Article
Nanoscience & Nanotechnology
Fujuan Han, Zenghua Chang, Rennian Wang, Fengling Yun, Jing Wang, Chenxi Ma, Yi Zhang, Ling Tang, Haiyang Ding, Shigang Lu
Summary: LiNi0.8Mn0.1Co0.1O2||SiOx@graphite (NCM811||SiOx@G)-based lithium-ion batteries (LIBs) with the addition of p-tolyl isocyanate (PTI) and 4-fluorophenyl isocyanate (4-FI) in the electrolytes show improved low-temperature performance. Theoretical calculations and experimental results reveal that both PTI and 4-FI can generate stable SEI on the electrode surface and reduce the interfacial impedance. However, 4-FI is more effective in enhancing the low-temperature performance of the battery due to the optimization of F in the SEI membrane components.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Yu-Hsing Lin, Liang-Ting Wu, Yu-Ting Zhan, Jyh-Chiang Jiang, Yuh-Lang Lee, Jeng-Shiung Jan, Hsisheng Teng
Summary: Lithium-metal batteries with limited-Li anodes are crucial for high-energy storage. We engineer the self-assembly formation of solid-electrolyte interphase (SEI) in a gel polymer electrolyte (GPE) to control Li-deposition behavior and enhance reversibility.
ENERGY STORAGE MATERIALS
(2023)
Article
Engineering, Environmental
Nayoung Kang, Hyeon-Woo Yang, Woo Seung Kang, Sun-Jae Kim
Summary: This article analyzed the impact of electrochemical processing parameters on the formation of uniform and dense monolithic solid electrolyte interface (SEI) at Ti-SiOx@C anode, and explored its improvement on initial Coulombic efficiency and cyclic stability. The research found that the microstructure and morphology of SEI were strongly influenced by the current density and duration applied during initial charging of the electrode. By applying a certain charge amount at high current density, a monolithic SEI could be formed, leading to significantly improved initial Coulombic efficiency and cyclic stability of the battery.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Yi-Fan Tian, Shuang-Jie Tan, Zhuo-Ya Lu, Di-Xin Xu, Han-Xian Chen, Chao-Hui Zhang, Xu-Sheng Zhang, Ge Li, Yu-Ming Zhao, Wan-Ping Chen, Quan Xu, Rui Wen, Juan Zhang, Yu-Guo Guo
Summary: This study focuses on optimizing the anion-solvent interactions in ether-based electrolytes to improve the stability of both pure-SiOx anodes and LiNi0.8Mn0.1Co0.1 O2 cathodes. The optimized electrolyte enables stable cycling performance over 500 cycles in a full cell, demonstrating its practical prospects for high-energy density lithium-ion batteries.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Nanoscience & Nanotechnology
Lin Han, Tiefeng Liu, Ouwei Sheng, Yujing Liu, Yao Wang, Jianwei Nai, Liang Zhang, Xinyong Tao
Summary: Silicon is promising for lithium storage due to its high capacity and low working platform, but volume changes during cycling lead to material pulverization and electrode cracking. A robust binder is essential for maintaining Si electrode integrity, yet its role in modulating the chemical composition and spatial distribution of the SEI layer is often overlooked.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Haneol Kang, Hoon Kim, Chuleun Yeom, Moon Jeong Park
Summary: In this study, electrolyte additives were designed and synthesized for lithium batteries with an Si-graphite composite (SGC) anode to improve their rate performance and cycle stability. A hybrid artificial solid-electrolyte interphase (SEI) was formed on the anode surface through a combination of fluoroethylene carbonate (FEC) and dilithium vinylphosphonate (VPLi), resulting in enhanced capacity retention and rate capability.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Haifeng Tu, Linge Li, Zhicheng Wang, Jian Wang, Hongzhen Lin, Mingchao Wang, Cheng Yan, Meinan Liu
Summary: The study developed a crowding dilutant modified ionic liquid electrolyte (M-ILE) for constructing a solid electrolyte interphase (SEI) for high-performance lithium metal batteries. Simulation and experiments demonstrated that the use of 1,2-difluorobenzene (1,2-dfBen) dilutant significantly improved the battery's cycling stability and energy storage performance through promoting the interaction of Li⁺-FSI⁻ and construction of a robust and high ionic-conductive SEI.
Article
Electrochemistry
Hyeon-Woo Yang, Woo Seung Kang, Sun-Jae Kim
Summary: This study investigates the use of octadecylamine (ODA) as an additional electrolyte additive to improve the ionic conductivity and physicochemical stability of SiOx anode, resulting in enhanced cycling performance and charge/discharge efficiency.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Tobias Eisenmann, Jakob Asenbauer, Seyed Javad Rezvani, Thomas Diemant, Rolf Jurgen Behm, Dorin Geiger, Ute Kaiser, Stefano Passerini, Dominic Bresser
Summary: CAMs offer higher specific capacities than graphite, but face challenges in maintaining a stable SEI due to significant volume changes. This study focuses on the SEI composition and evolution on transition metal doped zinc oxide as a CAM model compound, revealing that the presence of iron triggers electrolyte decomposition, which can be mitigated by stabilizing the interface with a carbonaceous coating. These findings advance the understanding of doped materials and metal oxide active materials.
Article
Chemistry, Physical
Li-Peng Hou, Xi-Yao Li, Chen-Xi Bi, Zi-Xian Chen, Zheng Li, Li-Ling Su, Peng Shi, Cheng-Bin Jin, Bo-Quan Li, Jia-Qi Huang, Xue-Qiang Zhang, Qiang Zhang
Summary: This study demonstrates the role of a lithium oxysulfide-rich solid electrolyte interphase (SEI) in shielding parasitic reactions and improving the lifespan of lithium-sulfur batteries. The SEI layer, which introduces abundant lithium oxysulfide components, effectively shields the parasitic reactions and increases the lifespan of the batteries by 60% under demanding conditions.
JOURNAL OF POWER SOURCES
(2022)
Article
Materials Science, Multidisciplinary
Zhenglin Hu, Chen Wang, Chao Wang, Bingbing Chen, Chunpeng Yang, Shanmu Dong, Guanglei Cui
Summary: The solid electrolyte interphase (SEI) plays a critical role in determining the interfacial stability of lithium metal anode. Research compared a diluted electrolyte and a super-concentrated electrolyte, finding that the latter results in a more compact SEI structure due to reduced solubility and outstanding formation kinetics. This work provides new insights into the superior performance of super-concentrated electrolyte in lithium metal batteries.
Article
Nanoscience & Nanotechnology
Zeyu Wu, Zhenhua Wang, Jing Zhang, Zhe Bai, Lina Zhao, Ruilong Li, Zhanfeng Yang, Yu Bai, Kening Sun
Summary: This study reveals the importance of hysteresis and mixed-phase state of graphite during deintercalation in the degradation of hybrid battery through in situ X-ray diffraction and in situ Raman analysis. By introducing an inorganic-rich solid electrolyte interface, the degradation of graphite was successfully mitigated and the reversible capacity of the hybrid anode was increased. This work contributes to the advancement of high-specific-energy lithium secondary batteries.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Wei Lu, Liqun Sun, Yang Zhao, Tong Wu, Lina Cong, Jia Liu, Yulong Liu, Haiming Xie
Summary: A polymer-inorganic gradient SEI layer has been developed to improve interface contact, conductivity, flexibility, and mechanical strength for protected Li metal anode, achieving stable performance and high capacity in various types of Li batteries. This gradient-layer protection opens up new possibilities for practical applications of high-energy-density Li metal batteries in the future.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Physical
Kunyao Peng, Pei Tang, Qianqian Yao, Qingyun Dou, Xingbin Yan
Summary: In this study, N-fluoropyridinium (ArF+) bis(trifluoromethane)sulfonimide (TFSI-) was added as an electrolyte additive to protect lithium metal through both solid electrolyte interphase (SEI) protection and electrostatic repulsion mechanisms. The ArF+ cations formed a protective SEI layer on the lithium surface and acted as a cationic repellent during lithium deposition, leading to improved cycle performance of lithium symmetric cells and lithium parallel to LiFePO4 full cells.
Article
Engineering, Environmental
Xianjun Weng, Yanyang Qin, Xinyu Da, Yuanjun Zhao, Xuetian Deng, Bo Wen, Manying Cui, Xiangkai Yin, Yaqiong Su, Jiangxuan Song, Shujiang Ding, Xiaofei Hu, Guoxin Gao, Xuefei Li
Summary: A novel bifunctional electrolyte additive, NFSI, was developed to greatly improve the cyclability and safety of lithium metal batteries. NFSI preferentially reacts with the lithium anode to form a stable solid electrolyte interphase (SEI) film, inhibiting electrolyte consumption and lithium dendrite growth. Additionally, NFSI is preferentially oxidized to form a conductive thin film layer. Li||Li cells containing 0.1 M NFSI exhibit excellent cycle stability and Li||Cu cells show high Coulombic efficiency.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Jia Chou, Yao Zhao, Xue-Ting Li, Wen-Peng Wang, Shuang-Jie Tan, Ya-Hui Wang, Juan Zhang, Ya-Xia Yin, Fuyi Wang, Sen Xin, Yu-Guo Guo
Summary: This work investigates the electrochemical isotope effects between hydrogen isotopes by comparing electrolytes based on heavy water and light water. The heavy water-based electrolyte shows a broader electrochemical window, a higher percentage of coordinated water, and a longer hydrogen bond lifetime compared to the light water-based electrolyte. This enables high anodic stability and favorable performance in aqueous Li-ion batteries.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
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, Multidisciplinary
Xin-Hai Meng, Ting Lin, Huican Mao, Ji-Lei Shi, Hang Sheng, Yu-Gang Zou, Min Fan, Kecheng Jiang, Rui-Juan Xiao, Dongdong Xiao, Lin Gu, Li-Jun Wan, Yu-Guo Guo
Summary: This study investigates the origin and evolution of the gliding phenomenon in single-crystalline Ni-rich cathodes and reveals the forms of gliding, including discrete or continuous forms. It is demonstrated that the gliding process is the in-plane migration of transition metal ions, and reducing oxygen vacancies can restrain gliding and microcracking. The designed cathode with less oxygen deficiency exhibits outstanding cycling performance.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Multidisciplinary Sciences
Ji-Lei Shi, Hang Sheng, Xin-Hai Meng, Xu-Dong Zhang, Dan Lei, Xiaorui Sun, Hongyi Pan, Junyang Wang, Xiqian Yu, Chunsheng Wang, Yangxing Li, Yu-Guo Guo
Summary: By using Vegard's Slope as a guide for selecting sintering aids, size-controlled single-crystalline Ni-rich (SCNR) cathodes were successfully synthesized, which exhibit higher energy density and improved safety. The synthesis of large SCNR cathodes was achieved by promoting grain boundary migration and reducing surface energy through the migration of sintering aids. The fabricated SCNR cathodes demonstrated high electrode press density, volumetric energy density, and capacity retention, making them suitable for electric vehicles and portable devices.
NATIONAL SCIENCE REVIEW
(2023)
Article
Chemistry, Multidisciplinary
Enhui Wang, Jing Wan, Yu-Jie Guo, Qianyu Zhang, Wei-Huan He, Chao-Hui Zhang, Wan-Ping Chen, Hui-Juan Yan, Ding-Jiang Xue, Tiantian Fang, Fuyi Wang, Rui Wen, Sen Xin, Ya-Xia Yin, Yu-Guo Guo
Summary: In this study, the interface stability of sodium ion batteries (SIBs) is improved by suppressing the continuous growth of the solid-electrolyte interphase (SEI) from the perspective of mitigating electron leakage. Two types of SEI layers with different growth behaviors were created through the additive strategy, and their physicochemical features and electronic properties were extensively investigated. Experimental and calculational analyses demonstrated that the suppressed growth SEI layer exhibits both low electron driving force and high electron insulation ability, mitigating electron leakage and enhancing electrochemical performance.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Ailing Yang, Chao Yang, Kai Xie, Sen Xin, Zheng Xiong, Kaiyuan Li, Yu-Guo Guo, Ya You
Summary: This study evaluated the safety of organic electrolytes by characterizing the thermochemistry of various types of single-solvent electrolytes using cone calorimetry. The results showed that a combination of polyfluorinated solvents and high boiling point solvents can compose nonflammable electrolytes, providing new insights for the design of high safety organic electrolytes.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Hu-Rong Yao, Xin-Guang Yuan, Xu-Dong Zhang, Yu-Jie Guo, Lituo Zheng, Huan Ye, Ya-Xia Yin, Jiaxin Li, Yuming Chen, Yiyin Huang, Zhigao Huang, Yu-Guo Guo
Summary: The air storage stability of O3-type layered oxides NaTmO2 can be significantly improved by introducing a weak orbital hybridization between transition metal and oxygen layers, resulting in better electrochemical performance and less active Na loss.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jia-Yan Liang, Yanyan Zhang, Sen Xin, Shuang-Jie Tan, Xin-Hai Meng, Wen-Peng Wang, Ji-Lei Shi, Zhen-Bo Wang, Fuyi Wang, Li-Jun Wan, Yu-Guo Guo
Summary: By introducing an inorganic anion switch into the organic-anion-enriched primary solvation sheath (PSS), a low-swelling, Li3PO4-rich solid electrolyte interphase (SEI) can be formed, suppressing parasitic reactions and solvent co-intercalation, and improving the efficiency of reversible Li+ (de)intercalation and stable structural evolution of graphite anode in high-energy Li-ion batteries at a low temperature of -20 degrees C.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Multidisciplinary
Xin Chang, Yu-Ming Zhao, Boheng Yuan, Min Fan, Qinghai Meng, Yu-Guo Guo, Li-Jun Wan
Summary: The energy crisis and environmental pollution have led to increased focus on renewable energy development and utilization. However, due to the unpredictable nature of renewable energy resources, energy storage systems are needed to collect and release electricity during peak periods. Among various energy storage technologies, lithium-ion batteries are preferred due to their flexible power and energy, quick response, and high energy conversion efficiency. This review evaluates the priorities and challenges of traditional lithium-ion batteries in grid energy storage, and discusses the potential of solid-state lithium-ion batteries as an alternative with superior performance and safety. The challenges of developing solid-state lithium-ion batteries, such as low ionic conductivity of the electrolyte, unstable electrode/electrolyte interface, and complicated fabrication process, are also discussed.
SCIENCE CHINA-CHEMISTRY
(2023)
Article
Chemistry, Physical
Qiang Ma, Sha Fu, An-Jun Wu, Qi Deng, Wei-Dong Li, Dan Yue, Bing Zhang, Xiong-Wei Wu, Zhen-Ling Wang, Yu-Guo Guo
Summary: Bidirectionally functional polymer electrolytes (BDFPE) were designed to simultaneously handle the interface issues faced by anodes and cathodes. By constructing the BDFPE, a smooth and dendrite-free lithium deposition is enabled for Li||Li symmetry cells, and Li||LiNi0.6Co0.2Mn0.2O2 batteries demonstrate favorable cycling and rate capability with a stable CEI layer. The study provides a promising design strategy for high energy density lithium metal batteries.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Yanan Xu, Kai Wang, Xudong Zhang, Yibo Ma, Qifan Peng, Yue Gong, Sha Yi, Hua Guo, Xiong Zhang, Xianzhong Sun, Hongcai Gao, Sen Xin, Yu-Guo Guo, Yanwei Ma
Summary: A 10-nm polydopamine coating on the residue-removed garnet surface is shown to stabilize the modified garnet filler and prevent the generation of alkaline residues, allowing PVDF to remain intact. Metal-nitrogen bonding between the La atoms of garnet and the amino groups of polydopamine promotes stronger adsorption of Li ions, enabling an efficient ion-percolation network for Li-ion conduction through the garnet-polydopamine interface. The composite electrolyte demonstrates an effective room-temperature Li+ conductivity of 1.52 x 10(-4) S cm(-1) and a high cutoff voltage of up to 4.7 V versus Li+/Li to support stable operation of all-solid-state Li-LiCoO2 batteries.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Juan Zhang, Yi-Fan Tian, Sen Xin, Yu-Guo Guo
Summary: Lithium-ion batteries have had a profound impact on global energy transition. To achieve high-energy rechargeable batteries, researchers have improved the energy-storage capability by encapsulating nonintercalation electrode materials into a three-dimensional conductive framework. This confinement preserves the structural and interfacial integrity, suppresses parasitic reactions, and enables efficient charge transfer.
ACCOUNTS OF MATERIALS RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Ya-Hui Wang, Xu-Sheng Zhang, Cai-Cai Li, Hao Zeng, Zhe Chen, Liang Zhang, Jin-Chi Zheng, Yuan Luo, Sen Xin, Yu-Guo Guo
Summary: This study demonstrates the improved interfacial contact and charge transfer stability between a sulfide electrolyte and Li metal, achieved by forming a Li+-conductive interlayer on the surface of the electrolyte. This inhibition of electrolyte decomposition and dendrite growth enables stable cycling performance and high current density in Li-metal batteries.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Materials Science, Multidisciplinary
Yu-Ting Xu, Sheng-Jia Dai, Xiao-Feng Wang, Xiong-Wei Wu, Yu-Guo Guo, Xian-Xiang Zeng
Summary: This study reports an ion-percolating electrolyte membrane that acts as a stable Li+ reservoir, ensuring efficient and uniform Li+ transport and effectively solving the problem of lithium dendrites in lithium metal batteries, greatly improving the cycling stability and Coulombic efficiency of the batteries.
Article
Electrochemistry
Xue-Ting Li, Jia Chou, Yu-Hui Zhu, Wen-Peng Wang, Sen Xin, Yu-Guo Guo
Summary: This perspective article reviews strategies to broaden the electrochemical window of aqueous electrolytes and achieve high-energy aqueous batteries. It highlights recent findings on utilizing deuterium dioxide-based aqueous electrolyte to stabilize aqueous Li storage electrochemistry, which exhibits a wider electrochemical window and inhibits detrimental parasitic processes.
