Article
Chemistry, Physical
Jiahao Li, Jun Cheng, Yanjun Chen, Chao Wang, Li Guo
Summary: By co-doping K(+) and Zr(4+), the NVP structure was successfully optimized, increasing the Na(+) migration channels and intrinsic electrical conductivity, thereby significantly improving the electrochemical performance.
Article
Chemistry, Physical
Pritamkumar V. Shinde, Dimple P. Dutta
Summary: This study aims to improve the electrochemical performance of tavorite-structured LiFePO4F by co-doping vanadium and sodium ions. The doped cathodes showed reduced particle size, improved reversible capacities, stable cycle performance, better rate capability, and decreased charge transfer resistance. Sodium addition proved to be beneficial for improving the charge transfer kinetics in the lithium vanadium fluorophosphate-based cathodes for lithium-ion batteries.
Article
Chemistry, Physical
Chengxiang Mei, Fanghui Du, Ling Wu, Zhongxu Fan, Qi Hao, Tao Xu, Huazhang Guo, Junwei Zheng
Summary: Doping vanadium into the LiNi0.88Co0.09Al0.03O2 material can improve its structural and interfacial stability, leading to enhanced cycling stability and rate capability of lithium-ion batteries.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Xinran Li, Cheng Chen, Jian Yang, Zixuan Fang, Shumao Zeng, Tingting Feng, Haiping Zhou, Shu Zhang, Mengqiang Wu
Summary: This study addresses the low conductivity issue of the sodium ion battery cathode by employing transitional metal cation doping and carbon frame design. A stable and firm skeleton structure is achieved through the anchoring effect of external hard carbon layers and the pillar effect of Zn2+, leading to improved rate performance and long cycle life.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Jianyuan Wu, Cho-Jen Tsai
Summary: In this study, the effects of Zn-doping on the material structure and electrochemical properties of LiCoPO4 (LCP) were explored, revealing an unreported intermediate phase Li1/2Co1-nZnnPO4 and proposing two conjectured configurations. It was found that the redox potential and conductivity of Zn-doped LCP increase with doping concentration, leading to improved rate capability, cycle life, and energy efficiency.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
M. A. A. Mohamed, L. Singer, H. Hahn, D. Djendjur, A. Oezkara, E. Thauer, I. G. Gonzalez-Martinez, M. Hantusch, B. Buechner, S. Hampel, R. Klingeler, N. Graessler
Summary: In this study, an antiperovskite (Li2Fe)SeO material was synthesized using a one-step solid-state method. The material showed excellent thermal stability and high cycling performance, making it a promising cathode material for lithium-ion batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Analytical
Jing Geng, Zhengguang Zou, Tianxing Wang, Shuchao Zhang, Shenglin Zhong, Wenqin Ling, Xiaoxiao Peng, Xixi Hu
Summary: Mn and K co-doped lithium iron phosphate (LFP) cathode materials were successfully synthesized by solvothermal method. The contributions of the two dopants to the LFP were investigated using density functional theory (DFT) calculations and various characterizations. The presence of Mn improved the energy band and diffusion kinetics, while K contributed to the stabilized structure and widened diffusion channel. The co-doped LFP cathode exhibited a high capacity of 145 mAhmiddotg-1 at 5 C and maintained a 96% retention rate after 400 cycles. The interaction between the two doping elements was discussed by comparing with a control group, and the KLMFP samples showed superior electrochemical performance in cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and charge-discharge cycling tests.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Electrochemistry
Yongjiang Sun, Zhedong Liu, Xiaochun Chen, Xiaoping Yang, Fuwei Xiang, Wen Lu
Summary: A modified lithium nickel cobalt manganese oxide cathode material with superior environmental, thermal stabilities, and electrochemical performances has been successfully developed by an in-situ co-modification approach without the need for additional steps and reagents. The new method exhibits excellent performance in terms of high discharge capacity, rate capability, and long cycle life.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Xiaoying Luo, Xuexia Wei, Cunhao Zhang, Jiaqi Huang, Xuan Cheng
Summary: Surface, interface, and microstructure studies were conducted on a modified carbon-coated lithium iron silicate composite with 15% vanadium modification to understand its enhanced electrochemical performance. The study confirmed the presence of amorphous carbon coating on the composite surface and a change in the predominant crystal phase after vanadium modification. Multi-peak fitting analysis of X-ray photoelectron spectroscopy spectra identified the simultaneous presence of multivalent iron and vanadium ions. The detailed characterization of microstructure, interface, and surface provided strong evidence for the partial substitution of divalent iron with divalent vanadium and the surface modification by vanadium, resulting in increased total carbon content and improved charge transfer kinetics.
SURFACES AND INTERFACES
(2022)
Article
Biochemistry & Molecular Biology
Elena V. V. Shchurik, Olga A. A. Kraevaya, Sergey G. G. Vasil'ev, Ivan S. S. Zhidkov, Ernst Z. Z. Kurmaev, Alexander F. F. Shestakov, Pavel A. A. Troshin
Summary: The development of organic electrode materials is crucial due to the increasing demand for affordable, safe, recyclable, and environmentally friendly batteries. In this study, a novel redox-active polymer consisting of a polyaniline-type conjugated backbone and quinizarin and anthraquinone units was synthesized. The polymer exhibited promising performance characteristics as a cathode material in both lithium and potassium cells, with high discharge capacity and excellent stability. The synthetic availability and low projected cost of the designed material make it suitable for practical implementation in scalable and inexpensive organic batteries, which are emerging as a sustainable energy storage technology.
Article
Crystallography
Kai Guo, Wenchong Cheng, Haiyuan Liu, Wenhao She, Yinpeng Wan, Heng Wang, Hanbin Li, Zidan Li, Xing Zhong, Jinbo Ouyang, Neng Yu
Summary: This study develops water molecules and Sn co-doped hydrated V2O5 as a cathode material for zinc-ion batteries, showing remarkable electrochemical performance including high specific capacity, exceptional rate capability, and excellent cycling life. This is attributed to faster charge transfer kinetics and enhanced crystalline framework.
Article
Metallurgy & Metallurgical Engineering
Fang-cheng LI, Gang Zhang, Zong-liang Zhang, Jian Yang, Fang-yang Liu, Ming Jia, Liang-xing Jiang
Summary: A uniform Al-doped LiNi0.5Co0.2Mn0.3O2 cathode material was prepared, which showed improved electrochemical performance and rate performance.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Chemistry, Physical
Roman R. Kapaev, Alexander F. Shestakov, Sergey G. Vasil'ev, Keith J. Stevenson
Summary: The ladder-type conjugated polymer with hexaazatriphenylene moieties serves as a promising cathode material for Li-, Na-, and K-based batteries, exhibiting high specific capacities and excellent cycling stability. The material also shows remarkable capacity retention even at high discharge rates.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Electrochemistry
Daniel Weber, Jing Lin, Anuj Pokle, Kerstin Volz, Juergen Janek, Torsten Brezesinski, Matteo Bianchini
Summary: This study systematically investigates the effect of Mg2+ doping on the crystal structure and electrochemical performance of LiNiO2. The results show that doping with a small amount of Mg2+ can improve the capacity retention during cycling, but sacrifices the specific discharge capacity. Additionally, the study reveals the mechanism of Mg2+ doping on the structural changes of LiNiO2.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Zhitao E, Huajun Guo, Jiexi Wang, Zhixing Wang, Xinhai Li, Guochun Yan
Summary: In this study, the stability of LiCoO2 (LCO) under high cutoff voltages was improved by modifying it with Al-Mg-Ti co-doping and Al2O3 coating. The modified LCO showed enhanced electrochemical and kinetic performances. A new phase, Al2Ti7O15 (ATO), was discovered near the surface of the modified LCO, which improved electron conductivity and transmission property of lithium ions. This work provides new insights into the effect of Al-Mg-Ti co-doping on LCO materials.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Zhihao Liu, Zhen Wang, Tongzhou Lu, Pengpeng Dai, Peng Gao, Yongming Zhu
JOURNAL OF ALLOYS AND COMPOUNDS
(2018)
Article
Materials Science, Multidisciplinary
Peng Gao, Yunpeng Jiang, Yongming Zhu, Huili Hu
JOURNAL OF MATERIALS SCIENCE
(2018)
Article
Electrochemistry
Zhen Wang, Yongming Zhu, Yunpeng Jiang, Peng Gao, Guangwu Wen
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2018)
Article
Electrochemistry
Yunpeng Jiang, Zhihao Liu, Yongzheng Zhang, Huili Hu, Xiangguo Teng, Dianlong Wang, Peng Gao, Yongming Zhu
ELECTROCHIMICA ACTA
(2019)
Article
Electrochemistry
Yongzheng Zhang, Zhihao Liu, Zhen Wang, Yunpeng Jiang, Guangwu Wen, Peng Gao, Yongming Zhu
ELECTROCHIMICA ACTA
(2019)
Article
Materials Science, Ceramics
Zuolin Liu, Yongming Zhu, Peng Gao, Zhizhou Zhang
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2020)
Article
Chemistry, Physical
Zhen Wang, Xiaoyan Lin, Junting Zhang, Dong Wang, Chunyan Ding, Yongming Zhu, Peng Gao, Xiaoxiao Huang, Guangwu Wen
JOURNAL OF POWER SOURCES
(2020)
Article
Chemistry, Physical
Peng Gao, Shan Wang, Zhihao Liu, Yunpeng Jiang, Weiwei Zhou, Yongming Zhu
SOLID STATE IONICS
(2020)
Article
Chemistry, Physical
Feng Tian, Yongzheng Zhang, Zhongzhu Liu, Robson de Souza Monteiro, Rogerio Marques Ribas, Peng Gao, Yongming Zhu, Hailong Yu, Liubin Ben, Xuejie Huang
Summary: Doping with 1 mol% Nb5+ significantly improves the cycling performance of LiNi0.8Co0.1Mn0.1O2 cathode material, showing a 96.9% capacity retention after 300 cycles at 1C. The enhancement is attributed to stabilization of the layered structure, mitigation of Ni2+ migration, improved lithium diffusion kinetics, and reduced lattice expansion/shrinkage during cycling.
SOLID STATE IONICS
(2021)
Article
Chemistry, Physical
Hongxiang Ji, Liubin Ben, Shan Wang, Zhongzhu Liu, Robson Monteiro, Rogerio Ribas, Hailong Yu, Peng Gao, Yongming Zhu, Xuejie Huang
Summary: The research demonstrates that by precisely controlling the coating concentration and temperature, Nb2O5 can effectively bond to the surface of LiMn2O4 spinel cathode material, significantly improving the electrochemical performance. However, at high coating concentrations, Nb5+ ions diffuse into the cathode structure, leading to a decrease in cycling performance.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Shan Zhang, Peng Gao, Yasong Wang, Jing Li, Yongming Zhu
Summary: The cathodes of LiNiO2, Li[Ni0.9Mn0.1]O2, and the concentration gradient material Li[Ni0.9Mn0.1]O2 were synthesized by co-precipitation method. Tests showed that the gradient material G-LNM91 exhibited the best cycle performance among the three materials, with significant improvement in cycle performance due to manganese substitution.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Zhen Wang, Junting Zhang, Fahai Dong, Pengdong Liu, Yongming Zhu, Peng Gao, Xiaoxiao Huang, Guangwu Wen
Summary: The study utilized density functional theory to investigate the formation energies and doping sites of 13 rare earth-doped LLMOs. It was found that heavy rare earth elements exhibit better doping effects compared to light rare earth elements. Yb doping, with the lowest formation energy, enhances TM-O hybridization and significantly reduces the evolution of lattice oxygen, leading to excellent electrochemical performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Tian Rao, Peng Gao, Zimeng Zhu, Shan Wang, Liubin Ben, Yongming Zhu
Summary: The dual-doped LNO cathode material with magnesium and manganese exhibits higher capacity retention, more stable charge transfer impedance, and Li+ diffusion coefficient, improving its structural stability and cycling performance compared to the bare LNO counterpart.
SOLID STATE IONICS
(2022)
Article
Electrochemistry
Yasong Wang, Yongming Zhu, Peng Gao
Summary: LiNi0.95Mn0.05O2 binary material with a better layered structure and lower Li-Ni mixing ratio demonstrates excellent electrochemical performance compared to LiNiO2. The stability of Mn4+ and the presence of stable layered structure and lithium-ion diffusion channel contribute to its superior lithium-ion conductivity and structural integrity.
ELECTROCHIMICA ACTA
(2022)
Article
Materials Science, Multidisciplinary
Jing Li, Yongming Zhu, Boyi Pang, Peng Gao
Summary: LiNiO2 was synthesized by co-precipitation method and modified with Nb2O5. The Nb-modified materials showed good layered structure and low Li-Ni mixing. The surface of the modified materials was more compact and smoother. The electrochemical performance test results demonstrated that Nb doping-coating composite modified materials significantly improved the cycle performance of LiNiO2, with N1 exhibiting the best performance.
JOURNAL OF MATERIALS SCIENCE
(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)