Article
Materials Science, Multidisciplinary
Yi-Fei Chen, Jia-Hong Li, Tian-Tian Liu, Si-Hang You, Peng Liu, Fu-Jin Li, Meng-Qi Gao, Shu-Guang Chen, Fei-Fei Zhang
Summary: NiFe LDHs have been deposited on carbon cloth using a simple electrodeposition method, forming a NiFe LDHs-NiFe alloy gradient hybrid coating. The electrode exhibits highly active bifunctional oxygen evolution and hydrogen evolution reactions. The NiFe alloy acts as a stable electron highway and skeleton bridge, leading to outstanding stability in overall water splitting.
Article
Chemistry, Physical
Xinrui Qiang, Chao Feng, Bingzhe Jia, Han Wang, Yan Wang, Xinming Wu
Summary: The same element heterojunction structure can effectively improve the energy density of the electrodes with its unique structural properties. In this study, a FeOOH/NiFe-LDHs heterojunction electrode achieved a specific capacitance of 4.34 F cm-2 at 2 mA cm-2 with a capacity retention of 95.67% after 6000 cycles. Additionally, a FeOOH@NiFe-LDHs//AC flexible supercapacitor device demonstrated a specific capacitance of 1.06 F cm-2 at 2 mA cm-2 and an impressive energy density of 0.47 mWh cm-2 at 1.78 mW cm-2, surpassing previous reports.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Shang-Bing Wang, Yong-Sen Xia, Zhi-Feng Xin, Li-Xin Xu
Summary: A novel NiFe-LDHs@gamma-MnOOH core-shell catalyst with excellent oxygen evolution reaction (OER) activity and overall water splitting performance in alkaline media was fabricated in this study.
CATALYSIS COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Oleg Lupan, Nicolae Magariu, Rasoul Khaledialidusti, Abhishek Kumar Mishra, Sandra Hansen, Helge Krueger, Vasile Postica, Helge Heinrich, Bruno Viana, Luis Katsuya Ono, Beatriz Roldan Cuenya, Lee Chow, Rainer Adelung, Thierry Pauporte
Summary: A comparative investigation was conducted on the influence of post-electroplating treatments on the gas detecting performances of single ZnO nanorods/nanowires. Different treatments were found to enhance material properties, with higher temperature synthesis resulting in increased gas response to H-2 gas. Thermal annealing and hydrothermal treatment were shown to further increase sensor response, indicating potential for high-performance devices in flexible and wearable electronics.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Honglong Ning, Junlong Chen, Zhihang Li, Zhuohui Xu, Rihui Yao, Hongfu Liang, Taijiang Liu, Guoping Su, Dongxiang Luo, Junbiao Peng
Summary: The study investigated the use of electrodepositing Al2O3 on AgNWs surface to improve the stability of flexible transparent electrodes. Results showed that the optimal transmittance and FoM of the AgNW-Al2O3 composite film were achieved at 70℃ for 40 seconds, demonstrating the potential for high stability in flexible transparent electrodes.
Article
Energy & Fuels
Xiaoyuan Liang, Hang He, Xijia Yang, Wei Lu, Liying Wang, Xuesong Li
Summary: A fully flexible, lightweight, and high-performance supercapacitor was designed by growing NiCo2S4 nanowire on activated carbon cloth using a simple two-step hydrothermal method. The electrode exhibited high area capacitance and good capacitance retention after numerous cycles. Additionally, a flexible asymmetric supercapacitor using the designed electrode and cathode displayed high specific capacitance, energy density, and power density, along with good capacitance retention, indicating the feasibility for wearable energy storage devices.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Xiujuan Wu, Hongzhen Liu, Fusheng Li, Liangjie Lu, Weijia Li, Lu Feng, Licheng Sun
Summary: Through comparing the properties of heteroelement-doped catalysts, some regular results can be found: (1) The introduction of P/S/Se can optimize the redox behaviors of Ni species, which is conducive to regulating adsorption energy of intermediates and the formation of high-valent active sites; (2) The specific area of catalysts was expanded after heteroelements doping, ensuring a more favorable structure for heterogeneous catalysis; (3) All P/S/Se-doped catalysts showed better activities when compared to the original NiFe LDHs in alkaline solutions, and the catalysts doped with S showed the best performance (Se < P < S).
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Chemical
Dan Yang, Le Wang, Yanfei Li, Wen Song, Xuguang Li, Tao Yan, Liangguo Yan
Summary: This study investigates the efficient removal of high concentrations of aqueous hexavalent chromium (Cr(VI)) using capacitive deionization (CDI) technology, through the synthesis of a pseudocapacitive NiFe-layered double hydroxide/polypyrrole (NiFe-LDH/PPy) electrode. The results demonstrate the potential of NiFe/PPy for efficient Cr(VI) removal, making it a promising approach for wastewater treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Getabalew Shifera Weldegrum, Pragya Singh, Bohr-Ran Huang, Ting-Yen Chiang, Kuan-Wei Tseng, Chun-Ju Yu, Chen Ji, Jinn P. Chu
Summary: The study successfully fabricated ZnO-NWs/MeNTA structure for large-scale production of highly dense laterally and vertically aligned ZnO nanowires with good optical and crystal structural properties. These nanowires can be applied in optoelectronics, sensors, piezoelectric devices, solar cells, and battery applications.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Tamene Tamiru Debelo, Masaki Ujihara
Summary: Nanocomposite electrodes consisting of manganese oxides and polypyrrole were synthesized through a two-step electrochemical process. The nanocomposite electrodes exhibited high specific capacitance and stability, showing promising electrochemical performance.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Dan Yang, Xuguang Li, Yanfei Li, Wen Song, Tao Yan, Yu Cui, Liangguo Yan
Summary: NiFe-LDH and NiFe/MoS2 were synthesized via a hydrothermal method to decontaminate wastewater contaminated with high concentrations of Cr(VI). The addition of MoS2 improved the conductivity, capacitance reversibility, charge efficiency, coulombic efficiency, and stability of NiFe/MoS2. The CDI process using NiFe/MoS2 and activated carbon as the anode and cathode achieved a deionization capacity of 49.71 mg/g and a removal ratio of 99.42% for Cr(VI) at 1.2 V and 20 mL/min. The Langmuir model accurately described the isothermal data, with a theoretical maximum deionization capacity of NiFe/MoS2 for Cr(VI) being 106.2 mg/g. The interaction mechanisms included electrostatic attraction, surface complexation, and reduction. These findings suggest the practical application potential of NiFe/MoS2 in Cr(VI) wastewater treatment.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Jun-jie Zhang, Ting-an Zhang, Sen Feng
Summary: Ni-Al LDHs were electrodeposited from a NiCl2-AlCl3 solution, with variations in the initial Al content in the electrolyte affecting the preferred orientations, crystallinity, and interlayer spacing of the resulting materials. The presence of higher Al content led to decreased electrodeposition yield and current efficiency, attributed to increased Al content and diffusion of complex ions. The electrodeposition pattern evolved from in-situ to off in-situ as the initial Al content in the electrolyte changed.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Engineering, Environmental
Tianbao Liu, Hanfeng Zhou, Guoxiong Zhong, Xiuling Yan, Xintai Su, Zhang Lin
Summary: The study demonstrates that electroplating sludges of specific composition can be used to synthesize layered double hydroxide materials for energy applications, showcasing good electrochemical energy storage performance. The unique composition and structure of the sludges contribute to their promising supercapacitor performance.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Cheng-Fei Li, Ling-Jie Xie, Jia-Wei Zhao, Lin-Fei Gu, Jin-Qi Wu, Gao-Ren Li
Summary: In this study, flower-like nanosheets with Fe2O3/NiFe-layered double hydroxides (LDHs) heterointerfaces were fabricated, showing superior catalytic activity for OER at industrial grade current density. The research attributes the superior electrocatalytic performance to the optimized electronic configuration and promoted interfacial electron transfer of Fe2O3/NiFe-LDHs heterointerfaces.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Xiaohan Zhang, Mingqi Wang, Chun Hu, Tong Li, Xiutong Yan, Peng Zhang, Zhihong Chen
Summary: A novel WO3@NiFe-LDHs photoanode with enhanced PEC degradation performance was successfully synthesized by electrochemical depositing NiFe-LDHs nanosheets array on the surface of nanoplate WO3 photoanode. The NiFe-LDHs nanosheets formed a hetero-junction with WO3, providing mass transfer sites and improving charge separation. In addition, the NiFe-LDHs nanosheets captured TC, facilitating its degradation and enhancing the light absorbance of the photoanode.
APPLIED SURFACE SCIENCE
(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)