Article
Chemistry, Multidisciplinary
Changli Wang, Xinran Li, Wenping Yang, Yuxia Xu, Huan Pang
Summary: In this study, Co-MOF-74 microflower with various morphologies was successfully prepared by modulating the polarity of the solvent. The energy storage performance of Co-MOF-74 microflower was significantly improved due to the preferred crystal orientation, facilitating electronic interfacial exchange and ion transfer during electrochemical reactions.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Physical
Yujuan Cao, Ning Wu, Fan Yang, Meng Yang, Tingting Zhang, Hao Guo, Wu Yang
Summary: This study successfully synthesized NiCo-MOF-74/T-PPy-m composite materials with different amounts of polypyrrole nanotubes. The NiCo-MOF-74(1)/T-PPy-10 composite exhibited the highest specific capacitance, excellent cyclic stability, and good rate performance. The interwoven structure enhanced the conductivity of the composite and alleviated stress changes caused by charge/discharge cycles.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Energy & Fuels
Xiaolin Sun, Kai Zhao, Hucheng Fu, Hanwen Guo, Jun Shen, Fuhao Jin, Lei Wang, Zihao Wang, Liang Cui, Fengyu Quan, Jingquan Liu
Summary: Controllable nanoarchitecture arrays of MnSe2 nanorods over NiCo2Se4 nanosheets were synthesized on nickel foam using a hydrothermal process. The MnSe2@NiCo2Se4-2 electrode exhibited remarkable capacitance and superior cycle stability. An asymmetric supercapacitor was developed using the MnSe2@NiCo2Se4-2 electrode and activated carbon materials, which showed high energy density. These results suggest that the MnSe2@NiCo2Se4 electrode has great potential in supercapacitors.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Analytical
Wenhu Yang, Hao Guo, Rui Xue, Xin Zhao, Qixia Guan, Tian Fan, Longwen Zhang, Fan Yang, Wu Yang
Summary: Selenides derived from MOFs have attracted attention for their excellent electrochemical properties. CNT/MOF-74 composites were successfully synthesized using a simple hydrothermal method, showing promising potential for applications in electrochemical capacitor electrodes and electrochemical sensors.
MICROCHEMICAL JOURNAL
(2021)
Article
Electrochemistry
Batoul Hosseinzadeh, Bhawna Nagar, Raul Benages-Vilau, Pedro Gomez-Romero, Sayed Habib Kazemi
Summary: By pyrolysis of a simple Cobalt Metal Organic Framework (MOF), a high-performance hybrid composite electrode with superb capacity and power density was successfully synthesized. An asymmetric supercapacitor (ASC) fabricated using this composite material showed excellent energy density and power density performance.
ELECTROCHIMICA ACTA
(2021)
Review
Chemistry, Multidisciplinary
Guilin Tang, Jing Liang, Wei Wu
Summary: This review summarizes the recent advancements in electrode materials based on transition metal selenides for supercapacitor applications. Various material modification strategies and the progress of multifunctional supercapacitors are discussed.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Energy & Fuels
Xiaoqin Min, Xiaoyun Lin, Junhui Feng, Yongnian Ni
Summary: In order to alleviate the problem of resource shortage, it is necessary to develop efficient and environmentally friendly energy storage equipment. In this study, a novel MnSe2/Co0.85Se (MCSe) electrode was successfully prepared using a simple, green and environmentally friendly electrodeposition method. The MCSe electrode exhibited good electrochemical performance, and possesses a high specific capacity (Cs) of 1380C/g at a current density (CD) of 1 A/g. An asymmetric supercapacitor (ASC) assembled using a positive electrode (the MCSe electrode) and a negative electrode (active carbon (AC) electrode) delivered a high specific energy density (Es) of 49.63 Wh/kg at a specific power density (Ps) of 750 W/kg. Hence, this study provides a new approach for designing metal selenides for energy storage and conversion.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Inorganic & Nuclear
Qihang Chen, Wenna Zhao, Zihao Huang, Guochang Li, Kai Tao, Lei Han
Summary: Binary transition metal sulfides are promising materials for supercapacitors due to their rich electrochemically active sites and superior electrochemical performance. Metal-organic frameworks (MOFs) were used as sacrificial templates in the synthesis of CoNi2S4 with rod-like morphology, which exhibited excellent electrochemical properties.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Kolleboyina Jayaramulu, Michael Horn, Andreas Schneemann, Haneesh Saini, Aristides Bakandritsos, Vaclav Ranc, Martin Petr, Vitalie Stavila, Chandrabhas Narayana, Blazej Scheibe, Stepan Kment, Michal Otyepka, Nunzio Motta, Deepak Dubal, Radek Zboril, Roland A. Fischer
Summary: The study demonstrates the covalent attachment of an amine functionalized metal-organic framework to carboxylate functionalized graphene, resulting in a hybrid material with high capacitance and cycling stability. An asymmetric supercapacitor was successfully constructed using this hybrid material, showing comparable performance to commercial devices such as Pb-acid and Ni/MH batteries. The amide linkage plays a key role in forming a p-conjugated structure, facilitating charge transfer and enhancing capacitance and cycling stability.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Lili Wang, Yuying Yang, Bing Wang, Cunpeng Duan, Jiahui Li, Linlin Zheng, Jiahao Li, Zhen Yin
Summary: This study successfully prepared bifunctional electrode materials with a three-dimensional multistage structure, exhibiting excellent electrochemical performance and high energy density. The potential applications in supercapacitors and glucose sensors are promising.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Zhiqiang Liu, Yanling Qiu, Colin J. Barrow, Joselito M. Razal, Wenrong Yang, Jingquan Liu
Summary: In this study, an N-doped porous nanocarbon-coated Co3Se4 quantum dots composite was prepared and used as the cathode material for supercapacitors. The composite exhibited excellent electrochemical performance and cycle stability, suggesting its great potential for various applications.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Energy & Fuels
Jeffrey Joseph John Jeya Kamaraj, Padmanaban Annamalai, Sakthivel Perumal, Senthil Pandian Muthu, Ramasamy Perumalsamy
Summary: In this study, cation-substituted NiMoSe2 nanoparticles were prepared and utilized as pseudocapacitive electrodes for hybrid supercapacitors, showing significantly improved performance and stability. The results demonstrate the potential application of metal selenides as electrode materials for supercapacitors, and cation substitution as an effective strategy for performance improvement.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
T. B. Naveen, D. Durgalakshmi, S. Balakumar, R. Ajay Rakkesh
Summary: This study presents a chemical transformation process that converts nickel-based metal-organic frameworks into binary metal-organic frameworks by introducing cobalt metal ions. The resulting NiCo-BDC hierarchical nanostructure exhibits higher oxidation states and demonstrates an impressive capacitance of 1431 F g-1. Furthermore, the device based on this material shows exceptional capacity retention over 3000 cycles. The fabricated hierarchical nanostructure provides multiple pathways for electron transport, resulting in increased capacitance and superior rate performance.
CHEMICAL COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Yakun Deng, Youjun Zhao, Kangliang Peng, Lixin Yu
Summary: A one-step hydrothermal method was used to successfully prepare MoO2/MoS2 nanocomposites with excellent electrochemical performance. By adjusting the ratio of Mo to S source, materials with different compositions and structures were obtained. The resulting nanocomposites exhibited high specific capacitance and good cycle performance, making them promising for advanced energy storage applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Energy & Fuels
Sadananda Muduli, Subir K. Pati, Smrutirekha Swain, Surendra K. Martha
Summary: The MoO3-ZnO composite material exhibits good specific capacitance and cycling stability in 1 M Na2SO4, making it a suitable electrode material for supercapacitors.
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)