Review
Energy & Fuels
Dan Zhang, Weizhuo Zhang, Shengrui Zhang, Xiaohui Ji, Le Li
Summary: This article reviews the synthesis methods and composite strategies of expanded graphite in high-performance lithium-based batteries, and introduces the latest research findings on expanded graphite-based composite materials. The important role of expanded graphite-based composite materials in this field is emphasized, and the remaining challenges are discussed to accelerate the advancement and commercialization of lithium-based battery technology.
JOURNAL OF ENERGY STORAGE
(2023)
Review
Chemistry, Multidisciplinary
Liang Zhao, Baichuan Ding, Xian-Ying Qin, Zhijie Wang, Wei Lv, Yan-Bing He, Quan-Hong Yang, Feiyu Kang
Summary: This article provides a comprehensive overview of the origin, roles, and research progress of NG-based materials in ongoing LIBs. It covers the structure, properties, electrochemical performance, modification methods, derivatives, composites, and applications of NG. The strategies to improve their high-rate and low-temperature charging performance are also discussed, along with prospects for the development and future applications of NG-based materials.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Dominika Gastol, Matthew Capener, Carl Reynolds, Christopher Constable, Emma Kendrick
Summary: The performance properties of lithium-ion battery electrodes are determined by the design of the coating composite microstructure. This study optimized the rheological properties of the graphite ink and utilized a specific printing process to manipulate the internal pore structure and electronic networks of high coat weight electrodes, resulting in improved performance and cycle life. Depositing electrodes via syringe showed enhanced electronic conductivities and diffusion coefficients, leading to better cycle life and higher energy density.
MATERIALS & DESIGN
(2021)
Article
Chemistry, Physical
Yaodong Ma, Pengqian Guo, Mengting Liu, Pu Cheng, Tianyao Zhang, Jiande Liu, Dequan Liu, Deyan He
Summary: Porous carbon coated silicon nanoparticles were prepared as anode materials for lithium-ion batteries to suppress the volume expansion effect of silicon and improve the infiltration of electrolyte and the diffusion of lithium ions. The mass ratio of the anode materials effectively controlled the specific capacities and reduced production cost.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Andrzej P. Nowak, Konrad Trzcinski, Zuzanna Zarach, Jinjin Li, Daria Roda, Mariusz Szkoda
Summary: The graphite-based negative electrode with PHBV binder shows similar specific capacity and lithium ion diffusion coefficient as the conventional graphite electrode with PVDF binder based on electrochemical tests.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Wenlu Min, Xianghong Chen, Shuhan Huang, Yunlong Liao, Zhiyong Liang, Yu Lei, Jiantie Xu
Summary: The synthesis of reduced holey graphene oxides with different structures is important for the development of advanced lithium ion batteries. The rhG-400 as cathode for LIBs delivers high reversible capacity, excellent rate capability, and maintains an ultra-long cycling life.
Article
Chemistry, Multidisciplinary
Ruijun Pan, Eunmi Jo, Zehao Cui, Arumugam Manthiram
Summary: Electrode-electrolyte reactivity (EER) is found to have a greater impact on the cycling stability of LiNiO2 cathodes than particle cracking (PC) in lithium-based batteries. EER leads to primary particle cracking but mitigates secondary particle cracking due to the inhibition of H2-H3 phase transformation. The surface degradation pathways of cycled LiNiO2 are identified under low and high EER conditions, revealing the formation of an electrochemically-inactive SRL with Ni3O4 and NiO phases under high EER and an electrochemically-active SRL with LiNi2O4 phase under low EER.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Oguz Bayindir, Ikramul Hasan Sohel, Melek Erol, Ozgur Duygulu, Mehmet Nurullah Ate
Summary: This study introduces a new design paradigm for electrode preparation that significantly enhances the fast-charging capabilities of a graphite anode by controlling crystallographic orientation. By using neodymium magnets under a dynamic magnetic field, the graphite particles align along specific crystal planes, allowing for an 80% charge state in just 50 minutes at a 1C charge rate, compared to 138 minutes for randomly oriented graphite electrodes. The outstanding electrochemical performance of the oriented graphite electrodes was confirmed through various characterization techniques.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Qinfeng Zheng, Guanjie Li, Xiongwen Zheng, Lidan Xing, Kang Xu, Weishan Li
Summary: Sulfolane shows great potential as an electrolyte for lithium-ion batteries due to its non-flammability and high oxidation stability, but its incompatibility with graphitic anode limits its advantages. By increasing the fluorine content in the solvation sheath, a stable LiF-rich interphase on graphite can be formed, providing new insights into overcoming the failure mechanism and unlocking potential electrolyte solvent candidates for future high-voltage cathode materials in LIBs.
ENERGY & ENVIRONMENTAL MATERIALS
(2022)
Article
Energy & Fuels
Changyong Jin, Yuedong Sun, Yuejiu Zheng, Xinbo Yang, Xin Lai, Huanghui Gu, Xuning Feng
Summary: A new peak power test experimental procedure based on constant power charge/discharge modes was proposed in this study for 11 Ah LiFePO4 cells. The concept of power sensitivity was also introduced to simplify determining set power during experiments. The results showed that this method can assist researchers in fully understanding the peak power characteristic of batteries.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Electrochemistry
Madhusoodhanan Lathika Divya, Subramanian Natarajan, Vanchiappan Aravindan
Summary: This study presents different recycling techniques for graphite from spent lithium-ion batteries (LIBs) and discusses their reuse in various applications. It aims to assist researchers and industries in efficiently utilizing graphite as a valuable source for high-capacity production of graphene and addressing the increasing volume of spent LIBs.
BATTERIES & SUPERCAPS
(2022)
Article
Engineering, Environmental
Chen Wang, Xiaochen Sun, Jv Zhang, Xiaoli Zhai, Xin Zhang, Zhuo Li, Hongdong Li
Summary: In this study, it is demonstrated that introducing nanodiamonds with high concentration of H2O can improve the performance of commercial lithium ion batteries. The synergistic effect of nanodiamonds and H2O leads to the formation of a highly conductive SEI network, enhanced ionic conductivity and separator wettability of electrolyte, mitigated erosion of graphite anode, and increased storage sites for Li+. This work provides an efficient method to boost the performance of LIBs and reduce production costs in practical applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Physical
Peng Li, Hun Kim, Seung-Taek Myung, Yang-Kook Sun
Summary: This review highlights the necessity of co-exploitation of silicon and graphite, and systematically concludes the key issues, challenges, and perspectives of Si-graphite electrodes. Through a deep understanding of associated electrochemical processes, the component and structural optimization of Si-graphite anodes could be effectively enhanced.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Physical
Kiyoshi Betsuyaku, Takeshi Kobayashi
Summary: This study investigated the fading behavior of commercial lithium-ion batteries with blended cathodes. The research revealed the constituent materials and degradation state of the cathode due to particle cracking. A newly introduced particle model was used to explain the voltage change caused by particle cracking, which is not considered in conventional discharge curve analyses. The blended cathode and particle models were implemented in the discharge curve analysis, showing improved accuracy in reproducing measured discharge curves and capturing changes in blend weight ratio due to degradation.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Jian Lu, Yun Zhao, Yuqiong Kang, Chenglei Li, Yawen Liu, Liguang Wang, Hao Du, Meicen Fan, Yunan Zhou, John Wozny, Tao Li, Naser Tavajohi, Feiyu Kang, Baohua Li
Summary: Efficient and economical recycling of lithium-ion batteries is challenging due to low valuation of commodity metals and materials. Utilizing the surplus energy in lithiated graphite to prepare organolithiums significantly improves the economic profitability of LIB recycling.