Review
Materials Science, Multidisciplinary
Xiao-Feng Zhu, Xiu Li, Tian-Quan Liang, Xin-Hua Liu, Jian-Min Ma
Summary: This review introduces the research progress on electrolyte modifications for LIBs with NCM811 cathode materials and discusses how they control the interface stability. Recommendations for further improvement of electrolyte stability and NCM811 electrochemical properties are summarized, proposing new design rules for high performance NCM811 cathode-based LIBs.
Article
Engineering, Environmental
Xue Ye, Jianneng Liang, Jiangtao Hu, Dazhuan Wu, Yongliang Li, Xiaoping Ouyang, Qianling Zhang, Xiangzhong Ren, Jianhong Liu
Summary: To achieve safe and high energy density solid-state batteries (SSBs), minimizing the weight of solid-state electrolyte (SSE) and using a high voltage and high specific capacity cathode are crucial. An ultra-thin blending polymer electrolyte (BPE) is designed by blending PEO, PMMA, and PVDF-HFP, and complexing with SN, FEC, and LiTFSI plasticizers. The BPE shows superior performance in terms of capacity retention, stability, and Coulombic efficiency, indicating its promising application in high energy density quasi-solid-state batteries (QSSBs).
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Zhipeng Jiang, Yu Deng, Jisheng Mo, Qingan Zhang, Ziqi Zeng, Yongtao Li, Jia Xie
Summary: This study proposes a strategy to enhance the high-voltage stability of medium-concentration ether electrolytes by altering the reaction pathway of ether solvents. By employing a 1 M lithium difluoro(oxalato)borate in dimethoxyethane (LiDFOB/DME) electrolyte, a stable organic-inorganic hybrid interface is formed, leading to improved cycling performance in lithium metal batteries. The optimized ether electrolyte demonstrates outstanding cycling performance in practical conditions.
Article
Chemistry, Physical
Zhuo Li, Suting Weng, Jialong Fua, Xiaoxue Wang, Xiaoyan Zhou, Qinghua Zhang, Xuefeng Wang, Lu Wei, Xin Guo
Summary: A nonflammable quasi-solid electrolyte with high conductivity and wide electrochemical window is prepared. The electrolyte can capture solvents to form a protective layer on electrodes, suppressing side reactions and electrode dissolution.
ENERGY STORAGE MATERIALS
(2022)
Review
Chemistry, Physical
Hao Jia, Wu Xu
Summary: With the increasing energy density of state-of-the-art LIBs, the flammability of liquid electrolytes has become a critical concern, leading to intensive efforts to find ways to suppress flammability.
CURRENT OPINION IN ELECTROCHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Zhongsheng Wang, Chunlei Zhu, Jiandong Liu, Xinhong Hu, Yulu Yang, Shihan Qi, Huaping Wang, Daxiong Wu, Junda Huang, Pengbin He, Jianmin Ma
Summary: Tailoring the inorganic components of the CEI and SEI in lithium metal batteries is crucial for improving their cycling performance. By using PFBNBS as an electrolyte additive guided by functional groups, the species and inorganic content of the CEI/SEI are enriched with a gradient distribution. Furthermore, the catalytic effect of the NCM622 cathode on the decomposition of PFBNBS is proposed. This tailored electrolyte enables the formation of an inorganic-rich CEI on NCM622 and an increased inorganic content in the SEI, leading to superior electrochemical performance and inhibiting electrolyte decomposition.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Changjun Wu, Yu Wu, Xiaodong Xu, Dongsheng Ren, Yalun Li, Runze Chang, Tao Deng, Xuning Feng, Minggao Ouyang
Summary: Concerns about thermal safety and high-voltage stability have hindered the commercialization of lithium-ion batteries with NCM811 cathodes. However, by enhancing the cathode structure and optimizing the electrolyte formula, a high-voltage lithium-ion battery has been developed that demonstrates both safety and reliability.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Jinhyeok Ahn, Jinsol Im, Hyewon Seo, Sukeun Yoon, Kuk Young Cho
Summary: This study proposes the use of 2,4-difluorobiphenyl (FBP) as a fluorine-based cathode electrolyte interphase (CEI)-forming additive for Ni-rich LiNi0.83Co0.11Mn0.06O2 (NCM83), which enhances cycling stability at high cut-off voltages and promotes the formation of a stable CEI layer on the surface. The results demonstrate the potential of introducing a fluorine component to existing additives for the development of new functional additives in lithium-ion battery applications.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Fanjue Wen, Shuai Cao, Xin Ren, Yuliang Cao, Xinping Ai, Fei Xu
Summary: In this study, a nonflammable electrolyte was designed for lithium-ion batteries, which achieve high performance and stable cycling through modulation of Li+ solvation structure. Furthermore, a dual-salt strategy was proposed to enhance the performance of the battery, and the functions and relationship of Li+ solvation structure and electrode/electrolyte interphase were elucidated.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Gaoxue Jiang, Jiandong Liu, Jian He, Huaping Wang, Shihan Qi, Junda Huang, Daxiong Wu, Jianmin Ma
Summary: This study proposes a novel electrolyte additive to optimize the electrode electrolyte interface and address the issues caused by high voltage. The additive can form a dense and stable solid electrolyte interphase, suppress the growth of lithium dendrites, and enhance lithium ion transport efficiency. Additionally, it can protect the electrolyte interface from corrosion. Experimental results demonstrate that lithium batteries using this electrolyte exhibit improved cycling life and energy density under high voltage.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Physical
Li Wang, Xiangming He
Summary: Electrolyte plays a crucial role in the electrochemical performance and safety of batteries. Pseudoconcentrated electrolyte, with nonflammable solvents as diluent, shows great potential for high safety and high energy density secondary batteries.
CURRENT OPINION IN ELECTROCHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Xiaoying Fan, Peng Chen, Xu Yin, Ruo-Xuan Qi, Chao Yang, Ya-Jun Cheng, Kunkun Guo, Cuirong Liu, Yonggao Xia
Summary: By incorporating PDMS binder into the electrode, the electrode-electrolyte interface of lithium-ion batteries can be stabilized at high voltage, leading to improved cycling performance and rate performance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Tianpeng Jiao, Gaopan Liu, Yue Zou, Xuerui Yang, Xiaozhen Zhang, Ang Fu, Jianming Zheng, Yong Yang
Summary: The research reveals that a stable CEI layer formed on the LiNi0.9Co0.05Mn0.05O2 cathode material through the addition of TMSFS multifunctional additive can significantly improve the cycling performance and electrochemical performance of lithium-ion batteries.
JOURNAL OF POWER SOURCES
(2021)
Article
Energy & Fuels
Lan Xia, He Miao, Fu Wang, Chunfei Zhang, Jiatang Wang, Jiapei Zhao, Jinliang Yuan
Summary: The study found that electrolytes with TTE and HFPM as cosolvents exhibit significantly improved cycling and rate properties for Li/NCM811 cells cycled between 2.7 and 4.3 V, compared to FEC-based electrolyte solutions without a fluorinated ether cosolvent.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Yuwan Dong, Panzhe Su, Guanjie He, Huiling Zhao, Ying Bai
Summary: A compatible interface was constructed between LiCoO2 and Li7La3Zr2O12 through surface modification strategy, significantly improving the cycling stability of LCO at high cut-off voltage.
Article
Electrochemistry
Jinmin Kim, Yongku Kang, Seung-Wan Song, Jungdon Suk
ELECTROCHIMICA ACTA
(2019)
Article
Chemistry, Multidisciplinary
Jisoo Han, Gyeong Jun Chung, Seung-Wan Song
Article
Nanoscience & Nanotechnology
Gyeong Jun Chung, Jisoo Han, Seung-Wan Song
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Electrochemistry
Jaehee Kim, Hieu Quang Pham, Gyeong Jun Chung, Eui-Hyung Hwang, Young-Gil Kwon, Seung-Wan Song
Summary: Raising the cut-off voltage of lithium-ion battery can increase cathode capacity and energy density but requires higher electrolyte and interface stability. Using a high-voltage additive is a promising and economical approach to mitigate stability issues associated with high cut-off voltage.
ELECTROCHIMICA ACTA
(2021)
Article
Electrochemistry
Yen Hai Thi Tran, Jisoo Han, Seung-Wan Song
Summary: For the first time, a lithium metal plating-free and unprecedented high-performance graphite parallel to LiNi0.8Co0.1Mn0.1O2 (NCM811) full-cell under subzero-temperature of -10 degrees C and high-voltage of 4.45 V has been reported through the construction of robust solid electrolyte interphase (SEI) layers at both anode and cathode. The performance failure of commercial electrolyte-based full-cell under subzero-temperature operation is attributed to lithium metal plating at graphite anode and irreversible phase transformation of NCM811 to disordered H3 phase with a large volume contraction. The study clearly demonstrates the importance of anode-electrolyte and cathode-electrolyte interfacial stabilization, bulk structural stabilization of both anode and cathode, and highly reversible cycling performance under subzero-temperature.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Kihun An, Yen Hai Thi Tran, Sehyun Kwak, Jisoo Han, Seung-Wan Song
Summary: By utilizing a novel electrolyte design with fire-resistant materials and additives, a safe and high-performance lithium-ion battery has been developed, showcasing higher energy density and longer cycle life.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Sehyun Kwak, Kihun An, Yen Hai Thi Tran, Seung-Wan Song
Summary: Battery safety is increasingly important for consumer's safety. Traditional liquid electrolyte is highly flammable, and the development of non-incendive electrolyte is crucial for safe lithium-ion batteries. A non-incendive liquid electrolyte containing fluorinated linear sulfate was found to improve the performance and safety of batteries.
Article
Engineering, Environmental
Gyeong Jun Chung, Yen Hai Thi Tran, Jisoo Han, Koeun Kim, Yoon Sung Lee, Seung-Wan Song
Summary: This article investigates the influence of electrolyte additives on the performance of lithium-ion batteries, and proposes a novel additives-package design to enhance the capacity and performance. The results demonstrate the synergistic effects of individual additives in forming stable solid electrolyte interphase layers on both the cathode and anode, leading to improved battery capacity and retention. The proposed additives-package offers a promising approach for long-cycle high-energy lithium-ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Minha Yee, Kihun An, Dan-Thien Nguyen, Hyea Won Yun, Jinkyu Park, Jungdon Suk, Seung-Wan Song
Summary: In this study, a unique design concept of confining nonflammable liquid in solid polymer electrolyte was demonstrated, enabling high cathode loading in solid-state batteries. The nonflammable liquid enhanced ion conductivity, improved interfacial wetting, and reduced interfacial resistance, resulting in higher discharge capacity and cycling performance.
MATERIALS TODAY ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Kihun An, Myeong Jun Joo, Yen Hai Thi Tran, Sehyun Kwak, Hyung Gi Kim, Chang Soo Jin, Jungdon Suk, Yongku Kang, Yong Joon Park, Seung-Wan Song
Summary: A novel electrolyte formulation is reported, which includes trace-level PFPA combined with FEC additives, and a SEI stabilization method. This method enables dendrites-free Li-metal anode and achieves unprecedented ultrafast charging and high stability of Li-ion batteries under extreme conditions. This study provides a potential concept for ultrafast charging, long-cycled, and safer high-energy Li-metal batteries and Li-ion batteries.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Min-Geun Oh, Sehyun Kwak, Kihun An, Yen Hai Thi Tran, Dong Guk Kang, Seong Jun Park, Guntae Lim, Koeun Kim, Yoon Sung Lee, Seung-Wan Song
Summary: The study proposes a new fluorinated additive, icosafluoro-15-crown 5-ether, which effectively reduces the swelling issue of the silicon anode in lithium-ion batteries, improves stability, and significantly reduces manufacturing cost. The additive also stabilizes the nickel-rich oxide cathode in high-capacity cells. When used together with a decreased fraction of FEC, reversible cycling for 300 cycles at high voltage and high rate was achieved. Material characterization results reveal that the stabilization is derived from the passivation of both anode and cathode surfaces.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Kihun An, Dokyung Kim, Yen Hai Thi Tran, Dung Tien Tuan Vu, Seong Jun Park, Jiyoung Heo, Young Joo Lee, Seung-Wan Song
Summary: A new class of weakly binding all linear molecules-based nonflammable electrolyte (WNLE) is reported, which promotes diffusion kinetics and desolvation kinetics of Li+ in the vicinity of graphite anode enabling dendrites-free LIB, along with nonflammability.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Dan-Thien Nguyen, Raymond Horia, Alex Yong Sheng Eng, Seung-Wan Song, Zhi Wei Seh
Summary: Magnesium-sulfur (Mg-S) batteries offer low cost, sustainable, and high capacity materials, with safer operation compared to lithium batteries, but face challenges such as self-discharge and rapid capacity loss. Advanced material design strategies are needed to address these issues.
MATERIALS HORIZONS
(2021)
Article
Chemistry, Multidisciplinary
Hieu Quang Pham, Eui-Hyung Hwang, Young-Gil Kwon, Seung-Wan Song
CHEMICAL COMMUNICATIONS
(2019)