Article
Chemistry, Physical
Chi-Cheung Su, Jiayan Shi, Rachid Amine, Meinan He, Seoung-Bum Son, Juchen Guo, Meng Jiang, Khalil Amine
Summary: New fluorinated glycol ethers were synthesized in this research, which exhibit high anodic stability and excellent capability to dissolve lithium salt, making them compatible with high voltage cathode and enabling stable cycling of Li-metal batteries.
Article
Nanoscience & Nanotechnology
Chi-Cheung Su, Khalil Amine, Mei Cai, Meinan He
Summary: In order to choose a suitable fluorinated ether (FE) co-solvent for lithium metal batteries, the structure-activity relationship between different FEs and the electrochemical performance of FE-containing electrolytes was investigated. Experimental results showed that the cycling performance of Li||NMC622 cells using different FE co-solvents follows the order of FEE > TTE > OFDEE. The electrolyte with FEE co-solvent displayed improved low-temperature performance and stability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Chemistry, Multidisciplinary
Zhongzhe Li, Yufang Chen, Xiaoru Yun, Peng Gao, Chunman Zheng, Peitao Xiao
Summary: Lithium metal batteries have high energy density but their commercial application is hindered by safety issues and cycling stability. The use of fluorinated electrolytes as important components in these batteries has been widely investigated. The design strategies of fluorinated electrolytes, including fluorinated salts, solvents, and additives, are summarized to suppress lithium dendrites and improve anodic and cycling stability. Future design strategies and challenges for novel fluorinated electrolytes are proposed.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Tao Liu, Zhe Shi, Huajun Li, Weijiang Xue, Shanshan Liu, Jinming Yue, Minglei Mao, Yong-sheng Hu, Hong Li, Xuejie Huang, Liquan Chen, Liumin Suo
Summary: The research introduces a bifunctional fluorinated silane-based electrolyte with a density of 1.0 g mL(-1), which reduces lithium metal loss rate and extends the cycle life of lithium-sulfur batteries. Compared with conventional electrolytes, this electrolyte not only lowers the electrolyte/cell capacity ratio, but also enhances stability under limited lithium amounts.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Xueqin Song, Da Tian, Yue Qiu, Xun Sun, Bo Jiang, Chenghao Zhao, Yu Zhang, Lishuang Fan, Naiqing Zhang
Summary: An alloying strategy is proposed to enhance the adsorption of sulfur on transition metal catalysts, addressing the issue of sulfur poisoning. The Co-Te alloy catalyst shows excellent catalytic performance, improving the rate capability of sulfur redox reactions and suppressing the shuttle effect.
ENERGY STORAGE MATERIALS
(2021)
Review
Electrochemistry
Misganaw Adigo Weret, Wei-Nien Su, Bing Joe Hwang
Summary: This review provides an overview of the working principles and challenges of rechargeable lithium-sulfur batteries (LSBs). The strategies to overcome these challenges, such as electrode design and modification, development of novel electrolytes, separator modification/functional interlayer insertion, and protection of lithium anode are discussed. The review also summarizes the advanced in situ/operando characterization techniques used to understand the redox chemistries of LSBs. Finally, a summary and future perspective for the practical application of LSBs are provided.
BATTERIES & SUPERCAPS
(2022)
Article
Chemistry, Physical
Zhengyuan Shen, Qiaomeng Gao, Xuebing Zhu, Zhijie Guo, Keying Guo, Xiaosheng Song, Yong Zhao
Summary: The addition of fluorenone molecules in lithium-sulfur batteries can regulate the reaction pathway, improve the capacity and reaction kinetics of the batteries, and address the issue of low electrolyte/sulfur ratio.
ENERGY STORAGE MATERIALS
(2023)
Review
Engineering, Multidisciplinary
JiYue Hou, Ying Wang, WenHao Yang, Fei Wang, Dong Yang, YiYong Zhang, Feng Liang, Xue Li, YingJie Zhang, JinBao Zhao
Summary: MXenes are two-dimensional inorganic compounds actively investigated for their potential in high-performance lithium-sulfur batteries. Their large specific surface area, good conductivity, and excellent cycle and rate performance make them a promising candidate for future applications.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2022)
Article
Chemistry, Physical
Xianwei Geng, Chenguang Liu, Yi Sun, Yingchao Zhao, Ruowei Yi, Pengfei Song, Chun Zhao, Ivona Mitrovic, Li Yang, Cezhou Zhao
Summary: A Ti3C2Tx MXene-carbon nanocage-sulfur cathode with high conductivity and high sulfur content was synthesized for Li-S batteries, showing outstanding initial specific capacity and long-term cyclic performance. The introduction of CNC improved the cathode's specific surface area and conductivity, reducing MXene stacking and increasing sulfur utilization. This research has future technological significance in advancing lithium-sulfur batteries with high sulfur content and cost-effective conductive materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Fangyan Liu, Chuanxin Zong, Liang He, Zhaoyang Li, Bo Hong, Mengran Wang, Zhian Zhang, Yanqing Lai, Jie Li
Summary: In this study, a novel electrolyte additive (TFMSA) is introduced to stabilize the electrode/electrolyte interfaces and enhance the electrochemical performance of Li-S batteries. The results show that Li-S batteries with TFMSA-containing electrolyte exhibit excellent cycle performance and rate capability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Kunlun Nie, Qianqian Fu, Ruili Gao, Kunpeng Wang, Hui Wang, Chao Teng, Xuyun Wang, Jianwei Ren, Rongfang Wang
Summary: By introducing chloropyrazine-based electrolyte additives, a robust and smooth organic-inorganic hybrid solid-electrolyte interface enriched with LiCl was formed in lithium-sulfur batteries (LSBs). The additives effectively modulated the molecular orbital energy levels of LiPSs, improving high-rate performance and long-term cycling stability in LSBs. The study offers a promising direction for advanced electrolyte design in LSBs.
ENERGY STORAGE MATERIALS
(2023)
Article
Electrochemistry
Rebecca Glaser, Oleg Borodin, Billy Johnson, Samik Jhulki, Gleb Yushin
Summary: In this study, localized electrolytes based on fluorinated ethers with a total salt concentration of only 0.1 M were investigated for their performance in Li-S batteries. These electrolytes were found to suppress the formation of long-chain polysulfides, limit sulfur cathode dissolution, and improve active material utilization, leading to higher capacity and coulombic efficiency compared to traditional electrolyte solvent mixtures.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Roby Soni, Damiano Spadoni, Paul R. Shearing, Dan J. L. Brett, Constantina Lekakou, Qiong Cai, James B. Robinson, Thomas S. Miller
Summary: Using fibroin as an electrolyte additive can prevent Li dendrite formation and minimize active material loss in Li-S batteries, enabling high capacity and long cycle life. This work offers a route toward practical industrial applications of a viable Li-S battery system.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Liang Shen, Yun-Wei Song, Juan Wang, Chang-Xin Zhao, Chen-Xi Bi, Shu-Yu Sun, Xue-Qiang Zhang, Bo-Quan Li, Qiang Zhang
Summary: The Fe-Co-based dual-atom catalyst (DAC) is adopted to enhance the performance of Li-S batteries by accelerating the sulfur redox kinetics and improving the discharge capacity and rate performances. The unique structure of the dual-atom site allows synergistic effects and promotes the interactions with lithium polysulfides, resulting in high discharge capacity and excellent rate performances.
Article
Nanoscience & Nanotechnology
Shuixin Xia, Xun Zhang, Guangzhi Yang, Lvyunhui Shi, Le Cai, Yujie Xia, Junhe Yang, Shiyou Zheng
Summary: This study demonstrates a safe and scalable strategy to improve the performance of lithium-sulfur batteries by coating fluorinated carbon in the battery construction, enhancing the cycling lifespan and capacity retention. The fluorinated Celgard shows superior performance in modulating ion flux and trapping lithium polysulfides, providing a new approach for sustainable development of lithium-sulfur batteries.
ACS APPLIED MATERIALS & INTERFACES
(2021)
