Article
Chemistry, Physical
Jing Wang, Haowen Liu, Hengcai Wu, Qunqing Li, Yuegang Zhang, Shoushan Fan, Jiaping Wang
Summary: Research shows that using carbon nanotube aerogels coated with amorphous carbon can improve the practical application of lithium metal anodes by providing a solid structure to reduce local current density, suppress lithium dendrites growth, and achieve better electrochemical performance.
Article
Chemistry, Physical
K. P. Lakshmi, R. Deivanayagam, M. M. Shaijumon
Summary: A composite of antimony oxide microstructures encapsulated in graphene aerogel, interconnected by a network of carbon nanotubes, shows excellent electrochemical performance as an anode for sodium and lithium ion batteries. The unique star-shaped Sb2O3 microstructures are synthesized through a facile hydrothermal method, exhibiting stable specific capacity over 100 cycles. The study investigates the reaction kinetics upon sodiation and attempts to probe the underlying electrochemical charge storage mechanism using ex-situ techniques.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Shuling Liu, Kang Feng, Wenxuan Xu, Xiaoqiang Shi, Zheng Xu, Chao Wang
Summary: Composites of cobalt selenide nanoparticles, carbon nanotubes, and reduced graphene oxide have been successfully prepared and used as electrode materials for lithium and sodium ion batteries. The composite exhibits high reversible specific capacity and improved ion diffusion and charge transfer resistance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Zehao Zhang, Xiang Liu, Youjun Lu, Haibo Li
Summary: This work proposes a facile covalent self-assemble strategy to prepare the ZrN@rGO composite for enhanced LIB. The results show that a strong Zr-C covalent bond is formed between ZrN and rGO, and electron transfer promotes charge density at the ZrN@rGO heterointerface. The volume change of ZrN can be effectively alleviated by coupling with rGO, leading to a high specific capacity in the lithium-ion battery.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Xiaoming Fan, Zihan Wang, Ting Cai, Yongsan Yang, Hongchang Wu, Shuai Cao, Zeheng Yang, Weixin Zhang
Summary: The research developed a new method of preparing integrated anode using all-carbon binder to effectively bind anode material particles and current collector, improving the stability of the electrode. The CNTs-reinforced all-carbon binder effectively suppressed the volume expansion of anode materials during lithiation process, ensuring the cycling stability of the electrode.
Article
Chemistry, Physical
Qinxing Xie, Shipeng Qu, Yufeng Zhang, Peng Zhao
Summary: Nitrogen-enriched graphene-like carbon nanosheets were synthesized using coffee ground as carbon and nitrogen source, calcium carbonate and iron nitrate as structural templates and catalysts, resulting in porous carbon materials with moderate specific surface area and tuneable pore sizes. As lithium ion battery anodes, the carbon materials exhibit enhanced energy storage capability and cycling stability, making them a promising candidate for next-generation high performance lithium-ion batteries.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Analytical
Qinxing Xie, Yating Zhu, Peng Zhao, Chen Yang
Summary: The hierarchical flower-like Sn3O4 clusters were synthesized via a hydrothermal method and shown to have improved energy storage capability when assembled with multiwalled carbon nanotubes (MWCNTs) and graphene. The resulting Sn3O4/CNTs/Gr composite demonstrated superior cycling stability and excellent rate performance compared to bare Sn3O4 and related binary composites.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Ruoxin Yuan, Hao Wen, Li Zeng, Xi Li, Xingang Liu, Chuhong Zhang
Summary: The study demonstrates the preparation of cobalt monoxide/graphene nanocomposites using supercritical CO2 assisted solvothermal method, which promotes the crystallization of nanoparticles and the formation of stable chemical bonds on the graphene nanosheets. These improvements contribute to enhance the cycle stability and rate capability of the material when used as an anode in lithium-ion batteries.
Article
Electrochemistry
Sourav Ghosh, Zhimin Qi, Haiyan Wang, Surendra K. Martha, Vilas G. Pol
Summary: The impact of the operating potential window of WS2 electrodes during charge-discharge in Na and K-ion batteries was investigated, revealing that restricting the upper cut-off potential to 2.0 V resulted in better electrochemical performance. Additionally, kinetic analysis showed that K-ion storage in WS2 electrodes is diffusion dominated, while Na-ion storage is pseudo-capacitive in nature.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Haonan Wang, Jianfu Chen, Pengtao Wang, Ce Liang, Kaifeng Yu
Summary: In this study, a porous graphene-like biomass carbon material anode with excellent electrochemical performance was prepared for both Li-ion and Na-ion batteries. Its pseudocapacitance mechanism facilitates the diffusion of ions, and it exhibits stable cycling performance and high-rate capability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Uijin Chang, KwangSup Eom
Summary: The study presents a micron-sized tungsten disulfide/reduced graphene oxide composite modified with excess sulfur as an anode material for lithium-ion batteries, which can significantly increase the specific capacity and mitigate structural decay, demonstrating excellent cyclic performance.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Memona Idrees, Ahmed S. Haidyrah, Ata-ur-Rehman, Qin Zhang, Xuanke Li, Syed Mustansar Abbas
Summary: Fe2N decorated on reduced graphene oxide (rGO) prepared by a hydrothermal reaction showed promising lithium-ion battery performance, with higher capacity and lower capacity fading rate. The conductive graphene network facilitated charge transfer reactions, while mesoporous Fe2N aided in electrolyte penetration and intercalation/deintercalation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Huaiyang Chen, Xiaoping Shen, Zhenyuan Ji, Jia Cheng, Guangxiang Liu, Leiming Lang, Yao Chen
Summary: In this paper, porous Mn3O4-Fe3O4 nanoparticles are anchored on reduced graphene oxide (rGO) nanosheets to form Mn3O4-Fe3O4/rGO composites. The composites exhibit superior electrochemical lithium storage performances, including high reversible capacity, good rate capability, and strong long-term cycle stability. The study demonstrates that graphene not only provides conductivity, but also mitigates volume expansion and prevents nanoparticle aggregation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Analytical
Yao Chen, Run-Chao Zhou, Yong-Hua Wan, Jun-Wei Hao, Hai-Rui You, Xiao-Min Liu, Hui Yang
Summary: Researchers have successfully improved the reversible capacity and rate capability of LIBs by employing a multi-metal Prussian blue composite with carbon nanotubes as the anode. The enhanced performance may be attributed to the effective connection between CNT and CoMnHCF particles, which enhances charge-transfer kinetics and reduces electrical resistance. The charge/discharge mechanism involves the full reduction of Co2+, Mn2+, and Fe2+ in the initial lithiation process, followed by the redox of Fe2O3/Fe0, CoO/Co0, and MnO/Mn0 in subsequent cycles.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Caili Yang, Yixin Ran, Chenxi Gao, Zuyong Wang, Yuan-Li Ding
Summary: Li3VO4 is a promising intercalation anode material for lithium-ion batteries, but it has poor electronic conductivity. To address this issue, researchers developed a self-template strategy to construct 3D hierarchical Li3VO4/C hybrids, which show efficient electron/ion transport system.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
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)