Article
Chemistry, Multidisciplinary
Leichao Meng, Jianhong Peng, Yi Zhang, Yongfu Cui, Lingyun An, Peng Chen, Fan Zhang
Summary: In this paper, different methods were employed to prepare lithium vanadium oxide (LVO) samples. It was found that the LVO samples obtained by sol-gel method had uniform nanoparticle morphology. The LVO/graphene (GN) composite synthesized by sol-gel method showed outstanding cycling performance and rate performance, attributed to the improved distribution of LVO by flexible GN and the formation of a highly conductive network.
Article
Chemistry, Physical
Fen Wang, Tengfei Li, Yuan Fang, Zijing Wang, Jianfeng Zhu
Summary: Heterogeneous structured Mn2O3/Fe2O3 composites were designed and studied as anode materials for lithium ion batteries, demonstrating superior specific capacity, excellent cycling stability, and outstanding rate capability. The feasibility of a full lithium ion battery with heterostructure Mn2O3/Fe2O3 as anode and LiFePO4 as cathode was also verified, showing great performance in improving electrochemical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Energy & Fuels
Jianhang Yang, Rizwan Ur Rehman Sagar, Tauseef Anwar, Xiaocheng Li, Zhang Qian, Tongxiang Liang
Summary: The study focuses on the synthesis of graphene foam as anode material using the CVD method, and its stable performance in coin-cell lithium-ion batteries with a high specific capacity at 0.1 C. The research shows that the GF-anode exhibits stable performance in charge-discharge cycles with high specific capacity.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
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
Electrochemistry
G. N. Suresh Babu, N. Kalaiselvi
Summary: MnCr2O4/Graphene (MCO/G) composite shows high reversible specific capacity and Coulombic efficiency in lithium ion batteries, making it a potential next generation anode material with scalability possibilities.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Hong Wang, Yuejin Ma, Wenming Zhang
Summary: The preparation of Fe3O4-Sn@CNFs with Fe3O4 and Sn nanoparticles loaded onto nanofibers surface resulted in an anode material with high reversible specific capacity and cycle stability, effectively increasing the electrochemical reaction sites and improving the rate and cycling performance of the electrodes.
Article
Chemistry, Physical
Junying Zhang, Zhi-Ling Hou, Xiaoming Zhang, Chuanbo Li
Summary: In this study, Si@Cu composite anode material prepared by magnetron sputtering method showed enhanced electrochemical performance for lithium-ion batteries. The introduction of Cu component and carbon layer improved conductivity and cyclic performance of the electrode. The preparation methods are mass-productive and the magnetron sputtering method has broad application prospects.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Yanwei Li, Wenhan Xu, Jinhuan Yao, Bin Huang, Shunhua Xiao, Jianwen Yang
Summary: A facile preparation of porous amorphous FePO4/reduced graphene oxide (rGO) composite from jarosite residue is reported, demonstrating its potential as a high-performance anode material for lithium-ion batteries (LIBs).
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Physical
Xiaofei Liu, Yuandong Wu, Dajiang Mei, Shaoguo Wen
Summary: The pyrochlore-type material Co2Sb2O7@C was synthesized through high-temperature solid-state reactions. Co2Sb2O7@C exhibits superior electrochemical performance compared to Co2Sb2O7, with higher initial discharge capacity and specific discharge capacity, as well as a higher contribution rate of pseudocapacitance.
Article
Energy & Fuels
Hong Zeng, Yawen He, Mohamad Chamas
Summary: A Si/Cu composite anode was prepared using a solid mechanosynthesis method and wet chemical etching. The addition of Al80Si20 and super p carbon improved the homogeneity and stability of Si/Cu distribution. The synthesized Si/Cu composites showed higher stability and performance after cycling.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Antunes Staffolani, Hamideh Darjazi, Gilberto Carbonari, Fabio Maroni, Serena Gabrielli, Francesco Nobili
Summary: The composite anode material based on Fe3O4 and reduced graphene oxide shows high specific capacities and outstanding cycling stability, attributed to the synergistic effect of nanostructured Fe3O4 morphology and inter-particle conductivity of graphene nanosheets. The exceptional capacity delivered at high rates suggests potential application in high-power systems.
Article
Chemistry, Multidisciplinary
Tongjun Li, Hongyu Dong, Zhenpu Shi, Hongyun Yue, Yanhong Yin, Xiangnan Li, Huishuang Zhang, Xianli Wu, Baojun Li, Shuting Yang
Summary: In this study, CoS2@rGO (CSG) nanocomposite was synthesized by a hydrothermal method and used as an electrode material for lithium-ion batteries. The nanocomposite showed high specific capacity, excellent rate performance, and outstanding cycle stability.
Article
Chemistry, Physical
Hong Nhung Thi Nguyen, Phi Nguyen Ngoc, Ha Tran Huu, Thi Thuy Trang Phan, Duc Nhan Nguyen, Thanh Huong Thi Nguyen, Thang Nguyen Van, Lan Nguyen Thi, Minh Kha Le, Van Man Tran, My Loan Phung Le, Vien Vo
Summary: Germanium (Ge) has great potential as an anode material in lithium-ion batteries due to its high theoretical capacity. However, the volume change during cycling leads to capacity fading. In this study, GeO2/Ge composite was synthesized and showed improved cycling stability and capacity compared to pure Ge, attributed to the impact of GeO2 on reducing volume change.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Wen Ding, Xiaozhong Wu, Yanyan Li, Shuo Wang, Zhichao Miao, Pengfei Zhou, Jin Zhou, Shuping Zhuo
Summary: A novel three-dimensional graphene-wrapped Co0.85Se@C composite was prepared through a capillary evaporation-induced drying method, resulting in a compact material with strong covalent interaction. The composite showed high volumetric capacity, good cycling stability, and rate performance, making it a promising electrode material for lithium-ion batteries.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Pei-Min Ting, Jun-Ying Huang, Rasu Muruganantham, Wei-Ren Liu
Summary: This study proposes two different nitrogen doping approaches to investigate the electrochemical behavior of few-layer graphene as anode materials for Li-ion batteries. The results show that nitrogen doping can significantly improve the electrochemical performance of few-layer graphene.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Liqin Wang, Bolin Liu, Youqi Zhu, Min Yang, Changliang Du, Zhanli Han, Xiuyun Yao, Xilan Ma, Chuanbao Cao
Summary: Transition-metal compounds have potential as energy storage materials, but their capacity decay and rate capability are still limited. In this study, hierarchical carbon-encapsulated yolk-shell nickelic spheres were fabricated as anode materials for sodium-ion batteries using a metal-organic framework-derived route. The Ni-MOF precursors were converted into carbon-encapsulated Ni2P, NiS2, and NiSe2 while maintaining their sphere-like morphology. The Ni2P/C sample exhibited lower polarization, smaller voltage gap, and faster kinetics, resulting in higher initial specific capacity and reversible capacity.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Bolin Liu, Liqin Wang, Youqi Zhu, Hui Peng, Changliang Du, Xinyu Yang, Quanqing Zhao, Jianhua Hou, Chuanbao Cao
Summary: This study reports a thermodynamics-driven morphology manipulation strategy to tailor VS4 nanosheets into 3D hierarchical self-assembled architectures, demonstrating good electrochemical performances as anode materials for sodium-ion batteries.
Article
Chemistry, Multidisciplinary
Tianyu Xia, Kai Zhao, Youqi Zhu, Xiaoyan Bai, Han Gao, Ziyu Wang, Yue Gong, Menglin Feng, Shunfang Li, Qiang Zheng, Shouguo Wang, Rongming Wang, Haizhong Guo
Summary: Mixed-dimensional Pt-Ni alloy polyhedral nanochains were fabricated to address the unbalanced relationship between activity and stability in Pt nanocatalysts. These nanochains exhibited significantly enhanced mass activity for methanol oxidation reaction and improved stability against CO poisoning. Additionally, they achieved a higher half-wave potential for oxygen reduction reaction.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Lihua Yao, Wenqiang Cao, Jianguo Zhao, Qi Zheng, Yuchang Wang, Shang Jiang, Qiliang Pan, Jie Song, Youqi Zhu, Maosheng Cao
Summary: This study fabricated a novel flower-like NiFe2O4/graphene composite as EMI shielding material and anode material for lithium-ion batteries. The composite showed excellent EMI shielding performance and electrochemical performance, which could be attributed to the structure regulation and synergistic effect of graphene and NiFe2O4.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Changlian Du, Zhanli Han, Hui Peng, Jiachen Tian, Xinyu Yang, Tianyu Xia, Xilan Ma, Youqi Zhu, Chuanbao Cao
Summary: Anion substitution and crystal facet regulation can optimize electrochemical reaction kinetics and enhance magnesium storage performance of CuS cathodes. Se-substituted CuS nanotube cathodes exhibit excellent storage capacity, remarkable cycling stability, and good rate capability.
JOURNAL OF POWER SOURCES
(2022)
Article
Engineering, Environmental
Changliang Du, Youqi Zhu, Xinyu Yang, Zhao Lv, Jiachen Tian, Xiao Pei, Xin Liu, Xilan Ma, Jianhua Hou, Chuanbao Cao
Summary: By in-situ anion substitution with heavy element tellurium, lattice expansion is achieved to improve the lithium ion storage performance of Cu7.2S4 nanotube cathode, delivering high discharge capacity of 354.1 mAh g(-1) at 0.1 A g(-1) and remarkable rate capability of 85.1 mAh g(-1) at large current loading of 2.0 A g(-1). The reinforced Te-substitution generates lattice expansion and effectively adjusts the Mg2+ storage reaction, leading to significant improvement in Mg2+ storage performances of Te-substituted Cu7.2S4 nanotube, which holds great potential in electrode material modification for improving battery chemistry.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Zhitao Wang, Song Chen, Liyuan Wang, Shengbo Gao, Miao Li, Hong Li, Youqi Zhu, Enbo Shangguan
Summary: In this study, two-dimensional ultrathin spinel CuCo2S4 nanosheets were synthesized through microwave-assisted liquid-phase growth and anion-exchange post-sulfuration method. After cyclic activation, the CuCo2S4 nanosheets exhibited good electrochemical reversibility and excellent magnesium storage performance in the voltage range of 0.1-2.1 V.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Jiachen Tian, Youqi Zhu, Xiuyun Yao, Lifen Yang, Changliang Du, Zhao Lv, Minchen Hou, Shaolong Zhang, Xilan Ma, Chuanbao Cao
Summary: This study presents a one-pot chemical vapor deposition strategy to fabricate N-coordinated Fe single-atom (Fe-SA/NC) catalysts for highly effective oxygen reduction reaction (ORR) under alkaline conditions. The ferrocene(ii) powder is sublimated into vapor sources, trapped by nitrogen-rich zeolitic imidazolate frameworks (ZIFs), and transformed into isolated Fe-N sites through subsequent pyrolysis. The atomically dispersed Fe species coordinated with nitrogen atoms show superior ORR performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Engineering, Environmental
Xin Liu, Youqi Zhu, Changliang Du, Jiachen Tian, Lifen Yang, Xiuyun Yao, Zhitao Wang, Xilan Ma, Jianhua Hou, Chuanbao Cao
Summary: A cation-doping strategy is reported to regulate the electrochemical Mg2+ storage behaviors of Co-doped CuS nanosheet cathodes. With cationic Co-doping, the optimized cathodes exhibit fast electrochemical diffusion kinetics, optimized reversible redox reaction, and enhanced long-term cyclic life. The improved performance can be attributed to the cation-doping effect that efficiently accelerates Mg2+ diffusion kinetics.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Chen Qiao, Zahid Usman, Jie Wei, Lin Gan, Jianhua Hou, Yingying Hao, Youqi Zhu, Jiatao Zhang, Chuanbao Cao
Summary: A catalyst kinetics optimization strategy is proposed based on tuning active site intermediates adsorption. The construction of M-OOH on the catalytic site before the rate-determining step is crucial in this strategy, as it optimizes the overall catalytic kinetics by preventing competition from other intermediates. Through significantly reducing the kinetic energy barrier, M-OOH is formed on the active site at low overpotential, resulting in improved kinetics.
Article
Chemistry, Physical
Lifen Yang, Youqi Zhu, Xiuyun Yao, Changliang Du, Zhanli Han, Jiachen Tian, Xin Liu, Xilan Ma, Chuanbao Cao
Summary: This study reports on a new efficient precious-metals-free electrocatalyst Fe-SA/NC, which is constructed by molten salt-assisted pyrolysis to create carbon nanocages with highly atomically dispersed Fe-N4 sites as air cathode. The catalyst exhibits outstanding catalytic activity and cycling stability, and delivers high power density and long-term durability in Znair batteries.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Physical
Xiao Pei, Youqi Zhu, Changliang Du, Hui Peng, Zhitao Wang, Xilan Ma, Jianhua Hou, Chuanbao Cao
Summary: Single-crystal Cu(9)S(5) nanorods fabricated via an efficient microwave-assisted synthesis method demonstrate fast ion diffusion, favorable long-term stability, and exceptional rate performance in sodium-ion batteries. This work provides insights for developing high-rate anode materials for sodium-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Xin Liu, Qianwei Zhang, Changliang Du, Xiao Du, Youqi Zhu, Chuanbao Cao
Summary: Rechargeable magnesium batteries (RMBs) are potential rivals to replace lithium-ion batteries as next-generation energy storage devices. However, the limited choice of high-performance cathode materials hinders the applications of RMBs. Copper chalcogenides have gained attention as prospective electrode materials due to their high theoretical capacity, but the challenge lies in achieving high energy density and rapid kinetics of Mg2+ insertion/extraction. This review presents a comprehensive summary of the reaction mechanisms of copper chalcogenide cathodes for ion storage and highlights five design and modification strategies for enhancing their performance.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Muhammad Kashif Naseem, Mian Azmat, Changliang Du, Rong Jiang, Youqi Zhu, Meishuai Zou, Chuanbao Cao
Summary: RMBS is considered a promising candidate device for future commercialization due to its theoretically higher volumetric capacity, natural abundance, low cost, dendrite free characteristic, and ecofriendly nature. However, the potential application of RMBS is hindered by the low capabilities caused by the sluggish diffusion kinetics of the highly polarized Mg2+ ions. This study focused on enhancing the diffusion contribution of Mg2+ ions in VS4 cathodic materials by synthesizing nanosized particles and introducing sulfur vacancies through nickel substitution. The results showed significant improvement in the diffusion of Mg2+ ions, leading to enhanced cathodic performance and improved electrochemical properties, making it an effective strategy for developing efficient VS4 cathodes for RMBS.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Attia Batool, Youqi Zhu, Xilan Ma, Muhammad Imran Saleem, Chuanbao Cao
Summary: Tin monochalcogenides (SnSe, SnS) have great potential in various applications due to their excellent properties. The research shows that the isotropic behavior of these materials increases as the thickness increases, and they have large bandgap energies and isotropic properties.
APPLIED SURFACE SCIENCE ADVANCES
(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)