Article
Chemistry, Physical
Hang Luo, Xuemei Zhang, Changhaoyue Xu, Wei He, Ziyang Wang, Wenlong Cai, Yun Zhang
Summary: This study proposes a design strategy for constructing a yolk-shell structure to enhance the electrochemical performance of silicon oxide-based anodes in lithium-ion batteries. The yolk-shell structure, prepared by one-step carbonization, showed outstanding electrochemical stability with high specific capacity and Coulombic efficiency after 500 cycles. The research provides a direction for the preparation of yolk-shell electrode materials and promotes further development of high-performance silicon oxide-based anodes.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Energy & Fuels
Hao Wu, Jie Ma, Xiaolei Sun, Liwei Su, Bowen Sun, Lihua Zheng, Yingying Jiang, Huan Chen, Lianbang Wang
Summary: The yolk-shell structure designed through thermal reduction and in situ surface oxidation shows high discharge capacity and good cycling stability for CoSn@CoSnO x @C as a lithium-ion battery anode material.
Article
Electrochemistry
Yanlong Yu, Yuhang Jin, Najmul Hasan, Sufeng Cao, Xiaoliang Wang, Hai Ming, Peixing Shen, Runguo Zheng, Hongyu Sun, Mashkoor Ahmad
Summary: The study synthesized defective multiphase Nb2O5-R nanosheets with interface interaction with graphene oxide, demonstrating high-rate performance and long cycle life in lithium-ion batteries.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Quan Ouyang, Guangshe Li, Xin Zhang, Xu Zhao, Shilong Fu, Liping Li
Summary: This study reports a yolk-shell gradient-structured SiOx-based anode derived from periodic mesoporous organosilica spheres, which exhibits exceptional cycling stability and rate capability. The unique gradient structure and composition enhance the electrical conductivity of the SiOx anode, reduce side reactions, and provide void space for SiOx expansion, effectively mitigating the stress caused by volumetric effect.
Article
Chemistry, Physical
Yuluo Chen, Jinpeng Luo, Hang Xu, Xinran Hou, Man Gong, Changshu Yang, HuiCong Liu, Xiuqin Wei, Lang Zhou, Chuanqiang Yin, Xiaomin Li
Summary: Due to its excellent thermal stability, polyimide (PI) is considered a promising alternative for high-safety lithium-ion batteries (LIBs) separators. However, the wettability of PI separators to electrolytes remains undesirable. In this study, a composite membrane with a core-shell structure was developed using the complexation-hydrolyzation method, where gamma-Al2O3 nanoparticles were anchored on PI nanofibers (PI@gamma-Al2O3) as an LIB separator. The results showed that the PI@gamma-Al2O3 nanofiber membrane exhibited improved physicochemical properties and electrochemical performances, including enhanced wettability and higher ionic conductivity. Moreover, the membrane maintained a high capacity retention rate after 100 cycles. Therefore, the core-shell PI@gamma-Al2O3 nanofiber membranes have a promising future for the safety and stability of LIBs.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Mingyuan Li, Huiwei Du, Lun Hong, Jingji Zhang, Jiangying Wang, Quan Zong, Zejie Zhu, Xianhe Meng, Tao Hong
Summary: To overcome the limitations of ZnO as an anode material for lithium-ion batteries, researchers synthesized ZnO nanoparticles wrapped in N-doped multilayer graphene (ZnO@C) through chemical vapor deposition. The ZnO@C composite exhibited improved specific capacity, rate performance, cycle stability, and conductivity. By optimizing the thickness of the graphene layer and the filling rate of ZnO in a yolk-shell structure, a reversible specific capacity of 390 mAh/g after 200 cycles at 0.25 A/g and a capacity of 204.6 mAh/g at 1 A/g were achieved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Xiong Sun, Chengkai Yang, Yajun Zhao, Yang Li, Zhicheng Shang, Henghui Zhou, Wen Liu, Liang Luo, Xiaoming Sun
Summary: The research proposes ultrathin aluminum nanosheets grown on carbon nanotubes as anode materials for lithium ion batteries, achieving high reversible capacity, excellent rate capacity, and long-term stability. Density functional theory calculations reveal the advantages of the Al(111) facet and the role of carbon nanotubes in the composite materials.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yan Liu, Yue Qing, Bin Zhou, Lida Wang, Ben Pu, Xuefeng Zhou, Yongbin Wang, Mingzhe Zhang, Jia Bai, Qi Tang, Weiqing Yang
Summary: Antimony (Sb) is encapsulated into a carbon matrix to mitigate volume expansion during cycling in sodium-ion batteries. A yolk-shell Sb@Void@graphdiyne (GDY) nanobox with three-dimensional Na+ transport channels is synthesized, enabling fast Na+ diffusion. The Sb@Void@GDY nanobox exhibits excellent rate capability and cycling stability.
Article
Chemistry, Multidisciplinary
Linlin Ma, Baoxiu Hou, Ningzhao Shang, Shuaihua Zhang, Chun Wang, Lingbo Zong, Jianjun Song, Jiangyan Wang, Xiaoxian Zhao
Summary: Metal oxides/sulfides have been explored as promising anode candidates for next-generation lithium-ion batteries, but their practical applications have been limited by volume changes and poor conductivities. In this study, twin-born Fe3O4/FeS/carbon nanosheets were precisely fabricated and exhibited excellent electrochemical performance as an anode material for LIBs, with high specific capacity, cycling stability, and rate performance. This work deepens the understanding of precise synthesis of heterostructured materials for electrochemical energy storage.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Physical
Wen Luo, Chenhui Fang, Xiaofeng Zhang, Jiaxing Liu, Hong Ma, Guoqing Zhang, Zhongyun Liu, Xinxi Li
Summary: A facile strategy to obtain a silicon-based composite material covered with carbon nanosheet templates was proposed, resulting in enhanced electrolyte transfer and long-term stability, making it suitable for use as an anode material for lithium-ion batteries. This work provides a templated idea for long-term stable LIBs.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Xinjin Gao, Zhenpeng Xiao, Lili Jiang, Chao Wang, Xinru Lin, Lizhi Sheng
Summary: A yolk-shell porous Fe3O4@C/ graphene nanosheet structure is designed to address the volume change and dissolution/aggregation issues of Fe3O4 anode materials. This structure not only provides space for volume change but also restricts overexpansion, resulting in improved capacity retention. Additionally, the porous Fe3O4 promotes ion transport, and the carbon shell enhances overall conductivity.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Environmental
Peiyao Wang, Jin Bai, Kunzhen Li, Hongyang Ma, Wanyun Li, Xuebin Zhu, Yuping Sun, Bangchuan Zhao
Summary: In this study, a stable bimetal nitride NiCo2N hollow sphere material with interconnected nanosheets shell was successfully synthesized and showed excellent electrochemical performance as an anode for lithium-ion batteries. The unique structure effectively relieves the volume change of the electrode material and shortens the diffusion distance of lithium ions, leading to high discharge capacity and good cycling stability. The electrochemical reaction mechanism of the electrodes was revealed through ex situ XRD, ex situ EIS, and ex situ HRTEM characterization.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Metallurgy & Metallurgical Engineering
Han-bing He, Zhen Liu, Chao-qun Peng, Jun Liu, Xiao-feng Wang, Jing Zeng
Summary: In this study, vertical MoS2 nanosheets were patterned onto graphene as nanoflowers through a two-step hydrothermal method. The interconnected network and intimate contact between MoS2 nanosheets and graphene by vertical channels enabled a high mechanical integrity of the electrode and cycling stability.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Chemistry, Analytical
Yajing Fu, Jiahao Zhang, Hairui Wang, Lijuan Tao, Shaoqing Liu, Yingxi Wang, Shiquan Wang, Jianwen Liu
Summary: In this study, a bimetallic oxide CoFe2O4/C composite was synthesized using solvothermal and subsequent annealing process. As the anode material for lithium ion batteries, the CoFe2O4/C microspheres exhibited a reversible specific capacity of 1270 mAh g-1 at 100 mA g-1 after 100 cycles and about 500 mAh g-1 at a high current density of 1.0 A g-1 after 1000 cycles. These satisfactory electrochemical properties are mainly attributed to the unique yolk structure, the synergistic effect of two metal ions, carbon coating, and small nanoparticles of CoFe2O4/C. This work provides an effective synthesis method for mixed transition metal oxides with high-performance lithium storage for LIB applications.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Songyan Bai, Byunghoon Kim, Chungryeol Kim, Orapa Tamwattana, Hyeokjun Park, Jihyeon Kim, Dongwhan Lee, Kisuk Kang
Summary: The use of MOF gel separators in organic batteries can effectively address electrode dissolution and shuttle effect issues, improving cycle stability and capacity retention. This technology has great potential for various applications, as the pore size can be tailored to specific organic electrode materials.
NATURE NANOTECHNOLOGY
(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)