Article
Chemistry, Physical
Hang Zhang, Fang Wang, Yanzhi Wang, Hengwei Wei, Wei Zhang, Rui Cao, Haoquan Zheng
Summary: This study presents a simple approach to construct a two-dimensional hollow carbon skeleton decorated with ultrafine Co3O4 nanoparticles. The composite, derived from a leaf-like zeolitic imidazolate framework-L (ZIF-L (Co)) via etching coordination using tannic acid (TA), possesses a unique structure consisting of a 2D carbon skeleton, ultrafine Co3O4 nanoparticles, and open channels. This structure enables enhanced electron transport, alleviated volume change, and facilitated ion diffusion, leading to superior reversible cycle performance and impressive rate property of the lithium-ion batteries assembled using this composite as the anode material. This research provides an efficient strategy for implementing transition metal oxide-based composites in energy storage applications.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Tao Liu, Yinhu Qu, Jiahao Liu, Liuyang Zhang, Bei Cheng, Jiaguo Yu
Summary: The core-shell structured composite of hollow carbon spheres and SiO2 nanosheets decorated with nickel nanoparticles shows improved performance for silicon oxide anode materials in lithium-ion batteries, with enhanced discharge capacity and prolonged cyclic durability.
Article
Chemistry, Multidisciplinary
Zheng Liu, Mengkang Yu, Xiaodan Wang, Fengyu Lai, Chao Wang, Nan Yu, Hongxia Sun, Baoyou Geng
Summary: The hollow sandwich-like TiO2@Co3O4@Co3O4/C composite, synthesized by coating Co3O4 nanosheets and TiO2 particles on Co3O4/C hollow spheres, exhibits excellent lithium storage performance and stability due to its superior structure that combines the advantages of each component with favorable electron-transfer and Li+-diffusion properties.
CHEMICAL COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Zheng Zhang, Ying Huang, Xiang Li, Zhiming Zhou
Summary: In this article, CoZn-based hollow nanoboxes with electrochemical synergy are prepared in a simple way. The structure effectively shortens the transmission distance of ions and electrons, alleviates volume expansion, and provides more active sites for electrochemical reactions. The electrode exhibits stable cycle performance and long cycle life, demonstrating its practical application value.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Jiafeng Wu, Yang Chen, Jianmin Chen, Yajing Wang, Ting Fan, Yingwei Li
Summary: This study presents a facile fabrication method for obtaining self-supported hollow Co3O4@carbon nanotubes on carbon cloth electrodes with excellent electrochemical performance. The electrodes show high areal capacity and cycling stability in both lithium-ion and lithium-sulfur batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Dongwei Xu, Huanhuan Guo, Feifan Zhang, Yanmei Wu, Xiaoqin Guo, Yumei Ren, Desheng Feng
Summary: Hollow nanoboxes structure has gained attention for their microwave absorption properties. In this study, hollow CoS2 nanoboxes with adjustable interspaces were fabricated and their structure and performance were investigated. The paraffin-based composites showed superior microwave absorption capacities, providing a reference for the construction of high-performance microwave absorbers with unique hollow structure.
Article
Materials Science, Multidisciplinary
Ruixiang Wang, Yanyang Wang, Yanhua Lu, Jiangfeng Zheng, Caini Zhong, Jiaming Liu, Jianjun Liu, Shubiao Xia
Summary: In this study, ZIF-67 nanoparticles with a reuleaux tetrahedron morphology were synthesized using a surface-coordinated polymerization method, and nitrogen-doped hollow porous Co3O4 nanoparticles were anchored on reduced graphene oxide to obtain HP-Co3O4/NC@rGO composites. The excellent electrochemical performance of the composite is mainly attributed to the synergistic effect of the hollow nanostructure and graphene network.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Quan-ya Wei, Hua Zhu, Shi-jin Yu, Guo-qian Xu, Jian-hong Yin, Jia-hao Tong, Tian-rui Chen, Xuan-nan He, Ping-chun Guo, He-dong Jiang, Jia-ke Li, Yan-xiang Wang
Summary: This work investigates the hollow structure that controls the Fe3O4@C void size using a template method to address the issue of large volume expansion during lithiation of iron oxide anode materials in lithium-ion batteries. The hollow structure is controlled by the dosage of ethyl orthosilicate (TEOS), and Fe2O3 is coated with phenolic resin to obtain an anode electrode material with excellent performance. The samples are analyzed for their microstructure and morphology as well as their electrical properties, and the Fe3O4@C-1.0 sample with a large vacancy shows exceptional electrochemical properties, rate performance, and stable cycle performance.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Biao Wang, Yilun Ren, Yuelei Zhu, Shaowei Chen, Shaozhong Chang, Xiaoya Zhoua, Peng Wanga, Hao Sun, Xiangkang Menga, Shaochun Tanga
Summary: An advanced N-doped carbon microreactor embedded with Co3O4/ZnO heterojunctions is designed as a dual-functional host for optimizing both S cathode and Li metal anode, resulting in excellent cycling stability and high rate capability of Li-S batteries.
Article
Engineering, Environmental
Xintong Lian, Na Xu, Yanchen Ma, Feng Hu, Huaixin Wei, Han-Yi Chen, Yongzhi Wu, Linlin Li, Diansen Li, Shengjie Peng
Summary: A reliable synthetic approach was reported for the in-situ growth of Co-based ZIF-67 on electrospun nanofibers, followed by carbonization and sulfurization to form Co1-xS hollow polyhedrons anchored on multichannel carbon nanofibers (Co1-xS/MCF) for LIBs and SIBs. The resulting binder-free Co1-xS/MCF anode demonstrated advanced electrochemical properties for both LIBs and SIBs, attributed to the unique multichannel nanostructure and Co1-xS hollow polyhedrons providing active sites and reducing structural strain.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Chunyan Zhao, Lingsheng Zhang, Shuang Jing, Shuo Kong, Xiaojie Zhang, Xiong Lan, Yongbao Feng, Chenglong Liu, Konghu Tian, Wenbin Gong, Qiulong Li
Summary: In this study, a self-standing electrode with heterostructure was successfully constructed to solve the issues of low conductivity, poor electrochemical kinetics, and unsatisfactory cycling performance of cobalt oxide in lithium-ion batteries. The experimental results showed that the construction of heterostructure greatly improved the conductivity and lithium ion adsorption energy of the material, leading to remarkable capacity, excellent performance at high current density, and remarkable cyclic stability of the battery.
ACS APPLIED MATERIALS & INTERFACES
(2023)
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, Analytical
Qingshan Dai, Cuiping Gu, Yayun Xu, Yang Zhang, Yong Hong, Sang Woo Joo, Jiarui Huang
Summary: In this study, hollow SnO2@C nanoboxes were successfully prepared using a self-sacrificing template method, demonstrating excellent cycling stability and rate performance.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Engineering, Multidisciplinary
Kaixiang Chen, Run Huang, Fengling Gu, Yan Du, Yonghai Song
Summary: Co3O4 nanomaterials and N-doped carbon nanobubble film composites were successfully prepared by using COFs as templates, showing good lithium storage ability and cycle stability. The combination of CNBF and H-Co3O4 provides a new guide for the preparation of novel metal oxides and carbon composites.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Zhitong Li, Jiajin Nie, Jian Zhao, Jing Wang, Xiaoxin Feng, Shaowei Yao
Summary: Bimetal oxides consisting of ZnO, Co3O4, and carbon displayed excellent lithium storage performances as anode materials in lithium ion batteries. The hollow dodecahedrons structure and the synergistic effect of the multicomponent were crucial for the outstanding performance of ZnO/Co3O4/C as an anode material for LIBs.
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)