Article
Materials Science, Ceramics
Qinyan Yang, Xiang Yao, Hualing Tian, Yanjun Cai, Zhi Su
Summary: The introduction of fast ion conductor LVP into LVOP enhances electronic conductivity and first discharge specific capacity of the composite material, leading to improved cycle performance. The presence of both LVOP and LVP phases with carbon coating in the synthesized material contributes to the increase in Li+ pervasion channels and acceleration of Li+ transmission speed, further boosting electrochemical performance.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Analytical
Duyoung Choi, Ji-Yeon Shim, Sungwoong Choi, Sangmin Park, Harok Jeong, Min -Su Kim, Jungpil Kim, Junghoon Yang
Summary: Alkali vanadium phosphates are promising electrode materials for next-generation ion batteries, but suffer from low electronic conductivity due to phosphate group. In this study, a method of building an effective carbon backbone in alkali vanadium phosphate and carbon composite is proposed to overcome this issue. The carbon backbone not only provides electron pathways but also suppresses particle agglomeration, resulting in efficient ion diffusion and electron transfer. The importance of efficient carbon composite materials for phosphate-based electrode materials is demonstrated by investigating the rhombohedral Li3V2(PO4)3 material as a cathode and anode for lithium-ion batteries, which is a different phase from the well-known monoclinic Li3V2(PO4)3.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Lulu Mo, Limin Zhu, Lingling Xie, Xiaoyu Cao
Summary: This study reports the preparation of Cu-coated Li3V2(PO4)3/C composites via a chemical precipitation and self-reduction method. The optimized Cu coating content significantly enhances the electrochemical properties, leading to higher initial discharge capacity and improved cycling stability. Enhanced performance is attributed to the uniform coating of Cu on the surface of LVPC, promoting electron transfer and Li+ ion extraction/insertion.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Chemistry, Physical
Nali Li, Yanwei Tong, Dawei Yi, Xumei Cui, Xuefeng Zhang
Summary: Monoclinic Li3V2-xZrx(PO4)(3)/C composites with different Zr4+ doping amounts were prepared by a sol-gel combustion technique. Zr4+ doping led to an expansion in lattice volume, improved morphological characteristics, reduced resistances, and enhanced electrochemical performance. Optimal doping level of Zr4+ was found to be x = 0.05, resulting in the highest tap density and excellent electrochemical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Xiaohan Li, Ning Wang, Tong Su, Yujun Chai
Summary: Three-dimensional carbon network supported LVP and NVP composites were successfully prepared. These composites exhibit good lithium and sodium storage performance. A noticeable solid electrolyte interphase film was detected in the LVP/C electrode during cycling.
APPLIED SURFACE SCIENCE
(2022)
Article
Electrochemistry
Hwang Sheng Lee, Vishwanathan Ramar, Saravanan Kuppan, Mangayarkarasi Nagarathinam, Markas Law, Chen Wang, Abhinav Tripathi, Palani Balaya
Summary: The one-pot soft template synthesis of alpha-Li3V2(PO4)(3)/C shows excellent storage and rate performances, with unique morphology and long cycle life. This cathode material demonstrates high discharge capacities and better rate performance compared to known cathode materials for lithium-ion batteries.
ELECTROCHIMICA ACTA
(2021)
Article
Electrochemistry
Limin Zhu, Lulu Mo, Lingling Xie, Xiaoyu Cao
Summary: In this study, a simple and efficient synthetic route was developed to prepare LZO-LVPC composites by mechanically ball-milling. The composites showed improved electrochemical performance, with enhanced charge transfer and diffusion of Li+ compared to pristine LVPC. This synthetic method is convenient for large-scale production.
ELECTROCHEMISTRY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Zishan Ahsan, Shuai Wang, Zhenfei Cai, Yangzhou Ma, Guangsheng Song, Shihong Zhang, Weidong Yang, Cuie Wen
Summary: In this study, a dual-phase cathode material Li3V2(PO4)3-LiVOPO4 with excellent electrochemical performance was synthesized using different graphite addition approaches. The material prepared by in-situ compositing showed better cycling stability and high-rate performance.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Materials Science, Ceramics
Hsing- Hsiang, Bi -Ru Cai, Sheng-Heng Chung, Li-Wen Chu, Jing -Ru Tseng, Yue-Ming Shen
Summary: The monoclinic lithium vanadium phosphate (LVP) is a promising cathode material for lithium-ion batteries due to its high theoretical specific capacitance, high operating voltage, good ionic conductivity, and thermal stability. Synthesizing the pure LVP phase requires complicated procedures, but can be achieved through heat treatment of glass powder produced using the double crucible method. Carbon coating can improve the electrical conductivity and electrochemical properties of LVP.
CERAMICS INTERNATIONAL
(2023)
Article
Polymer Science
Lihuan Xu, Hao Xin, Chang Su
Summary: The study investigated a fibrous morphology cross-linking polyaniline as a cathode material for lithium-ion batteries, demonstrating good charge-discharge performance and stable cycling capacity. The cross-linking polyaniline still provided a high discharge specific capacity at a higher current density of 500 mA∙g(-1), showing excellent rate capabilities.
Article
Chemistry, Multidisciplinary
Jinshu Tong, Anyu Su, Teng Ma, Junjie Ba, Luyao Wang, Zeyu Zhang, Jingyi Qiu, Xibang Chen, Yizhan Wang, Yingjin Wei
Summary: Severe capacity degradation at low temperatures hampers the wide application of lithium-ion batteries in consumer electronics and electric vehicles. This study proposes a binary coating layer for the cathode material, which significantly improves the high-rate capability and low-temperature performance of batteries without changing the electrolyte formulation.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Environmental
Siyuan Chen, Ni Wen, Chunmao Huang, Youzhong Dong, Quan Kuang, Qinghua Fan, Yanming Zhao
Summary: This study demonstrates for the first time a feasible rechargeable organic nickel ion battery using an ether-based electrolyte, Li3V2(PO4)(3) as cathode, and nickel foam as anode materials. The battery exhibits high reversible specific capacity and stable cycle performance, and the reversible insertion and extraction of Ni2+ ions into the cathode structure are confirmed by experimental methods. Additionally, the reaction mechanism and structural changes during the cycle process are analyzed in detail using in-situ X-ray diffraction technology and Rietveld refinement.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Lenin W. Kum, Ashish Gogia, Nick Vallo, Deependra Kumar Singh, Jitendra Kumar
Summary: Lithium-ion batteries (LIBs) are widely used in modern electronics and electric vehicles due to their high energy and power densities, cycle-life, and safety. This study presents a simple method to improve the high-voltage charge capability of LIBs by applying an artificial cathode-electrolyte interface (Li+-ACEI) on the state-of-the-art cathode, LiCoO2 (LCO). The application of Li+-ACEI using a superionic ceramic Li+ ion conductor, lithium aluminum germanium phosphate (LAGP), results in reduced charge-transfer resistance, higher discharge capacity, higher Coulombic efficiency, and higher rate capability of the LCO cathodes.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Abdelwahed Chari, Karim El Ouardi, Marwa Tayoury, Mohamed Aqil, Brahim Orayech, Abdeslam El Bouari, Jones Alami, Mouad Dahbi
Summary: In this study, a Na3ZrCo(PO4)3 cathode material with high electrochemical performance was synthesized, providing guidance for enhancing the performance of sodium-ion batteries in the future.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Jiawei Zheng, Jianwen Yang, Jinmei Wu, Shengxian Li, Mengwen Wang, Bin Huang, Yanwei Li, Shunhua Xiao, Qing Zhu
Summary: Cathode materials LiFe0.5Mn0.5-xYxPO4@C (x = 0, 0.005, 0.01, 0.02, and 0.03) were synthesized and characterized. Y3+ doping led to volume shrinkage, carbon coating, and improved particle size and dispersion. The preferred LiFe0.5Mn0.49Y0.01PO4@C sample exhibited enhanced electrochemical performance with decreased polarization and improved ion diffusion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
