Article
Chemistry, Physical
Fitri Nur Indah Sari, Kuang-Cheng Lin, Jyh-Ming Ting
Summary: In this study, ternary metal hydroxide nanorods were grown on Ni foam using a facile hydrothermal method for novel electrode applications in pseudocapacitors. The resulting core-shelled structure exhibited excellent electrochemical performance, including high specific capacitance, retention, and cycling stability. Furthermore, when evaluated as a positive electrode in an asymmetric supercapacitor, the core-shelled structure demonstrated outstanding energy density and cycling stability.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Seungyong Eom, Jinjoo Jung, Do Hyung Kim
Summary: Crystalline Ni@Ni(OH)(2) (cNNH) and Co-doped cNNH structures were synthesized using a modified chemical reduction method and simple one-pot hydrothermal synthesis. The presence or absence of each reagent was investigated for its effect on the synthesis of the nanostructures. Both nanostructures consisted of a Ni core and Ni(OH)(2) shell layer (approximately 5 nm). Co-doping influenced the morphology and particle agglomeration of cNNH. Co-doped cNNH exhibited higher specific capacitance (1238 F g(-1)) and capacitance retention (76%) compared to cNNH, attributed to reduced path length and increased conductivity due to Co ion substitution. The reported synthesis method and electrochemical behaviors suggest the potential of cNNH and Co-doped cNNH as electrochemically active materials for supercapacitor applications.
Article
Chemistry, Physical
Xiaoyuan Shi, Ting Deng, Guangshan Zhu
Summary: By efficiently compositing cobalt hydroxide and Ni-based MOF, a vertically oriented Ni-MOF@Co(OH)(2) array with high specific capacitance is obtained, leading to the assembly of a high-performance hybrid supercapacitor.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Environmental
Feng Zhao, Donghui Zheng, Yang Liu, Fengda Pan, Qibo Deng, Chunling Qin, Yongyan Li, Zhifeng Wang
Summary: A flexible bimetallic electrode with a novel interconnected hierarchically porous network was successfully synthesized, improving the reaction kinetics and electrochemical performance of the active materials. The electrode showed higher specific capacitance and wider voltage window, leading to the assembly of high energy density all-solid-state symmetric supercapacitors with potential applications in wearable fields.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Miao Du, Weimin Xia, Zhichao Jiao, Yuanqing Chen, Zejin Wang, Yefan Deng, Ting Wang, Wei Zhong, Mengmeng Gu, Xiaoxuan Zhang, Cheng Wang
Summary: This paper presents the rational design and synthesis of a self-supported tree-like (Ni,Co)Se-2/Ni(OH)(2) heterogeneous nanoarray on carbon cloth (CC) as electrode materials for supercapacitors. The composite exhibits superior electrochemical performance, including high capacity, outstanding rate capability, and long cycling stability. Additionally, a flexible hybrid supercapacitor (HSC) fabricated with (Ni,Co)Se-2/Ni(OH)(2) and activated carbon (AC) shows satisfactory energy density.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Yawei Yu, Jiangchuan Liu, Yanling Zhang, Kefan Song, Xiaohui Hu, Yunfeng Zhu, Xiulan Hu
Summary: Ni-based hydroxides with Co and Mn co-substitution show enhanced capacity and stability. The enhanced performance is attributed to low deprotonation energy and facile electron transport. Ni-Zn battery and alkaline hybrid supercapacitor with (Ni0.8Co0.1Mn0.1)(OH)(2) as positive electrode achieve high energy density.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Atefeh Sharifi, Majid Arvand, Samaneh Daneshvar
Summary: Wire-shaped supercapacitors have gained attention for their small size, light weight, and flexibility. This research successfully synthesized Co(OH)(2)@Ni(OH)(2) nanosheets on a 3D-Ni film-coated Ni wire, showing outstanding supercapacitive behavior with high specific capacitance and excellent cycle performance. The unique design opens up new possibilities for fiber-shaped energy storage devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Xixi Zhang, Guangmeng Qu, Zonghua Wang, Guotao Xiang, Shuhua Hao, Xiaoke Wang, Xijin Xu, Wenxuan Ma, Gang Zhao
Summary: A multistep ion exchange strategy was proposed to synthesize Ni-Co-S and Co(OH)(2) hybrid nanomaterials, exhibiting outstanding electrochemical performance with ultra-high specific capacity, superior capacitance retention rate, and long operating lifespan.
CHINESE CHEMICAL LETTERS
(2021)
Article
Electrochemistry
Chen Hao, Yaning Guo, Wenting Ren, Xiaohong Wang, Linli Zhu, Xiaokun Wang, Jingbo Wu
Summary: A ternary Ni(OH)(2)/Co(OH)(2)/Mg(OH)(2) with rod-like structure was successfully synthesized via the seed method and the solvothermal method. The NCM-2 (Ni(OH)(2)/Co(OH)2/Mg(OH)(2)-2) with a load to template mass ratio of 1:1 exhibited the best electrochemical characteristics, including a specific capacity of 666.8 C g(-1) at 1 A g(-1) and a cyclic stability of 92.68% after 5000 cycles. Furthermore, when NCM-2 was used as the positive electrode and AC as the negative electrode in a supercapacitor, it showed a specific capacity of 214 C g(-1) at 1 A g(-1) and an energy density of 55.3 Wh kg(-1) at a power density of 930.2 Wh kg(-1). The NCM-2//AC hybrid supercapacitor also demonstrated practical application value by powering four different colors of LEDs.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Tuoping Hu, Lingling Gao, Wendi Zhou, Jie Zhang
Summary: A porous petal-like 3D metal-organic framework was synthesized and further used to prepare a Ni(OH)2-coated composite, which showed enhanced electrochemical performance and cyclic stability through electrochemical measurements.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Inorganic & Nuclear
Xin Dong, Mengtao Wang, Liqing He, Pu Hu, Heng Wang, Zhanhui Zhang, Zhiliang Huang, Chaoqun Shang
Summary: The modification of carbon cloth with Co(OH)2 nanoflakes improves the electrochemical performance of Co-Ni-S for higher specific capacitance.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Leqiu He, Yan Wang, Yajie Guo, Guobing Li, Xubin Zhang, Wangfeng Cai
Summary: In this study, a core-shell nanostructure electrode consisting of NiSe nanorods and Ni(OH)(2) nanosheets was successfully fabricated using a one-step hydrothermal process and electrodeposition. The material showed excellent energy and power densities, indicating its great potential as a battery-type electrode in energy storage systems.
Article
Nanoscience & Nanotechnology
Jiahao Zhang, Zizhun Wang, Ting Deng, Wei Zhang
Summary: Enhancing the conductivity of MOF by electrochemically depositing Ni(OH)(2) on carbon nanowalls leads to significantly improved electrochemical performance, resulting in a high-capacitance vertically oriented MOF sheets with promising results for the fabrication of asymmetric supercapacitors.
Article
Chemistry, Physical
Yu Lu, Yaohua Qin, Mingyue Chen, Gaofu Liu, Pengcheng Qi, Hao Wu, Yiwen Tang
Summary: In this study, a three-phase hierarchical nanostructure electrode was successfully designed and constructed using a facile one-pot hydrothermal strategy. The electrode exhibited remarkable electrochemical behavior, demonstrating the possibility and effectiveness of fabricating multi-dimensional and multi-phase composites for high-performance energy storage devices.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Shanshan Ding, Jian An, Yang Gao, Dong Ding, Xuanchen Lu, Lijun Zhao
Summary: Understanding the relationship between electrode morphology and electrochemical properties is crucial for the construction of high-performance supercapacitors. In this study, a facile in situ hydrothermal method was developed to synthesize a self-supported Cu/Ni-Co(OH)2/Co4S3 electrode, which exhibited significantly improved performance due to its enhanced electron transportation ability and low resistance in electron and ion transportation. The relationship between morphology changes and electrochemical properties was further explored, providing insights into the rational design of electrode materials for supercapacitors.
CHEMICAL ENGINEERING JOURNAL
(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)