Article
Chemistry, Physical
Min Li, Yunyun Luo, Chen Jia, Qiankun Zhang, Guoxi Luo, Libo Zhao, Rabah Boukherroub, Zhuangde Jiang
Summary: In this study, bimetal nickel-cobalt phosphate nanostructures were successfully synthesized on nickel foam for hybrid supercapacitors by a facile one-step electrodeposition method. The optimized NiCoP/NF2 electrode exhibited excellent capacitive performance with high specific capacity, good rate performance, and high coulombic efficiency. The proposed electrodeposition synthesis process and the prepared NiCoP composites show great potential for applications in energy storage technology.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Alberto Adan-Mas, Jacob Olchowka, Lydie Bourgeois, Philippe Legros, Patrizia Paradiso, Fatima Montemor, Liliane Guerlou-Demourgues
Summary: Nickel-cobalt oxyhydroxide has been delaminated by tetrabutylammonium intercalation, which increases the number of electrochemically active sites and enhances the material's capacity. This technique shows promise for improving the performance of electrode materials for electrochemical energy storage.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Electrochemistry
Lianjie Huang, Hao Huang, Wei Guo, Shuang Wang
Summary: In this study, a novel urchin-like zinc-nickel-cobalt oxide (ZNCO) microsphere with a spinel cubic structure was prepared through a simple hydrothermal method. The ZNCO exhibited larger surface areas and improved electrochemical performance, showing high specific capacity, rate performance, and cycling stability. The study provides guidance on designing ternary transition metal oxides for energy conversion and storage applications.
ELECTROCHIMICA ACTA
(2022)
Article
Materials Science, Multidisciplinary
Irum Shaheen, Khuram Shahzad Ahmad, Camila Zequine, Ram K. Gupta, Andrew G. Thomas, Anjum Qureshi, Mohammad Azad Malik, Javed H. Niazi, Saud Alarifi
Summary: Advancements in metal oxides-based electrode materials for supercapacitors have recently gained significant attention in research. The doping of Co3O4 nanoparticles with PdO/Pd using an ecofriendly extracted foliar reducing and stabilizing agent has been analyzed. The synthesized Co3O4:PdO/Pd nanocomposite exhibits a multifaceted phase composition with improved electrochemical performance. The results highlight the potential of these functionalized nanocomposites as promising electrode materials for supercapacitor applications.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Santa Islam, Md Mithu Mia, Syed Shaheen Shah, Shamsun Naher, M. Nasiruzzaman Shaikh, Md Abdul Aziz, A. J. Saleh Ahammad
Summary: With their high specific capacitance, high power density, and longer cycle life, supercapacitors have become one of the most promising energy storage devices. Recent research has focused on improving the performance of supercapacitors by altering electrolytes, electrode materials, current collectors, experimental temperatures, and film thickness. The significant demand for these devices in the fast-growing generation is reflected by the large number of published papers. This review provides a comprehensive understanding of electrode materials loaded on various conductive substrates by electrochemical deposition, paving the way for future research in this field.
Article
Nanoscience & Nanotechnology
Zhenyu Xie, Daping Qiu, Jiannian Xia, Jinying Wei, Min Li, Feng Wang, Ru Yang
Summary: A hollow biphase and bimetal cobalt nickel perselenide with a unique structure was synthesized by regulating the Ni/Co ratios, leading to improved electron-transmission capability and accelerated ion/electron transfer rate. This material achieved high specific capacitance and discharge rate capability, making it a promising candidate for high-performance hybrid supercapacitors.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Energy & Fuels
Shaik Junied Arbaz, S. Chandra Sekhar, Bhimanaboina Ramulu, Jae Su Yu
Summary: The fabrication of NiCo2O4 zigzag-patterned vertical nanosheet arrays using a one-step solvothermal method resulted in electrodes with high electrochemical performance, especially when prepared with an equal volume proportion of ethanol and water solvents. Furthermore, a hybrid supercapacitor device using these nanosheet arrays demonstrated remarkable energy and power densities, showcasing their practical applicability in powering devices like light-emitting diodes and motor fans.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Review
Chemistry, Inorganic & Nuclear
Manickam Minakshi, Kethaki Wickramaarachchi
Summary: An electrochemical asymmetric capacitor is a device with different electrodes that has high power and long cycle life. By using novel materials processing, the energy density and power density of the device can be improved. Manganese di-oxide (MnO2) and activated carbon (AC) are paired as positive and negative electrodes, and simple modifications to the synthesis can catalyze changes in storage properties.
PROGRESS IN SOLID STATE CHEMISTRY
(2023)
Article
Chemistry, Physical
Shuai Chen, Qiucheng Xu, Ling Chen, Yanjie Hu, Hao Jiang, Chunzhong Li
Summary: In this study, localized defect engineering was used to improve the performance of Mo-doped V2O3 nanoarrays, reducing the energy barrier of V-ion redox reactions and broadening the work potential window, greatly increasing the energy density of aqueous supercapacitors.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Badr A. Mahmoud, Abdulmajid A. Mirghni, Kabir O. Oyedotun, Oladepo Fasakin, Ncholu Manyala
Summary: The NH4(NiCo)PO4•H2O/GF composite exhibited improved electrochemical performance in hybrid supercapacitors, with higher specific capacity and specific energy. The device showed high columbic efficiency and self-discharge efficiency in long-term stability tests.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Environmental
Jianghang Cao, Yuzhen Hu, Yuying Zhu, Haijie Cao, Meiqiang Fan, Chenghao Huang, Kangying Shu, Maoxia He, Hai Chao Chen
Summary: By controlling the manganese composition in nickel-cobalt-manganese sulfide, the electrons of cobalt can be activated and the affinity with electrolyte ions can be enhanced, leading to improved electrochemical activity and rate performance. Furthermore, the manganese and nickel compositions greatly enhance the charge storage activity of the sulfide, while the nickel composition improves the rate performance.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Electrochemistry
Jing-Feng Hou, Jian-Fei Gao, Ling-Bin Kong
Summary: Synthesis of active sites-rich Ni3V2O8@Co-B nanocomposites has overcome the issues of capacity decay and low electronic conductivity in nickel-based electrodes, showing great potential for high-performance energy storage materials.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Sk Tarik Aziz, Sushil Kumar, Sk Riyajuddin, Kaushik Ghosh, Gilbert Daniel Nessim, Deepak P. Dubal
Summary: This article discusses the features of transition-metal phosphides (TMPs) as the positive electrode in hybrid supercapacitors (HSC) and their performance in improving energy density and cycling stability. By adjusting the rational heterostructures and composite morphologies, the performance of HSCs can be enhanced.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Biophysics
Anshun Zhao, Tao Lin, Yun Xu, Weiguo Zhang, Muhammad Asif, Yimin Sun, Fei Xiao
Summary: This study developed an integrated electrochemical microfluidic sensing platform using freestanding graphene fiber microelectrode modified with nickel-cobalt phosphide nanosheet arrays, which shows excellent sensing performances towards neurotransmitter dopamine and can be used for sensitive analysis in human serum and urine samples.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Engineering, Environmental
Xing Chen, Qun Liu, Tian Bai, Weiguo Wang, Faliang He, Meidan Ye
Summary: The review highlights the advantages, applications, and design methods of nickel and cobalt sulfides as electrode materials for EESDs, with significant progress in nanostructures and composite materials. However, challenges still exist that need to be addressed for their optimal use in the future.
CHEMICAL ENGINEERING JOURNAL
(2021)
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)