Article
Chemistry, Multidisciplinary
Haitang Zhang, Jianken Chen, Yuhao Hong, Xiaohong Wu, Xiao Huang, Peng Dai, Haiyan Luo, Baodan Zhang, Yu Qiao, Shi-Gang Sun
Summary: This article introduces a reliable quantification technology—titration mass spectroscopy, which accurately quantifies the chemical reactions and products in different types of batteries and guides the relevant design strategies by understanding the mechanism. Titration mass spectroscopy technology is not only limited to known products/mechanisms, but also proven to be a powerful tool for studying advanced batteries.
Article
Chemistry, Physical
Z. Xiao, L. Gao, S. Su, D. Li, L. Cao, L. Ye, B. Zhang, L. Ming, X. Ou
Summary: A novel recycling process was developed in this study to regenerate spent lithium-ion batteries into carbon-metal sulfides composites through gas sulfidation method, achieving efficient recycling and outstanding electrochemical properties. This approach provides new insight into transforming spent batteries into value-added materials, by simultaneously recycling valuable components from cathode and anode materials, to achieve a win-win situation of environment protection and resource conservation.
MATERIALS TODAY ENERGY
(2021)
Article
Chemistry, Physical
Chi Hao Liow, Hyeonmuk Kang, Seunggu Kim, Moony Na, Yongju Lee, Arthur Baucour, Kihoon Bang, Yoonsu Shim, Jacob Choe, Gyuseong Hwang, Seongwoo Cho, Gun Park, Jiwon Yeom, Joshua C. Agar, Jong Min Yuk, Jonghwa Shin, Hyuck Mo Lee, Hye Ryung Byon, EunAe Cho, Seungbum Hong
Summary: This study establishes a relationship between experimental parameters and performance using an inverse design surrogate model based on descriptors derived from expert conclusions. The model predicts design variables without the need for trial and error, serving as an effective strategy for cathode retrosynthesis.
Article
Chemistry, Physical
Ling Huang, Ying Wang, Qing Zhou, Fangming Xiao, Yu Guo, Renheng Tang, Wenchao Li
Summary: In this study, a new concentration-gradient LiNi(0.80)Co(0.15)Al(0.05)O(2) cathode material was designed and synthesized, showing promising discharge capacity and excellent capacity retention after cycling.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Weiping Li, Wen Xie, Fei Shao, Ju Qian, Shantao Han, Peng Wen, Jun Lin, Mao Chen, Xinrong Lin
Summary: By introducing nonplanar heteroaromatic linkages, such as phenothiazine, into two-dimensional covalent organic frameworks (2D-COFs), the packing topology and interplanar distance can be tuned, resulting in a porous 2D-COF with good electroactivity, enlarged d-spacing, and accessibility to interior Li+-interactive sites. This design concept of interlayer engineering provides a new strategy for organic porous energy storage materials.
Article
Chemistry, Physical
Jungyoung Ahn, Taeeun Yim
Summary: Introducing allyl phenyl sulfone (APS) functional electrolyte additive can effectively enhance the cycling performance of nickel-rich layered lithium metal oxides at high temperature, leading to improved overall electrochemical performance of a cell.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Si-Yu Yang, Zulipiya Shadike, Wei-Wen Wang, Xin-Yang Yue, He-Yi Xia, Seong-Min Bak, Yong-Hua Du, Hong Li, Zheng-Wen Fu
Summary: Coating a nano-scaled layer of LiPON on the electrode surface can improve the electrochemical stability and increase the cycle life and safety of lithium-ion batteries. The study shows that the coating not only modifies the electrode-electrolyte interface but also enhances the structural stability of the particle surface.
ENERGY STORAGE MATERIALS
(2022)
Review
Multidisciplinary Sciences
Gaolei Wei, Yuxuan Liu, Binglei Jiao, Nana Chang, Mengting Wu, Gangfeng Liu, Xiao Lin, XueFei Weng, Jinxing Chen, Liang Zhang, Chunling Zhu, Guiling Wang, Panpan Xu, Jiangtao Di, Qingwen Li
Summary: This article explores the obstacles to the practical implementation of direct recycling of Li-ion batteries (LIBs) and provides potential solutions. It emphasizes the need for long-term collaboration among manufacturers, battery producers, and recycling companies to advance fully automated recycling of spent LIBs. Lastly, a smart direct recycling framework is proposed to achieve the full life cycle sustainability of LIBs.
Review
Chemistry, Inorganic & Nuclear
Alexander A. Pavlovskii, Konstantin Pushnitsa, Alexandra Kosenko, Pavel Novikov, Anatoliy A. Popovich
Summary: This review showcases strategies and techniques for regenerating LiNixCoyMnzO2 cathode active materials directly from commonly used and different types of mixed-cathode materials. It also systematically analyzes the economic benefits and diverse synthetic routes reported in the literature.
Review
Chemistry, Multidisciplinary
Wei Guo, Dan-Yang Wang, Qiliang Chen, Yongzhu Fu
Summary: Organosulfur compounds have gained attention as promising cathode materials for rechargeable metal batteries in recent years. Research has focused on understanding the redox mechanisms of linear organosulfur molecules and developing new compounds. The reversible sulfur-sulfur bond breakage/formation makes organosulfur materials functional in batteries.
Article
Chemistry, Physical
Gyeongbin Ko, Sanghyuk Park, Wooseok Kim, Kyungjung Kwon
Summary: In this study, the performance of Na-incorporated Li [Ni0.8Co0.1Mn0.1]O2 (N-NCM) lithium-ion batteries was improved through a facile Al3+ doping strategy. Na and Al co-doped NCM811 (NA-NCM) cathode materials were successfully synthesized, and the physicochemical and electrochemical properties were systematically investigated. The results showed that a small amount of Al doping significantly improved the cyclability and discharge capacity, while excessive Al doping led to sluggish rate capability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Chunliu Li, Banglei Zhao, Junfeng Yang, Linchao Zhang, Qianfeng Fang, Xianping Wang
Summary: Li2ZrO3-coated and Al-doped micro-sized monocrystalline LiMn2O4 powder shows superior cycling and rate performance, attributed to the synergistic effect of Al-doping and Li2ZrO3-coating.
Article
Green & Sustainable Science & Technology
Xuehu Zhong, Junwei Han, Xiaohui Mao, Lingling Chen, Mengjun Chen, Hailing Zhu, Hongbo Zeng, Wenqing Qin
Summary: An effective pyrolysis method using dimethyl formamide (DMF) was proposed to efficiently separate cathode active materials and aluminum foils from spent lithium-ion batteries (LIBs). The results showed that the addition of DMF enhanced the separation of the materials by generating micro bubbles, and about 98.93% of the cathode active materials were recovered after pyrolysis. This method also facilitated the decomposition of toxic electrolyte and achieved the safe disposal of organic pollutants. The recovered materials hardly contained impurities, which is beneficial for their regeneration.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Physical
Zonglin Xu, Shilin Zhang, Jingyan Liu, Zehao Xiao, Mei Yang, Aidong Tang
Summary: This study investigated the effect of acid-modified halloysite and kaolinite nanoscrolls as sulfur carriers on the performance of lithium-sulfur batteries. Results showed that kaolinite nanoscrolls demonstrated better adsorption and diffusion properties, exhibiting improved reaction kinetics and cycle stability. This research provides new insights into the application of clay minerals in lithium-sulfur batteries.
APPLIED CLAY SCIENCE
(2022)
Article
Chemistry, Physical
Weibo Huang, Yan Wang, Linze Lv, Guobin Zhu, Qunting Qu, Honghe Zheng
Summary: Long-term cycling performance remains a crucial challenge for Si-based full cells due to the instability of Si surface. A solid interfacial conversion between cryolite (NAF) and SiOx layer on the Si surface forms a robust and corrosion-resistant interfacial layer. The optimized Si@NAF-C350 anode demonstrates improved electro-chemical properties and delivers a reversible capacity of 1387.4 mAh g 1 after 500 cycles. The full cell based on this Si anode exhibits a significant cycling enhancement and achieves a high reversible capacity of 133.8 mAh g 1 after 300 cycles, demonstrating the feasibility of practical application.
ENERGY STORAGE MATERIALS
(2023)
Editorial Material
Chemistry, Physical
Karena W. Chapman, Yong-Sheng Hu, Kimberly A. See, Yang-Kook Sun
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Un-Hyuck Kim, Tae-Yeon Yu, Jin Wook Lee, Han Uk Lee, Ilias Belharouak, Chong Seung Yoon, Yang-Kook Sun
Summary: Electric vehicles powered by Li-ion batteries can be dangerous due to the flammable liquid electrolytes, but all-solid-state batteries offer a safe alternative. This study demonstrates that B-doping and coating of a Ni-rich Li[Ni0.9Co0.05Mn0.05]-O2 cathode can enhance the microstructure and cathode-solid electrolyte interface, resulting in an all-solid-state battery that cycles stably for 300 cycles with minimal capacity fading. The B-doped, B-coated Li[Ni0.9Co0.05Mn0.05]O2 cathode achieves a discharge capacity of 214 mAh g-1, one of the highest among all-solid-state batteries, and retains 91% of its initial capacity after 300 cycles, surpassing previously reported all-solid-state batteries in terms of energy density without compromising cycling stability.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Un-Hyuck Kim, Soo-Been Lee, Ji-Hyun Ryu, Chong Seung Yoon, Yang -Kook Sun
Summary: Through comparing the electrochemical performance of Li[Ni0.92_xCo0.04Mn0.04Alx]O2 cathodes, a high-performance Ni-rich Li[Ni1_x_y_zCoxMnyAlz]O2 (NCMA) is developed with optimal Al content. The introduction of excess Al results in a refined cathode microstructure, effectively dissipating strain and suppressing the formation of internal cracks. A full cell featuring the optimized NCMA cathode demonstrates excellent long-term cycling stability and energy density, outperforming existing layered cathodes. This research represents a new class of Ni-rich layered cathodes suitable for high-performance electric vehicles.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Nam-Yung Park, Gyeil Cho, Su-Bin Kim, Yang-Kook Sun
Summary: By doping with tantalum, the CS-type cathode encapsulates the Ni-rich region with a Ni-less shell, effectively improving the cycling stability of the cathodes. Ta doping suppresses interdiffusion by segregating the Ta-rich phases at the particle boundaries, maintaining the highly aligned microstructure and the ordered intermixing structure, as well as the concentration gradient, over a wide lithiation temperature range. The Ta-doped CS-type cathode retains 92.6% of its initial capacity after 1000 cycles and exhibits resistance to damage from fast charging.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Hun Kim, Su-Hyun Lee, Jae-Min Kim, Chong Seung Yoon, Yang-Kook Sun
Summary: In this study, a carbonate-electrolyte-based Li-metal battery with high areal capacity and long cycle life is proposed. The cycling stability is improved by applying external compressive pressure and a boehmite-coated separator, resulting in 82% retention of initial capacity after 500 cycles. This research provides important insights for realizing high-energy-density Li-metal batteries and demonstrates the potential of employing cell compression to increase battery life and energy density.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Nam-Yung Park, Su-Bin Kim, Myoung-Chan Kim, Sang-Mun Han, Dong-Hwi Kim, Min-Su Kim, Yang-Kook Sun
Summary: Introducing additional elements into Ni-rich cathodes is an essential strategy for addressing the instability of the cathode material. However, traditional doping strategies may lead to accumulation of high-valence elements along the interparticle boundaries, reducing the electrochemical performance. This study investigates a new mechanism for doping high-valence elements into Ni-rich cathodes, which maintains the highly aligned microstructure and high crystallinity of the cathode, thereby enhancing the electrochemical performance.
ADVANCED ENERGY MATERIALS
(2023)
Review
Chemistry, Physical
Xinghui Liang, Jang-Yeon Hwang, Yang-Kook Sun
Summary: In recent decades, sodium-ion batteries (SIBs) have attracted increasing attention due to their cost and safety advantages, as well as their ability to overcome the challenges associated with limited lithium/cobalt/nickel resources and environmental pollution. The development of high-energy density and low-cost cathode materials is essential for the commercialization of SIBs. This review provides a comprehensive summary of the research progress and modification strategies for O3-type sodiated transition-metal oxides, which have shown promise as cathode materials for SIBs. The goal is to guide the development of commercial layered oxides and support the next generation of energy-storage systems.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Hun Kim, Ha-Neul Choi, Jang-Yeon Hwang, Chong Seung Yoon, Yang-Kook Sun
Summary: An inorganic Li-ion-conducting species is incorporated between sulfur (S-8) and the sulfide solid electrolyte (SSE) to enhance the ionic contact, improving the performance of all-solid-state lithium-sulfur batteries (ASSLSBs). The addition of a weakly polar solvent promotes interfacial chemical reactions, enhancing the wettability of the solid electrolyte towards the active material. This results in a high-performance ASSLSB with high areal capacity and promising lifetime.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Geon-Tae Park, Sang-Mun Han, Ji-Hyun Ryu, Myoung-Chan Kim, Dong-Hwi Kim, Min-Su Kim, Yang-Kook Sun
Summary: The addition of a trace amount of tungsten during the calcination of the cathode material can effectively mitigate high-temperature-induced degradation and improve cycling performance.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Hyokyeong Kang, Hyuk Kang, Junji Piao, Xieyu Xu, Yangyang Liu, Shizhao Xiong, Seunggyeong Lee, Hun Kim, Hun-Gi Jung, Jaekook Kim, Yang-Kook Sun, Jang-Yeon Hwang
Summary: In this study, the use of TiC/C-carbon nanotubes (CNTs) as a buffer matrix improved the performance of tin as an anode material for K-ion batteries. The TiC/C-CNTs matrix enhanced the electrical conductivity and mechanical integrity of tin, preventing the propagation of microcracks during potassiation and thereby preventing electrode degradation.
Article
Green & Sustainable Science & Technology
Hun Kim, Su-Hyun Lee, Nam-Yung Park, Jae-Min Kim, Jang-Yeon Hwang, Yang-Kook Sun
Summary: By incorporating chloroethylene carbonate (ClEC) as an additive, a robust and highly ion-conductive solid electrolyte interphase (SEI) layer is designed, improving the cycle stability of the Li metal anode and suppressing microcracking of the Ni-rich layered cathode.
ADVANCED ENERGY AND SUSTAINABILITY RESEARCH
(2023)
Article
Chemistry, Physical
Hun Kim, Kyeong-Jun Min, Sangin Bang, Jang-Yeon Hwang, Jung Ho Kim, Chong S. Yoon, Yang-Kook Sun
Summary: Realizing a high-energy density and long-lifespan Li2S cathode requires an innovative design with a high-loading Li2S-based cathode consisting of graphene and carbon nanotubes. The role of carbon nanotubes in stable cycling of high-capacity Li-S batteries is emphasized. The composite cathode demonstrates unprecedented electrochemical properties even with a high Li2S loading, showing ultra-long-term cycling stability over 800 cycles when coupled with a graphite anode in a Li-S full cell.
Article
Chemistry, Multidisciplinary
Geon-Tae Park, Su-Bin Kim, Been Namkoong, Ji-Hyun Ryu, Jung-In Yoon, Nam-Yung Park, Myoung-Chan Kim, Sang-Mun Han, Filippo Maglia, Yang-Kook Sun
Summary: The study proposes a strategy to improve the high-nickel content cathode by constructing ultrafine microstructures and intergranular shielding, effectively solving structural weaknesses, chemical instability, and gas generation issues. This approach enhances the mechanical durability and electrochemical performance of the cathode, extending the battery's lifespan.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Energy & Fuels
Hoon-Hee Ryu, Hyung-Woo Lim, Sin Gyu Lee, Yang-Kook Sun
Summary: The study proposes a washing process using Co-dissolved water to remove residual lithium and form a protective coating on the Ni-rich layered cathodes. The washing process induces near-surface structure reconstruction and prevents direct contact between the electrolyte and the cathode surface. The addition of a fluorine coating on the washed cathode suppresses by-product decomposition and gas generation during cycling, resulting in extended cycle lives of the cathodes and meeting the requirements of energy density, durability, and safety for next-generation batteries.
Article
Chemistry, Physical
Jun Tae Kim, Hyeon-Ji Shin, A-Yeon Kim, Hyeonseong Oh, Hun Kim, Seungho Yu, Hyoungchul Kim, Kyung Yoon Chung, Jongsoon Kim, Yang-Kook Sun, Hun-Gi Jung
Summary: This study proposes a method for improving the performance of all-solid-state batteries by synthesizing controlled sulfide solid electrolyte materials and their simple coating process. The results show that the coated materials exhibit excellent Li-ion conductivity and suppress cathode degradation reactions, enabling high discharge capacity and long cycle life.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
