Article
Electrochemistry
Tianxiang Yuan, Renheng Tang, Fangming Xiao, Shiyong Zuo, Ying Wang, Jiangwen Liu
Summary: The silicon suboxide (SiO) anode material shows promise for Lithium-ion batteries (LIBs) due to its high theoretical capacity, but it faces challenges such as large volume change (200%), low electrical conductivity, and low first Coulombic efficiency. A ternary composite ((SiOx/G/SnO2)@C) with a carbon coating layer is developed to address these issues, where graphite as part of the active materials improves Coulombic efficiency and controls volume change, and the carbon coating layer is designed to further restrain the high-volume change of SiOx. With the presence of SnO2, the composite exhibits improved electrochemical performance. Experimental results show that (SiOx/G/SnO2)@C achieves a first charging capacity of 382.6 mAh g(-1) at a current density of 100 mA g(-1), with the Coulombic efficiency improved from 62.2% to 74.9%. After 110 cycles, the capacity reaches 424.6 mAh g(-1) and the capacity retention rate is 103.9%.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Zhaolin Li, Hailei Zhao, Xin Tao, Yaozong Yang, Jie Wang, Zhao Yang
Summary: In this study, a graphene-modified lithium silicate (LS) nanodots decorated SiOx-C material was prepared using a sol-gel approach and subsequent heat treatment. The material exhibited fast Li-ion and electron transport, enhancing the electrode reaction kinetics of SiOx. The highly-conductive network of graphene also mitigated the structural stress of SiOx, resulting in excellent structural durability. The electrode showed a reversible capacity of 400 mAh g-1 at 0.5 A g-1 for 200 cycles without obvious capacity degradation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Multidisciplinary
Zongxian Yang, Chang Liu, Yu Du, Yijun Yang, Huacheng Jin, Xiang Liu, Fei Ding, Liuyang Bai, Yuge Ouyang, Fangli Yuan
Summary: Inspired by earbuds, researchers have designed and synthesized three-dimensional silicon suboxide nanonetworks, and further prepared multi-hierarchical ball-like silicon suboxide/carbon materials with enhanced elasticity and high energy density. As an anode material, the synthesized material exhibits high specific capacity and excellent cycling performance, showing great promise for high-performance battery applications.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Chemistry, Physical
Zhiwen Wang, Dong Cao, Mingxi Ren, Hanning Zhang, Limei Pan, Chuanfang John Zhang, Jian Yang
Summary: A Si@Ti3C2Tx composite with a fluffy and porous structure was prepared using a simple suspension mixing-freeze drying process, which can effectively improve the stability and cycling efficiency of silicon nanoparticles in lithium-ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Jin Shao, Yi Yang, Xiaoyan Zhang, Liming Shen, Ningzhong Bao
Summary: The study successfully prepared a free-standing Si/void/rGO yolk-shell structured electrode with good electrochemical performance, showing potential applications in the field of flexible lithium-ion batteries.
Article
Engineering, Chemical
Haodong Li, Yizhu Lai, Haoyu Li, Qing Yang, Zhiwei Yang, Zhuo Zheng, Yang Liu, Yan Sun, Benhe Zhong, Zhenguo Wu, Xiaodong Guo
Summary: In this study, it was found that nanoporous Si@C anodes prepared using larger particle size silicon exhibited better performance, providing significant guidance for industrial applications.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Electrochemistry
Zhaolin Li, Xin Tao, Yaozong Yang, Nana Yao, Zhao Yang, Dawei Luo, Jie Wang, Hailei Zhao
Summary: By using surface engineering, a graphene-coated microsized SiOx material was successfully achieved, which improves the structural integrity and cyclic performance of the electrode.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Zongxian Yang, Yuanjiang Dong, Chang Liu, Xiangqi Feng, Huacheng Jin, Xiaohong Ma, Fei Ding, Baoqiang Li, Liuyang Bai, Yuge Ouyang, Fangli Yuan
Summary: Silicon monoxide (SiO) is a highly promising anode material due to its high capacity and improved cycle stability. This study presents the synthesis of SiO0.4 nanowires with Si shielded by SiOx and the subsequent synthesis of carbon-coated SiO0.4 and carbon nanotubes (SiO0.4/CNTs@C) composite. The SiO0.4/CNTs@C electrode exhibits enhanced initial coulombic efficiency (ICE), increased capacity, and outstanding high-rate cycle performance.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Zhe Bai, Jielong He, Jiani Wu, Zhengyu Zhang, Xinping Huang, Jun Li
Summary: In this study, white onion was used as a biomass material to synthesize layered porous SiOx/C anode material through activation treatment, pre-calcination, and aluminothermic reduction. The results showed that the porous structure of SiOx/C could be effectively controlled by varying the activation treatment temperature. The SiOx/C-6 anode material obtained at an activation temperature of 600 degrees C exhibited the best electrochemical performance.
Article
Materials Science, Multidisciplinary
Lin Sun, Jie Xie, Songchao Huang, Yanxiu Liu, Lei Zhang, Jun Wu, Zhong Jin
Summary: A green and inexpensive method for obtaining two-dimensional Si/SiOx nanosheets by rapid thermal exfoliation of CaSi2 is reported. The nanosheets show high yield after rapid exfoliation reaction of CaSi2 in CO2 atmosphere and mild sonication. Ultra-high reversible capacity and outstanding electrochemical stability are observed in lithium-ion batteries using Si/SiOx/C nanosheets as anodes after applying a thin carbon outer layer coating.
SCIENCE CHINA-MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Zhaolin Li, Yaozong Yang, Jie Wang, Zhao Yang, Hailei Zhao
Summary: Silicon suboxide (SiOx) is a potential anode material for high-energy-density lithium ion batteries, but its electrochemical performance is hindered by mechanical instability due to volume variation. In this study, a sandwich-like structure is proposed, where SiOx nanoparticles are sandwiched between graphene sheets and amorphous carbon layer, improving the structural stability. The resulting C/SiOx@graphene material exhibits excellent cyclic performance and rate capability, offering a novel strategy to enhance the stability of high-capacity anode materials for lithium/sodium ion batteries.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Article
Electrochemistry
Xiaohua Huang, Renqing Guo, Yan Lin, Yiqi Cao, Jianbo Wu
Summary: Si/SiC/C in-situ composite microspindles were fabricated using Zn2SiO4/C nanowire bundles obtained from hydrothermal synthesis and magnesiothermic reduction. SiC and C components were uniformly distributed at the nanoscale level within the microspindle particle, strengthening the structure. As an anode material for lithium-ion batteries, the Si/SiC/C composite microspindles exhibited excellent cyclic and rate performances, outperforming pure Si microspindles.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Li Zeng, Hongxue Xi, Xingang Liu, Chuhong Zhang
Summary: Silicon/carbon nanofibers with a core-shell structure were successfully fabricated using a coaxial electrospinning technique, exhibiting excellent electrochemical performance, high electrical conductivity, and structural stability, showing great potential for advanced flexible energy storage.
Article
Engineering, Environmental
Lanlee Lee, Weerawat To A. Ran, Jung-Hun Lee, Soo Min Hwang, Young -Jun Kim
Summary: Si-based blended anodes composed of artificial graphite and graphene-coated SiOx particles are reported to have durable and high-energy properties. The graphene coating reduces electrode swelling and increases initial Coulombic efficiency, leading to increased areal capacity. The self-adaptive behavior of graphene mitigates mechanical damage and maintains electron conduction pathways, improving the reversibility of charge-discharge reactions. The blended anode exhibits good cycling stability and high volumetric capacities, demonstrating the applicability of high-capacity Si-based anodes for LIBs.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Zeyu Zhang, Shixiong Sun, Wen Zhang, Jia Xu, Xin Wang, Chun Fang, Qing Li, Jiantao Han
Summary: A watermelon-like core-buffer-shell Si/electrochemically exfoliated graphene/C (Si/EG/C) composite was prepared using ball milling and spray drying. The composite exhibited excellent electrochemical performance due to the presence of folds and voids in the graphene layer, which buffered the volume fluctuations of the silicon core and facilitated fast lithium ion transport. It has potential applications in the next generation of Li-ion batteries.
SCIENCE CHINA-MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Keli Zhang, Yonggao Xia, Zhengdong Yang, Rusheng Fu, Chengxu Shen, Zhaoping Liu
Article
Electrochemistry
Rusheng Fu, Zhenzhen Chang, Chengxu Shen, Haocheng Guo, Heran Huang, Yonggao Xia, Zhaoping Liu
ELECTROCHIMICA ACTA
(2018)
Article
Chemistry, Multidisciplinary
Chengxu Shen, Rusheng Fu, Yonggao Xia, Zhaoping Liu
Article
Chemistry, Multidisciplinary
Qin Wang, He Miao, Shanshan Sun, Yejian Xue, Zhaoping Liu
CHEMISTRY-A EUROPEAN JOURNAL
(2018)
Article
Electrochemistry
Rusheng Fu, Yunsong Li, Hong Yang, Ying Zhang, Xuan Cheng
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2013)
Article
Chemistry, Multidisciplinary
Rusheng Fu, Yongkang Wu, Chongzhao Fan, Zuxin Long, Guangjie Shao, Zhaoping Liu
Article
Chemistry, Multidisciplinary
Yongkang Wu, Rusheng Fu, Chongzhao Fan, Zuxin Long, Guangjie Shao, Zhaoping Liu
Article
Chemistry, Physical
Rusheng Fu, Yunsong Li, Yongkang Wu, Chengxu Shen, Chongzhao Fan, Zhaoping Liu
JOURNAL OF POWER SOURCES
(2019)
Article
Chemistry, Multidisciplinary
Chengxu Shen, Muhammad Hamid Raza, Patrick Amsalem, Thorsten Schultz, Norbert Koch, Nicola Pinna
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)