Article
Chemistry, Physical
Xiaoqing Mao, Pei Kang Shen
Summary: The NiMoSx heterostructure nanorods synthesized by interface engineering exhibit excellent catalytic activity and durability for oxygen evolution, making them promising anode materials for water electrolysis.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Hyeri Kim, Kyeongseok Min, Chaewon Lim, Sang Eun Shim, Dongwook Lim, Sung-Hyeon Baeck
Summary: A strongly coupled Cu3P/FeP heterostructure with P-doped carbon derived from MIL-101 was synthesized, displaying outstanding electrocatalytic activity towards the oxygen evolution reaction. This work provides a new strategy for the design and preparation of transition-metal-based heterostructures and facilitates the development of high-performance energy-related materials.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Weiqi Chen, Xin Yan, Zhiliang Liu, Xiangchao Zhang, Chunfang Du
Summary: In this study, a heterogeneous structured electrode based on FeAlCrMoV high-entropy alloy was synthesized for hydrogen and oxygen evolution reactions in alkaline media. It exhibited excellent electrocatalytic performance with low overpotential. This work provides a new strategy for heterogeneous structure construction and overall water splitting based on high-entropy alloys.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Composites
Zhipeng Wang, Liang Chen, Shoudong Xu, Ding Zhang, Xianxian Zhou, Xu Wu, Xianmei Xie, Xiangyun Qiu
Summary: In this study, an interface engineering strategy was utilized to couple CoV-LDHs with FeOOH, resulting in the hybrid catalyst CoV-LDHs@FeOOH/NF with excellent OER activity, as evidenced by its low overpotential and Tafel slope, along with superior catalytic durability.
COMPOSITES COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Weiwei Bao, Yan Li, Junjun Zhang, Taotao Ai, Chunming Yang, Liangliang Feng
Summary: In this study, a heterostructure oxygen evolution reaction (OER) catalyst was fabricated by combining MoS2 nanosheets with NiCo2O4 hollow spheres on a titanium mesh. Due to the heterogeneous nanointerface between NiCo2O4 and MoS2, this electrocatalyst exhibited excellent OER activity in a basic environment with overpotentials of 313 and 380 mV achieving 10 and 100 mA cm(-2), respectively. The outstanding catalytic performance can be attributed to the hollow nanostructure and interfacial engineering strategy that enhance intrinsic activity and provide faster charge transfer. Therefore, this work provides a feasible path for the development of highly efficient catalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Environmental
Man Lin, Mingzheng Gu, Xueya Deng, Qiang Xie, Xiaojun Zhang
Summary: In this study, a reliable heterogeneous structure strategy was used to modulate the electronic structure of the electrocatalyst, resulting in an efficient and stable Ni3Se2/Ni3S2/NF catalyst for the oxygen evolution reaction (OER). The catalyst exhibited excellent OER performance with low overpotentials of 251 and 312 mV at 50 and 100 mA cm-2, respectively. The interface of the Ni3Se2/Ni3S2/NF heterostructure triggered abundant catalytically active sites and regulated the electronic structure of the Ni central active site, leading to fast charge-transfer capacity and superior electrochemical performance. This work provides an effective interface regulation strategy for developing applications of other advanced heterostructures.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Jaeseo Lee, Kyeongseok Min, Yujin Son, Dasol Ko, Sang Eun Shim, Sung-Hyeon Baeck
Summary: A composite material, CoFe-LDH/Vo-Co3O4@C, has been developed with efficient surface modulation and abundant structural defect sites, which exhibits remarkable activity and long-term stability for the oxygen evolution reaction. The material shows a low overpotential and small Tafel slope, outperforming traditional RuO2 materials. Moreover, it demonstrates excellent electrocatalytic durability for over 100 hours in alkaline solution.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Physical
He Xiao, Rong Zhang, Man Zhao, Xuemin Yang, Yanying Jing, Li Zhang, Haishun Wu, Jianfeng Jia
Summary: Black phosphorus (BP) is coupled with carbon nanotubes (CNTs) to construct a metal-free BP/CNT (2D/1D) hetero-interface, which effectively improves the activity and stability of BP for oxygen evolution reaction (OER). The optimization of interfacial electronic structure and electron transfer process in this heterostructure lowers the activation energy of OER. The best BP/CNT sample exhibits a lower overpotential than RuO2. This work inspires the design of BP-based heterostructures for OER and reveals the interfacial promotion effect.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Chemistry, Multidisciplinary
Zhen Zhang, Peizhi Liu, Yanhui Song, Ying Hou, Bingshe Xu, Ting Liao, Haixia Zhang, Junjie Guo, Ziqi Sun
Summary: This review summarizes the recent progress of 2D superlattice materials in electrocatalysis applications, focusing on the rational design and fabrication of 2D superlattices, as well as their specific applications in electrocatalysis. The challenges and strategies for the future design of 2D superlattice materials are also outlined.
Article
Chemistry, Physical
Jiang-Yan Xue, Fei-Long Li, Bingbing Chen, Hongbo Geng, Wei Zhang, Wan-Ying Xu, Hongwei Gu, Pierre Braunstein, Jian-Ping Lang
Summary: This study presents an interface engineering strategy to fabricate heterostructures of MoSe2/NiSe with different phases. The mixed MoSe2/NiSe heterostructures show significantly enhanced hydrogen evolution reaction (HER) activity due to the strong electronic synergistic interaction between the different interfaces. Density functional theory calculations rationalize the higher activity of the three-phase combination.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Jinli Chen, Guangfu Qian, Bingxian Chu, Zexing Jiang, Kexin Tan, Lin Luo, Bin Li, Shibin Yin
Summary: In this study, Sn and Co elements are introduced into Pt to form a PtCo-PtSn/C heterostructure for enhancing the oxygen reduction reaction (ORR). The results show that PtCo-PtSn/C exhibits remarkable ORR activity, high stability, and high mass activity in HClO4 solution.
Article
Nanoscience & Nanotechnology
Weimo Li, Lusi Zhao, Ce Wang, Xiaofeng Lu, Wei Chen
Summary: The study introduces a simple method to construct CeO2-CoO nanofibers as efficient OER electrocatalysts, exhibiting excellent catalytic performance and long-term stability. The unique interfacial architecture between CeO2 and CoO contributes to the outstanding OER properties of the nanofibers.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Xin Ding, Run Jiang, Jialin Wu, Minghui Xing, Zelong Qiao, Xiaofei Zeng, Shitao Wang, Dapeng Cao
Summary: This study successfully synthesized the heterostructure of nickel nitride and ceria on nickel foam, showing excellent hydrogen evolution and oxygen evolution performance. Ceria plays different roles in the hydrogen evolution and oxygen evolution processes. The study reveals the different catalytic mechanisms of ceria in boosting the hydrogen evolution and oxygen evolution activities of nickel nitride, providing useful guidance for designing high-performance bifunctional catalysts.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Jingwen Ma, Tianai Zhang, Fusheng Yin, Jun Wang, Zhijun Zhang, Chunwen Sun
Summary: Interface engineering improves the performance of electrochemical catalysts for hydrogen evolution reaction. Mo2C/MoP-NPC heterostructure deposited on co-doped carbon substrate is fabricated, with optimized electronic structure achieved by adjusting phytic acid and aniline ratio. The Mo2C/MoP interface has an electron interaction, optimizing the hydrogen adsorption free energy and enhancing the reaction performance. Mo2C/MoP-NPC exhibits low overpotentials and superior stability, making it a promising candidate for green energy development.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Xiujuan Wu, Hongzhen Liu, Fusheng Li, Liangjie Lu, Weijia Li, Lu Feng, Licheng Sun
Summary: Through comparing the properties of heteroelement-doped catalysts, some regular results can be found: (1) The introduction of P/S/Se can optimize the redox behaviors of Ni species, which is conducive to regulating adsorption energy of intermediates and the formation of high-valent active sites; (2) The specific area of catalysts was expanded after heteroelements doping, ensuring a more favorable structure for heterogeneous catalysis; (3) All P/S/Se-doped catalysts showed better activities when compared to the original NiFe LDHs in alkaline solutions, and the catalysts doped with S showed the best performance (Se < P < S).
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Metallurgy & Metallurgical Engineering
Zihui Guo, Xingyuan Mei, Yu Yan, Yanjing Su
Summary: The novel metastable austenitic stainless steel, 13Cr12Mn, shows excellent mechanical properties and resistance to hydrogen embrittlement, as well as good corrosion resistance in alkaline solutions.
STEEL RESEARCH INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Guozheng Li, Tong Sun, Hua-Jie Niu, Yu Yan, Tong Liu, Sisi Jiang, Qinglin Yang, Wei Zhou, Lin Guo
Summary: Researchers have successfully synthesized a Ru@1T-MoS2-MXene composite material in which Ru nanograins are uniformly grown on 1T-MoS2-decorated Ti3C2Tx MXene sheets. The material exhibits high mass activity and a small Ru dissolution rate. Electrochemical tests and DFT calculations reveal the role of triple interface optimization in improving activity and stability.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Coatings & Films
Yiqi Zhou, Rui Liu, Heng Liu, Yu Yan, Li Zhang, Wuxi Zhou, Wei Yu, Chaofang Dong
Summary: The wear performance of plasma transferred arc (PTA) welding hard-facing materials reinforced by cast WC/W2C and coarse grain WC with different shapes is investigated. The results show that the coating with coarse grain WC-Ni exhibits the best wear resistance under high applied load, and spherical reinforced particles have higher wear performance compared to angular shape. The hardness of the reinforced particles plays a more significant role in determining wear resistance. The formation of precipitates between the carbides and matrix improves the bonding strength and prevents the cast WC/W2C from being pulled out during wear.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Yinchao Wu, Zhongwei Wang, Jiaolong Chen, Yanlong Ma, Yu Yan, Lijie Qiao
Summary: This study investigated the effect of frictional frequency on the subsurface evolution of 316L stainless steel in tribocorrosion and its influence on the synergistic effect between corrosion and wear. The results indicated that the frictional frequency showed a non-monotonic influence on the tribocorrosion behavior of the stainless steel.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Heng Liu, Zening Wang, Lijie Qiao, Yanjing Su, Yu Yan
Summary: This study investigated the effects of protein and crevice width on crevice corrosion of CoCrMo alloy using wire beam electrodes. The results showed that proteins migrated to the crevice mouth, blocking it and decreasing Cl- concentration, which influenced corrosion distribution and rate. The accumulation of H+ inside the crevice promoted pitting corrosion, leading to crevice corrosion of the CoCrMo alloy. The corrosion rate of samples with a crevice width of 0.07 mm was five times higher than samples without a crevice.
Article
Materials Science, Multidisciplinary
Hang Yu, Yu Yan, Cheng Zhang, Lijie Qiao
Summary: The bake hardening mechanism of CP980 and DP1180 was compared and analyzed. It was found that CP980 undergoes a three-stage bake hardening process, resulting in a novel bake-hardening mechanism that is crucial for understanding the strain-baking behavior of advanced high-strength steels.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Huajie Niu, Qingyan Wang, Chuanxue Huang, Mengyang Zhang, Yu Yan, Tong Liu, Wei Zhou
Summary: Water electrolysis is an effective method for large-scale clean hydrogen production, but it consumes a significant amount of electric energy. This review discusses the progress and challenges of noble metal-based heterogeneous electrocatalysts used in water electrolysis for hydrogen production. Strategies for developing efficient catalysts, such as alloying and interface engineering, are also summarized.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Multidisciplinary
Heng Liu, Xin Huang, Shiyu Huang, Lijie Qiao, Yu Yan
Summary: This study compares the corrosion resistance, wear resistance, and tribocorrosion resistance of additive manufactured Ti6Al4V on different planes. The results indicate significant anisotropy in the performance of different planes.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Xingyuan Mei, Yu Yan, Lijie Qiao
Summary: This study systematically clarifies the dominant factors in hydrogen embrittlement (HE) of maraging steels in different aging states using experiments and numerical simulations. The interfacial properties of coherent & omega;/matrix interfaces and semi-coherent & eta;-Ni3Ti/matrix interfaces are the key factors affecting trap density and hydrogen diffusion, leading to variations in HE susceptibility. The improvement in ductility by reverted austenite further reduces HE susceptibility.
Article
Chemistry, Multidisciplinary
Huoshu Xu, Yu Yan, Yichen Wu, Junyi Wang, Yi Tang, Qiaowei Li
Summary: In this study, three heterometallic MOFs were synthesized using a bifunctional linker, demonstrating the potential of bifunctional linkers for the design and synthesis of heterometallic MOFs.
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
(2023)
Article
Materials Science, Multidisciplinary
Zihui Guo, Yu Yan
Summary: The effect of cryogenic plastic pre-strain on the hydrogen embrittlement of an equimolar FeNiCoCrMn high-entropy alloy was investigated. As the pre-strain increased, the ductility loss under harsh electrochemical hydrogen charging decreased while hydrogen adsorption was promoted. This study provides an effective strategy for achieving high strength and improved hydrogen embrittlement resistance.
Article
Materials Science, Multidisciplinary
Shiyu Huang, Heng Liu, Yanjing Su, Lijie Qiao, Yu Yan
Summary: This study investigated the strengthening effect of trace Li on Zn-4Cu alloys. It was found that the addition of trace amounts of Li significantly increased the strength while slightly reducing the elongation at fracture. Moreover, the presence of Li in the form of LiZn4 intensified galvanic corrosion and accelerated the early corrosion rate. The release of a large amount of Zn2+ caused by the addition of Li affected the phase composition of the main Zn-containing corrosion products. Additionally, the addition of 0.02 wt.% Li enhanced the inhibitory effect of the alloy on Staphylococcus aureus (S. aureus).
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Hang Yu, Cheng Zhang, Lijie Qiao, Yu Yan
Summary: Press forming and paint curing are necessary in automobile production, but the strain and baking effects on steel plates cannot be ignored. Previous research has focused on baking hardening but neglected embrittlement. This study introduces the concept of baking embrittlement value and clarifies the mechanism of baking embrittlement in DP steels.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Heng Liu, Cunao Feng, Zening Wang, Yi Zhang, Dekun Zhang, Yu Yan
Summary: Fretting crevice corrosion of total hip joints is related to joint replacement failure. In this study, an artificial crevice system that could simulate fretting corrosion in the center of the crevice was designed, and the effects of different crevice widths and crevice corrosion on fretting corrosion were studied.
Article
Electrochemistry
Liwei Cheng, Xinyu Sun, Gongkai Wang, Yuhua Chen, Qiaonan Zhu, Pengfei Hu, Wei Zhou, Hua Wang
Summary: The use of organic molecule PTCDA as a cathode material for high-areal-capacity rechargeable LIBs operated at low temperatures is investigated. The surface redox-active groups and electron delocalization in the pi-conjugated systems of PTCDA enable fast charge storage and enhanced electron transportation, resulting in a Li-PTCDA battery with high reversible areal capacity at low temperatures.
BATTERIES & SUPERCAPS
(2023)
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)
