Article
Chemistry, Physical
Fangqi Tang, Tingting Jiang, Yu Tan, Xinyi Xu, Yingke Zhou
Summary: Silicon/graphene composites have attracted increasing attention as promising negative electrode materials for lithium-ion batteries, showing excellent electrochemical performance and cycle stability. Silicon offers high specific charge capacity, while graphene provides good electrical conductivity and space for silicon expansion, resulting in stable electrode material.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Pu Cheng, Dianliang Cao, Kai Sun, Yiding Li, Yujun Fu, Yonggang Zhao, Dequan Liu, Deyan He
Summary: By developing a new strategy to construct V2O5 yolk-shell microspheres/graphene nanosheets on a commercial poly-propylene separator as a vice-electrode, the lithium-sulfur batteries show a larger voltage window and significantly improved electrochemical performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Mengmeng Yang, Liwei Jin, Mingyi He, Zao Yi, Tao Duan, Weitang Yao
Summary: Low silicon oxide shows promise as an anode material for LIBs and KIBs due to its high theoretical capacity, but faces challenges such as volume effects and poor intrinsic electronic conductivity. By synthesizing SiOx@C anodes, the cyclic stability and capacity of low silicon oxide have been improved, making it a promising option for future applications.
APPLIED SURFACE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Yanjun Xu, Shengzhao Zhang, Taibo Liang, Zhujun Yao, Xiuli Wang, Changdong Gu, Xinhui Xia, Jiangping Tu
Summary: Researchers have designed a solid-state electrolyte with flexibility and robustness to ensure stable lithium cycling and enhanced ionic conductivity. The electrolyte exhibits outstanding cycling performance in solid-state LiFePO4//Li batteries, with a Young's modulus of up to 1030 MPa, and can work well in harsh environments.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Feng Xiao, Ying Meng, Zhiping Lin, Yu Lei, Xianghong Chen, Jiakui Zhang, Haiying Lu, Yiping Tong, Guocong Liu, Jiantie Xu
Summary: In this study, a method to synthesize holey graphene with boron doping has been reported. The resulting boron-doped holey graphene as a cathode material in rechargeable lithium oxygen batteries exhibited excellent electrochemical performance with high capacity and long cycling stability.
Article
Chemistry, Physical
Qiaoling Kang, Yezhi Qin, Jiangwei Shi, Boru Xiong, Wenying Tang, Feng Gao, Qingyi Lu
Summary: A hollow bowl-like a-Fe2O3 nanostructure with excellent lithium storage performance is controllably synthesized through a hydrothermal technique. The structure offers advantages of hollow architecture, facilitating lithium ion and electron diffusion, and shows superior mechanical strength compared to other solid structures.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Xuli Ding, Hongda Zhao, Daowei Liang, Pengfei He
Summary: A novel strategy for preparing a ternary SiO@Pc@Ge composite has been developed, showing superior electrochemical performance and excellent cycling stability. XPS and CV investigations reveal the phase evolution and Li storage mechanism during charge-discharge processes, with enhanced Li-ion kinetics in the optimized samples.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
Guangxiang Zhang, Yongming Zhu, Shizhong Lv, Zhen Wang, Peng Gao
Summary: The electrochemical performance of LiNiO2 is significantly improved by preoxidation of the precursor with potassium peroxydisulfate in an alkaline medium. The optimized oxidation time is 30 minutes, resulting in denser and more ordered surface structure of LiNiO2 particles. The initial discharge capacity and capacity retention rate of N30 LiNiO2 are greatly enhanced compared to the original LiNiO2.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Yuan Zhang, Jiahao Xu, Shaoxiong Fu, Yuhan Bian, Yaping Wang, Li Wang, Guangchuan Liang
Summary: A series of Li2SiO3-coated LiNi0.5Mn1.5O4 materials were prepared to alleviate rapid capacity decay. The coating thickness was controlled by adjusting the amount of TEOS and lithium acetate. The material with an appropriate thickness exhibited improved structural and electrochemical properties, including larger primary particle size and reduced secondary particle agglomeration, enhanced Li+ ion diffusion kinetics, suppressed side reactions and CEI growth, and reduced electrode corrosion and transition metal ion dissolution through interaction with HF.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Zhaolin Li, Hailei Zhao, Xin Tao, Yaozong Yang, Jie Wang, Zhao Yang
Summary: In this study, a graphene-modified lithium silicate (LS) nanodots decorated SiOx-C material was prepared using a sol-gel approach and subsequent heat treatment. The material exhibited fast Li-ion and electron transport, enhancing the electrode reaction kinetics of SiOx. The highly-conductive network of graphene also mitigated the structural stress of SiOx, resulting in excellent structural durability. The electrode showed a reversible capacity of 400 mAh g-1 at 0.5 A g-1 for 200 cycles without obvious capacity degradation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Acoustics
Sunghyun Jie, Joonhee Kang, Seunghun Baek, Byeongyong Lee
Summary: This study investigates the influence of ultrasound on lithium-ion batteries (LIBs) and finds that ultrasound can improve charge transfer, enhance cycling stability and charging rate, and facilitate the formation of inorganic-rich solid electrolyte interphase (SEI) layer. This novel combination of ultrasound and LIBs presents a promising pathway for achieving high-performance batteries.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yu Cao, Hong Wu, Gang Li, Cheng Liu, Li Cao, Yiming Zhang, Wei Bao, Huili Wang, Yuan Yao, Shuo Liu, Fusheng Pan, Zhongyi Jiang, Jie Sun
Summary: The authors successfully fabricated an ion selective TpPa-SO3Li film on a commercial separator, with aligned nanochannels and continuous negatively charged sites to facilitate lithium ion conduction and suppress polysulfide diffusion. When using this novel functional layer, Li-S batteries exhibited high initial capacity and retention rate.
Article
Materials Science, Ceramics
Ran Wei, Wenqing Xie, Panpan Li, Siyuan Fu, Xiaoqing Liu, Xunsi Wang, Shiqing Xu, Junjie Zhang
Summary: This study improves the cycle performance and capacity performance of tin-based glass anodes by optimizing the structure and adding F- ions, providing a new direction for the use of tin-based anodes in commercial lithium-ion batteries.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Electrochemistry
Zhaolin Li, Xin Tao, Yaozong Yang, Nana Yao, Zhao Yang, Dawei Luo, Jie Wang, Hailei Zhao
Summary: By using surface engineering, a graphene-coated microsized SiOx material was successfully achieved, which improves the structural integrity and cyclic performance of the electrode.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Zi-Liang Chen, Yi-Jing Gu, Gui-Yang Luo, Yong-Lin Huo, Fu-Zhong Wu
Summary: The study investigated the simultaneous synthesis of LiFePO4/C and sulfur-modified reduced graphene oxide (SG) through a one-step hydrothermal method. It was found that SG significantly improved the electrochemical performance of the samples, with sample S2 showing the best specific discharge capacity and stability. The results indicate that wrapping LiFePO4/C with SG contributes to enhancing its electrochemical performance.
Article
Nanoscience & Nanotechnology
Mingqiang Ning, Qikui Man, Guoguo Tan, Zhenkuang Lei, JingBo Li, Run-Wei Li
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Physical
Zhengjing Zhao, Yi Liu, Zhinong Yu, Chen Ling, Jingbo Li, Yongjie Zhao, Haibo Jin
ACS APPLIED ENERGY MATERIALS
(2020)
Article
Chemistry, Physical
Chen Ling, Qianchen Wang, Xiaoqian Wang, Zhengjing Zhao, Zongguo Wang, Jingbo Li, Yongjie Zhao, Haibo Jin
Summary: Hole doping changes the electronic structure of VO2, leading to the dedimerization of the Mott-Peierls related states and the formation of M-2-VO2. This finding provides important insights for the development of Mott transition field-effect transistors.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Nanoscience & Nanotechnology
Qianchen Wang, Hongcai Gao, Jingbo Li, Gui-Bin Liu, Haibo Jin
Summary: The study compares the extraction/insertion behavior of sodium ions in two isostructural compounds and finds that the voltage of the V5+/V4+ redox couple in partially substituted Na3V2(PO4)3 is lower due to excessive diffusion activation energy.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Qingfeng Chang, Dan Wang, Zhengjing Zhao, Chen Ling, Chengzhi Wang, Haibo Jin, Jingbo Li
Summary: Ultrafine M-phase VO2 nanocrystals with good crystallinity are prepared by an oxygen-controlled hydrothermal method. The size-controllable nanoparticles exhibit excellent thermochromic performance, especially in flexible films.
ACS APPLIED NANO MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Mingqiang Ning, Zhenkuang Lei, Guoguo Tan, Qikui Man, JingBo Li, Run-Wei Li
Summary: Tuning the morphology at nanoscale and assembling nanoarchitecture construction are essential to enhance the electromagnetic wave attenuation performance. In this study, dumbbell-like yolk-shell nanostructures of Fe3O4@N-doped carbon@2H/1T-MoS2 were fabricated to achieve optimized impedance characteristics and significantly enhanced microwave absorbing ability.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Chengzhi Wang, Chen Sun, Zheng Sun, Boyu Wang, Tinglu Song, Yongjie Zhao, Jingbo Li, Haibo Jin
Summary: The grain boundary sealing (GBS) design of the solid electrolyte Na3Zr2Si2PO12 (GBS-NZSP) is proposed to improve the compatibility between the alkaline metal electrode and solid electrolyte in solid-state metal batteries. The GBS-NZSP design enhances interfacial contact and enables stable Na plating/stripping cycles. The GBS-NZSP shows impressive interfacial resistance and cycling stability, attributing to enhanced ionic conductivity and reduced electron transfer at the grain boundary.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Physics, Applied
Xiaoqian Wang, Haibo Jin, Boyu Wang, Chen Ling, Junlin Yang, Donglai Li, Jingbo Li
Summary: In this study, a smart radiator device (SRD) with low solar absorption and large infrared emittance modulation was fabricated by depositing Ag/Al2O3/VO2 triple-layer film on a Si substrate through magnetron sputtering. By optimizing the thickness of the VO2 layer, a fantastic SRD device was obtained, demonstrating low alpha(s), high Delta epsilon, and intense high-temperature infrared emittance. The triple-layer film device has great potential for applications in spacecraft thermal control systems.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Shanshan Deng, Qingfeng Chang, Donglai Li, Boyu Wang, Haibo Jin, Jingbo Li
Summary: VO2 is a potential material for smart energy-saving windows, but its high transition temperature and poor performance at room temperature limit its application. In this study, a W-VO2/Cs0.32WO3 composite flexible film with a low transition temperature and enhanced near-infrared shielding performance was successfully fabricated. Model-house testing further confirmed the excellent performance of the film under ambient conditions, which is attributed to the synergistic effects between W-VO2 and Cs0.32WO3.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Engineering, Environmental
Qianchen Wang, Xiangyu Ding, Jingbo Li, Haibo Jin, Hongcai Gao
Summary: Developed a high ionic conductivity and low activation energy LAGP ceramic solid electrolyte, modified its interface properties to stabilize the cycling life of lithium symmetric cells, and achieved superior electrochemical performance for solid-state lithium batteries with a LiFePO4 cathode.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Qianyi Li, Shanshan Deng, Donglai Li, Junlin Yang, Haibo Jin, Jingbo Li
Summary: In this study, Ti-doped CsXWO3 (Ti-CsxWO3) nanopowders were synthesized through a solvothermal reaction and post-annealing to improve the optical properties of CsxWO3. The 1.71 at. % Ti dopants significantly enhanced the visible transmittance and near-infrared shielding efficiency of CsxWO3. The Tlum and Psi NIR of the 1.71 at. % Ti-CsxWO3 polymer film were 63.87% and 76.90% respectively, which were 51.88% and 65.00% higher than those of the CsxWO3 film. Ti doping induced the broadening of the band gap and smaller size of the nanoparticles, leading to the improvement of Tlum, while the increased free electron concentration and energy levels of impurities resulted in the enhanced Psi NIR. The incorporation of Ti elements makes CsxWO3 a promising material for energy-saving applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Fangyuan Xing, Chengzhi Wang, Shiqiao Liu, Shaohua Jin, Haibo Jin, Jingbo Li
Summary: The Z-scheme heterojunction is promising in photocatalysis due to its efficient carrier separation and strong photoredox properties. However, regulating charge separation at the nanometric interface remains a challenge. In this study, we used g-C3N4 and MoS2 as models and designed the Mo-N chemical bond to connect the CB of MoS2 and VB of g-C3N4. The Mo-N bond acts as an atomic-level interfacial bridge, facilitating charge carrier migration between g-C3N4 and MoS2. Experiments confirmed that the Mo-N bond and internal electric field greatly enhance photogenerated carrier separation. The optimized photocatalyst exhibits a hydrogen evolution rate 19.6 times higher than pristine bulk C3N4. This study demonstrates the importance of atomic-level interfacial chemical bond design in heterojunctions and provides a new approach for efficient catalytic heterojunction design.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Shiqiao Liu, Debao Fang, Fangyuan Xing, Haibo Jin, Jingbo Li
Summary: Electromagnetic pollution is a serious concern and efficient electromagnetic wave absorbers are desired for protection. Recent studies have shown that 1T/2H hybrid molybdenum disulfide nanosheets exhibit excellent microwave absorption performance. In this study, 1T/2H MoS2 nanosheets with different 1T contents were successfully synthesized using a simple hydrothermal process. These nanosheets demonstrated outstanding microwave absorption performance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Inorganic & Nuclear
Fangyuan Xing, Lin Wang, Yu Zhou, Shaohua Jin, Haibo Jin, Jingbo Li
Summary: The band structure of a heterojunction greatly affects the efficiency of photocharge separation. Designing heterojunctions with appropriate band structures is crucial for photocatalytic applications. In this study, we demonstrate that the ferroelectric polarization in a Bi5Ti3FeO15/BiOCl heterostructure can change the direction of photocharge flow, overcoming the energy barrier limitations of a type-I heterojunction. The results show that the polarized BTF/BOC films exhibit a photocurrent density three times larger than the unpolarized films, which is attributed to the large-area and semi-coherent interface of the BTF/BOC heterojunction.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Review
Materials Science, Multidisciplinary
Qianchen Wang, Jingbo Li, Haibo Jin, Sen Xin, Hongcai Gao
Summary: This paper reviews the recent progress in the application of Prussian blue cathode materials for rechargeable batteries, including charge-storage mechanisms, factors influencing electrochemical performances, and possible approaches to overcome their intrinsic limitations.
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)
