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 Wang, Shijie Jiang, Yunjiao Li, Zhouliang Tan, Shuaipeng Hao, Jiachao Yang, Zhengjiang He
Summary: To overcome the challenges with LiMn2O4, a simple and effective strategy of incorporating WO2.72 into LMO has been proposed. The addition of WO2.72 induces the formation of oxygen vacancies, improves the adsorption and storage of active oxygen, and reduces the energy barrier for lithium ion migration. The formation of a Li2WO4 coating helps improve the electrode-electrolyte interface. The optimized W4000 sample demonstrates superior cycle performance compared to bare LMO.
JOURNAL OF POWER SOURCES
(2023)
Article
Materials Science, Ceramics
Jiatai Wang, Yuanyuan Li, Shishi Wei, Shunli Hou, Geng Zhou, Xiaocen Yan, Ruheng Xi, Xiaoyi Hou
Summary: Through doping B3+ using a high-temperature solid-phase method, the electrochemical properties of the LiNi0.815Co0.15Al0.035O2 cathode (NCA) were significantly improved. X-ray diffraction analysis and Rietveld refinement showed that B3+ enhanced lattice ordering by minimizing Li+/Ni2+ mixing. Scanning electron microscopy observations indicated that B3+ doping changed the particle morphology. The specific discharge capacities of 1.5% B-NCA were 178.31 and 123.74 mAhg 1 at 0.2 and 5C, respectively. After 100 cycles, the specific discharge capacity was 176.29 mAhg 1 at 0.2C with a capacity retention of 98.87%. Boron doping significantly improves the structural stability of nickel-rich cathode materials by suppressing the detrimental H2 & RARR;H3 phase transition, thus improving the electrochemical performance of nickel-rich ternary lithium-ion batteries.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Taymour A. Hamdalla, A. M. Aboraia, A. A. A. Darwish, S. A. Al-Ghamdi, S. Alfadhli, Alexander Soldatov
Summary: In order to improve the electrochemical performance of LiCoPO4 as a cathode in Lithium-ion batteries, a novel durable one-pot technique is proposed. Mil-88a metal-organic framework (MOF) nanoparticles are incorporated through LiCoPO4 synthesis to form a metal-carbon layer. The structure of the cathode is investigated using XRD, XRF, and TEM, and the electrochemical studies show an improved discharge-specific capacity of 138 mAhg(-1) in the first cycle.The Mil88a MOF provides a basis for metal atoms and carbon, increasing bulk conductivity.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Feng Jiang, Yaocai Bai, Limin Zhang, Wenqing Zhao, Peng Ge, Wei Sun, Xinghua Chang, Xiaobo Ji
Summary: Mineral-derived carbon-coated Cu5FeS4 anode material demonstrates outstanding performance in both sodium-ion and lithium-ion batteries, delivering high reversible capacity and superior long-term cycling performance. This work sheds light on potential energy storage applications for naturally abundant mineral-based materials.
ENERGY STORAGE MATERIALS
(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
Electrochemistry
Meng Yu, Jing Li, Xiaohui Ning
Summary: LiMnxFe1-xPO4 has competitive energy density and thermal stability, but its rate capability and capacity retention need to be improved. A hybrid layer of Li3VO4 and carbon was successfully coated on LMFP nanorods to enhance its performance. The modified LMFP shows excellent cycling stability and high discharge capacity even at high rates, providing a guideline for high-performance cathode materials.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Wen Xiao, Chenhui Wang, Jinli Zhang, You Han, Wei Li, Guili Guo
Summary: In this study, MoSi2-modified NCM613 materials were prepared using a solid-state method. Analysis revealed that a small amount of Mo from MoSi2 was doped into the NCM613 lattice, and the rest MoSi2 was coated on the material surface. The improved electrochemistry of NCM613 resulted from Mo doping and MoSi2 coating.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Jia-Xuan Cai, Yong-Xin Qi, Wei Liu, Yu-Jun Bai
Summary: An efficient hydrothermal method was used to modify Li2ZnTi3O8 (LZTO) with trithiocyanuric acid (TCA) in order to improve the fast-charging performance, long cycle life and safety of rechargeable Li-ion batteries. The hydrothermal and electrochemical processes resulted in different evolutions of the keto and enol TCA isomers. The TCA-modified LZTO demonstrated accelerated Li-ion migration and electron transfer, significantly enhanced rate capability and cycling stability.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Hanyong Wang, Jiao Lin, Xiaodong Zhang, Lecai Wang, Jingbo Yang, Ersha Fan, Feng Wu, Renjie Chen, Li Li
Summary: The study demonstrates that coating NCM cathode with polysiloxane can significantly improve cycling performance, with a capacity retention of 91.5% after 120 cycles, which is 1.3 times higher than pristine NCM.
ACS APPLIED ENERGY MATERIALS
(2021)
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
Nanoscience & Nanotechnology
Wei Shu, Zelang Jian, Jing Zhou, Yun Zheng, Wen Chen
Summary: Li-rich Mn-based layered compounds show promise as cathode materials for LIBs with low cost and high energy storage capacity. However, issues like capacity decay and poor rate performance can be addressed by surface modification with LLZO coating, which improves electrochemical performance by enhancing Li-ion diffusion and reducing side reactions at electrode/electrolyte interfaces. This provides an efficient way to design high-energy and stable LIBs with Li-rich Mn-based cathodes.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Electrochemistry
Hanyong Wang, Lecai Wang, Jiao Lin, Jingbo Yang, Feng Wu, Li Li, Renjie Chen
Summary: A hierarchically structured Li4Ti5O12 material with a conductive carbon coating was designed in this study to improve its electrochemical properties. By using hexadecyl trimethylammonium bromide and glucose as structure-guiding agent and carbon source, respectively, the material showed enhanced cycling stability and capacity retention.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Si-Dong Zhang, Mu-Yao Qi, Sijie Guo, Yong-Gang Sun, Ting-Ting Wu, Hong-Shen Zhang, Si-Qi Lu, Fanqi Meng, Qinghua Zhang, Lin Gu, Zhiwei Zhao, Zhangquan Peng, Hongchang Jin, Hengxing Ji, Ying-Rui Lu, Ting-Shan Chan, Ran Duan, An-Min Cao
Summary: A multifunctional shell of MgO/Li3PO4 was successfully fabricated on the surface of 4.6 V LiCoO2 cathode, which effectively stabilized the cathode by inhibiting interfacial side reactions and structure degradation. The shell not only prevented capacity decay but also improved Li+ transfer rate, leading to a high reversible capacity and outstanding rate capability.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Physical
Lukas Ibing, Tobias Gallasch, Vinzenz Goeken, Philip Niehoff, Martin Winter, Markus Boerner
Summary: Enabling aqueous processing of positive active materials and replacing toxicologically critical N-methyl-2-pyrrolidone can reduce the environmental and economic impact of lithium-ion battery production. Optimizing the use of additives and surfactants improves the distribution and interconnection of active/inactive materials, leading to superior battery performance and long-term cycling capacity retention.
ACS APPLIED ENERGY MATERIALS
(2022)
