Article
Materials Science, Multidisciplinary
Yahui Mo, Juan Du, Haijun Lv, Yue Zhang, Aibing Chen
Summary: In this study, N-doped mesoporous carbon nanosheets were prepared using cheap mica powder as template and resorcinol-formaldehyde resin as carbon precursor. Ethyl orthosilicate was introduced as a porogen to increase mesopores and surface area, while ethylenediamine acted as a catalyst for hydrolysis and polymerization as well as a nitrogen dopant, resulting in improved electrochemical performance.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Biotechnology & Applied Microbiology
Erman Taer, Apriwandi Apriwandi, Bima Kumala Levanadea Dalimunthe, Rika Taslim
Summary: This study successfully utilized agricultural waste cassava petioles to produce rod-like mesoporous carbon materials with excellent performance in supercapacitor electrodes, including high specific surface area, maximum specific capacitance, and maximum energy density.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2021)
Article
Polymer Science
Xia Meng, Xiaohui Wang, Wei Li, Fangong Kong, Fengshan Zhang
Summary: In this study, FR was highlighted as a potential precursor for producing N-doped porous carbon materials (FRPCK-Urea) for supercapacitors. FRPCK-Urea showed a high specific surface area, hierarchical porous structure, and excellent capacitance retention and cycle durability, making it a potential electrode material for supercapacitors.
Article
Chemistry, Physical
Juan Du, Yue Zhang, Haijun Lv, Aibing Chen
Summary: The N/B-co-doped ordered mesoporous carbon spheres were developed using an ionothermal strategy, showing enhanced electrochemical performance and potential as novel electrode materials.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Anjitha Thadathil, Nayana Edavan Chathoth, Yahya A. Ismail, Padmesh Anjukandi, Pradeepan Periyat
Summary: In this study, a three-dimensional polyindole (PIN) gel without additives or cross-linkers was developed and demonstrated its potential as a supercapacitor. The PIN gel showed enhanced properties compared to conventionally synthesized PIN powder, and when combined with graphene, it yielded high-performance supercapacitor electrodes with improved rate capability and long-term stability.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Electrochemistry
Juan Du, Aibing Chen, Xueqing Gao, Senlin Hou
Summary: Designing stable and unique carbon nanostructures is crucial for improving supercapacitor performance, but there are still challenges in achieving excellent ion transportation, lasting capacitance activity, and high rate capability. In this study, a simple co-assembly method is developed to create carbon spheres with large mesopores (MCS). The MCS, obtained through the assembly of silica spheres and poly-2,6-diaminopyridine (PDAP), demonstrates enhanced electrochemical performance with high capacitance, long-term stability, and rate capability, making it a promising material for efficient energy storage.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Huaran Zhang, Zixu Wang, Xingxing Li, Mengxiang Zhu, Jinping Zhou
Summary: This study successfully prepared N, O co-doped hierarchical porous carbon material using chitin as a carbon source and KOH as an activator. The obtained material exhibited ultrahigh specific surface area and large pore volume, showing excellent electrochemical performance and making it an ideal material for high-performance supercapacitors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Yuanyuan Li, Lixue Gai, Guilin Song, Qingda An, Zuoyi Xiao, Shangru Zhai
Summary: CoS2/Cu2S embedded N/S co-doped mesh-like carbonaceous composites with enhanced electromagnetic wave absorbing performance were successfully prepared by freeze-drying and high-temperature carbonization using carboxymethyl cellulose hydrogel spheres as starting materials. The newly designed three-dimensional mesh-like structures embedded with CoS2 and Cu2S nanoparticles facilitate multiple reflections and scattering of electromagnetic waves, contributing to the enhancement of electron transport and magnetic coupling, thus improving the electromagnetic wave loss.
Article
Chemistry, Physical
Hui Wang, Yiwei Liu, Lirong Kong, Shihui Yin, Xiaoping Shen, Subramanian Premlatha
Summary: Layered nanomaterials with hierarchically porous structure have been found to have superior capacitive properties. In this research, polyaniline nanosheet assembled flowers were grown on carbon cloth through a simple repeated-deposition method. The affinity between the pre-loaded PANI and the new aniline monomer was found to be crucial for the formation of the product with nanosheet morphology.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Materials Science, Multidisciplinary
Zahra Norouzi, Seyed Heydar Mahmoudi Najafi, Sayed Ahmad Mozaffari
Summary: Silver-loaded carbon sphere-in-rod 3D architectures were synthesized in this study, showing improved electrical conductivity of the hybrid electrode and high specific capacitance with a wide operating potential window. The green, low-cost, and scalable approach of constructing a hybrid electrode material using saccharide and noble metal building blocks was demonstrated in this work.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Physical
Manrong Shen, Xiufang Lin, Wenhao Xi, Xiaojin Yin, Bifen Gao, Liwen He, Yun Zheng, Bizhou Lin
Summary: Rational design and facile preparation of Co@pNC, a mesoporous waffle-like N-doped carbon framework with embedded Co nanoparticles, exhibit excellent bifunctional ORR/OER electrocatalytic activity. The Co@pNC shows a half-wave potential of 0.85 V for ORR and a small potential gap of 0.70 V between ORR E1/2 and OER potential at 10 mA cm-2. The assembled battery using Co@pNC demonstrates high peak power density, energy density, and superb rate capability, highlighting the importance of a facile component and architecture strategy for high-performance carbon-based electrocatalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Energy & Fuels
Jing Li, Yongjin Zou, Cuili Xiang, Fen Xu, Lixian Sun, Bin Li, Jian Zhang
Summary: This study prepared nitrogen-doped porous carbon from Osmanthus as a raw material using a simple carbonization/activation method, showing a three-dimensional hierarchical porous structure with high specific surface area. The electrochemical performance of Osmanthus-derived carbon mainly relies on its microporous/mesoporous characteristics, exhibiting high specific capacitance and excellent cycling stability.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Yingjie Liu, Xiao Zhang, Katarzyna Matras-Postolek, Ping Yang
Summary: This study focuses on the preparation of N-doped mesoporous hollow carbon spheres coated with Ni2P nanosheets for high-performance supercapacitors, showcasing excellent electrochemical performance in terms of high specific capacitance and cycle stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Energy & Fuels
Haiyang Jia, Jingfang Zhu, Meng Zhang, Shijing Sang, Feng Hu, Fen Zhang
Summary: A nitrogen and fluorine co-doped porous carbon was prepared using polytetrafluoroethylene@melamine sponge composite as the precursor, showing high specific surface area and total volume, suitable as an electroactive material for high-performance supercapacitors.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
Mohd Ubaidullah, Abdullah M. Al-Enizi, Tansir Ahamad, Shoyebmohamad F. Shaikh, Mohammed A. Al-Abdrabalnabi, Mohammad Shahzad Samdani, Dinesh Kumar, Mohammad Asif Alam, Maha Khan
Summary: This study fabricated high surface area nitrogen-doped mesoporous carbon (N-MC) using waste PET plastics, demonstrating excellent electrochemical performance in supercapacitors. By recycling PET waste through chemical processes, the efficient depolymerization and conversion of PET into high-performance materials for energy storage applications were achieved.
JOURNAL OF ENERGY STORAGE
(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)