Article
Electrochemistry
Chuanbao Wu, Yunwei Wang, Guangqiang Ma, Xingwen Zheng
Summary: The nanostructured Li4Ti5O12 anode materials prepared by the photo-assisted sol-gel route exhibit high specific capacity at high discharge rates and excellent cycling stability. The outstanding performance is mainly attributed to grain refinement induced by ultraviolet photo-irradiation.
ELECTROCHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Yen-Liang Chu, Yu-Chieh Huang, Yu-Chao Tseng, Chia-Chi Chang, Hsisheng Teng, Bing -Hung Chen, Jeng-Shiung Jan
Summary: In order to pursue sustainable developments, this study investigates the application of poly(N-vinylformamide) (PNVF) as a green, bio-derived and water-soluble binder for Li4Ti5O12 (LTO) anode in lithium-ion batteries (LIBs). The electrochemical performance differences between PNVF electrodes and conventional polyvinylidene fluoride (PVDF) electrodes are presented. The results demonstrate that the electrode with 3 wt% PNVF shows higher peeling force and better cycle performance compared to the one with 10 wt% PVDF. Additionally, the optimal PNVF electrode exhibits lower electrochemical impedance and higher lithium-ion diffusion coefficient.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Kang Liang, Xiaobing Huang, Xianda Hong, Yuanhong Liao, Yurong Ren, Haiyan Wang
Summary: In this study, sulfur and nitrogen-doped LTO/reduced graphene oxide (SN-LTO/rGO) composite material was successfully synthesized through structural regulating and surface modification, exhibiting excellent performance as an anode in sodium-ion batteries with high discharge capacity and stable cycle performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Energy & Fuels
Li Bai, Bixiang Pan, Fangxiang Song, Qianlin Chen
Summary: In this study, Co/S co-doped nano-LTO was prepared as an anode material for lithium-ion batteries. The co-doping and nanosizing effects successfully improved the ion diffusion coefficient and capacity of Li4Ti5O12.
JOURNAL OF ENERGY STORAGE
(2023)
Review
Materials Science, Ceramics
Z. Nezamzadeh Ezhyeh, M. Khodaei, F. Torabi
Summary: Lithium-Ion Batteries (LIBs) are crucial for saving oil and reducing exhaust emissions in applications such as electric vehicles and electronic devices. Lithium titanate (LTO) is a promising anode material with reversible Li-ion extraction and low volume change during Li transmission. However, LTO has limitations that can be improved through doping. This report reviews the doping of LTO with various dopants and different fabrication methods.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Tianyu Zhu, Cuiping Yu, Yang Li, Rui Cai, Jiewu Cui, Hongmei Zheng, Dong Chen, Yong Zhang, Yucheng Wu, Yan Wang
Summary: This study investigated the effects of LBO coating on the lithium ion storage performance, finding that LTO coated with 2 wt% LBO exhibited optimal performance at a current density of 0.1 A g(-1), showing improved rate capability and cycling stability. The LBO-LTO composites are competitive and promising candidates for electrochemical energy storage applications.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Hanlin Liu, Wang Yang, Sai Che, Yun Li, Cong Xu, Xin Wang, Guang Ma, Guoyong Huang, Yongfeng Li
Summary: A silicon doped graphene material (SiG) with twice specific capacity of pristine graphene was synthesized through a microwave irradiation treatment. SiG showed improved Li+ storage and diffusion, enhanced energy density and power density. The full cell assembled with SiG/LiFePO4 retained 86% capacity after 200 cycles.
Article
Engineering, Chemical
Yuhao Ma, Yangyang Wang, Guilin Yan, Fei Yuan, Wentao Zhang
Summary: The Ca-doped Li4Ti5O12 samples with flower-like morphology synthesized by hydrothermal method showed improved electrochemical performances as anode material for lithium-ion batteries. The incorporation of Ca2+ enhanced the specific discharge capacity, discharge rate, and cycling performance.
Review
Chemistry, Multidisciplinary
Vijay Kumar Srivastava, Stefanos Mourdikoudis, Jalal Azadmanjiri, Parshant Kumar, Zdenek Sofer
Summary: The present Highlight paper summarises the reported works on the effect of sulfur and nitrogen doping on graphene nanoplatelets for high capacity electrodes in solid-state rechargeable energy storage devices. Lithium-ion batteries provide high power density but are limited by the low electrical conductivity of the anode materials. By designing high-power and stable structures, the capacity and kinetic balance between the anode and cathode can be increased. Graphene nanoplatelets have been widely studied as anode materials due to their unique structure and outstanding electrochemical properties.
Article
Nanoscience & Nanotechnology
Haitao Gu, Yong Wang, Yun Zeng, Meng Yu, Tong Liu, Jian Chen, Ke Wang, Jingying Xie, Linsen Li
Summary: Dopamine-polymerization-guided carbon coating of SiOx anodes improves their electrochemical performance and cycling life. Suppression of cracks and excessive growth of the solid electrolyte interphase (SEI) layer contributes to the enhanced performance and stability.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Fanan Kong, Yong Yue, Qingyin Li, Shijie Ren
Summary: Heteroatom doping is seen as a promising strategy to enhance the electrochemical performance of carbon materials, with sulfur-doped graphdiyne (S-GDY) showing great potential in improving lithium-ion battery performance. The uniform distribution of sulfur atoms in the carbon skeleton of S-GDY facilitates fast diffusion and storage of lithium ions, leading to high specific capacity and superior rate performances in lithium-ion batteries constructed with S-GDY as anode.
Article
Chemistry, Physical
Beirong Liang, Sisi Zhu, Jingchu Wang, Xianqing Liang, Haifu Huang, Dan Huang, Wenzheng Zhou, Shuaikai Xu, Jin Guo
Summary: The study successfully synthesized silicon-doped FeOOH@rGO composite as an anode material for lithium-ion batteries, demonstrating high reversibility, outstanding rate capability, and excellent long-term cyclability.
APPLIED SURFACE SCIENCE
(2021)
Article
Electrochemistry
Lukman Noerochim, Rachmad Sulaksono Prabowo, Widyastuti Widyastuti, Diah Susanti, Achmad Subhan, Nurul Hayati Idris
Summary: Iodide-doped Li4Ti5O12 (LTO) was prepared using a solid-state reaction method and ball milling, followed by calcination at 750 degrees C for 10 hours in an air atmosphere. X-ray diffraction analysis revealed that the iodide-doped LTO had a spinel cubic structure without any impurities. The 0.2 mol iodide-doped LTO exhibited enhanced high-rate capability, with a specific discharge capacity of 123.31 mAh g(-1) at 15 C. After 100 cycles, the 0.2 mol iodide-doped LTO maintained a specific discharge capacity of 171.19 mAh g(-1) at 1 C, with a capacity retention of 99.15%. These results indicate that iodide-doped LTO is a promising strategy for achieving high electrochemical performance in LTO anodes for lithium-ion batteries.
Article
Nanoscience & Nanotechnology
Haili Cai, Lining Fan, Wei Chen, Hui Zheng, Xiaoxiao Guo, Peng Zheng, Liang Zheng, Yang Zhang
Summary: Iron carbide-functionalized porous carbon nano-composites are potential anode materials for lithium-ion batteries due to their good electrocatalytic performance, stable chemical properties, and reasonable cost-effectiveness. In this study, a Fe3C-functionalized 3D nitrogen-doped porous graphene nanocomposite (Fe3C/NPG) was synthesized using silk fibroin coordination with Fe ions. The Fe3C/NPG composite exhibited a distinct 3D porous structure, high doping levels of nitrogen atoms (approximately 10%), and well-dispersed Fe3C nanoparticles with strong interfacial bonding. It showed excellent cycling stability and rate performance as a LIB anode material at certain heating temperature and Fe ion concentration.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Applied
Jun Liu, Aixiang Wei, Guoxiang Pan, Shenghui Shen, Zhiming Xiao, Yu Zhao, Xinhui Xia
Summary: The study presents a sacrificial NiO arrays template method for controllable synthesis of self-supported hierarchical porous Li4Ti5O12/C nanoflakes arrays, serving as fast rechargeable anodes for LIBs. The well-designed binder-free porous LTO/C nanoflakes arrays exhibit notable high-rate lithium ion storage performance due to enhanced electrical conductivity and accelerated ion transfer channels.
JOURNAL OF ENERGY CHEMISTRY
(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)