experimental verification. This minireview provides an overview of recent breakthroughs in SAW-induced phenomena and discusses the opportunities and challenges in experiments.
NANOSCALE HORIZONS
(2023)
Article
Chemistry, Physical
Xilong Xu, Ting Zhang, Ying Dai, Baibiao Huang, Yandong Ma
Summary: In this study, a novel mechanism for electro-mechanical coupling is proposed, which enables reversible and nonvolatile electric field switching of the dimensions of a 2D lattice through the mediated strength of interlayer interactions in ferroelectric bilayer systems. The validity of this mechanism is demonstrated in a series of real bilayer materials through first-principles calculations. The interface differences due to polarization play a crucial role in realizing such nonvolatile electro-mechanical coupling, and the underlying physical origin is discussed. These explored phenomena and insights offer a novel avenue for the highly desired nonvolatile electric field control of mechanical strain.
NANOSCALE HORIZONS
(2023)
Article
Chemistry, Physical
Yuying Zhang, Yanliang Wei, Anqi Zhang, Ruiqing Chu, Guorong Li, Chao Zhang, Zhijun Xu
Summary: This study systematically investigated the influence of Yb doping on the properties of SrBi2Nb2O9 ceramics. It was found that Yb doping with a concentration of x = 0.004 resulted in low dielectric loss, high remnant polarization, large piezoelectric responses, and excellent upconversion photoluminescence. Density functional theory calculations revealed the physical origin of electrical conductivity and upconversion photoluminescence, and the mechanisms for improving these properties were discussed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Electrical & Electronic
Kohei Kikuchi, Mudassir Hussain, Tomoaki Mashimo
Summary: This paper presents a submillimeter-scale rotary piezoelectric ultrasonic motor with the smallest stator reported to date. The fabrication processes and physical phenomena of these micro-robots have been a challenge for their development. Through micromachining technologies and a micromanipulator, tiny components and adhesives of sub-milligram order can be controlled and manufactured, respectively. Various experiments were conducted to understand the submillimeter-scale physical behaviors, such as the admittance and quality factor, and submillimeter-scale ultrasonic motors were successfully built and characterized.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Materials Science, Ceramics
Natalia F. C. Vargas, Mahmoud S. Alkathy, Jose A. Eiras, Valmor Roberto Mastelaro, Manuel H. Lente
Summary: The sintering temperature was found to influence the energy band gap of PLT-Ni ceramics, with the substitution of Ti4+ by Ni2+ cations effectively decreasing the intrinsic band gap and increasing the spontaneous polarization. The increase in sintering temperature also led to a red-shift in the absorption edge of PLT-Ni, attributed to the continuous increase in oxygen vacancies (VO2-) amount.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Valentin V. Kochervinskii, Margaret A. Gradova, Oleg V. Gradov, Andrey I. Sergeev, Anton V. Lobanov, Evgeniya L. Buryanskaya, Tatiana S. Ilina, Dmitry A. Kiselev, Inna A. Malyshkina, Gayane A. Kirakosyan
Summary: Polymer films doped with different porphyrins show variations in absorption and fluorescence spectra due to differences in the structuring and composition of the rotational isomers in the polymer chains. Crystallization of tetraphenylporphyrin (TPP) doped films involves mixtures of alpha- and gamma-phases with TGTG(-) and T(3)GT(3)G(-) conformations, respectively. The introduction of TPP during film formation leads to increased conductivity and the presence of hysteresis phenomena in local piezoelectric measurements.
Article
Chemistry, Physical
Sowon Kim, Heechul Lee
Summary: A multilayer piezoelectric material was developed using piezoelectric materials with low-temperature sintering capabilities and high piezoelectric coefficients to create a functionally superior piezoelectric speaker with large-displacement deformation. Optimization of the component materials involved the use of a soft relaxor and Li2CO3, resulting in superior properties for the multilayer piezoelectric material. Finite element analysis and simulations led to the fabrication of an actual piezoelectric speaker with optimal frequency-response characteristics, achieving a sound pressure level of approximately 75 dB and total harmonic distortion below 15% in the audible frequency range.
Article
Nanoscience & Nanotechnology
Meilin Tu, Haipeng Lu, Songwen Luo, Hao Peng, Shangdong Li, Yizhen Ke, Shuoguo Yuan, Wen Huang, Wenjing Jie, Jianhua Hao
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Multidisciplinary
Ran Ding, Chun-Ki Liu, Zehan Wu, Feng Guo, Sin-Yi Pang, Lok Wing Wong, Weng Fu Io, Shuoguo Yuan, Man-Chung Wong, Michal Bartlomiej Jedrzejczyk, Jiong Zhao, Feng Yan, Jianhua Hao
Article
Physics, Applied
Huiying Du, Meilin Tu, Songwen Luo, Yuhuan Liu, Xinyue Qiu, Haipeng Lu, Shangdong Li, Shuoguo Yuan, Wen Huang, Wenjing Jie, Jianhua Hao
APPLIED PHYSICS LETTERS
(2020)
Review
Physics, Applied
Yuan Shuoguo, Pang Sin-Yi, Hao Jianhua
APPLIED PHYSICS REVIEWS
(2020)
Article
Electrochemistry
Yuhang Li, Fang Wang, Boyuan Huang, Can Huang, Dexuan Pei, Zixian Liu, Shuoguo Yuan, Shuen Hou, Guozhong Cao, Hongyun Jin
Summary: This study developed composite polymer electrolytes based on polycaprolactone to enhance the charging/discharging performances of all-solid-state lithium batteries (ASSLBs). The addition of ceramic powder suppressed the crystallization of polycaprolactone and improved the Li-ion transport behavior, leading to excellent cycling performance of ASSLBs.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Can Huang, Zhuojie Li, Shanshan Duan, Shuhong Xie, Shuoguo Yuan, Shuen Hou, Guozhong Cao, Hongyun Jin
Summary: Li1.4Al0.4Ti1.6(PO4)3 (LATP), a type of sodium super-ionic conductor (NASICON)-type electrolyte, is considered a promising alternative to liquid electrolytes due to its high ionic conductivity and low cost. However, the poor interfacial compatibility of LATP with lithium batteries leads to failure and limits its further development. In this study, a MoS2 coating layer is used as an artificial solid electrolyte interphase (ASEI) to modify the surface of LATP, effectively inhibiting its decomposition and forming a conversion layer during cycling. The MoS2 interfacial modification reduces polarization and improves the cycling performance of Li/MCLATP/LFP cells. This work provides a promising strategy for constructing interfaces between Li metal and solid-state electrolytes using MoS2 as an ASEI layer.
JOURNAL OF POWER SOURCES
(2022)
Article
Materials Science, Multidisciplinary
Shuoguo Yuan, Qian Xia, Can Huang, Hongyun Jin
Summary: Solid-state electrolytes (SSEs) are considered as one of the most attractive alternatives to liquid electrolytes in lithium-ion batteries, but their poor interface compatibility with lithium metal has hindered their development. Recent studies have shown that two-dimensional materials can improve the interface stability of SSEs with lithium metal, leading to promising advancements in energy applications.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Physical
Haibo Xu, Gongxun Bai, Shahzad Afzal, Kun He, Zhen Xiao, Shuoguo Yuan, Zhanling Lu, Qiangqiang Zhu, Shiqing Xu
Summary: Solar-driven pollutants degradation is an important green wastewater treatment method, but its effectiveness is limited by intermittent solar flux. In this study, piezoelectric BTO nanosheets with diverse physical properties were prepared to convert solar energy, mechanical energy, and temperature variation energy into electrical and chemical energy, enabling round-the-clock wastewater treatment. The nanosheets exhibited a high degradation rate of 153.4 x 10-3 min 1 and could degrade various organic pollutants. Furthermore, porous foam catalysts based on BTO-polydimethylsiloxane (PDMS) composite were fabricated to prevent secondary contamination. These findings suggest that BTO nanosheets with photoelectric, piezoelectric, and pyroelectric catalysis could be a potential approach for continuous wastewater degradation by harnessing solar energy, ambient mechanical energy, and cyclic thermal energy.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Can Huang, Fang Wang, Shuo Huang, Jianhe Hong, Shuoguo Yuan, Shuen Hou, Hongyun Jin
Summary: NASICON-type Li1+xAlxTi2-x(PO4)(3) (LATP) is a representative solid electrolyte with high ionic conductivity and other superior properties. However, its development is hindered by the side reaction with Li metal. The degradation of LATP leads to cracks, causing poor Li+ transport kinetics and cell failure in solid-state batteries.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Multidisciplinary Sciences
Weng Fu Io, Sin -Yi Pang, Lok Wing Wong, Yuqian Zhao, Ran Ding, Jianfeng Mao, Yifei Zhao, Feng Guo, Shuoguo Yuan, Jiong Zhao, Jiabao Yi, Jianhua Hao
Summary: Robust out-of-plane ferroelectricity is observed in 2D vdW CuCrP2S6, providing important insights into its nature and potential for advanced device applications.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Shuoguo Yuan, Yiming Zhang, Minzhi Dai, Yancong Chen, Haiyan Yu, Zengsheng Ma, Weng Fu Io, Xin Luo, Pengfei Hou, Jianhua Hao
Summary: Two-dimensional layered piezoelectric materials have attracted significant interest, but their tunability is often limited. This study demonstrates the manipulation of the out-of-plane piezoelectric properties of 2D van der Waals In2Se3 through interface engineering, resulting in the highest variation value.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Li Qin, Shuoguo Yuan, Zequn Chen, Xue Bai, Jianmei Xu, Ling Zhao, Wei Zhou, Qing Wang, Jingjing Chang, Jian Sun
Summary: This work presents the successful preparation of orthorhombic SnO films using ethylene glycol as a reductant and the improvement of their optical and electrical properties through K doping. The K-doped SnO films demonstrate ultra-broadband photosensing capability in a phototransistor, including infrared photosensing which is reported for the first time. This work not only provides a simple method to fabricate high-performance and low-cost p-type SnO films and phototransistors, but also suggests a new way to improve the p-type characteristics of other oxide semiconductors and devices.
Article
Materials Science, Multidisciplinary
Yi Huang, Jin Tan, Gang Gao, Jianmei Xu, Ling Zhao, Wei Zhou, Qing Wang, Shuoguo Yuan, Jian Sun
Summary: Ultraviolet photodetectors are attracting attention worldwide due to their applications in various fields. This study successfully fabricated ultrathin, ultra-high-transparency, and smooth CuI films using the copper film iodination method. The CuI films showed excellent optoelectronic properties and were used to construct photodetectors with promising applications in transparent and flexible electronic devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Songwen Luo, Kanghong Liao, Peixian Lei, Ting Jiang, Siyi Chen, Qin Xie, Wenbo Luo, Wen Huang, Shuoguo Yuan, Wenjing Jie, Jianhua Hao
Summary: The study presents the fabrication of two-terminal memristors using 2D WSe2 nanosheets, showing good stability and reliability. The devices exhibit typical resistive switching behaviors and demonstrate synaptic functions mimicking biological synapses, including short- and long-term plasticity.
Article
Nanoscience & Nanotechnology
Shuoguo Yuan, Weng Fu Io, Jianfeng Mao, Yancong Chen, Xin Luo, Jianhua Hao
ACS APPLIED NANO MATERIALS
(2020)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)