Article
Multidisciplinary Sciences
T. M. M. Heenan, I. Mombrini, A. Llewellyn, S. Checchia, C. Tan, M. J. Johnson, A. Jnawali, G. Garbarino, R. Jervis, D. J. L. Brett, M. Di Michiel, P. R. Shearing
Summary: This study characterizes the temperature and mechanical strain of high-rate lithium-ion batteries using advanced synchrotron XRD methods. The results show that the discharge time and optimization strategy significantly affect the internal temperature of the battery under the same current. The temperature rise is caused by heat accumulation, which is influenced by the charging protocol and battery degradation.
Article
Materials Science, Multidisciplinary
Xinwei Zhou, Tianyi Li, Yi Cui, Melissa L. Meyerson, Jason A. Weeks, C. Buddie Mullins, Shengfeng Yang, Yuzi Liu, Likun Zhu
Summary: In this study, the microstructure and composition of germanium nanopores formed at the end of delithiation were investigated using different microscopy techniques, showing a significant accumulation of Li inside the nanopores.
APPLIED MATERIALS TODAY
(2021)
Review
Electrochemistry
Hui Zhang, Yashi Wang, Shilong Guo, Yiqing Hui, Hanyue Wei, Jianjun Song, Xiaoxian Zhao
Summary: This paper summarized the preparation techniques of MoS2 hollow structural materials with different dimensions, including the hard template, soft template, self-template, and template-free approaches. The 0D hollow MoS2 exhibits improved diffusion kinetics of ions and electrons and restricts the stacking of MoS2. In addition, the 1D and 3D hollow MoS2 provide oriented electron diffusion and perforative pores for electrolyte permeation and more active sites, resulting in excellent rate capability and cycling stability. This paper provides inspiration for constructing MoS2 hollow structural materials and offers constructive suggestions for synthesizing hollow materials with excellent electrochemical performance.
BATTERIES & SUPERCAPS
(2023)
Article
Chemistry, Physical
Kingo Ariyoshi, Nan Ukumori
Summary: For efficient use in automobiles and stationary appliances, lithium-ion batteries require long cycle lives, which are hindered by particle fracture. This study investigated particle fracture phenomena in single-crystal LiMn2O4, revealing a close relationship between crack patterns and changes in lattice dimensions for lithium-insertion materials.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Samia Said, Zhenyu Zhang, Rebecca R. C. Shutt, Hector J. Lancaster, Dan J. L. Brett, Christopher A. Howard, Thomas S. Miller
Summary: Black phosphorus (BP) has shown promise as a high-performance alkali-ion battery anode due to its high specific capacity and fast alkali-ion transport. However, the batteries face serious irreversible losses and poor cycling stability, which are attributed to alloying. By studying the degradation mechanisms of BP anodes, researchers can develop protocols to improve the performance of next-generation high-capacity alkali-ion batteries.
Article
Chemistry, Multidisciplinary
Samia Said, Zhenyu Zhang, Rebecca R. C. Shutt, Hector J. Lancaster, Dan J. L. Brett, Christopher A. Howard, Thomas S. Miller
Summary: This study reveals the degradation mechanisms of black phosphorus (BP) alkali-ion battery anodes through operando electrochemical atomic force microscopy (EC-AFM) and ex situ spectroscopy. It is found that BP wrinkles and deforms during intercalation, and undergoes complete structural breakdown upon alloying. The solid electrolyte interphase (SEI) is also unstable and tends to nucleate at defects, but disintegrates upon desodiation.
Article
Electrochemistry
Christian Weisenberger, David K. Harrison, Chengke Zhou, Volker Knoblauch
Summary: In this study, a comprehensive physicochemical post-mortem analysis was conducted to investigate the microstructural and phase composition changes of graphite anodes in LiNi0.6Co0.2Mn0.2O2//Graphite pouch cells during cyclic ageing and their impact on lithium intercalation kinetics. The findings revealed that Li plating and loss of cyclable lithium were the main causes of capacity fade in the cells. Cycling resulted in pore clogging of the anode, leading to increased transport resistance for Li-ions and slower charge transfer reactions. The combination of complementary methods confirmed the hypothesis of pore clogging, deterioration of anode kinetics, and subsequent inhomogeneous lithiation triggering Li plating.
ELECTROCHIMICA ACTA
(2023)
Article
Thermodynamics
Yalun Li, Xinlei Gao, Xuning Feng, Dongsheng Ren, Yan Li, Junxian Hou, Yu Wu, Jiuyu Du, Languang Lu, Minggao Ouyang
Summary: This study comprehensively analyzes the changes in battery eruption temperature during thermal runaway after fast charging, and reveals the effects of lithium plating on gas production. The research contributes to a deeper understanding of the characteristics of thermal runaway after fast charging and provides valuable insights for the safe design and management of LIBs.
Article
Engineering, Multidisciplinary
Xiaofei Wang, Qi Tong
Summary: By using a concurrently-coupled and multi-physical model based on peridynamics, we have successfully simulated the delayed fracture in electrodes of lithium-ion batteries under mechanical and chemical loads, and revealed the key mechanisms during the fracture process, providing a useful tool for the design of lithium-ion batteries.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2023)
Article
Chemistry, Physical
Arvinder Singh, Ozlem Sel, Hubert Perrot, Veronique Balland, Benoit Limoges, Christel Laberty-Robert
Summary: This study investigates the highly reversible proton-coupled MnIV and MnII conversion in mild aqueous buffered electrolyte using 3D free-standing electrospun CNF electrodes as conductive scaffolds. The experimental results show that the free-standing CNF electrodes can maintain high charge capacity and cycling efficiency even at high MnO2 loading. This combination could be a striking approach for developing high energy efficiency MnO2-based mild aqueous batteries.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Engineering, Environmental
Xiang Li, Wei Liu, Yan Wang, Linze Lv, Huaiwei Feng, Weibo Huang, Yu Sun, Weixing Xiong, Honghe Zheng
Summary: Covalent organic frameworks (COFs) have great potential as electrode materials for high-performance lithium-ion batteries (LIBs), due to their easy structure control, abundant tunable porous structures, and reversible redox behavior of electroactive organic groups. However, most reported COFs have low capacity due to the inability of the backbone moiety's aromatic conjugated structure to participate in redox reactions. In this study, an imine bond-rich COF (TAACOF) with reversible Li-ion bonding was developed, which greatly improved the electrode capacity by inducing lithium ions to combine with the aromatic conjugated structure.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Jaehoon Choi, Omid Zabihi, Mojtaba Ahmadi, Minoo Naebe
Summary: This study presents a promising approach for fabricating high-performance structural batteries with enhanced energy storage and structural capabilities.
Article
Chemistry, Physical
Ji Ma, Yuankun Li, Xiaojie Wei, Chunting Liu
Summary: Reduction roasting strategy was employed to transform hematite into powerful anode materials to store Li+, Na+, and K+ ions, constructing a porous structure to enhance ion accessibility. The newly-designed anodes were tested for storage capacity, cycling stability, and rate performances, while cyclic voltammetry curves and electrochemical impedance spectra were measured to unveil ion-storage mechanisms.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Hideaki Oka, Takamasa Nonaka, Yasuhito Kondo, Yoshinari Makimura
Summary: In this study, an electrochemical cell capable of controlled overcharging and temperature regulation is developed, and the reactions between the electrodes and the electrolyte are investigated during heated overcharging. The results show that higher temperatures during overcharging lead to increased side reactions in the positive electrode, while the negative electrode gradually increases side reactions with increasing temperature in the normal charge-discharge region. The side reactions are induced by the oxidative decomposition of the electrolyte at the positive electrode.
JOURNAL OF POWER SOURCES
(2023)
Article
Energy & Fuels
Runjie Yang, Guoqing Yu, Zegang Wu, Tingting Lu, Tao Hu, Fengqin Liu, Hongliang Zhao
Summary: This study examines the performance of aged aluminum oxide ceramic-coated polyethylene separators (PE-Al2O3 separators) used in lithium-ion batteries. The cycling process of the batteries leads to the accumulation of degradation products on the separator surface, resulting in decreased porosity, ionic conductivity, and increased internal resistance. The mechanical properties of the separator deteriorate with higher current rates and the number of cycles. After 200 cycles at 1.5C, the tensile strength of the aged separator decreases by approximately 6.70%. The aging process also causes a decrease in wettability and an increase in the contact angle with the electrolyte.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Yuta Kimura, Aina Tomura, Mahunnop Fakkao, Takashi Nakamura, Nozomu Ishiguro, Oki Sekizawa, Kiyofumi Nitta, Tomoya Uruga, Toyoki Okumura, Mizuki Tada, Yoshiharu Uchimoto, Koji Amezawa
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2020)
Article
Energy & Fuels
Titus Masese, Kazuki Yoshii, Kohei Tada, Minami Kato, Satoshi Uchida, Keigo Kubota, Toshiaki Ina, Toyoki Okumura, Zhen-Dong Huang, Junya Furutani, Yuki Orikasa, Hiroshi Senoh, Shingo Tanaka, Masahiro Shikano
Article
Chemistry, Physical
Yuta Kimura, Mahunnop Fakkao, Takashi Nakamura, Toyoki Okumura, Nozomu Ishiguro, Oki Sekizawa, Kiyofumi Nitta, Tomoya Uruga, Mizuki Tada, Yoshiharu Uchimoto, Koji Amezawa
ACS APPLIED ENERGY MATERIALS
(2020)
Article
Electrochemistry
Kazuki Yoshii, Hisao Kiuchi, Noboru Taguchi, Masahiro Shikano, Eiichiro Matsubara, Hikari Sakaebe
Article
Chemistry, Physical
Toyoki Okumura, Tomonari Takeuchi, Hironori Kobayashi
Summary: An impurity-free interface was achieved in an oxide-based all-solid-state battery (ASSB) through cosintering, with enhanced thermal stability between the LiMO electrode materials and LISICON-type LGVO electrolyte. The high ionic conductivity of LGVO facilitated good reversible capacity in the NMC electrode, making it a promising property in oxide-based ASSBs.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Multidisciplinary Sciences
Titus Masese, Yoshinobu Miyazaki, Josef Rizell, Godwill Mbiti Kanyolo, Chih-Yao Chen, Hiroki Ubukata, Keigo Kubota, Kartik Sau, Tamio Ikeshoji, Zhen-Dong Huang, Kazuki Yoshii, Teruo Takahashi, Miyu Ito, Hiroshi Senoh, Jinkwang Hwang, Abbas Alshehabi, Kazuhiko Matsumoto, Toshiyuki Matsunaga, Kotaro Fujii, Masatomo Yashima, Masahiro Shikano, Cedric Tassel, Hiroshi Kageyama, Yoshiharu Uchimoto, Rika Hagiwara, Tomohiro Saito
Summary: Honeycomb layered oxides are a class of emerging materials with peculiar physicochemical properties. The authors report the synthesis and electrochemical energy storage characterizations of a mixed-alkali honeycomb layered oxide material capable of storing Na and K ions simultaneously.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Guowei Zhao, Kota Suzuki, Toyoki Okumura, Tomonari Takeuchi, Masaaki Hirayama, Ryoji Kanno
Summary: In this study, lithium superionic conductors with gamma-Li3PO4-type structures were developed to investigate the multicomponent effects on ion-conducting properties. The results showed that framework cations with larger ionic radii exhibited enhanced conductive properties, and the changes in ionic conductivity associated with the ionic radius were larger in ternary systems than those in binary systems.
CHEMISTRY OF MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Miyuki Sakakura, Kazutaka Mitsuishi, Toyoki Okumura, Norikazu Ishigaki, Yasutoshi Iriyama
Summary: Combining Garnet-type LLZ and LISICON-type LGVO as a multilayer solid electrolyte sheet can effectively reduce reactivity issues during the sintering process, improving the performance and cycle life of solid-state batteries.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Yuta Kimura, Su Huang, Takashi Nakamura, Nozomu Ishiguro, Oki Sekizawa, Kiyofumi Nitta, Tomoya Uruga, Tomonari Takeuchi, Toyoki Okumura, Mizuki Tada, Yoshiharu Uchimoto, Koji Amezawa
Summary: A method combining operando computed tomography and X-ray absorption near-edge structure spectroscopy (CT-XANES) is proposed in this paper to directly track the evolution of the 3D distribution of local capacity loss in battery electrodes. The method enables a five-dimensional analysis of degradation, including spatial coordinates, time, and chemical state. It quantifies the spatiotemporal dynamics of local capacity degradation and correlates it with overall electrode performance, providing critical insights for identifying degradation factors and developing batteries with long-term stability.
Article
Chemistry, Multidisciplinary
Toyoki Okumura, Yoshitaka Shiba, Noriko Sakamoto, Takeshi Kobayashi, Saori Hashimoto, Kentaro Doguchi, Harunobu Ogaki, Tomonari Takeuchi, Hironori Kobayashi
Summary: By substituting tetravalent ions and creating vacancies, the ionic conductivity of Li6Y(BO3)(3) (LYBO) was enhanced, leading to good reversible capacities in solid-state batteries.
Article
Nanoscience & Nanotechnology
Masahiro Mori, Shingo Tanaka, Masahiro Shikano, Hikari Sakaebe
Summary: By calculating the stable atomic and electronic states of vanadium-substituted trirutile-type LixFeF3, it was found that the x = 0.50 configurations were the most stable for all y values studied. In cases where Fe and V coexisted, compositions with the same Li insertion as Fe substitution were energetically stable. The results suggest that Fe (or V) in LixFe1-yVyF3 preferentially decreases (or increases) its formal valence state with Li insertion.
Article
Chemistry, Physical
Keiji Shimoda, Masahiro Shikano, Miwa Murakami, Hikari Sakaebe
JOURNAL OF POWER SOURCES
(2020)
Article
Chemistry, Multidisciplinary
Kazuki Yoshii, Noboru Taguchi, Takeshi Miyazaki, Masahiro Shikano, Hikari Sakaebe
CHEMICAL COMMUNICATIONS
(2020)
Article
Chemistry, Physical
Toyoki Okumura, Sou Taminato, Yoshinobu Miyazaki, Michinori Kitamura, Tomohiro Saito, Tomonari Takeuchi, Hironori Kobayashi
ACS APPLIED ENERGY MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Hitomi Nakamura, Kenji Shinozaki, Toyoki Okumura, Katsuhiro Nomura, Tomoko Akai