Article
Chemistry, Multidisciplinary
Jaehoon Choi, Omid Zabihi, Mojtaba Ahmadi, Minoo Naebe
Summary: This study presents a promising approach for fabricating high-performance structural batteries with enhanced energy storage and structural capabilities.
Article
Electrochemistry
Honami Nariyama, Shuji Ito, Yuka Okada, Yuu Inatomi, Kazuhide Ichikawa, Yui Masumoto, Masahisa Fujimoto
Summary: In this study, a novel composition of flow batteries with solid active materials and redox mediators is proposed, aiming to increase the energy density of stationary energy storage. The experiment results demonstrate the feasibility of the concept.
ELECTROCHIMICA ACTA
(2022)
Article
Engineering, Environmental
Xiaoxiao Zhang, Zengshe Liu, Deyang Qu
Summary: In this study, the commercially mature ion-exchange (IX) method was explored for the first time to recover lithium from spent lithium iron phosphate (LFP) cathodes. The Li-K IX reaction using oxalic acid as the feeding solution delivered a potential product of multi-elemental fertilizer. This simple and economical technology provides a practical recycling strategy for spent LFP batteries.
Article
Materials Science, Multidisciplinary
Hongjiang Chen, Sangwook Kim, Hsiao-Ying Shadow Huang
Summary: This study investigates the influence of dislocations on the electrochemical performance of lithium-ion batteries. The results show that introducing tailored dislocations can improve the electrical power, stored energy, and lithium diffusivity of the batteries.
Article
Chemistry, Physical
Tassadit Ouaneche, Matthieu Courty, Lorenzo Stievano, Laure Monconduit, Claude Guery, Moulay T. Sougrati, Nadir Recham
Summary: In this study, a direct recycling process of spent LiFePO4 by direct room temperature chemical lithiation is reported. The characterization of a recovered LFP cathode from a spent commercial battery shows that the end of life of the battery is mainly due to lithium loss, while the structure of the LFP cathode material is preserved. The cathode can be efficiently recovered by direct lithiation in solution using LiI in ethanol, with excellent electrochemical performance and without additional heat treatment.
JOURNAL OF POWER SOURCES
(2023)
Article
Green & Sustainable Science & Technology
Zhizuan Zhou, Xiaodong Zhou, Xiaoyu Ju, Maoyu Li, Bei Cao, Lizhong Yang
Summary: This study investigates the horizontal and vertical thermal runaway propagation characteristics of lithium-iron-phosphate battery modules with different connections. It is found that during vertical propagation, almost simultaneous thermal runaway and high-temperature combustion occur in the upper batteries, posing significant thermal hazards. The upper batteries experience severer thermal runaway compared to the lower batteries, with much higher maximum temperature and heat release. The results provide valuable information for thermal runaway propagation between battery modules and contribute to the safety application of energy storage systems.
Article
Thermodynamics
Zhizuan Zhou, Xiaodong Zhou, Bei Cao, Lizhong Yang, K. M. Liew
Summary: This research investigates the impact of heating temperature on the thermal runaway (TR) of lithium-ion batteries (LIBs). It is found that TR occurs when the heating temperature exceeds 200 degrees Celsius, while only safety venting is observed at 175 degrees Celsius. As the heating temperature increases, the time interval between safety venting and TR decreases, and the temperature difference within the battery decreases. Additionally, the contribution of self-generated heat to trigger TR at different heating temperatures is identified.
Article
Materials Science, Multidisciplinary
Ji-Ming Peng, Zhi-Qiang Chen, Yu Li, Si-Jiang Hu, Qi-Chang Pan, Feng-Hua Zheng, Hong-Qiang Wang, Qing-Yu Li
Summary: By creating a cross-linked conducting carbon network in LiFePO4/C cathode material, the modulation of electrode/electrolyte interface can yield excellent rate performance, enhance electron transmission rate and efficiency for Li storage, while inhibiting agglomeration and growth of LiFePO4/C primary particles, leading to a shortened Li+ diffusion pathway.
Article
Energy & Fuels
Wieslaw Madej, Andrzej Wojciechowski
Summary: This article focuses on the critical issue of power source selection in electronic devices, especially for portable devices operating in varying environmental conditions. It discusses the characteristics and risks of lithium iron phosphate (LiFePO4) batteries, as well as the impact of initial charge level differences on cell damage risk in battery packs.
Article
Chemistry, Applied
Xu Su, Han Fang, Hao Yang, Fangfang Zou, Gang Li, Lian Wang, Hongxin Liao, Wei Guan, Xuebu Hu
Summary: Polysaccharides, such as cellulose sulfate lithium (CSL) with strong adhesion, are synthesized and used as binders for LiFePO4 (LFP) cathode. Compared to conventional polyvinylidene difluoride (PVDF) binder, LFP cathode using CSL (LFP-CSL) exhibits lower polarization and better rate performance due to higher lithium-ion conductivity. CSL binder also maintains the integrity of the LFP cathode structure during cycling, resulting in a discharge capacity of 133.4 mAh g(-1) and remarkable cycle stability after 300 cycles at 1C.
CARBOHYDRATE POLYMERS
(2023)
Article
Energy & Fuels
Mengjie Yang, Yijun Ye, Aijun Yang, Zhiyuan Jiang, Xiaohua Wang, Huan Yuan, Mingzhe Rong
Summary: This study investigates the aging mechanism and thermal runaway behavior of aged LiFePO4 batteries induced by different degrees of slight overcharge cycling. The results reveal the interaction between the aging mechanism and TR features of slightly overcharged LIBs, providing valuable information for battery safety design and early warning of TR.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Yang Liu, Cai Qi, Dandan Cai, Xiao Tang, Ying Li, Wenxian Li, Qinsi Shao, Jiujun Zhang
Summary: The development of electrode materials with high capacity and rate capability is necessary for improving the energy density and cycle life of lithium-ion batteries (LIBs). In this study, a cathode material, LiFePO4/C, modified with high electrical conductivity compound tantalum carbide (TaC), was successfully synthesized via hydrothermal method. The co-coating of nano-sized TaC and amorphous carbon layer on the surface of LiFePO4 particles allows for efficient electron and Li ion transfer, resulting in improved electrochemical kinetics. As a cathode material for LIBs, this composite demonstrates excellent electrochemical performances with high reversible capacity (159.0 mAh g(-1), 0.1C) and improved rate capacity. This methodology provides a new prospect for the application of transition metal carbides (TMCs) in modifying battery electrode materials.
Article
Chemistry, Analytical
Maral Ghahramani, Susan Hamidi, Mahsa Mohammad, Mehran Javanbakht, Pooya Gorji
Summary: In this study, sulfonated copolymer was used as an effective binder to improve the efficiency of lithium-ion batteries. The investigation showed that the use of sulfonated PVDF binder resulted in decreased concentration polarization and improved lithiation and delithiation kinetics for LiFePO4 electrodes. After 300 cycles, the discharge capacity remained 90 mAh g-1 with a capacity retention of 100% at 1C.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Xingzhong Liu, Yue Zhang, Yanshuang Meng, Tai Kang, Hongfu Gao, Liangbiao Huang, Fuliang Zhu
Summary: In this study, a Mg2+-doped LiFePO4 cathode material was prepared using a solid-state method. The results showed that Mg2+ doping improved the electronic conductivity and ion diffusion properties of the material, leading to enhanced rate performance and cycle stability.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Computer Science, Information Systems
Christian Branas, Juan C. Viera, Francisco J. Azcondo, Rosario Casanueva, Manuela Gonzalez, Francisco J. Diaz
Summary: A new battery charger based on a multiphase resonant converter is proposed for high-capacity 48V LiFePO4 lithium-ion batteries, ensuring accurate control of charging current to protect battery health and correlating tightly with a battery model based on experimental data. The designed converter operates efficiently and reliably, suitable for various load conditions during the charging process.
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)