Article
Chemistry, Physical
Yao Liu, Rui Wang, Wei Yan, Wenbei Yu, Jiujun Zhang
Summary: This study synthesized hollow Cu2O nanospheres as anode materials for lithium-ion batteries using a simple and low-cost method, and investigated the relationship between structure and electrochemical performance. The Cu2O-HNs anode materials demonstrated high performance due to their high surface area and active surface facets. The results highlight the potential of Cu2O-HNs as high-energy anode materials for practical lithium-ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Jaejin Bae, Hyunsu Han, Yoongon Kim, Hyunwoo Ahn, Minho Kim, Won Bae Kim
Summary: The study involved the preparation of polygonal-stacked Cu2O (PCO) using a modified Benedict's reaction, resulting in materials with sharp tip structure and higher capacity compared to round edge PCO. The sharp tip shaped PCO electrode exhibited increasing discharge capacity and a larger diffusion coefficient than the round-structured PCO, indicating better electrochemical performance.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
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
Junchao Zhu, Hui Wang, Rongying Lin
Summary: The Si@SnO2 material with a coating structure effectively alleviates the volume expansion stress of silicon and improves its electrical conductivity, resulting in excellent electrochemical performance.
APPLIED SURFACE SCIENCE
(2022)
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
Chemistry, Physical
Siliang Chang, Shuai Han, Sen Ji, Shanshan Liu, Ye Liu, Xin Yang, Kai Feng, Jianjiang Hu
Summary: Niobium-based anode materials show promise for use in lithium-ion batteries due to their high specific capacity and safety. However, their low electronic conductivity limits their performance. In this study, a mixed-valent niobium-based phosphate, K3Nb6P4O26@C, was developed as an anode material. The mixed-valent Nb in KNPO enables multi-electron reactions and higher electronic conductivity. The 3D channels in the crystal structure of KNPO facilitate rapid lithium-ion transport. KNPO@C anode demonstrates a high specific capacity and excellent cycling stability, making it a potential practical material for high-performance LIBs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Madhushri Bhar, Udita Bhattacharjee, Kaliprasad Yalamanchili, Surendra K. Martha
Summary: The forefront of current lithium-ion battery technology is focused on dealing with the massive amount of e-waste generated by end-of-life batteries. This study presents an effective strategy to recycle the waste separator into valuable carbon, which exhibits higher capacity than recovered graphite anodes. However, the poor conversion efficiency and low product yield after carbonization may hinder large-scale implementation. By combining the recycled graphite with the recycled carbon derived from the separator, the composite demonstrates enhanced capacity and Li-ion diffusivity for high-performance lithium-ion batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Analytical
Jiahao Xu, Jiaojiao Zhao, Ning Zhang, Xiaojing Chen, Xuli Ding
Summary: Researchers have successfully encapsulated N-doping porous carbon on silica SBA-15 (SBA@PNC) for lithium-ion batteries, improving the low capacity and poor rate capability issues faced by silica-based anodes. The SBA@PNC composite shows improved electrochemical performance, with rapid lithium ion diffusion, abundant sites of electrochemical activity due to nitrogen doping, and good electrical transport from porous carbon. This study provides insights into the transfer and diffusion kinetics of Li+ ions in N-doping SiO2-C composite and offers a direction for future improvement of silica-based anodes.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
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
Materials Science, Multidisciplinary
Junsheng Zhu, Chengjun Zhang, Ziqiang Fan, Guangying Zhou, Suilian Luo, Yuhai Wang, Guang Shi, Ronghua Zeng, Qiong Hou
Summary: The effect of different carboxylic acid substituents on the electrochemical performance of polythiophene anode materials was discussed. Isophthalic acid substituted polythiophene (P3TBDCOOH) outperforms formic and parabenzoic acid substituted polythiophenes (P3-TCOOH and P3-TBCOOH) in terms of cycle and rate performance. P3-TBDCOOH exhibits higher conductivity than P3-TBCOOH and P3-TCOOH due to the presence of a benzene ring between the thiophene ring and the carboxyl group. The results suggest that pendant isophthalic acid can enhance the electrochemical activity of polythiophene, increasing the reversible capacity.
Article
Chemistry, Physical
Minkang Wang, Xinglong Zhang, Xiaojia He, Bin Zhu, Hui Tang, Chao Wang
Summary: Tin dioxide composites with flower-like carbon layer and Cu2O show enhanced conductivity and structural stability, exhibiting superior lithium storage capability, cycle stability, and rate performance in lithium-ion batteries, with great potential for scientific research and future application.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Na Zhang, Enqi Liu, Hongwei Chen, Jinhui Hou, Chao Li, Hongri Wan
Summary: LaCoO3/Co3O4-800 composites exhibit excellent lithium storage performance, with high reversible capacity and superior cycling stability, making them potential candidates for LIBs anodes.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Zehao Zhang, Xiang Liu, Youjun Lu, Haibo Li
Summary: This work proposes a facile covalent self-assemble strategy to prepare the ZrN@rGO composite for enhanced LIB. The results show that a strong Zr-C covalent bond is formed between ZrN and rGO, and electron transfer promotes charge density at the ZrN@rGO heterointerface. The volume change of ZrN can be effectively alleviated by coupling with rGO, leading to a high specific capacity in the lithium-ion battery.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Wei-Lin Lin, Hou-Yang Zhong, Yue-E Huang, Xian Lu, Yi Zhao, Jia-Xiang Zhang, Ke-Zhao Du, Xiao-Hui Wu
Summary: This study developed tetraphosphorus tetraselenide nanoparticles confined within porous carbon as a new anode material for lithium-ion batteries, exhibiting high electrical conductivity and excellent cycling stability, providing new guidance for the development of high-performance energy storage devices.
Article
Materials Science, Multidisciplinary
U. Ray, D. Das, A. Mitra, S. B. Majumder, S. Das
Summary: Zinc antimony oxide with a tri-rutile structure was synthesized using a solution-based method and fabricated into electrodes through electrophoretic deposition with carbon black. The optimized electrode showed steady capacity and excellent rate capability, making it a potential anode for lithium-ion batteries.
Article
Chemistry, Multidisciplinary
Jingao Zheng, Fuyu Xiao, Hongjun Jin, Changlin Cao, Zewei Lei, Yiyi Wang, Mingdeng Wei, Qingrong Qian, Lingxing Zeng, Qinghua Chen
Summary: This study successfully develops a N/P co-doped carbon fiber composite with MoS2 nanocrystals by using waste leather as the adsorbent and bioreactor. The resulting anode material shows enhanced storage capacity and long cycle life for sodium/potassium-ion batteries. This research provides new insights into the application of waste biomass in energy storage.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Chemistry, Inorganic & Nuclear
Zewei Lei, Jingao Zheng, Xiaotong He, Yiyi Wang, Xuhui Yang, Fuyu Xiao, Hun Xue, Peixun Xiong, Mingdeng Wei, Qinghua Chen, Qingrong Qian, Lingxing Zeng
Summary: A composite material, WS2-SPAN, consisting of tungsten sulphide encapsulated in a sulphurized polyacrylonitrile, was prepared and exhibited impressive ultralong lifespan and stable circulation capacity over a wide temperature range. The material also showed optimized high-rate performance and ultrastable cycling properties for sodium and potassium storage. The electrochemical storage mechanism of WS2-SPAN composites was elucidated through theoretical calculations and electrochemical dynamics.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Zhihao Su, Jionghao Huang, Runhao Wang, Yi Zhang, Lingxing Zeng, Yufei Zhang, Haosen Fan
Summary: Multilayer structural covalent organic frameworks (COFs) connected by double functional groups have been successfully synthesized. They exhibit excellent potassium storage performance, including high reversible capacity and outstanding cycling stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Ziyan Yuan, Xuhui Yang, Chuyuan Lin, Peixun Xiong, Anmin Su, Yixing Fang, Xiaochuan Chen, Haosen Fan, Fuyu Xiao, Mingdeng Wei, Qingrong Qian, Qinghua Chen, Lingxing Zeng
Summary: In this work, the morphology of vanadium nitride (VN) was modulated using different molar amounts of cetyltrimethylammonium bromide (CTAB). The optimized electrode exhibited a porous architecture and excellent electrical conductivity, alleviating volume expansion/contraction and enabling fast ion transmission during zinc-ion storage. The CTAB-modified VN cathode underwent a phase transition that provided a better framework for vanadium oxide (VOx), increasing the capacity. The cathode showed excellent electrochemical performance, high cycling stability, and wide temperature range adaptability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Ziyan Yuan, Fuyu Xiao, Yixing Fang, Peixun Xiong, Xiaoli Sun, Xuehui Duan, Xuhui Yang, Haosen Fan, Mingdeng Wei, Qingrong Qian, Qinghua Chen, Lingxing Zeng
Summary: In this study, a vanadium dioxide/ graphene oxide (VO2(B)/GO) sample was constructed through hydrothermal route, which exhibited remarkable rate capability. The presence of oxygen vacancies in VO2(B)/GO weakened the electrostatic force, while GO prevented vanadium oxidation. The electrode showed a high reversible capacity of 423 mAh g-1 at 0.5 A g-1 and maintained long-life cycling properties at 15 A g-1. The combination of oxygen vacancies and GO contributed to excellent performance and prevented the collapse of VO2 structure during cycling. VO2(B)/GO also exhibited excellent performance in all-climate conditions (-15-60 degrees C).
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Rui Sun, Xincheng Guo, Siyang Dong, Caihong Wang, Lingxing Zeng, Shengjun Lu, Yufei Zhang, Haosen Fan
Summary: In this study, a heterostructure of Zn3V3O8 and ZnO encapsulated in a 3D interpenetrating carbon network (Zn3V3O8@ZnO@NC) was prepared as a cathode material for aqueous zinc-ions batteries (AZIBs). The electrode material exhibited remarkable cycling stability and super-stable rate performance, thanks to the structural stability of the cross-stacked structure and the excellent electrochemical conductivity of the 3D interpenetrating carbon network. The zinc ion storage mechanism of Zn3V3O8@ZnO@NC was revealed through ex-situ XRD and XPS characterizations.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Zheng-Yang Huo, Yuxin Yang, Jang-Mook Jeong, Xiaoxiong Wang, He Zhang, Mingdeng Wei, Keren Dai, Peixun Xiong, Sang-Woo Kim
Summary: A self-powered water disinfection system, driven by triboelectric nano generators, is presented for efficient water disinfection in rural and disaster-stricken areas lacking power supplies. The system utilizes a flow-driven TENG to generate electricity and a metal-organic framework nanowire array for H2O2 generation and electroporation. The prototype achieves complete disinfection over a wide range of flows with low water flow thresholds, offering promising potential for pathogen control.
Article
Materials Science, Multidisciplinary
Yan-Ru Liu, Ze-Wei Lei, Ren-Ping Liu, Xin-Ye Li, Pei-Xun Xiong, Yong-Jin Luo, Qing-Hua Chen, Ming-Deng Wei, Ling-Xing Zeng, Qing-Rong Qian
Summary: In this study, stable Sn-doped metal phase tungsten selenide (1T-WSe2-Sn) was fabricated using a simple calcination technique. N-doping and Sn-doping were introduced to promote electron/ion transport and improve structural stability. The optimized 1T-WSe2-Sn electrode exhibited remarkable cycling lifespan and rate capability when applied in sodium ion batteries (SIBs) as an anode, as well as in potassium ion batteries (PIBs).
Article
Chemistry, Physical
Peixun Xiong, Chuyuan Lin, Ying Wei, Jung-Hui Kim, Gun Jang, Keren Dai, Lingxing Zeng, Shuping Huang, Seok Joon Kwon, Sang-Young Lee, Ho Seok Park
Summary: In this study, a charge-transfer complex electrolyte additive, 7,7,8,8-tetracyanoquinodimethane (TCNQ), with high affinity for zinc was used to form a dense and robust interfacial complex layer on the zinc anode, suppressing the activity of H(2)O. The complex layer enabled the formation of a Zn-Zn-(TCNQ)(2) Ohmic contact interface, facilitating rapid ion/electron transport, improving electric field distribution, and preventing direct contact between active H2O and the zinc anode, resulting in a dendrite-free zinc anode and efficient zinc plating/stripping kinetics. As a result, the Zn||Zn symmetrical cell exhibited high plating/stripping reversibility for over 1000 hours at 20 mA cm(-2) and 5 mA h cm(-2), and a high depth of discharge of 43%. Furthermore, the Zn||MnO2 full cell demonstrated a high capacity of 143.3 mA h g(-1) at 2000 mA g(-1) even after 4000 cycles, with a capacity retention of 94.7% after returning to 100 mA g(-1).
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Jinyi Lin, Shengjun Lu, Yufei Zhang, Lingxing Zeng, Yi Zhang, Haosen Fan
Summary: Selenide-doped bismuth sulfides (Bi2S3-xSex) were prepared to improve electronic conductivity and interlayer spacing. Anisotropic ReS2 nanosheet arrays were grown on the surface of Bi2S3-xSex to form a hierarchical heterostructure (Bi2S3-xSex@ReS2). This strategy greatly improved the electrochemical conductivity and relieved volume expansion during charge/discharge processes, resulting in outstanding battery performance for SIBs and PIBs.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Yiyi Wang, Fuyu Xiao, Xi Chen, Peixun Xiong, Chuyuan Lin, Hong-En Wang, Mingdeng Wei, Qingrong Qian, Qinghua Chen, Lingxing Zeng
Summary: The SnSe2-SePAN composite, fabricated through controllable electrospinning and selenylation, exhibits stable and wide-temperature range sodium/potassium storage properties. It demonstrates a high storage capacity and excellent feasibility in a wide working temperature range, delivering an ultralong cycling life even at high current densities. The study breaks new ground in improving the wide temperature workable performance of sodium/potassium storage.
Article
Chemistry, Inorganic & Nuclear
Lihong Xu, Jiefeng Ye, Wenti Guo, Tingjie Chen, Xiaochuan Chen, Qingrong Qian, Jianmin Zhang, Mingdeng Wei, Xiangfang Peng, Lingxing Zeng
Summary: In this study, a hybrid material called VSe2/selenized polyacrylonitrile (SePAN) was designed as an anode for potassium-ion batteries. SePAN acts as a dual functional matrix that effectively cushions volumetric variation and provides significant capacity improvement. VSe2 anchored on the SePAN substrate accelerates the reaction kinetics, resulting in excellent energy storage and cycling performance.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Jingwei Zhu, Xumeng Hu, Zhuoyan Liu, Minghuang Guo, Ying Zhang, Yafeng Li, Junming Li, Mingdeng Wei
Summary: The interfacial photocatalysis of metal oxide electron transport layers (ETLs), especially TiO2, in organometal halide perovskite solar cells (PSCs) has detrimental effects on device stability. A UV absorber, 4,4'-oxybisbenzoic acid (OBBA), was used as a modification layer between TiO2 and perovskite to prevent UV photocatalytic degradation. The modified device showed a high power conversion efficiency (PCE) of up to 22.14% and excellent stability under extreme UV irradiation (365 nm, 600 mW cm(-2); 275 nm, 10 mW cm(-2)).
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Minghuang Guo, Jianbin Xu, Jinting Li, Jianting Huang, Jingwei Zhu, Yafeng Li, Peng Gao, Junming Li, Mingdeng Wei
Summary: To improve the performance of perovskite solar cells (PSCs), researchers have used passivators to address the defects of perovskite. In this study, a passivator called TA-MN, which has a symmetric bidentate acceptor, was found to have a strong synergistic passivating ability due to the presence of two symmetric cyano groups (CN). This passivator achieved a higher power conversion efficiency (PCE) of 21.19% compared to the TA-CA passivator (20.54%) and the control group (19.49%). The TA-MN-based PSCs also demonstrated good stability and scalability. These findings provide useful insights for the design of passivators with symmetric bidentate acceptors.
JOURNAL OF MATERIALS CHEMISTRY A
(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)
