Article
Materials Science, Composites
Yuanhang Hu, Lingchen Kong, Weiyu Li, Lidong Sun, Cong Peng, Mengmeng Qin, Ziyue Zhao, Yu Li, Wei Feng
Summary: In this study, a new type of CFX compound with improved electrochemical performance was obtained using porous carbon spheres as starting materials. The fluorinated microporous carbon spheres achieved a comparable specific capacity as that of the commercial fluorinated graphite. The spherical morphology and hierarchically porous structure promoted the diffusion of Li+ and the reaction with fluorinated active sites, leading to superior electrochemical performance.
COMPOSITES COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Cong Peng, Shixue Zhang, Lingchen Kong, Hang Xu, Yu Li, Wei Feng
Summary: Fluorinated carbon nanohorns with tailored C-F bonds achieved excellent battery performance, including high specific capacity, good conductivity, and outstanding energy density. This opens up new possibilities for designing carbon sources.
Article
Nanoscience & Nanotechnology
Zhenya Luo, Xiao Wang, Duanwei Chen, Qihong Chang, Shuhong Xie, Zengsheng Ma, Weixin Lei, Junan Pan, Yong Pan, Jianyu Huang
Summary: The synthesized 3D porous fluorinated graphene microspheres (FGS-x) exhibit high conductivity and a high F/C ratio, which contribute to increased discharge capacity, shortened diffusion length, enhanced intercalation kinetics, and volume change accommodation. The engineered fluorinated graphene has great potential in applications requiring high power density and high energy density.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Lei Chen, Yanyan Li, Chao Liu, Feifei Guo, Xiaozhong Wu, Pengfei Zhou, Zhiwen Fang, Jin Zhou
Summary: This paper investigates the effect of precursor structure of hard carbon on the structure and electrochemical performance of fluorinated carbon cathode materials. A series of fluorinated hard carbon materials are prepared using saccharides with different polymerization degrees as a carbon source, and their properties are studied. The results show that the specific surface area, pore structure, and defect degree of hard carbon are improved as the polymerization degree of the starting saccharide increases. Furthermore, the fluorinated glucose pyrolytic carbon exhibits good electrochemical properties.
Article
Chemistry, Physical
Jun Ban, Xingxing Jiao, Yangyang Feng, Jing Xue, Cheng He, Jiangxuan Song
Summary: A CFx-compatible fluorinated ether-containing electrolyte was introduced to improve the conductivity and wettability of Li/CFx batteries, resulting in enhanced electrochemical performance at high temperatures. The modified electrolyte containing TTE significantly increased the energy density of Li/CFx batteries, enabling high power and voltage outputs across a wide temperature range from -50 to 55 degrees C.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yukang Xiao, Xunxin Chen, Junhua Jian, Yong Cheng, Yue Zou, Yu Su, Qilong Wu, Chao Tang, Zhongru Zhang, Ming-Sheng Wang, Jianming Zheng, Yong Yang
Summary: This study successfully addresses the self-discharge challenges in Li||CFx batteries at high temperatures by utilizing NMP as the solvent and incorporating additional ingredients. The results show improved electrochemical performance and a low self-discharge rate, providing a new perspective for achieving high energy density and low self-discharge rates in Li||CFx batteries.
Article
Chemistry, Multidisciplinary
Yong Jun Gong, Seonmi Pyo, Hyunjin Kim, Jinil Cho, Heejun Yun, Heebae Kim, Seokgyu Ryu, Jeeyoung Yoo, Youn Sang Kim
Summary: The study successfully addressed the challenge of unstable solid electrolyte interphase (SEI) on a Li metal anode by applying graphene-coated aramid to the separator, inducing LiF formation through fluorinated metathesis on a conjugated carbon network. Additional experiments demonstrated the effectiveness of this method with other CCN materials, showing that negative functionalities and lattice structure of the materials played a role in the fluorination process.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Metallurgy & Metallurgical Engineering
Ning Wang, Zhen-ya Luo, Qing-feng Zhang, Jun-an Pan, Tong Yuan, Ying Yang, Shu-hong Xie
Summary: In this study, succinonitrile (SN) is used as an electrolyte additive to improve the discharge performance of CFx cathode at a wide temperature range. The addition of SN enhances the electrochemical performances by participating in the formation of solid electrolyte interphase, thus reducing the battery's electrochemical impedance. The electrolyte with 10% SN shows higher discharge platform and specific capacity at low temperature and enhances the discharge capacity of the battery at 0 degrees C.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2023)
Article
Chemistry, Physical
Fan Zhang, Yingying Lan, Renjie Li, Jianlin Wang, Shengxiang Wu, Lejuan Cai, Yu Zhao, Wenlong Wang
Summary: This study demonstrates an innovative method to improve the electron-transport properties and electrochemical kinetics of graphite fluoride by exfoliating it into quasi-2D flakes and constructing conductive networks. The newly designed graphite fluoride cathode outperforms conventional ones in terms of specific capacity at a high discharge rate.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Yukang Xiao, Junhua Jian, Ang Fu, Chao Tang, Yue Zou, Xunxin Chen, Jiuzhou Wang, Yong Yang, Jianming Zheng
Summary: In this work, a new electrolyte is designed to enhance the discharge performance of lithium parallel carbon fluoride (CFx) batteries by incorporating N,N-dimethylpropionamide (DMP) and propylene carbonate (PC). The nucleophilic DMP molecules in the electrolyte weaken the C-F covalent bond in CFx, leading to higher discharge voltage plateau and energy density.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Shengbo Jiang, Ping Huang, Jiachun Lu, Zhichao Liu
Summary: A novel fluorinated carbon material FKB with improved performance was prepared by gas-phase fluorination of ketjenblack, with an optimal fluorination temperature of 520 degrees Celsius. The FKB material exhibited high specific capacity and energy density, along with good rate capability, making it a promising candidate for practical applications in lithium primary batteries.
Article
Chemistry, Physical
Zhong Fang, Yang Yang, Tianle Zheng, Nan Wang, Congxiao Wang, Xiaoli Dong, Yonggang Wang, Yongyao Xia
Summary: The study optimized the PC/MB co-solvent formulation to improve the performance of CFx/Li batteries at high/low temperatures, revealing the mechanism of fast reaction and desolvation process. This enhanced the rate performance and capacity of the battery, while maintaining stability at high temperatures.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Physical
Jia Hou, Xinxia Yang, Xingguang Fu, Dawei Zou, Jun Ma, Yi Peng, Yifan Liu, Xian Jian
Summary: In this study, highly oriented carbon nanotube arrays (CNTAs) were used as cathode materials in Li/CFx batteries, demonstrating excellent electrochemical performances. The optimal cathode material FCNTA-500 exhibited high specific capacity and energy density at low discharge rates.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Alfonso Pozio, Mariasole Di Carli, Annalisa Aurora, Mauro Falconieri, Livia Della Seta, Pier Paolo Prosini
Summary: Activated hard carbons from waste biomasses were used as active materials for battery electrodes, showing good performance in lithium-sulfur and lithium-ion batteries.
Article
Chemistry, Physical
Quan Li, Weiran Xue, Xiaorui Sun, Xiqian Yu, Hong Li, Liquan Chen
Summary: The study discovered a novel and low-cost gaseous electrolyte additive BF3 that can significantly improve the rate capability of Li/CFx batteries, allowing for high power density and energy density at high discharge rates.
ENERGY STORAGE MATERIALS
(2021)
Article
Materials Science, Composites
Xuezhe Chen, Jiali Chen, Bin Shen, Wenge Zheng
Summary: In this study, high-performance EPEI/CNS composite foams were fabricated using subcritical foaming technology and CNS dip-coating. These composite foams exhibited efficient EMI shielding and high-temperature resistance with low CNS loading.
COMPOSITES COMMUNICATIONS
(2024)