Article
Materials Science, Multidisciplinary
Lingjiang Kou, Jiajia Song
Summary: This study successfully synthesized a novel NH4V3O8 rectangular nanotube via a one-pot solvothermal method, and systematically investigated the effects of different solvents on the morphology and nanosize of the material. The NH4V3O8 rectangular nanotube exhibited excellent electrochemical performance in lithium ion batteries, showing a high reversible capacity and good capacity retention rate, providing a feasible method for the synthesis of high-performance electrode materials.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
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
Chemistry, Physical
Jay Singh, Seulgi Lee, Priya Yadav, Sungjin Kim, Jaekook Kim, Alok Kumar Rai
Summary: In this study, a hydrothermal synthesis method was used to produce a mulberry-like mesoporous CoMoO4 anode material with improved electrochemical properties for lithium ion and sodium ion batteries. The unique morphology of the CoMoO4 material led to high reversible discharge capacity and long cycle stability, making it a promising alternative high-performance anode material for sodium ion battery applications.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Wenxiu Hou, Chao Yan, Panrun Shao, Kun Dai, Jun Yang
Summary: This study investigates the application of Prussian blue analogues (PBAs) as electrode materials for aqueous ammonium ion batteries (AAIBs). A PANI/Na0.73Ni[Fe(CN)(6)](0.88) hybrid (PNFF) is synthesized using a covalent bond assisted engineering with in situ polyaniline (PANI) polymerization, combining the high conductivity of PANI and the stability of PBAs. It is found that the PANI content affects the electrochemical performance of PNFF, and an optimized PANI content results in enhanced reversible capacity and cycling stability. The ammonium storage mechanism of PNFF is investigated using in situ Raman and ex situ XPS/FTIR analysis, and a durable aqueous NH4+ full cell is assembled using a polyimide@MXene anode.
Article
Nanoscience & Nanotechnology
Ningjing Luo, Lianggang Feng, Huimin Yin, Andreas Stein, Shuping Huang, Zhufeng Hou, Donald G. Truhlar
Summary: This study investigates the effect of Mn substitution on the oxygen redox mechanism in Li-excess transition metal-oxide cathode materials and finds that Mn substitution effectively inhibits the formation of peroxo and superoxo species. The results provide important insights for the design of high-capacity lithium-ion battery cathode materials.
ACS APPLIED MATERIALS & INTERFACES
(2022)
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
Nanoscience & Nanotechnology
Yuan Zhang, Jiahao Xu, Shaoxiong Fu, Yuhan Bian, Yaping Wang, Li Wang, Guangchuan Liang
Summary: A series of Li2SiO3-coated LiNi0.5Mn1.5O4 materials were prepared to alleviate rapid capacity decay. The coating thickness was controlled by adjusting the amount of TEOS and lithium acetate. The material with an appropriate thickness exhibited improved structural and electrochemical properties, including larger primary particle size and reduced secondary particle agglomeration, enhanced Li+ ion diffusion kinetics, suppressed side reactions and CEI growth, and reduced electrode corrosion and transition metal ion dissolution through interaction with HF.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Sangjun Kim, Sanghyuk Park, Minsang Jo, Mincheol Beak, Jangho Park, Goojin Jeong, Ji-Sang Yu, Kyungjung Kwon
Summary: The study synthesized cathode active materials with varying Al content and examined the effects on physicochemical, thermal, and electrochemical properties. Results showed that increased Al content in the materials led to irregular particle shape and distribution, reduced initial charge/discharge capacity and cyclability, but improved rate capability. Residual Al was found to adversely affect capacity and cyclability, suggesting that trace amounts of Al in the materials can be tolerated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Electrochemistry
Juho Valikangas, Petteri Laine, Marianna Hietaniemi, Tao Hu, Marcin Selent, Pekka Tynjala, Ulla Lassi
Summary: This article presents a process for producing LiNi1-xAlxO2 (0 < x < 0.05) cathode material with high capacity and enhanced cycle properties. The cathode material is prepared by mixing coprecipitated Ni(OH)(2) with LiOH and Al(OH)(3), followed by lithiation and washing process. The electrochemical performance and structure changes of the cathode material are investigated through full-cell and half-cell applications, as well as different material characterization methods.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Chemistry, Physical
M. Jayachandran, Helen Annal Therese, T. Vijayakumar
Summary: The Lithium and Manganese-rich layered oxides with the formula Li1.2Ni0.1Mn0.6Co0.1O2 (LMR-NMC) are considered highly promising cathode materials for next-generation lithium-ion batteries due to their high energy densities, low cost, high thermal stability, and environmental safety. This study synthesized LMR-NMC oxides with different morphologies and analyzed their crystal structures and electrochemical properties. The nanoplatelet-like morphology (LMR-NMC-A) exhibited better performance than the cubic-like morphology (LMR-NMC-B). These findings confirm the suitability of nanoplatelet-like LMR-NMC-A as a cathode material for lithium-ion batteries.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Environmental
Rasu Muruganantham, Tzu-Hsin Tseng, Meng-Lun Lee, Soorathep Kheawhom, Wei-Ren Liu
Summary: This study proposes a method of plasma-modified TiN to improve the electrochemical performance and stabilize the cathode-electrolyte interface reaction of Ni-rich LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode material. The physicochemical properties, Li storage performance, and factors for improving the electrochemical performance were systematically investigated. The NCM811-TiN/graphite pouch cell showed high reversible capacity and cycle stability without changing the bulk structure and morphology, facilitating the practical use of safe and high-energy-density Li-ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Electrochemistry
Xin Liu, Zhengguang Zou, Jianying Meng, Shuchao Zhang, Shenglin Zhong, You Li
Summary: In this study, a V6O13 micro-flower was successfully synthesized via a facial hydrothermal method. The effects of oxalic acid concentration and subsequent calcination temperature on the crystallinity and microstructure of V6O13 were investigated. The optimal amount of reducing agent and calcination temperature were determined, and the electrochemical properties of the cathode materials were further explored. The results demonstrated that the V6O13 cathode exhibited excellent electrochemical performance when paired with a Li anode.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2022)
Article
Chemistry, Physical
Sung-Beom Kim, Hyeona Kim, Deok-Hye Park, Ji-Hwan Kim, Jae-Hoon Shin, Jae-Sung Jang, Sang-Hyun Moon, Jin-Hyuk Choi, Kyung-Won Park
Summary: Ni-rich cathode materials doped with varying amounts of F using a solid-state reaction method show improved cycling performance due to strong bonding between transition metals and F, as well as enhanced Li+ ion transport behavior. However, when the F doping level exceeds the optimal amount, Li/Ni antisite defects cause deteriorated Li+ ion transport, leading to decreased performance in lithium-ion batteries.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Inorganic & Nuclear
Jiang Wu, Yaqiang Yang, Ruitong Guo, Huiting Zhu, Xingyao Wang
Summary: The quasi-spherical beta-LiFe5O8 nanoparticles were successfully synthesized via a hydrothermal stripping route using Fe3+ and lithium hydroxide as raw materials. The samples prepared at a Li/Fe ratio of 15 and 150 degrees Celsius exhibited a high initial discharge capacity of 200.0 mAh/g, showing promising potential for practical applications in cathode materials. The reuse of organic extractants and residual aqueous solutions in the synthesis process also highlights the environmental sustainability of this method.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Xi Zhang, Gaofeng Li, Junxiao Wang, Jun Chu, Feng Wang, Zijun Hu, Zhiping Song
Summary: Poly(o-phenylenediamine) has been identified as a promising cathode material for lithium batteries, with PoPDA-H synthesized at high temperature showing better performance and potential for practical application in energy storage devices.
ACS APPLIED MATERIALS & INTERFACES
(2022)
