Article
Materials Science, Ceramics
Ying-Jeng James Li, Wen-Chen Chien, Chia-Ju Tang, She-Huang Wu, Yi-Shiuan Wu, Chun-Chen Yang
Summary: In this study, Li-rich Li1.2Ni0.13Mn0.54Co0.13O2 (LMNCO) composite cathode material with hierarchical nano/micro-sphere structures was synthesized through a two-step spray-drying method. Surface modification with polyimide (PI) at different weight ratios improved the electrochemical properties of the LMNCO cathode, leading to enhanced cycle stability and discharge capacity. The PI-coated LMNCO composite cathode materials show potential for use in high-performance lithium-ion batteries.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Guozhen Zhu, Wenling Jiao, Qing Li, Yunhao Zhao, Xianhu Liu, Renchao Che
Summary: A hierarchical conductive optimization strategy was proposed to improve the rate capability of traditional TNO electrodes by fabricating highly conductive porous TNO@C/CNTs microsphere. The attached carbon materials on the TNO-based electrode significantly enhanced the conductivity and cyclic durability, leading to improved performances of LIBs.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Wei Zhong, Siwu Li, Mengchuang Liu, Ziqi Zeng, Shijie Cheng, Jia Xie
Summary: The self-sacrificing Li2C2O4 is a promising lithium replenisher with high specific capacity, residue-free and low-cost properties. However, its low electrochemical activity poses a challenge for the compatibility of electrolyte and cathode materials. In this study, a three-dimensional hierarchical spherical Mo2C/N-doped graphene co-catalyst is synthesized to enhance the reactivity of Li2C2O4 and accelerate the electron-ion transport.
Article
Chemistry, Physical
Zongyu Wang, Zhengguan Xu, Yapeng Yuan, Xinghe Teng, Zepeng Pu, Yangyang Wang, Aiping Fu, Yu-Guo Guo, Hongliang Li
Summary: The newly designed Si@TiO2@rGO pomegranate-shaped microspheres exhibit high strength and superior reversible capacity, showing excellent cycling stability under high current density conditions.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Zongyu Wang, Laiying Jing, Xiang Zheng, Zhengguan Xu, Yapeng Yuan, Xuehua Liu, Aiping Fu, Yu-Guo Guo, Hongliang Li
Summary: Novel 3D interpenetrating microspheres Si@C-CNTs, consisting of silicon nanoparticles interpenetrated with carbon nanotubes (CNTs) and bound with amorphous carbon (C), were designed and prepared. As an anode for lithium-ion batteries, Si@C-CNTs microspheres exhibit outstanding performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Ruhan He, Zhenhui Liu, Pan He, Wen Luo, Ruohan Yu, Xufeng Hong, Xuelei Pan, Qingqu Zhou, Liqiang Mai, Liang Zhou
Summary: This study successfully overcame the challenges faced by TiO2 under deep discharging/charging conditions by constructing three-dimensional macroporous TiO2 microspheres with interconnected pores and nanocrystalline thin walls through a scalable template-assisted spray drying method. The excellent discharge capacity and cyclic stability offer new possibilities for the application of lithium-ion batteries.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Engineering, Chemical
Jing Zhang, Jinshuo Qiao, Kening Sun, Zhenhua Wang
Summary: Particle properties play a crucial role in the performance of batteries, including particle size, distribution, and shape. Balancing the properties of electrode material particles is essential for achieving satisfactory comprehensive performance in lithium-ion batteries.
Article
Chemistry, Physical
Rajmohan Muthaiah, Fatema Tarannum, Swapneel Danayat, Roshan Sameer Annam, Avinash Singh Nayal, N. Yedukondalu, Jivtesh Garg
Summary: Efficient thermal coupling between graphene and polymer matrix is crucial for achieving high thermal conductivity polymer-graphene nanocomposites. In this study, edge-functionalization of graphene nanoplatelets is shown to enable a larger enhancement of thermal conductivity compared to basal plane functionalization. The anisotropy of thermal transport in graphene and the weak van der Waals bonding between layers contribute to the beneficial effect of edge bonding. This study provides a novel pathway for achieving high thermal conductivity polymer nanocomposites.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Gi Dae Park, Yun Chan Kang, Jung Sang Cho
Summary: Phase-pure ZnMn2O4 nanopowders and their aggregated microsphere powders were successfully obtained by a simple spray drying process followed by post-annealing. The optimized post-annealing temperature of 800 degrees C resulted in ZnMn2O4 nanopowders with high capacity and good cycle performance. The aggregated ZnMn2O4 microsphere exhibited improved cycle stability, with a capacity retention of 84% after the second cycle.
Article
Chemistry, Physical
Shuang Men, Jiajv Lin, Yuan Zhou, Xiongwu Kang
Summary: A facile and scalable strategy was developed to construct N-doped porous carbon framework wrapped FeSe2 composite as anode material for sodium ion batteries, showing remarkable performance and shedding light on the industrial production of high-performance sodium ion batteries.
JOURNAL OF POWER SOURCES
(2021)
Article
Engineering, Chemical
Aijun Di, Shengyu Zhang, Xuan Liu, Zhenbo Tong, Siping Sun, Zengchao Tang, Xiao Dong Chen, Winston Duo Wu
Summary: This study developed microparticles with improved solubility and antioxidant activity using resveratrol as a model drug. Chitosan played a key role in adjusting drug release behavior and enhancing mucoadhesion properties.
Article
Chemistry, Physical
Yining Ma, Dandan Zhu, Huaijuan Zhou, Yue Tang, Chenchen Hu, Xinyu Meng, Xiaodong Jin, Tongxiang Xu, Xun Cao
Summary: VO2(D) is considered a potential candidate for aqueous lithium-ion battery anodes. Submicron-spherical hierarchical structures of VO2(D) were successfully prepared using a template-free solvothermal method and demonstrated suitable working potential and cycling stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Jingzhu Zhou, Dongsheng Zhang, Tongtao Wan, Xingbo Wang, Guihua Liu, Yongguang Zhang, Jingde Li, Yanji Wang
Summary: This paper introduces a pomegranate-like Co-NC@G-CNTs composite material with large surface area and high porosity, which helps to distribute sulfur uniformly and improve electrochemical performance. The three-dimensional conductive network created by Co nanoparticles and CNTs enhances ion/electron transportation within the electrode, emphasizing the importance of CNTs in enhancing the electrochemical performance of three-dimensional sulfur cathodes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Hikari Watanabe, Shinya Omoto, Yoshinao Hoshi, Isao Shitanda, Masayuki Itagaki
Summary: In-situ electrochemical impedance spectroscopy (in-situ EIS) was used to study LiCoO2 electrodes with different particle sizes, revealing differences in impedance spectra during charge-discharge cycles. The charge transfer resistance during discharging was found to be larger than during charging, leading to observed hysteresis. The particle size and charge/discharge rate affected the magnitude of the hysteresis, demonstrating the utility of in-situ EIS for high-rate charge-discharge electrode materials.
JOURNAL OF POWER SOURCES
(2021)
Article
Engineering, Environmental
Huaibin Wang, Qinzheng Wang, Changyong Jin, Chengshan Xu, Yanhong Zhao, Yang Li, Chonglin Zhong, Xuning Feng
Summary: Lithium-ion batteries can undergo thermal runaway under certain conditions, releasing vapor, combustible gases, and high-temperature particles. These particle emissions can pollute the environment and enter the human biological chain, posing a potential threat to human health. This research analyzed the particle size, composition, morphology, and crystal structure of emissions from different cathode batteries after thermal runaway. The findings provide insights into the environmental and health risks associated with particle emissions from lithium-ion battery failures.
JOURNAL OF HAZARDOUS MATERIALS
(2023)