Article
Chemistry, Physical
R. Srinivasan, K. S. Ravi Chandran
Summary: The paper discusses the discovery of an ideal structure for mesoporous Si electrodes, which exhibits exceptional cracking/damage resistance and high specific and total capacities. It is found that electrodes with the optimized structural parameter are free from first-cycle capacity degradation and can uniformly accommodate the volume changes during lithiation. The study shows that the ideal structure is crucial for achieving ultrahigh energy storage density in Si mesoporous electrodes for Li-ion batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Yidan Cao, Sophie Hans, Julia Liese, Ulrike Werner-Zwanziger, Jun Wang, J. Craig Bennett, R. A. Dunlap, M. N. Obrovac
Summary: Si(CO)(y) alloys were synthesized by reactive gas milling silicon in CO2 at room temperature, forming Si nanograins dispersed in an amorphous Si-O-C matrix. The capacity behavior suggests the formation of inactive SiC and Li4SiO4 during the first lithiation, leading to significantly greater initial coulombic efficiency (ICE) compared to SiOx.
CHEMISTRY OF MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Hao Wu, Lihua Zheng, Ning Du, Bowen Sun, Jie Ma, Yingying Jiang, Jiadong Gong, Huan Chen, Lianbang Wang
Summary: The rational design of compact graphite/Si/SiO2 ternary composites enhances packing density and leads to higher areal capacity compared to pure graphite. Introducing Si/SiO2 clusters into void spaces between graphite particles provides an effective strategy for implementing graphite-Si composite anodes in next-generation Li-ion cells.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Guanzhou Zhu, Peng Liang, Cheng-Liang Huang, Cheng-Chia Huang, Yuan-Yao Li, Shu-Chi Wu, Jiachen Li, Feifei Wang, Xin Tian, Wei-Hsiang Huang, Shi-Kai Jiang, Wei-Hsuan Hung, Hui Chen, Meng-Chang Lin, Bing-Joe Hwang, Hongjie Dai
Summary: Developing new types of high-capacity and high-energy density rechargeable batteries is crucial for the future of consumer electronics, electric vehicles, and mass energy storage applications. Recent research has reported the successful development of sodium/chlorine (Na/Cl2) and lithium/chlorine (Li/Cl2) batteries with reversible capacities of up to 1200 mAh g-1. These batteries utilize low-cost amorphous carbon nanospheres as the positive electrode and aluminum chloride dissolved in thionyl chloride as the electrolyte.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Kai Yang, Luyi Yang, Zijian Wang, Bin Guo, Zhibo Song, Yanda Fu, Yuchen Ji, Mingqiang Liu, Wenguang Zhao, Xinhua Liu, Shichun Yang, Feng Pan
Summary: This study prepared aligned electrodes with high mass loading and areal capacities by copolymerizing xanthan gum and amorphophallus konjac gum, using an ice-templating method. The KG-XG copolymer not only firmly holds active materials together, but also improves effective porosity and homogeneous dispersion of conductive agents.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Jiewen Shi, Hanyang Gao, Guoxin Hu, Qing Zhang
Summary: In this study, a stable self-assembled microcluster based on nanostructured core-shell Si@SiOX building blocks for the anode of Li-ion batteries was designed to achieve high tap density. The carbon layer in the microclusters acts as a micron-size electrolyte barrier to promote the formation of a stabilizing Li+ permeable solid-electrolyte interphase (SEI) layer, while the carbon skeleton and SiOX layer provide a buffer for the volume expansion of silicon.
MATERIALS TODAY ENERGY
(2022)
Article
Nanoscience & Nanotechnology
Zhihong Cui, Xuefeng Lu, Jingren Dong, Yuping Liu, Hong Chen, Changguo Chen, Jingfeng Wang, Guangsheng Huang, Dingfei Zhang, Fusheng Pan
Summary: The low specific capacity and Mg non-affinity of graphite limit the energy density of ion rechargeable batteries. In this study, we identify that the monolayer C12-3-3 in sp2-sp3 carbon hybridization with high Li/Mg affinity is a suitable anode material for Li-ion batteries and Mg-ion batteries. The monolayer C12-3-3 exhibits high specific capacities for Li and Mg, surpassing most previous anodes. The 2D carbon material of C12-3-3 also demonstrates rapid diffusion kinetics, making it a promising choice for high-capacity and high-rate performance batteries.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Multidisciplinary Sciences
Yuhgene Liu, Congcheng Wang, Sun Geun Yoon, Sang Yun Han, John A. A. Lewis, Dhruv Prakash, Emily J. J. Klein, Timothy Chen, Dae Hoon Kang, Diptarka Majumdar, Rajesh Gopalaswamy, Matthew T. T. McDowell
Summary: Non-pre-lithiated aluminum-foil-based negative electrodes with engineered microstructures exhibit long-term cycling stability in all-solid-state lithium-ion batteries, providing a possible route for improving high-energy-density batteries.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Jannes Mueller, Mozaffar Abdollahifar, Andrey Vinograd, Markus Noeske, Christine Nowak, Shu-Jui Chang, Tobias Placke, Wolfgang Haselrieder, Martin Winter, Arno Kwade, Nae-Lih Wu
Summary: The study reports the fabrication of silicon-on-graphite composites using fluidized bed granulation for the first time, showing the formation of core-shell microstructure. By using a suitable binder during the process, the carbon-coated composites exhibit high capacity, high rate capability, and long cycle stability.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Hsiao-Chien Wang, Chih-Ming Hsu, Bingni Gu, Chia-Chen Chung, Shu-Chi Wu, P. Robert Ilango, Jian-Shiou Huang, Wen-Chun Yen, Yu-Lun Chueh
Summary: The growth of helical Si@Cu3Si nanorod arrays via glancing angle deposition followed by an annealing process resulted in materials with high capacity, high electrical conductivity, and precise control spacing behavior. The Si@Cu3Si nanorod arrays exhibited superior volumetric capacity and cycling stability in half cells, showing potential for the development of Si-based electrode materials.
Article
Chemistry, Multidisciplinary
Lipeng Zhai, Gaojie Li, Xiubei Yang, Sodam Park, Diandian Han, Liwei Mi, Yanjie Wang, Zhongping Li, Sang-Young Lee
Summary: In this study, a redox-active COF (TP-OH-COF) capable of accommodating 30 Li+ ions was synthesized for use as a high-capacity lithium-ion battery electrode material. With a unique chemical/structural feature, the TP-OH-COF demonstrated a high specific capacity of 764.1 mAh g(-1) and 63% capacity retention after 8000 cycles at a fast current density of 5.0 A g(-1).
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Aleksandra A. Savina, Anatolii V. Morozov, Ivan A. Moiseev, Anton O. Boev, Dmitry A. Aksyonov, Leiting Zhang, Polina A. Morozova, Victoria A. Nikitina, Egor M. Pazhetnov, Erik J. Berg, Stanislav S. Fedotov, Jean-Marie Tarascon, Evgeny V. Antipov, Artem M. Abakumov
Summary: Due to the excellent discharge capacity provided by oxygen redox activity, Li-rich layered oxide positive electrode materials have attracted great attention. However, there is still no consensus regarding the role of ionocovalency of transition metal-oxygen chemical bonding in the reversibility of oxygen redox and the local crystal and electronic structure transformations. In this study, we successfully manipulated the cationic/anionic redox contributions to the overall electrochemical activity and investigated the importance of enhancing the covalency of the TM-O bonding for anchoring the reversibility of the charge compensation mechanism.
CHEMISTRY OF MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Cheng Yuan, Hongtai Li, Genlin Liu, Pan Zeng, Jing Mao, Liang Zhang
Summary: Incorporating efficient electrocatalysts into sulfur cathodes is a promising strategy for improving the performance of lithium-sulfur batteries. However, the dynamic evolution of electrocatalysts during electrochemical reactions has been largely ignored. This review provides a comprehensive description of the occurrence, mechanism, and applications of electrocatalyst evolution, as well as strategies for regulating and characterizing this evolution.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Zhengyan Lun, Bin Ouyang, Deok-Hwang Kwon, Yang Ha, Emily E. Foley, Tzu-Yang Huang, Zijian Cai, Hyunchul Kim, Mahalingam Balasubramanian, Yingzhi Sun, Jianping Huang, Yaosen Tian, Haegyeom Kim, Bryan D. McCloskey, Wanli Yang, Raphaele J. Clement, Huiwen Ji, Gerbrand Ceder
Summary: High-entropy ceramics are solid solutions with compositional flexibility and wide applicability, showing substantial performance improvement in lithium-ion battery cathodes. The high-entropy concept leads to enhancements in energy density and rate capability, especially in cation-disordered rocksalt-type cathodes. High-entropy materials have the potential for various applications and the design of high-entropy solid solutions in the DRX space can further enhance performance in battery electrodes.
Article
Chemistry, Multidisciplinary
Katja Lahtinen, Eeva-Leena Rautama, Hua Jiang, Samuli Rasanen, Tanja Kallio
Summary: The study found that the structure and capacity of aged LiCoO2 can be restored through re-lithiation, providing a new method for the recycling of used batteries.
Review
Nanoscience & Nanotechnology
Jihyeon Kim, Youngsu Kim, Jaekyun Yoo, Giyun Kwon, Youngmin Ko, Kisuk Kang
Summary: Transition-metal-free organic rechargeable batteries are promising alternatives to lithium-ion batteries, with potential cost-effectiveness and eco-friendliness. This review evaluates the current status of organic rechargeable batteries and discusses their potential in various post-lithium-ion-battery platforms.
NATURE REVIEWS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yoo Min Shin, Ji Hyeon Lee, Geon Yeong Kim, Hae Mee Ju, Yeon Sik Jung, Jea Woong Jo, Min-Jae Choi
Summary: In this study, all-inorganic perovskite nanowires with minimized surface defects were synthesized using a dual-phase passivation strategy. These nanowires were used as an interfacial layer in perovskite solar cells, resulting in an increased power conversion efficiency.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Jaekyun Yoo, Byunghoon Kim, Byungju Lee, Jun-hyuk Song, Kisuk Kang
Summary: Selecting chemically compatible functional materials is crucial for the assembly and long-term stability of multi-component systems. In the design of organic-based batteries, the compatibility between organic compounds for the electrode and electrolyte is important. A new artificial neural network platform called ImRRNet was developed to predict the chemical reactivities of any combination of two organic compounds. The accuracy of ImRRNet was remarkably higher than previous models, making it suitable for practical use in the design of multi-component organic-based rechargeable batteries.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
A-Re Jeon, Seungyun Jeon, Gukhyun Lim, Juyoung Jung, Woo Joo No, Si Hyoung Oh, Jihyun Hong, Seung-Ho Yu, Minah Lee
Summary: Rechargeable magnesium batteries with higher energy density and safety have practical potential, but they face obstacles due to passivation or corrosion issues. However, a chemical activation strategy using simple salt electrolytes has been developed, which successfully improves the performance of the magnesium anode and enables stable cycling over 990 cycles. This activation strategy opens up possibilities for the practical implementation of magnesium batteries using commercially available electrolytes.
Article
Chemistry, Multidisciplinary
Wonju Kim, Joohyeon Noh, Sunyoung Lee, Kyungho Yoon, Sangwook Han, Seungju Yu, Kun-Hee Ko, Kisuk Kang
Summary: Halide solid electrolytes are a promising option for cathode-compatible catholytes in solid-state batteries (SSBs) due to their superior oxidation stability and interfacial stability. However, their long-term aging at the cathode interface has not been explored before, which is crucial for practical deployment.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Pan Xia, Bin Sun, Margherita Biondi, Jian Xu, Ozan Atan, Muhammad Imran, Yasser Hassan, Yanjiang Liu, Joao M. Pina, Amin Morteza Najarian, Luke Grater, Koen Bertens, Laxmi Kishore Sagar, Husna Anwar, Min-Jae Choi, Yangning Zhang, Minhal Hasham, F. Pelayo Garcia de Arquer, Sjoerd Hoogland, Mark W. B. Wilson, Edward H. Sargent
Summary: This research reports a novel co-passivation strategy for fabricating indium arsenide CQD photodetectors, which maintains charge carrier mobility and improves passivation by using methyl ammonium acetate and indium chloride as ligands, resulting in a doubling of the photoluminescence lifetime. The resulting devices achieved a 37% external quantum efficiency (EQE) at 950 nm, the highest reported value for InAs CQD photodetectors.
ADVANCED MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Younghoon Kim, Min-Jae Choi, Jongmin Choi
Summary: This paper reviews the research progress of colloidal quantum dot (CQD) solar cells, focusing on the strategies adopted for achieving record efficiency. These strategies include the use of organic/inorganic surface ligands, pre-and post-treatment of CQDs, and solid-state/solution-phase ligand exchange. In addition, the paper provides an understanding of the research history and recent developments in the rational design of next-generation CQD optoelectronic devices, as well as the importance of infrared CQD solar cells as complementary platforms to other solar cell technologies.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Hae Mee Ju, Doheon Yoo, Min -Jae Choi
Summary: This study introduces a ligand-induced surface reconstruction strategy to significantly improve the photoluminescence quantum yield (PLQY) of silver sulfide quantum dots (Ag2S CQDs), enhancing their potential for bio-imaging applications.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Gayathri Chellasamy, Shiva Kumar Arumugasamy, Myeong Jin Nam, Sada Venkateswarlu, Elumalai Varathan, Karthikeyan Sekar, Kamaraj Manokaran, Min-Jae Choi, Saravanan Govindaraju, Kyusik Yun
Summary: Single atom catalysts (SACs) with dispersed metal active sites, signal amplification, and acceptable sensitivity and selectivity have played a significant role in biosensing. A recent advancement includes the development of dual-metal single atom catalysts (CuAu SACs/BC) with high metal loading and flexible active sites, enabling enhanced electrochemical activity and biosensing ability. This study presents the fabrication and application of carbon-supported dual-metal single atoms for real-time electrochemical detection of dopamine in cellular environments and biofluids. The bioinspired CuAu SACs/BC-based detection platform showed selective and sensitive detection of nanomolar dopamine and demonstrated potential for real-time electrochemical biosensors.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Multidisciplinary
Won Il Kim, Jeong Seok Yeon, Hyunyoung Park, Hwi Jung Kim, Min Ju Kim, Jongsoon Kim, Ho Seok Park
Summary: A new cathode material, N,P-rGO/h-MoO2@S, has been developed to address the issues of lithium-sulfur batteries, improving their discharge capacity and cycling stability.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Hyun Chung, Gukhyun Lim, Seungjin Nam, Hoon-Hwe Cho, Jihyun Hong, Seok Su Sohn
Summary: The corrosion resistance of VCrCoNi medium-entropy alloys in a 0.5 M H2SO4 solution was studied by adjusting the V and Cr compositions and minimizing microstructural differences. The effects of different elements on the formation of passive film and subsequent corrosion resistance were discussed. It was found that increasing the Cr/V ratio improves the corrosion resistance by forming a Cr-enriched passive film, but it negatively affects the mechanical strength where V plays a crucial role. The optimal balance between mechanical strength and corrosion resistance was discussed based on electrochemical measurements and immersion test results.
Review
Electrochemistry
Hyunyoung Park, Yongseok Lee, Wonseok Ko, Myungeun Choi, Bonyoung Ku, Hobin Ahn, Junseong Kim, Jungmin Kang, Jung-Keun Yoo, Jongsoon Kim
Summary: Sodium-ion (Na-ion) batteries and potassium-ion (K-ion) batteries have emerged as promising candidates for next-generation secondary battery systems due to their cost-effectiveness and similar reaction mechanism to lithium-ion batteries. However, the challenges lie in their sluggish ionic kinetic and excessive volume change of the cathode material, caused by a larger ionic radius. Extensive research has been conducted to achieve high electrochemical properties, such as large reversible capacity, high power capacity, and long life. This review provides comprehensive information on the cathode material studies for Na-ion and K-ion batteries, compares their electrochemical properties with Li-ion batteries, and discusses future research directions, challenges, and prospects.
BATTERIES & SUPERCAPS
(2023)
Article
Chemistry, Multidisciplinary
Youngmin Ko, Kyoungoh Kim, Jaekyun Yoo, Giyun Kwon, Hyeokjun Park, Jihyeon Kim, Byungju Lee, Jun-Hyuk Song, Jinsoo Kim, Kisuk Kang
Summary: This study elucidates the kinetic mechanism of redox-mediated oxygen reduction reactions in lithium-oxygen batteries using benzoquinone derivatives. It reveals that the oxygen reduction by the redox mediator occurs via inner-sphere electron transfer, and its kinetics is significantly affected by the steric hindrance effects. The electrochemical performance is governed by both the kinetics of redox mediators and their steric hindrance.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
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)