Article
Energy & Fuels
Nargish Parvin, Dhananjaya Merum, Tapas Kumar Mandal, Sang W. Joo
Summary: In this study, multishelled hollow structures (HoMSs) with different shell numbers, thicknesses, pore sizes, surface areas, and void sizes were successfully synthesized using carbon microspheres as a hard template and two different strategies: two-step strategy (TsS) and one-step strategy (OsS). The ZnO@TiO2 HoMSSs synthesized by OsS (triple shelled) exhibited excellent potassium storage capacity, rate capability, reversibility, and cyclic life in aqueous alkaline batteries, thanks to the thinner shell, larger pore size, high surface area, and bigger voids that provided a distinctive buffering zone for charge-discharge and improved the structural stability and cycling stability during the OH- intercalation/de-intercalation process.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Materials Science, Ceramics
Bhargav Akkinepally, I. Neelakanta Reddy, Cheonghwan Lee, Tae Jo Ko, P. Srinivasa Rao, Jaesool Shim
Summary: Bundled V2O5 nanobelts decorated with Fe3O4 nanoparticles (F3V nanostructures) were synthesized as a low-cost electrode material for energy storage applications. The F3V nanostructures exhibited better electrochemical properties compared to pristine Fe3O4 nanoparticles and V2O5 nanobelts. The assembled F3V symmetric supercapacitor device showed excellent specific capacitance, energy density, power density, and long-term cycling stability, indicating their potential use in energy storage applications.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Xiaoxiao Wang, Pengzhen Wang, Weiliang Tian, Hongling Bu, Kewei Zhang
Summary: This study introduces the concept of integrating PEDOT into insulation voids in vermiculite blocks, achieving PEDOT-intercalated vermiculite electrodes for supercapacitor energy storage. The electrodes demonstrate rapid kinetic diffusion and charge transfer, as well as high specific capacitance and energy density. This research is of great significance for the development of electrochemical energy storage electrode materials.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Applied
Jie Zeng, Kamakshaiah Charyulu Devarayapalli, Changping Li, S. V. Prabhakar Vattikuti, Jaesool Shim
Summary: In this study, a new bimetallic metal-organic framework (BMOF) electrode was successfully developed using a solvo-hydrothermal strategy. The electrode exhibited significant capacitance and excellent energy and power densities, with good capacity retention after cycling, providing a viable approach for fabricating hybrid electrode materials for high-performance energy storage systems.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
Zhengxin Zhu, Zaichun Liu, Yichen Yin, Yuan Yuan, Yahan Meng, Taoli Jiang, Qia Peng, Weiping Wang, Wei Chen
Summary: The authors report an electrocatalytic hydrogen gas capacitor with improved specific energy, which can operate in pH-universal aqueous electrolyte solutions and a wide temperature range.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
K. Latha, S. Anbuselvi, P. Periasamy, R. Sudha, D. Velmurugan
Summary: The report prepared rod shape WO3/V2O5 nanocomposite using microwave-assisted method, showing significant enhancement in specific capacitance with the addition of WO3. Long cyclic test demonstrated excellent cyclic stability of the nanostructured composite material.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Engineering, Environmental
Jiali Yu, Zhimin Fan, Fei Yu, Hang Zhao, Pingping Yao, Shengnan Chen, Haiyan Yang, Caizhen Zhu, Jian Xu
Summary: As a unique elemental metallic Dirac material, borophene has shown great potential in electronics due to its increasing mechanical and electronic characteristics. In this study, a reliable method is proposed to explore the application of borophene in flexible electrodes by randomly stacking MXene and borophene flakes. It is found that the insertion of borophene remarkably enhances the energy storage capability and energy output of the hybrid film electrode, showing outstanding specific areal capacitance and excellent cyclic stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Ceramics
Ganesh Koyyada, Burragoni Sravanthi Goud, Mohamed Ouladsmane, Jae Hong Kim, Nam Hai Nguyen Thi, Nam Nguyen Dang
Summary: The demand for high-energy storage supercapacitors with appropriate designs has led to the development of g-C3N4/WO3(H2O)0.33 (GCN/WO) nanostructures, which have been prepared using a simple wet impregnation process. These nanostructures show improved electrochemical storage performance compared to their individual components, with increased specific capacitance and cyclic stability. The positive synergistic effect between GCN and WO in the nanostructures contributes to their enhanced electrochemical capacitor characteristics.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Environmental
Vikas Sharma, Sung Jae Kim, Nam Hoon Kim, Joong Hee Lee
Summary: The study successfully developed high-performance supercapacitors by rationally designing and combining materials to achieve improved specific capacitance and energy density, as well as demonstrating good performance in terms of power, efficiency, and stability.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Chemistry, Physical
Sudipta Biswas, Ananya Chowdhury
Summary: This article translates and summarizes the progress and future prospects of organic supercapacitors. It highlights their advantages of high energy density, lightweight design, and pseudocapacitive nature, as well as their potential for sustainable energy storage.
Article
Chemistry, Multidisciplinary
Akbar Mohammadi Zardkhoshoui, Bahareh Ameri, Saied Saeed Hosseiny Davarani
Summary: Mixed metal selenides have attractive structural characteristics and unique physicochemical properties, making them promising electrode materials for energy storage devices. Multi-shelled nickel-manganese selenide hollow spheres and double-shell nickel-iron selenide hollow spheres were successfully fabricated for supercapacitors, demonstrating excellent electrochemical performance and desirable longevity.
Article
Chemistry, Physical
Suma Chandra Reddy Niragatti, Sreekanth Thupakula Venkata Madhukar, Jonghoon Kim, Kisoo Yoo
Summary: In this study, Co-doped NiHCF/Ni-foam composites were synthesized and their electrochemical properties were investigated. The results demonstrate that the proposed composite material shows excellent performance as a positive electrode in hybrid supercapacitors, with high power density and energy density.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Energy & Fuels
Akshay Khorate, Anamika V. Kadam
Summary: This research article summarizes the latest research advances on patents published on supercapacitors, describing the fabrication methods of various carbon and polymer-based materials, designing concepts and characterization values of their materials in high-efficiency flexible supercapacitors with relevant applications in the public sector, electronics department, and medical field.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Shubhangi B. Bandgar, Madagonda M. Vadiyar, Chitra L. Jambhale, Jin-Hyeok Kim, Sanjay S. Kolekar
Summary: A rapid and low-cost ice crystal-assisted precipitation method was used to synthesize self-assembled structures of nickel ferrite nanoparticles and zinc ferrite nanorods, enhancing the overall performance of supercapacitors. The porous void-rich structures of the nanoparticles and nanorods provided excellent charge storage properties, with high specific capacities and durability demonstrated in the electrodes. Additionally, a flexible asymmetric supercapacitor device fabricated from these materials showed superhigh energy density and excellent long-term stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Energy & Fuels
Ping Gao, Zikang Pan, Qiang Ru, Jun Zhang, Minhui Zheng, Xing Zhao, Francis Chi-Chung Ling, Li Wei
Summary: This study proposes a biphasic cathode material for aqueous zinc-ion batteries, which combines the high conductivity of vanadium sulfide and high chemical stability of vanadium oxides. The cathode exhibits improved cycle life, rate capability, and low-temperature adaptability. The research provides a robust cathode with a biphasic structure for aqueous zinc-ion batteries.
Article
Engineering, Environmental
Peng Wang, Yifu Zhang, Hanmei Jiang, Xueying Dong, Changgong Meng
Summary: Aqueous energy storage systems are promising due to high safety, low cost and environmental friendliness. Recent research has focused on using nonmetal ions as charge carriers, with an emphasis on the excellent NH4+ storage performance of an ammonium vanadium oxide framework (NVO) in NH4Cl/PVA gel electrolyte. The NVO electrode displays significantly improved specific capacitance and cycle performance, showing potential for flexible aqueous NH4+-supercapacitors.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Tao Hu, Yang Wang, Xueying Dong, Yang Mu, Xiaoyu Pei, Xuyang Jing, Miao Cui, Changgong Meng, Yifu Zhang
Summary: This study reveals that the electrochemical properties of cobalt silicate are greatly influenced by critical factors during the synthesis process. Cobalt silicate compounds generated from different reaction systems exhibit differences in macrostate, microscopic morphology, composition, and valence, resulting in varying electrochemical performances for energy storage and the oxygen evolution reaction.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Physical
Peng Wang, Yifu Zhang, Ziyi Feng, Yanyan Liu, Changgong Meng
Summary: This study develops a dual-polymer strategy to enhance the electrochemical properties of hydrated vanadium oxide (HVO) for NH4(+) storages in a supercapacitor, achieving improved efficiency and cycle stability. The resulting material exhibits outstanding capacitance, long cycle stability, and potential practical applications.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Xiaoyu Pei, Shengping Yi, Yunfeng Zhao, Yang Mu, Yuting Yu, Miao Cui, Changgong Meng, Chi Huang, Yifu Zhang
Summary: A biomass-derived 3D porous carbon/cobalt silicate architecture was developed as a support for loading nickel oxide species, resulting in an earth-abundant and non-noble-metal-based NiOx/C/Co2SiO4 electrocatalyst. The introduction of NiOx nanoparticles significantly enhanced the OER performance of the catalyst, demonstrating its potential as an economical and efficient OER catalyst.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Engineering, Environmental
Ziyi Feng, Yifu Zhang, Jingjing Sun, Yanyan Liu, Hanmei Jiang, Miao Cui, Tao Hu, Changgong Meng
Summary: Researchers successfully synthesized a new bimetallic ion intercalation VOH material KMgVOH, in which the interaction of Mg2+ and K+ greatly improved the electrochemical performance of the battery.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Xueying Dong, Xuyang Jing, Yang Mu, Yuting Yu, Cui Miao, Changgong Meng, Chi Huang, Yifu Zhang
Summary: This paper investigates a double-sandwich-like composite structure to improve the electrochemical performance of Co2SiO4 and achieves promising results. The integrated construction can avoid the shortcomings of traditional materials and protect Co2SiO4, leading to significant improvements in capacitance and cycle stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Yanyan Liu, Yifu Zhang, Hanmei Jiang, Jingjing Sun, Ziyi Feng, Tao Hu, Changgong Meng, Zhenghui Pan
Summary: This study presents a cathode material for aqueous zinc-ion batteries (AZIBs) with a pea-like core-shell structure and porous microstructure, which shows high performance through oxygen defect engineering and heterojunction engineering. The material provides additional active sites, improved electronic conductivity, and prevents aggregation, resulting in excellent battery performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Xiaoyu Pei, Yifu Zhang, Yang Mu, Miao Cui, Fuping Tian, Changgong Meng
Summary: In this study, a potential OER catalyst, cobalt oxide decorated amorphous carbon/cobalt silicate (Co-rich C/CoSi), was developed and showed improved OER performance. The decoration of cobalt greatly enhanced the electrocatalytic activity of carbon/cobalt silicate. The synthesized Co-rich C/CoSi composite exhibited lower overpotential and Tafel slope compared to C/CoSi, as well as large electroactive surface area and long-term stability.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Physical
Teng Du, Limin Ren, Yifu Zhang, Miao Cui, Yue Chao, Ying Ge, Nan Liu, Yonglin An, Changgong Meng
Summary: A novel CuPcs/MOR photocatalyst was synthesized and demonstrated to be effective for NOx removal. The composite catalyst CuPcs0.85/MOR2 exhibited a degradation rate of NO2 reaching 71.4% after 2 hours of irradiation, attributed to the synergistic effect between CuPcs and MOR. The zeolite MOR with adsorption properties increased active sites for CuPcs and facilitated charge transfer.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Ziyi Feng, Yifu Zhang, Xiaomeng Yu, Yuting Yu, Chi Huang, Changgong Meng
Summary: Aqueous zinc-ion batteries (AZIBs) are considered as promising energy storage equipment with high capacity, wide source, and high safety. In order to improve the Zn ion storage properties, researchers synthesized aluminum-ion intercalated hydrated V2O5/reduced graphene oxide (AlVOH/rGO) composite, which exhibits good cycle stability and rate performance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Xueying Dong, Jingjing Sun, Yang Mu, Yuting Yu, Tao Hu, Cui Miao, Chi Huang, Changgong Meng, Yifu Zhang
Summary: This study successfully constructed a double-sandwich-like structure cathode material (rGO/MnSi/MoF-C) for aqueous rechargeable Zn-ion batteries (ARZIBs). The integrated structure improved the electronic conduction and exhibited promising Zn2+ storage capability. This research not only introduced a novel MnSi-based cathode for ARZIBs, but also provided insights into enhancing the electrochemical properties of transition metal silicates (TMSs) in energy-storing devices.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Yang Mu, Yifu Zhang, Xiaoyu Pei, Xueying Dong, Zongkui Kou, Miao Cui, Changgong Meng
Summary: This study reports an economical and promising OER catalyst composed of Fe-Co2SiO4 composite. The catalyst exhibits comparable or even higher catalytic activity than most transition metal oxide/hydroxide relevant composites in alkaline solution.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Applied
Hanmei Jiang, Wenbin Gong, Yifu Zhang, Xin Liu, Moaz Waqar, Jingjing Sun, Yanyan Liu, Xueying Dong, Changgong Meng, Zhenghui Pan, John Wang
Summary: This study addresses the bottleneck issue in the development of high-performance ZIBs by modifying the surface chemistry of V2O5 cathode nanomaterial. The doping of Al ions and the formation of oxygen vacancies improve the electrical conductivity and Zn2+ diffusion rate of V2O5, resulting in superior electrochemical performance.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Hanmei Jiang, Yifu Zhang, Moaz Waqar, Jin Yang, Yanyan Liu, Jingjing Sun, Ziyi Feng, Jianguo Sun, Zhenghui Pan, Changgong Meng, John Wang
Summary: In this study, a new dual-ion-in-sequence intercalation strategy is proposed to address the structural instability and sluggish diffusion kinetics of vanadium oxides in ZIBs. The Zn2+ storage mechanism evolves from solid-state ion diffusion kinetic into intercalation pseudocapacitance, resulting from the enlarged interlayer spacing. The improved ionic diffusivity, intercalation pseudocapacitance, and fast charge transferability contribute to the impressive rate capability and cycling stability of the ZIBs.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Peng Zhou, Siwei Zhang, Zhuoqun Ren, Yazhou Wang, Yifu Zhang, Chi Huang
Summary: The combustion performance of solid propellants is crucial for the overall application of rockets. Adding a catalyst to change the decomposition behavior of ammonium perchlorate (AP) is an effective strategy to control the combustion of solid propellants, and the synergistic catalysis of AP thermal decomposition by a bimetallic ZnCo-ZIF catalyst is more efficient. The study analyzed the thermal decomposition behavior of AP, the actual catalytic component, and the synergistic mechanism of the two metals.
INORGANIC CHEMISTRY FRONTIERS
(2022)
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)
