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
Materials Science, Ceramics
Bing Huang, Meng Wang, Guodong Xu, Lin Hu, Lin Chen, Yijie Gu
Summary: The study found that doping La into the lithium-rich cathode material improved capacity retention rate, rate capability, and Li+ diffusion coefficient. The presence of La stabilized the material structure, induced the formation of spinel phase, and provided additional diffusion channels for lithium ions. Additionally, the porous structure of the doped samples contributed to the excellent electrochemical performance.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Jiliang Wu, Hui Li, Yutao Liu, Yu Ye, Yifu Yang
Summary: The use of HEPES treatment and heat treatment can improve the performance of LLO materials by creating oxygen vacancies and spinel phase coating. The HEPES-treated LLO material shows excellent performance in terms of coulombic efficiency, discharge capacity, rate performance, and cycling stability after optimization.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Nanoscience & Nanotechnology
Mingyue Gao, Yangyang Wang, Shaolun Cui, Sheng Liu, Xue-Ping Gao, Guoran Li
Summary: This article introduces a method for improving the energy density of Li-ion batteries by using an organic acid modification layer to address the surface and interface issues of Ni-rich layered oxides, thereby improving structural stability, mechanical integrity, and capacity retention.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Chao Wu, Shuang Cao, Xin Xie, Changmeng Guo, Heng Li, Zhi Li, Zihao Zang, Baobao Chang, Gairong Chen, Xiaowei Guo, Tianjing Wu, Xianyou Wang
Summary: In this study, a high-performance Co-free lithium-rich cathode material was successfully prepared, which showed high discharge capacity, excellent cycling stability, and outstanding performance even at high rates after fluorine doping. This work provides a meaningful exploration for the development of Co-free lithium-rich cathode materials.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Taolin Zhao, Jiangang Shen, Rixin Ji, Yueting Zhang, Yuhua Wang
Summary: In this study, the modification of Li[Li0.2Ni0.2Mn0.6]O-2 cathode material by lithium-ion conductor (Li2ZrO3) has successfully increased the first charge/discharge specific capacities and improved rate capability. Li2ZrO3, as a fast lithium-ion conductor with good chemical stability, can enhance the specific capacity and structure stability of the Li-rich material.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
M. A. A. Mohamed, L. Singer, H. Hahn, D. Djendjur, A. Oezkara, E. Thauer, I. G. Gonzalez-Martinez, M. Hantusch, B. Buechner, S. Hampel, R. Klingeler, N. Graessler
Summary: In this study, an antiperovskite (Li2Fe)SeO material was synthesized using a one-step solid-state method. The material showed excellent thermal stability and high cycling performance, making it a promising cathode material for lithium-ion batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Changkun Song, Wangjun Feng, Zhaojiao Shi, Zhaoyu Huang
Summary: In this study, layered cathode material Li1.2Mn0.54Ni0.13Co0.13O2 was prepared using the sol-gel method and then coated with TiO2 nanoparticles. The coated materials showed improved structure and morphology, leading to significant enhancement in electrochemical performance.
Article
Chemistry, Analytical
Aleksandr V. Ivanishchev, Su-Hyun Lee, Jae-Joong Kim, Irina A. Ivanishcheva, Sang-Cheol Nam, Jung-Hoon Song
Summary: The article investigates the influence of particle surface treatment on the electrochemical characteristics of Ni-rich layered oxide materials for lithium-ion battery cathodes. Structural, morphological, and electrochemical methods were applied to study the material's characteristics. X-ray diffraction and scanning electron microscopy were used to determine the structural and morphological properties. Electrochemical methods, such as GITT and EIS, were used to analyze charge transfer processes and diffusion coefficients of lithium ions.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Junxiang Liu, Jiaqi Wang, Youxuan Ni, Jiuding Liu, Yudong Zhang, Yong Lu, Zhenhua Yan, Kai Zhang, Qing Zhao, Fangyi Cheng, Jun Chen
Summary: This study reveals that the compositions of cathode electrolyte interphases (CEIs) are mainly controlled by abundant species in the inner Helmholtz layer (IHL), and the properties of CEIs can be modulated by adding coating materials, thus improving the cycling stability of batteries.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Nanoscience & Nanotechnology
Yongqiang Shi, Yilin Lin, Fangyuan Kang, Naoki Aratani, Weiwei Huang, Qichun Zhang
Summary: Organic cathode materials have diverse structures and tunable properties, making them attractive for rechargeable lithium-ion batteries. However, it remains challenging to prepare organic cathode materials with high capacities, long cycling life, and high energy densities. In this study, a novel multinitro-decorated organic small molecule was designed and synthesized, which showed promising performance as a cathode candidate for lithium-ion batteries. The introduction of multiple nitro groups effectively reduced the solubility of the molecule in organic electrolytes, resulting in high specific capacity and stable cycling.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Najeeb Ur Rehman Lashari, Mingshu Zhao, Jun Wang, Xinhai He, Irfan Ahmed, Miaomiao Liang, Songpon Tangsee, Xiaoping Song
Summary: In this study, vanadium pentoxide modified with graphene was used as an anode material in an aqueous rechargeable sodium-ion battery, showing improved battery performance with higher charge-discharge capacity and cyclic capacity retention. V2O5@G exhibited larger sodium storage capacity, enhanced rate capability, increased Na+ diffusivity, and reduced electrochemical reaction resistance, indicating its potential as a promising electrode material for ARSBs.
Article
Materials Science, Multidisciplinary
Jianlian Liu, Chaojun Du, Lingli Zou, Peisuo Li
Summary: Ti3C2Tx MXene shows great potential as anode material for lithium-ion batteries (LIBs). However, its low initial coulombic efficiency (ICE) and cycling performance due to inner defects. In this study, TiO2 nanoparticles are grown in these defects, effectively suppressing solid electrolyte interface (SEI) layer growth and improving electrode stability. As a result, the TiO2/Ti3C2Tx composite exhibits excellent electrochemical properties, including a high ICE of 82.5% at 100 mA g-1 compared to 66.8% for Ti3C2Tx. Moreover, the TiO2/Ti3C2Tx composite maintains a stable discharge capacity of 282.3 mAh/g at 100 mA g-1 for 200 cycles with a high-capacity retention of 81.2% and achieves a high discharge capacity of 187.4 mAh g-1 at 2000 mA g-1. This work provides an effective approach to enhance the electrochemical performance of Ti3C2Tx MXene.
Article
Chemistry, Physical
Dezhou Zheng, Xiaokang Pei, Hai Lin, Hongwei Tang, Yin Song, Qi Feng, Guangxia Wang, Wei Xu, Fuxin Wang, Xihong Lu
Summary: This study reports a one-pot hydrothermal method to enhance the zinc-ion storage capacity and rate capability of V3O7 nanoribbons by introducing divalent calcium ions. The Zn//CVO battery based on the modified V3O7 nanoribbons exhibited satisfactory capacity, excellent rate performance, good cycle life, high energy density, and peak power density.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Electrochemistry
David Kitsche, Florian Strauss, Yushu Tang, Nikolai Bartnick, A-Young Kim, Yuan Ma, Christian Kuebel, Juergen Janek, Torsten Brezesinski
Summary: Inorganic solid-state batteries have limitations compared to conventional liquid electrolyte-based lithium-ion batteries. The search for advanced coatings to protect the cathode materials in solid-state batteries is a challenge. This study successfully modified the surface of a Ni-rich cathode material using a sol-gel chemistry method, resulting in improved protection and performance.
BATTERIES & SUPERCAPS
(2022)