Article
Energy & Fuels
Yu-Cheng Hsiao, Chen-Hao Liao, Chia-Shuo Hsu, Sibidou Yougbar, Lu-Yin Lin, Yung-Fu Wu
Summary: In this study, manganese cobalt layered double hydroxide (MnCo-LDH) was incorporated into sulfur-doped NiCo-LDH (S-NiCo-LDH) on a nickel foam (NF) substrate via a hydrothermal process. The resulting composite exhibited a favorable morphology with high specific surface area and well-established pore structure, leading to a specific capacitance of 1581.3 F/g. When incorporated into a battery super-capacitor hybrid, the MnCo-LDH/S-NiCo-LDH composite demonstrated a wide potential window, high energy density, and excellent cyclic stability.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Zhiqiang Liu, Ying Liu, Yuxue Zhong, Liang Cui, Wenrong Yang, Joselito M. Razal, Colin J. Barrow, Jingquan Liu
Summary: Hierarchical MgCo2O4@CoFe-LDH core-shell nanowire arrays on Ni foam were synthesized via hydrothermal and calcination methods, showing excellent specific capacitance and cycling stability. These materials have great potential for application in energy storage devices.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Multidisciplinary
Lican Zhao, Fanbin Meng, Wei Zhang
Summary: This study focuses on the rational design and synthesis of electrode materials with high energy density and porous micro-nano structure. A nickel-cobalt-manganese hydroxide micro-flower structure was successfully constructed using a one-pot hydrothermal method. The resulting material exhibited superior capacitance and rate performance, making it highly suitable for applications in supercapacitors.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Xiang-Hui Yu, Zi-Yan Zhao, Jin-Long Yi, Shuai Liu, Ru-Liang Zhang, Feng-Yun Wang, Lei Liu
Summary: Cobalt-nickel double hydroxide/nitrogen-doped hollow carbon spheres with a hollow structure were successfully fabricated via a simple deposition method. The hybrid material exhibited excellent cycle stability and electrochemical performance, with the electrode containing 15% cobalt content showing the highest specific capacity and rate capacity. Furthermore, the hybrid material displayed superior energy density and cycle stability in an all-solid-state asymmetric supercapacitor.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Prakash Chandra Lohani, Arjun Prasad Tiwari, Kisan Chhetri, Alagan Muthurasu, Bipeen Dahal, Su-Hyeong Chae, Tae Hoon Ko, Jun Youb Lee, Yong Sik Chung, Hak Yong Kim
Summary: In this work, a transition metal-based electrode material with high energy storage capabilities was designed. The material is composed of thin layered double hydroxide (LDH) nanosheets assembled onto polypyrrole tunnels on a carbon cloth. The resulting electrode exhibits excellent specific capacity, rate capability, and cyclic stability, which can be attributed to the strategic organization of the materials. Additionally, an asymmetric supercapacitor device assembled with this electrode material and vanadium phosphate-incorporated carbon nanofiber electrodes shows high specific energy density and power density.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Yulian Chen, Yinhui Ouyang, Juan Yang, Liping Zheng, Baobao Chang, Chun Wu, Xiaowei Guo, Gairong Chen, Xianyou Wang
Summary: The ternary LDHs containing Ni, Co, and Al exhibit excellent electrochemical performance, especially NiCo2Al0.5-LDHs with high specific capacitance and good capacitance retention. Moreover, the asymmetric supercapacitor assembled with NiCo2Al0.5-LDHs cathode and activated carbon anode shows high energy density and remarkable cycling stability.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Qindan Xiao, Yuan Yuan, Juncheng Zhu, Zhicheng Shi, Zhong Li, Jiliang Zhu
Summary: A facile chemical co-precipitation method is reported for the preparation of nickel-cobalt layered double hydroxide (Ni, Co-LDH). The controlled introduction of carbonate ions (CO32-) through the addition of NaHCO3 causes the nanosheet structure to bend and inter-connect, increasing the contact area between the electrode and the electrolyte and enhancing the energy storage characteristics. Appropriate CO32- doping effectively increases the specific capacity and rate capability of Ni, Co-LDH.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Yung-Fu Wu, Yu-Cheng Hsiao, Chen-Hao Liao, Chia-Shuo Hsu, Sibidou Yougbare, Lu-Yin Lin
Summary: In this study, sulfur-doped nickel and cobalt layered double hydroxide and polypyrrole nanotubes composites were successfully designed as efficient active materials for battery supercapacitors. The optimized design achieved high specific capacitance and energy density, as well as good cycle stability and Coulombic efficiency.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Yang Li, Ziyang Luo, Huizhen Qin, Shunfei Liang, Lingyun Chen, Huayu Wang, Chenglan Zhao, Shaowei Chen
Summary: In this study, a cobalt-nickel layered hybrid organic-inorganic LHS intercalated with benzoate anions was synthesized and showed high performance as electrode materials for HSCs. The synergistic interactions of anions and multi-metallic components in B-CoNi-LHSs resulted in high specific capacity, excellent rate performance, and outstanding cycling performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Feifei Xiang, Yingxia Dong, Xiaoqiu Yue, Qiaoji Zheng, Dunmin Lin
Summary: The CoP-Mn3P nanoclusters with heterogeneous interfaces were successfully synthesized to improve electron transfer rate and conductivity. The unique flake structure provided more electrochemical active sites, leading to exceptional capacity and cycle lifespan for the electrode, while the ASC device assembled with CoP/Mn3P electrode exhibited ultrahigh energy density and long cycle retention rate.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Energy & Fuels
Kailin Li, Changqing Yin, Xingjian Dai, Jiayun Zhang, Shuang Yi, Jinsong Rao, Yuxin Zhang
Summary: Layered transition metal hydroxide is a potential energy storage material with large specific surface area, adjustable composition, and abundant active components. The performance of the binder-free electrodes in the study showed that the ternary LDH electrode had better electrochemical properties than the binary one, and the partially sulfide Ni1Co2S/Ni electrode exhibited the optimal performance. The hybrid supercapacitor device assembled with Ni1Co2S as the positive electrode and active graphene as the negative electrode displayed high energy density, good rate capability, and cycling stability.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Lingpeng Kong, Shiyuan Dang, Bingxue Yao, Yan Li, Bin Chen, Xue Hua, Guangyan Tian
Summary: Transition metal silicates have been explored as potential electrode materials for rechargeable batteries and supercapacitors. In this study, a bimetallic doping modulation strategy was employed to enhance the electrochemical properties of manganese cobalt silicate. The resulting material exhibited higher specific capacitance and better cycling performance compared to its monometallic counterparts. Furthermore, a hybrid supercapacitor device combining the manganese cobalt silicate with activated carbon showed high mass specific capacitance and energy density.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Xu Li, Shuangyi Liu, Sihan Bai, Zhenhu Li, Jun Shen
Summary: By synthesizing citrate-intercalated Ni-Co LDH electrode materials, this study has enhanced the utilization and stability of Ni-Co LDHs, demonstrating the high-performance potential for supercapacitors.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Physical
Xiang Lv, Wanxia Huang, Qiwu Shi, Lu Tang, Jibin Tang
Summary: Vanadate nanomaterials with unique amorphous phase possess more active sites and isotropic nature, which is in favor of facilitating the diffusion of electrolyte ions into the electrode materials during the charge/discharge process and providing high capacitance for samples. The amorphous NiCozVxOy (NCVO) nanosphere prepared using ethanol as the agent for assembly materials shows attractive electrochemical properties, delivering a high specific capacitance of 1449.3 F/g at 2 A/g and a high energy density of 45 Wh/kg. The NCVO also exhibits excellent rate capability and good capacitance retention of 91.4% after 2000 cycles, making it a potential candidate as energy storage materials for supercapacitors.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Multidisciplinary
Congcong Hou, Tingting Li, Zhiming Zhang, Chunrui Chang, Libao An
Summary: The nickel-cobalt layered double hydroxide/carbon nanotubes composites with 3D hollow nanocages structure exhibit excellent electrochemical performance, making them promising for supercapacitor applications.
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)