Article
Nanoscience & Nanotechnology
Jongjung Kim, Venkata A. K. Adiraju, Nuwanthi Rodrigo, Jennifer Hoffmann, Martin Payne, Brett L. Lucht
Summary: The synthesis and application of lithium bis(trimethylsilyl) phosphate (LiTMSP) as a bifunctional additive for high-voltage LiNi1.5Mn0.5O4 (LNMO)/graphite cells were investigated. LiTMSP showed improved cycle performance and inhibited the generation of HF, reducing the dissolution of transition metal ions from the LNMO electrode. Additionally, LiTMSP derived surface film enhanced lithium ion conductivity and decreased resistance of the graphite electrode, leading to improved rate performance of LNMO/graphite cells.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Linda Quach, Egy Adhitama, Valentin Goeldner, Ankita Das, Feleke Demelash, Martin Winter, Uwe Karst, Tobias Placke, Frank Glorius
Summary: Film-forming electrolyte additives are crucial for the performance and safety of high-energy-density lithium-ion batteries. This study synthesized derivatives and conducted analyses to investigate the impact of molecular substrate parameters on battery performance. The research aims to enhance the fundamental understanding of influential substrate parameters and guide the design of electrolyte additives for high-energy-density lithium-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Sanghamitra Moharana, Geoff West, Marc Walker, Xinjie S. Yan, Melanie Loveridge
Summary: The addition of KPF6 in the electrolyte can promote the formation of a robust SEI layer, effectively inhibiting the growth of Li dendrites. The KPF6 additive can form a thin and durable SEI layer rich in LiF, which blocks the electron leakage pathways. Additionally, KPF6 additive can reside at defect sites, hindering the incoming of Li+ and restricting the growth of Li dendrites. Optimizing the electrode/electrolyte interphase by controlling the concentration of additives has implications for fast charging.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Ningbo Xu, Yiou Sun, Jingwen Shi, Junning Chen, Gaopan Liu, Ke Zhou, Huajin He, Jianping Zhu, Zhongru Zhang, Yong Yang
Summary: This study proposes a new fluorinated cyclic siloxane additive to enhance the cycling stability of high nickel cathodes and silicon carbon anodes in Li-ion batteries with high energy density, achieving significant capacity retention after cycling and improving the electrochemical stability.
JOURNAL OF POWER SOURCES
(2021)
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
Chemistry, Multidisciplinary
X. Dai, J. H. Song, J. E. Wang, X. Chen, D. K. Kim, D. J. Kim
Summary: Sulfide-based Li-argyrodite is a promising solid-state electrolyte candidate for all-solid-state batteries, but its chemical instability limits practical applications. Graphene fluoride can enhance the chemical stability of the electrolyte interface, resulting in improved cycling performance.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Faruk Okur, Yauhen Sheima, Can Zimmerli, Huanyu Zhang, Patrick Helbling, Ashling Fah, Iacob Mihail, Jacqueline Tschudin, Dorina M. Opris, Maksym V. Kovalenko, Kostiantyn V. Kravchyk
Summary: In this study, Li-ion conductive polysiloxane-based polymers were successfully synthesized and showed high ionic conductivity and Li+ ion transfer number, making them suitable for electrolyte applications in Li-ion batteries.
Article
Chemistry, Physical
Zouina Karkar, Mohamed S. E. Houache, Svetlana Niketic, Chae-Ho Yim, Yaser Abu-Lebdeh
Summary: In this work, the effect of newly synthesized polymeric borate ester (PBE) additives on the electrochemical performance of high-capacity silicon-graphite (Si-C) anode was investigated. The results showed that the PBE additive exhibited excellent electrochemical stability and improved battery performance in carbonate electrolyte solutions. The improvements in cycling performance were attributed to changes in electrode morphology and the formation of a stable solid electrolyte interface (SEI) layer.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Bo Tong, Ziyu Song, Huihai Wan, Wenfang Feng, Michel Armand, Jincheng Liu, Heng Zhang, Zhibin Zhou
Summary: This work provides an overview of the advances and progresses made in utilizing sulfur-containing additives in LIBs, focusing on the impact of four representative sulfur-containing compounds on electrode-electrolyte interphases and cell performances. Future developments in using sulfur-containing compounds as functional electrolyte additives are also discussed in this review.
Article
Chemistry, Physical
Jong Won Park, Doh Hee Park, Soohyun Go, Dae-Hyun Nam, Jihun Oh, Young-Kyu Han, Hochun Lee
Summary: In this study, a dual-functional electrolyte additive, lithium tetrafluoro(fluoromalonato)phosphate (LFMP), was synthesized to improve the thermal stability of LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode and graphite anode materials. LFMP additive showed excellent cyclability, storage performance, and mitigated gas evolution compared to its boron analog, lithium difluoro(fluoromalonato)borate (LFMB). The advantages of LFMP can be attributed to the superior cathode electrolyte interphase (CEI) and solid electrolyte interphase (SEI) layers derived from LFMP, which exhibit strong binding with O-2(center dot-) and weak binding with PF5, and favorable LiF formation.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jing Lian, Wei Guo, Yongzhu Fu
Summary: Benzenedithiols have been successfully used as electrolyte additives to limit the shuttle effect of lithium polysulfides in lithium-sulfur batteries, forming a stable solid-electrolyte interphase to enhance battery performance.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Wandi Wahyudi, Viko Ladelta, Leonidas Tsetseris, Merfat M. Alsabban, Xianrong Guo, Emre Yengel, Hendrik Faber, Begimai Adilbekova, Akmaral Seitkhan, Abdul-Hamid Emwas, Mohammed N. Hedhili, Lain-Jong Li, Vincent Tung, Nikos Hadjichristidis, Thomas D. Anthopoulos, Jun Ming
Summary: This study reveals the key role of additives in promoting cation desolvation, further demonstrating the importance of nitrate anions in improving battery performance.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Adjmal Ghaur, Christoph Peschel, Iris Dienwiebel, Lukas Haneke, Leilei Du, Laurin Profanter, Aurora Gomez-Martin, Martin Winter, Sascha Nowak, Tobias Placke
Summary: This study investigates the effect of fluorinated phosphazene compounds as electrolyte additives on the formation of the solid electrolyte interphase (SEI) in silicon oxide (SiOx)-based lithium-ion batteries. The results show that the dual-additive approach using fluoroethylene carbonate and hexafluorocyclotriphosphazene-derivatives (HFPN) in state-of-the-art electrolytes leads to synergistic effects, enhancing the electrochemical performance and stabilizing the electrolyte. Furthermore, using HFPN derivatives as an additive compound suppresses the decomposition of the electrolyte. This study is of great significance for improving the performance and practical application of lithium-ion batteries.
ADVANCED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Jian Zhang, Jiayan Shi, Leo W. Gordon, Nastaran Shojarazavi, Xiaoyu Wen, Yifan Zhao, Jianjun Chen, Chi-Cheung Su, Robert J. Messinger, Juchen Guo
Summary: Phosphorus pentoxide (P2O5) is found to be effective in removing acidic impurities in lithium ion battery electrolytes, leading to improved electrochemical performance. The modified electrolyte, compatible with both the lithium metal anode and cathode, forms a stable solid electrolyte interface (SEI) that prevents transition metal dissolution and cathode particle cracking, enabling highly reversible lithium deposition.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Saehun Kim, Sung O. Park, Min-Young Lee, Jeong-A Lee, Imanuel Kristanto, Tae Kyung Lee, Daeyeon Hwang, Juyoung Kim, Tae-Ung Wi, Hyun-Wook Lee, Sang Kyu Kwak, Nam-Soon Choi
Summary: The advancement of electrolyte systems has facilitated the development of high-performance Li metal batteries by creating robust electrode-electrolyte interfaces, which address the challenges of dendritic Li growth and irreversible Li plating/stripping. The application of specific electrode-electrolyte interface modifiers, LiNO3 and LiDFBP, have demonstrated improved cycle life and Coulombic efficiency for Li|NCM811 full cells.
ENERGY STORAGE MATERIALS
(2022)