Article
Chemistry, Physical
Kanglong Guo, Chunlei Zhu, Huaping Wang, Shihan Qi, Junda Huang, Daxiong Wu, Jianmin Ma
Summary: Increasing the cut-off voltage of cathodes improves the energy density of Li||LiCoO2 batteries, but also leads to rapid battery degradation due to oxidation and deterioration. However, by using bis-(benzenesulfonyl)imide (BBSI) as an additive, a uniform and highly Li+ conductive cathode electrolyte interphase (CEI) is constructed, which stabilizes the batteries at 4.6 cut-off voltage and exhibits superior cycling and high-rate performance. The CEI, consisting of LiF and conductive Li+ moieties, improves Li+ migration, alleviates cathode degradation, and reduces other secondary degradation factors. Li||LiCoO2 batteries with 1% BBSI-containing electrolyte sustain 81.30% of initial capacity after 300 cycles at 0.5C, and 88.27% of initial capacity even after 500 cycles at 2C/3C.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Lixin Qiao, Uxue Oteo, Maria Martinez-Ibanez, Alexander Santiago, Rosalia Cid, Eduardo Sanchez-Diez, Elias Lobato, Leire Meabe, Michel Armand, Heng Zhang
Summary: A non-corrosive sulfonimide salt is found to suppress corrosion of aluminum current collectors and improve the cycling performance of lithium metal batteries.
Article
Green & Sustainable Science & Technology
Fathima Ali Kayakool, Binitha Gangaja, Shantikumar Nair, Dhamodaran Santhanagopalan
Summary: The recycling and regeneration of graphite from spent Li-ion batteries can be utilized for the fabrication of Li-ion based all-carbon dual-ion batteries, achieving promising electrochemical performance.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2021)
Article
Chemistry, Physical
Ruxin Zhao, Xiang Li, Yubing Si, Shuai Tang, Wei Guo, Yongzhu Fu
Summary: By adding copper nitrate as an additive in the carbonate electrolyte, the growth of lithium dendrites is effectively inhibited, leading to a longer lifespan of Li-metal batteries based on LiMn2O4. This additive also helps in forming a stable solid electrolyte interphase (SEI) on the lithium metal surface and suppresses the decomposition of electrolyte and dissolution of Mn in LiMn2O4, resulting in a high capacity retention and coulombic efficiency of the battery.
ENERGY STORAGE MATERIALS
(2021)
Article
Energy & Fuels
Sireesha Pedaballi, Chia-Chen Li
Summary: Carbon fabric is proposed as an alternative current collector for water-processed NCM811 cathodes to prevent electrode corrosion. The interlaced fiber bundles in carbon fabric feature voids and a large surface area for electrode materials, while the network structure serves as a pathway for electron transport. However, a conductive agent is also needed to improve capacity retention in NCM811 cells, although too much of it can affect material distribution.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Engineering, Chemical
Zhaofeng Yang, Haifeng Yu, Yanjie Hu, Huawei Zhu, Yihua Zhu, Hao Jiang, Chunzhong Li
Summary: A novel Ti-doped LiNi0.4Mn1.6O4 cathode material with a pomegranate-like structure is reported in this study, which can enhance lithium ion transfer rate and reduce electrochemical polarization, leading to improved cycle performance and charge-discharge rate.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Chemistry, Physical
Gaeun Lee, Il Tae Kim, Jaehyun Hur
Summary: CuP2 is a phosphorous-rich transition metal phosphide with high theoretical capacity and intrinsic alleviation of volume change, making it a potential anode material for Li-ion batteries (LIBs). However, its electrochemical performance is limited due to low electrical conductivity and insufficient regulation of volume expansion. In this study, a CuP2-Te-C ternary composite was proposed as a high-performance anode material. The introduction of Te-C can enhance conductivity and mitigate cycling instability. The study comprehensively investigated the roles of Te and C, and determined an appropriate C content (25 wt%) for improved capacity and cycling stability. The CuP2-Te-C(25%) showed good cycling performance and rate capability. Electrochemical impedance spectroscopy analysis revealed its superior diffusivity and lower charge transfer resistance. This study provides new perspectives on high-performance metal-phosphide anode materials for LIBs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Hengtao Shen, Yongling An, Quanyan Man, Jingyan Wang, Chengkai Liu, Baojuan Xi, Shenglin Xiong, Jinkui Feng, Yitai Qian
Summary: In this work, controlled chemical prelithiation is used to improve the performance of two-dimensional siloxene nanosheet as an anode for lithium-ion batteries. The results show that a 15 min prelithiation process can achieve uniform SEI film and high coulombic efficiency, leading to enhanced performance of siloxene anode. The prelithiated siloxene anode exhibits high ICE, superior rate performance, and stable cycling performance, with an enhanced capacity retention of 94.3% when coupled with 5 V-class LiNi0.5Mn1.5O4 cathodes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Girum Girma Bizuneh, Chunlei Zhu, Junda Huang, Huaping Wang, Shihan Qi, Zhongsheng Wang, Daxiong Wu, Jianmin Ma
Summary: An electrolyte additive strategy is proposed to improve the stability and voltage of Li||LiCoO2 batteries, by constructing efficient LiNxOy-contained cathode electrolyte interphase and LiF-rich solid electrolyte interphase. The Li||LiCoO2 battery can operate stably up to 4.6 V, with high specific capacity and capacity retention.
Article
Electrochemistry
Jun Wei Yap, Tianyang Wang, Hanna Cho, Jung-Hyun Kim
Summary: This study comprehensively analyzes the impact of carbon nanotubes (CNT) and carbon nanofibers (CNF) composition on the performance of nano-Si anodes in lithium-ion batteries. The addition of CNT and CNF with high aspect ratios can establish a robust electronic conduction pathway in Si anodes, improving capacity retention and fast-charging capabilities. Electrochemical analysis shows that 5% - 10% CNT and CNF effectively suppress contact impedances growths in Si anodes. Precise control of the composition of CNT and CNF is crucial for achieving good electrode morphology and electrochemical properties for nano-Si anodes.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Qiongyu Zhou, Qinghui Li, Songli Liu, Xin Yin, Bing Huang, Minqi Sheng
Summary: A high-performance flexible poly(ethylene oxide) (PEO)-based composite electrolyte has been developed to enhance the safety and stability of all-solid-state batteries.
JOURNAL OF POWER SOURCES
(2021)
Article
Nanoscience & Nanotechnology
Sanghamitra Moharana, Geoff West, Marc Walker, Xinjie S. Yan, Melanie Loveridge
Summary: The addition of KPF6 in the electrolyte can promote the formation of a robust SEI layer, effectively inhibiting the growth of Li dendrites. The KPF6 additive can form a thin and durable SEI layer rich in LiF, which blocks the electron leakage pathways. Additionally, KPF6 additive can reside at defect sites, hindering the incoming of Li+ and restricting the growth of Li dendrites. Optimizing the electrode/electrolyte interphase by controlling the concentration of additives has implications for fast charging.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Xiaoxiao Han, Jiyu Cai, Xin Wang, Yongqiang Liu, Hua Zhou, Xiangbo Meng
Summary: This study compares the effects of carbon black and nitrogen-doped graphene nanosheets in lithium-sulfur batteries, finding that the 2D structure of N-GNS has lower structural defects and larger surface area, leading to higher capacity retention but hindered Li-ion transportation. In contrast, the 0D structure of CB facilitates Li-ion transportation but results in severe shuttling behavior of LPSs. Combining CB and N-GNS can achieve better performance in Li-S batteries.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Yuqi Pan, Victor Lo, Liuyue Cao, Anup Roy, Benjamin Chivers, Nikan Noorbehesht, Yuanyuan Yao, Jiani Wang, Li Wei, Yuan Chen
Summary: The research demonstrates that graphitic carbon materials generated in the catalytic decomposition of methane can be purified to high purity using either high-temperature thermal treatment or an alternative electrochemical method. These purified carbon materials show excellent conductivity and absorption capability, and can be used as efficient carbon conductive additives for batteries.
Article
Chemistry, Multidisciplinary
Yingmin Jin, Yumeng Li, Ruifan Lin, Xuebai Zhang, Yong Shuai, Yueping Xiong
Summary: This research presents a stable nanofiber framework for in situ polymerized solid-state lithium metal batteries (SSLMBs), which has built-in lithium ion transport channels and high interfacial lithium ion flux. By applying a molecular reinforcement protocol, the distribution of lithium ions on the lithium metal surface and the nucleation of lithium dendrites can be controlled, leading to improved cycling performance of the batteries.
Article
Nanoscience & Nanotechnology
Yasuyuki Kondo, Takeshi Abe, Yuki Yamada
Summary: This article presents the recent progress in understanding the mechanism and kinetics of interfacial Li+ transfer in high-rate lithium-ion batteries. It reviews the reported activation energies at different interfaces, discusses the mechanism and rate-determining step of the interfacial Li+ transfer, and introduces promising strategies to reduce the activation energy.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Tatau Shimada, Norio Takenaka, Yasunobu Ando, Minoru Otani, Masashi Okubo, Atsuo Yamada
Summary: In this study, the atomic-scale double-layer structure of MXene electrodes with different terminated halogen elements was systematically investigated using density functional theory calculations. The results showed a clear relationship between the atomic number of the terminated halogen atoms and the capacitance.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Hirohito Umeno, Kosuke Kawai, Daisuke Asakura, Masashi Okubo, Atsuo Yamada
Summary: Aqueous lithium-ion batteries are sustainable, low-cost, safe, and environmentally friendly. The use of high-salt-concentration strategy expands their electrochemical potential window, providing opportunities to explore high-performance electrode materials.
Article
Electrochemistry
Hirohito Umeno, Kosuke Kawai, Shin-ichi Nishimura, Daisuke Asakura, Masashi Okubo, Atsuo Yamada
Summary: This research reports on a high-capacity O2-type lithium-rich layered oxide Li1.22-x Ru0.78O2, which can achieve stable redox reactions and deliver a high capacity of 200 mAh g(-1).
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Michael Wilhelm, Ruth Adam, Aman Bhardwaj, Iuliia Neumann, Sung Hun Cho, Yuki Yamada, Tohru Sekino, Jianming Tao, Zhensheng Hong, Thomas Fischer, Sanjay Mathur
Summary: This study reports the development of a photo-rechargeable battery using dual-functional materials, electrospun vanadium oxide nanofibers coated with conductive carbon. The battery exhibits high discharge capacity and photoresponsive behavior, and the carbon coating enhances the stability and capacity retention of the battery.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Energy & Fuels
Seongjae Ko, Tomohiro Obukata, Tatau Shimada, Norio Takenaka, Masanobu Nakayama, Atsuo Yamada, Yuki Yamada
Summary: In this study, the authors investigate the factors affecting the reversibility of lithium-metal anodes and propose an electrolyte design to improve the cycling performance. They find that the lithium electrode potential and its association with the Li+ coordination structure play a crucial role in Coulombic efficiency and electrolyte decomposition. By enhancing ion-pairing solution structure, the authors achieve a significantly improved cycling performance.
Article
Chemistry, Physical
Wojciech Olszewski, Carlo Marini, Satoshi Kajiyama, Masashi Okubo, Atsuo Yamada, Takashi Mizokawa, Naurang Lal Saini, Laura Simonelli
Summary: The local structures of Ti based MXene-type electrode materials were investigated using Ti K-edge X-ray absorption fine structure measurements. The effects of temperature on the local bond lengths and their stiffness were studied. Selective etching was found to significantly affect the local structural properties of Ti based MXene materials, resulting in increased interatomic distances and higher achievable performances. These results highlight the importance of local atomic correlations as limiting factors in the diffusion capacity of ion batteries.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Kosuke Kawai, Masaki Fujita, Ryosei Iizuka, Atsuo Yamada, Masashi Okubo
Summary: Two-dimensional transition-metal carbides/nitrides (MXenes) have high capacitance, high-rate capability, and good cycle stability, making them ideal electrode materials for electrochemical energy storage devices. The different surface termination groups, such as -O, -OH, and -F, play an important role in the electrochemical properties of MXene electrodes.
Article
Electrochemistry
Akihisa Tsuchimoto, Masashi Okubo, Atsuo Yamada
Summary: To improve the cycle performance and energy efficiency of Li-rich cathode materials with higher energy density and oxygen redox activity, it is necessary to optimize the conditions such as excess lithium, transition metal species, and cutoff voltage. This study analyzed the dominant factors in the energy density of Li-rich cathode materials by using machine learning prediction models based on well-controlled experimental data. The results showed that choosing a moderate amount of excess lithium and increasing the cobalt contents are keys to achieving high energy density in long-term cycles.
Article
Chemistry, Physical
Atsuo Yamada, Atsushi Kitada, Seongjae Ko, Risa Ikeya, Yuki Yamada
Summary: Highly concentrated aqueous electrolytes have been developed by mixing two or more salts, leading to the discovery of a room-temperature Na-salt eutectic dihydrate melt with a wide potential window. The dihydrate melt enables reversible insertion/desertion of Na-ions into/from compounds located far beyond the stable potential windows of conventional aqueous electrolytes.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Green & Sustainable Science & Technology
Seongjae Ko, Xiao Han, Tatau Shimada, Norio Takenaka, Yuki Yamada, Atsuo Yamada
Summary: A Co-free cathode paired with a silicon suboxide (SiOx) anode in lithium-ion batteries (LIBs) can address the scarcity and supply chain risks of cobalt, leading to sustainable and high-performing LIBs.
NATURE SUSTAINABILITY
(2023)
Article
Chemistry, Multidisciplinary
Kosuke Kawai, Xiang-Mei Shi, Norio Takenaka, Jeonguk Jang, Benoit Mortemard de Boisse, Akihisa Tsuchimoto, Daisuke Asakura, Jun Kikkawa, Masanobu Nakayama, Masashi Okubo, Atsuo Yamada
Summary: Integrating anionic-redox with cationic-redox is a promising strategy, but hysteresis is a challenge in oxygen-redox cathodes. In this study, nonpolarizing and polarizing oxygen-redox reactions are found to coexist and compete in a specific material. Preventing the polarizing reaction is crucial for achieving nonpolarizing and energy-efficient oxygen-redox reactions.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Masashi Okubo, Kosuke Kawai, Zihan Ma, Atsuo Yamada
Summary: Sustainable development relies on technological advancements, particularly in electricity management and energy storage. Lithium-ion batteries, although widely used, still have limitations in energy density, power density, cost, lifespan, and safety. Further research and improvement are necessary to achieve efficient and stable battery systems.
ACCOUNTS OF MATERIALS RESEARCH
(2022)
Article
Chemistry, Physical
Jie Sheng, Jingshan He, Dun Ma, Yuanbo Wang, Wu Shao, Tian Ding, Ronghao Cen, Jingwen He, Zhihao Deng, Wenjun Wu
Summary: This study presents an innovative approach to improve the photovoltaic conversion characteristics and stability of perovskite solar cells through carbon electrode interface modification. By in-situ polymerization and carbonization on the surface of nano-graphite, a dendritic structure carbon electrode is formed, reducing the work function and aligning the energy levels with perovskite. This leads to improved charge and hole collection efficiency, resulting in increased photovoltaic conversion efficiency. Furthermore, the modified carbon electrode-based perovskite solar cells exhibit exceptional stability, maintaining high efficiency even without encapsulation.
Article
Chemistry, Physical
Guodong Shi, Jian Song, Xiaoxiao Tian, Tongtong Liu, Zhanjun Wu
Summary: This study demonstrates the improvement of mechanical properties and reduction of coefficient of thermal expansion (CTE) in graphene oxide (GO)/epoxy (EP) nanocomposites by enhancing the interface between GO and EP through functionalization and incorporating rigid-flexible interphases. The results reveal that the SiO2-PEA-GO hybrid exhibits better strengthening and toughening effects, as well as lower CTE, compared to the PEA-GO hybrid due to the presence of rigid-flexible interfaces with higher bonding strength and better energy dissipation mechanisms. Additionally, the nanocomposites with longer polyetheramine (PEA) molecules in the rigid-flexible interphases demonstrate higher strength and toughness, while maintaining a lower CTE. This work provides a promising strategy for constructing adjustable flexible-rigid interfacial structures and offers potential in developing GO/EP nanocomposites with high mechanical properties and low CTE.
Article
Chemistry, Physical
Rafal Janus, Sebastian Jarczewski, Jacek Jagiello, Piotr Natkanski, Mariusz Wadrzyk, Marek Lewandowski, Marek Michalik, Piotr Kustrowski
Summary: In this study, a facile procedure for the synthesis of CMK-1 and CMK-2 carbon replicas was developed. The method utilizes basic laboratory equipment and a renewable carbon source, and operates under mild conditions. The resulting carbon mesostructures exhibit exquisite replication fidelity and structural homogeneity, making them suitable for applications in various fields.
Article
Chemistry, Physical
Anqi Wang, Connor J. MacRobbie, Alex Baranovsky, Jean-Pierre Hickey, John Z. Wen
Summary: In this study, a novel polymer-free nanothermite aerogel with a wide range of nanoparticle loading was fabricated via a new additive manufacturing process. The SEM images showed a unique porous structure formed by extra thin rGO sheets, wrapping individual nanothermite clusters. The DSC-TGA results and high-speed combustion videos confirmed the enhanced energetic performance of the printed specimen.
Article
Chemistry, Physical
Wanze Wu, Misheng Zhao, Shiwei Miao, Xiaoyan Li, Yongzhong Wu, Xiao Gong, Hangxiang Wang
Summary: Superhydrophobic solar-driven interfacial evaporator is an energy-efficient technology for seawater desalination, which is easily fabricated using robust photothermal superhydrophobic coating and substrate. The created bifunctional coating on the melamine sponge substrate shows stable and highly efficient photothermal and superhydrophobic performance for seawater desalination. This superhydrophobic solar-driven interfacial evaporator is expected to have wide applications in seawater desalination.
Article
Chemistry, Physical
Zichen Xiang, Zhi Song, Tiansheng Wang, Menghang Feng, Yijing Zhao, Qitu Zhang, Yi Hou, Lixi Wang
Summary: This study presents a co-electrospinning synthesis strategy to fabricate lightweight and porous Co@C composite nanofibres with wideband microwave attenuation capacity. The addition of MOF-derived Co additives enhances the low-frequency absorption performance.
Article
Chemistry, Physical
J. Snow, C. Olson, E. Torres, K. Shirley, E. Cazalas
Summary: This study investigates the use of a perovskite-based graphene field effect transistor (P-GFET) device for X-ray detection. The sensitivity and responsivity of the device were found to be influenced by factors such as X-ray tube voltage, current, and source-drain voltage. Simulation experiments were conducted to determine the dose rate and energy incident on the device during irradiation.
Article
Chemistry, Physical
Zuzana Jankovska, Lenka Matejova, Jonas Tokarsky, Pavlina Peikertova, Milan Dopita, Karolina Gorzolkova, Dominika Habermannova, Michal Vastyl, Jakub Belik
Summary: This study provides new insights into microwave-assisted pyrolysis of scrap tyres, demonstrating that it can produce microporous carbon black with potential application in xylene adsorption. Compared to conventional pyrolysis, microwave pyrolysis requires less time and energy while maintaining similar adsorption capacity.
Article
Chemistry, Physical
Max Bommert, Bruno Schuler, Carlo A. Pignedoli, Roland Widmer, Oliver Groning
Summary: A detailed understanding of the interaction between molecules and two-dimensional materials is crucial for incorporating functional molecular films into next-generation 2D material-organic hybrid devices. This study compares the energy level alignment of different-sized fullerenes on a Moire superstructure and finds that C-84 fullerenes can be either neutral or negatively charged depending on slight variations of the electrostatic potential. This discovery suggests a new path to achieve ambipolar charge transfer without overcoming the electronic gap of fullerenes.
Article
Chemistry, Physical
Yuanjing Cheng, Xianxian Sun, Ye Yuan, Shuang Yang, Yuanhao Ning, Dan Wang, Weilong Yin, Yibin Li
Summary: The dual-structure aerogel (GS) consisting of flexible silica fibers and graphene honeycomb structures exhibits excellent resilience, flexibility, and reliability. It also shows remarkable wave absorbing performance, making it an ideal candidate for microwave absorption applications such as flexible electronics and aerospace.
Article
Chemistry, Physical
Shuyu Fan, Yinong Chen, Shu Xiao, Kejun Shi, Xinyu Meng, Songsheng Lin, Fenghua Su, Yifan Su, Paul K. Chu
Summary: Graphene coatings are promising solid lubrication materials due to their mechanical properties. This study presents a new method for in situ deposition of high-quality graphene coatings on hard substrates using NiCo solid solution and competitive reaction strategies. The graphene coating deposited on substrates with deep NiCo solid solution demonstrates superior low-friction and durability.
Article
Chemistry, Physical
Mengdi Wang, Sanyin Qu, Yanling Chen, Qin Yao, Lidong Chen
Summary: The improved thermoelectric properties of conducting polymers are achieved by selectively capturing single-walled carbon nanotubes (SWNTs) in a conducting polymer film, leading to increased carrier mobility and reduced thermal conductivity. The resulting composite film exhibits significantly higher electrical conductivity and lower thermal conductivity compared to films with a mixture of SWNTs. This work provides a convenient and efficient method to enhance the thermoelectric properties of conducting polymers.
Review
Chemistry, Physical
Heng Wei, Weihua Li, Kareem Bachagha
Summary: This article reviews the research progress of carbon nanotube-based microwave absorbing materials (MAMs) in recent years, covering the fundamental theory, design strategies, synthesis methods, and future development directions.
Article
Chemistry, Physical
Chenguang Shi, Junlong Huang, Zongheng Cen, Tan Yi, Shaohong Liu, Ruowen Fu
Summary: This study developed a high-performance Li metal host material, which achieved dendrite-free Li deposition with a low nucleation overpotential and high Coulombic efficiencies through the combination of Ti3C2-g-PV4P sheets and Ag nanoparticles. The full cells assembled with the Li@host anode and LiFePO4 cathode exhibited high discharge capacity and excellent cycling stability, demonstrating a perspective design for future energy storage devices.
Article
Chemistry, Physical
Tomotaro Mae, Kentaro Kaneko, Hiroki Sakurai, Suguru Noda
Summary: A new partial prelithiation method for SiO/C-CNT electrodes was developed, which showed reduced irreversible capacity and achieved high energy densities with good reversibility. The method allows for precise control of the degree of prelithiation and is applicable to various chemistries.
