Review
Chemistry, Physical
Xin Cao, Yu Qiao, Min Jia, Ping He, Haoshen Zhou
Summary: This study reviews the potential application of Li-rich and Li-excess oxides as cathode materials for next-generation Li-ion batteries, discusses the challenges in using Li-excess oxides, and explores mechanisms to address these issues. Future research directions in the field are also proposed based on advanced characterizations and theory calculations.
ADVANCED ENERGY MATERIALS
(2022)
Review
Chemistry, Physical
Zhaojin Li, Jinxing Yang, Tianjia Guang, Bingbing Fan, Kongjun Zhu, Xiaohui Wang
Summary: This paper summarizes the recent progress in controlled hydrothermal/solvothermal synthesis of LiFePO4 and explores the relationship between the synthesis conditions and the nucleation-and-growth of LiFePO4. The review covers surface decoration, lattice substitution, and defect control, while also discussing new research directions and future trends in the field.
Article
Chemistry, Multidisciplinary
Wei Zhu, Jingchao Zhang, Jiawei Luo, Cuihua Zeng, Hai Su, Jinfeng Zhang, Rui Liu, Enyuan Hu, Yuansheng Liu, Wei-Di Liu, Yanan Chen, Wenbin Hu, Yunhua Xu
Summary: A high-temperature shock (HTS) strategy is used for the ultrafast synthesis of cathode materials in seconds, with an ultrahigh heating rate leading to non-equilibrium reaction and fast reaction kinetics. This method avoids high energy and long time consumption, and has successfully synthesized mainstream cathode materials with good electrochemical performance.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Xudong Liu, Zhibin Ye
Summary: This study introduces a group of organic nitroaromatic compounds as novel high-energy cathode materials with record-high reversible capacities, demonstrating potential for next-generation alkali-ion batteries.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Yongfan Xie, Fangya Guo, Youxiang Zhang
Summary: A novel method of synthesizing coating layers on the surface of Ni-rich cathode materials using one-step calcination is proposed to improve the electrochemical performance. The LiNi0.8Co0.1Mn0.1O2 material with 5% Li2MnO3 coating layers exhibits enhanced cycling performance, delivering a capacity of 169.6 mAh g-1 with a capacity retention of 90.6% after 100 cycles at a high cut-off voltage.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Meng-Siou Wu, Nhu T. H. Luu, Teng-Hao Chen, Hailong Lyu, Te-Wei Huang, Sheng Dai, Xiao-Guang Sun, Alexander S. Ivanov, Jui-Chin Lee, Ilja Popovs, Watchareeya Kaveevivitchai
Summary: Organic electrode materials offer advantages such as low toxicity and sustainability, but improvements in redox potential, capacity, cycling stability, and electronic conductivity are needed to compete with inorganic-based compounds. The molecular design of HATAQ with extended pi-conjugation shows promising results for achieving exceptionally high energy density, rate capability, and cycling stability in organic electrodes.
ADVANCED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Chunmao Huang, Shenghong Liu, Yang Wang, Jingjie Feng, Yanming Zhao
Summary: NaVMoO6 with brannerite-type structure was successfully synthesized using a sol-gel method, and utilized as a cathode material for lithium ion batteries for the first time. The material showed stable reversible specific capacity, indicating its potential as a cathode material for LIBs and enriching the possibilities of molybdenum-based materials for this application.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Yoo Jung Choi, You Jin Kim, Suji Kim, Ga Yoon Kim, Won-Hee Ryu
Summary: Layered cathode materials, such as LiCoO2, have been synthesized for Li-ion batteries using a direct solution-calcination strategy. The addition of polyvinylpyrrolidone (PVP) as a functional agent in the synthesis process helps to eliminate surface Li residues and promote a uniform particle distribution. The solution-calcined cathode material shows improved cycling stability and rate capability compared to commercial LCO, with suppressed phase transition. This research provides a simple and versatile method for the synthesis of cathode materials, avoiding complicated steps and the formation of unwanted residual lithium compounds.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Kang Liu, Junxiong Wang, Mengmeng Wang, Qiaozhi Zhang, Yang Cao, Longbin Huang, Marjorie Valix, Daniel C. W. Tsang
Summary: In this study, a sequential and scalable hydro-oxygen repair (HOR) route was proposed for closed-loop recycling of spent LiFePO4 batteries. The route involves steps such as cathode electrode separation, oxidative extraction of lithium, and restoration of lithium iron phosphate crystals. The HOR route demonstrated efficient separation and extraction of materials, and the regenerated crystals showed comparable electrochemical capacity to commercial cathode materials. Life cycle assessment showed significant reduction in carbon emissions and smog release, contributing to a circular economy and decarbonization.
Article
Engineering, Environmental
Wenbiao Liang, Feng Jin, Yin Zhao, Liyi Shi, Quan Liu, Zhuyi Wang, Yi Wang, Meihong Zhang, Jiefang Zhu, Shuai Yuan
Summary: The single-crystal LiNi0.8Mn0.1Co0.1O2 (SC-NCM811) cathode with electro-chemo-mechanically compliant microstructure was successfully synthesized by microfluidic technology combined with the solid-state lithiation process. The optimized SC-NCM811 cathode has a small grain size, low cation mixing, and well layered structure, showing good electrochemical performance. Microfluidic technology is expected to provide a new strategy for preparing single-crystal Ni-rich cathode materials, which may extend to the commercial application of other cathode materials.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Katarzyna Redel, Andrzej Kulka, Katarzyna Walczak, Anna Plewa, Emil Hanc, Mateusz Marzec, Li Lu, Janina Molenda
Summary: This paper discusses the advantages of high-voltage Li-rich oxides as cathode materials for Li-ion batteries, analyzes the relationship between the structure evolution and electrochemical performance of the new Li-Mn-Ni-O group, and examines the origin of the extraordinary reversible capacity of Li [Li0.27Mn0.63Ni0.1]O-2.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Ceramics
Ziheng Sun, Jun Yu, Huizhong Zhao, Shaobai Sang, Han Zhang, Lei Peng, Yi Zhang, Huihua He
Summary: The focus of lightweight refractory is to replace high-density raw materials with lower-density raw materials in order to achieve equivalent volume replacement. In this study, porous mullite microspheres (PMM) were used to replace mullite particles in the preparation of mullite-cordierite saggars for Li-ion battery cathode materials. Various tests, including mechanical properties, thermal shock stability, and corrosion resistance, were conducted to confirm the quality standards of lightweight saggars. Compared to the samples with mullite particles, samples with PMM exhibit a more stable material structure and excellent performance, reducing mullite consumption and enhancing resistance to stress shedding during corrosion.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Quang Quoc Viet Thieu, Weldejewergis Gebrewahid Kidanu, Hong Diem Nguyen, Truc Linh Thi Nguyen, My Loan Phung Le, Van Hoang Nguyen, Dinh Quan Nguyen, Nhung Thi Tran, Xuan Vien Nguyen, Il Tae Kim, Tuan Loi Nguyen
Summary: A nanostructured Ni-ferrite material, NiFe2O4, with superior electrochemical properties, including high reversible capacity and long cyclability, was successfully synthesized through co-precipitation in hot water followed by an annealing process. The excellent performance can be attributed to the nano-sized materials, the unique properties of the Ni-ferrite spinel, as well as the protection and catalytic effect of the spinel structure and the presence of Fe and Ni metals.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Jia Jin, Jinping Wei, Zhen Zhou, Zhaojun Xie
Summary: The 5V spinel LiNi0.5Mn1.5O4 cathode materials were prepared with different morphologies and characterized. The electrochemical properties of the materials were studied, and the LiNi0.5Mn1.5O4 material with single crystalline morphology showed better performance compared to the polycrystalline morphology. The differential scanning calorimetry analysis also showed that the single crystalline material was more stable than the polycrystalline material.
Review
Green & Sustainable Science & Technology
Youngjun Shin, Seoa Kim, Sanghyuk Park, Jimin Lee, Jihyeon Bae, Dongwoo Kim, Hyeoncheol Joo, Sungho Ban, Haeun Lee, Yonghoon Kim, Kyungjung Kwon
Summary: This review comprehensively covers the direct recycling process of spent Li-ion batteries (LIBs), including liberation and regeneration processes, separation technologies, degradation mechanisms of cathode active materials, regeneration methods, and electrochemical performance of regenerated materials. The impacts of impurities during the direct recycling process are discussed, and research issues for commercialization are suggested.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Review
Chemistry, Physical
Qianyu Hu, Kunfeng Chen, Fei Liu, Mengying Zhao, Feng Liang, Dongfeng Xue
Summary: This paper provides an overview of the application and challenges of machine learning in materials prediction. Taking solid-state electrolytes as an example, it outlines the general process of machine learning in materials prediction and reviews recent approaches and specific applications. The paper also highlights the obstacles caused by disciplinary span and aims to raise awareness among materials scholars about the application of machine learning in materials prediction.
Review
Chemistry, Multidisciplinary
Xiangfei Sun, Kunfeng Chen, Feng Liang, Chunyi Zhi, Dongfeng Xue
Summary: This article reviews the material design and manufacturing technology of different micro-supercapacitors (MSCs) in recent years, along with the integration of their devices to achieve target applications. The future development directions and challenges of MSCs are also critically discussed.
FRONTIERS IN CHEMISTRY
(2022)
Article
Engineering, Electrical & Electronic
Ming Li, Xin Xia, Kunpeng Li, Shuxian Wu, Jie Zou, Kunfeng Chen, Gongbin Tang
Summary: SAW resonators based on 36 degrees YX-LiTaO3/SiO2/4H-SiC multilayer substrates are fabricated in this work to effectively suppress acoustic energy leakage. By using interdigital transducers (IDT) with a tilted angle, a multilayer resonator with transverse mode suppression is achieved. The results show that the multilayer resonator exhibits extremely high Bode-Q and impedance ratio, and achieves a high figure of merit.
IEEE ELECTRON DEVICE LETTERS
(2022)
Review
Materials Science, Multidisciplinary
Guoqiang Shi, Dongfeng Xue
Summary: Functional materials exhibit diverse performances due to degrees of freedom in the lattice framework. Research on quantum materials can provide insights into multiscale processes. Understanding the sources of properties of functional materials from multiple degrees of freedom is crucial for their design.
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
(2022)
Article
Physics, Applied
Feng Liu, Kunfeng Chen, Chao Peng, Dongfeng Xue
Summary: This study investigates the multiscale behaviors of sapphire crystal growth along different crystal directions through theoretical and experimental studies. The results show that the growth behavior of sapphire along the c-axis is more complex compared to that along the a- and m-axes, involving solid-liquid and solid-solid transformations. Moreover, an abrupt change in the interfacial structure inhibits the transformation of liquid Al2O3 into α-Al2O3 along the c-axis.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Chemistry, Physical
Chun Cai, Dantong Zhang, Qi Zhang, Kunfeng Chen, Wenchao Hua, Chao Peng, Dongfeng Xue
Summary: The stability of lattice oxygen and transition metal sites in LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode were systematically explored, and the importance of manganese was demonstrated. The effects of lithium vacancies on lattice oxygen and transition metal were investigated through vacancy formation energy, unpaired spins, and net charge. This study provides insights into oxygen release and transition metal dissolution in Ni-rich NCM811.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Editorial Material
Multidisciplinary Sciences
Feng Liu, Kunfeng Chen, Dongfeng Xue
Summary: Large-size crystals are essential in various fields, but their preparation remains difficult. Making breakthroughs in the theory and technology of large-size crystal growth is one of the top challenges in science and technology. Artificial intelligence is expected to play a significant role in achieving fast and large-size crystal growth.
Article
Chemistry, Multidisciplinary
Fei Liu, Mengying Zhao, Kunfeng Chen, Mei Hu, Dongfeng Xue
Summary: This work demonstrates that Ce3+-regulated CoNi-LDHs significantly enhance the kinetics of electron transfer and ion motion by increasing layer positive charges and weakening O-H bonds. The addition of Ce3+ also decreases the energy barrier of proton diffusion and increases the hole carrier concentration, resulting in high rate capacitance and fast charge storage kinetics.
Article
Chemistry, Multidisciplinary
Xianjie Zhang, Feng Liu, Kunfeng Chen, Guilin Zhuang, Chao Peng, Dongfeng Xue
Summary: Investigating the liquid structure of yttrium aluminum garnet (YAG) at high temperatures is significant for various fields, and molecular dynamic simulations were used to study the structure of YAG within a certain temperature range and to grow a YAG single crystal. The coordination number and bond length between cations and anions changed after melting, which can be explained by Pauling's third rule. In the liquid YAG, the coordination number decreased and the main structural units were AlO4 and YO7, which provided insight into phase selection and enabled rapid growth of YAG using the Czochralski method.
Proceedings Paper
Engineering, Electrical & Electronic
Ming Li, Xin Xia, Kunpeng Li, Shuxian Wu, Kunfeng Chen, Jie Zou, Gongbin Tang
Summary: SAW devices based on multilayer substrate offer excellent solution for higher performance filters in the RF industry due to their high-quality factors, small temperature coefficient of frequency, and high stability. In this study, SAW resonators based on a multilayer substrate were simulated and fabricated, achieving a spurious free response and high figure of merit through careful selection of material thickness and calculation of power flow angle.
2022 IEEE MTT-S INTERNATIONAL MICROWAVE WORKSHOP SERIES ON ADVANCED MATERIALS AND PROCESSES FOR RF AND THZ APPLICATIONS, IMWS-AMP
(2022)
Article
Chemistry, Multidisciplinary
Abu Talha Aqueel Ahmed, Sankar Sekar, Shubhangi S. Khadtare, Nurul Taufiqu Rochman, Bathula Chinna, Abu Saad Ansari
Summary: In this study, MnCo2S4 nanosheet catalyst was successfully synthesized and found to exhibit superior performance in hydrogen evolution. Compared to MnCo2S4, MnCo2S4 showed low overpotentials, moderate Tafel slope, and excellent sustainability. The outstanding performance can be attributed to the increased number of electrochemically active sites and enhanced electronic conductivity on the catalyst surface.
Article
Chemistry, Multidisciplinary
Victor V. Maltsev, Elena A. Volkova, Elizaveta V. Koporulina, Diana D. Mitina, Vladimir L. Kosorukov, Anna I. Jiliaeva, Daniil A. Naprasnikov, Konstantin N. Gorbachenya, Viktor E. Kisel
Summary: The phase relationships, crystal properties and luminescence kinetics of two complex systems were studied, including unit cell parameters, segregation coefficients of impurities, and lifetimes of energy levels.
Article
Chemistry, Multidisciplinary
Xiaoman Zhang, Wangwang Xu, W. J. Meng, Andrew C. Meng
Summary: This study successfully grew high-quality single crystal AlScN nanowires through ultra-high vacuum reactive sputtering technique and characterized their structure and properties. The nanowires exhibit significantly reduced mosaic spread and predominantly single ferroelectric domains, as well as a high piezoelectric constant.
Article
Chemistry, Multidisciplinary
Tom E. de Vries, Elias Vlieg, Rene de Gelder
Summary: Networks are important for describing relationships between people, roads between cities, reactions between chemicals, and other interactions. Bipartiteness, dividing the network into two groups, can facilitate the study of the network's structure. We have developed an algorithm that can find a near-optimal bipartisation within a reasonable time frame and used it to uncover the hidden structure of the CSD cocrystal network.
Article
Chemistry, Multidisciplinary
Chuchu Han, Jing Yang, Xin Zhang, Aisen Li, Jiang Peng
Summary: An elastic crystal based on a photo-reactive acylhydrazone derivative is reported, which exhibits reversible bending behavior under UV irradiation and heating. The crystal undergoes reversible E<->Z isomerization under light and heating conditions. The crystal demonstrates excellent elastic properties and the bending can be controlled to control the output direction of red light.
Article
Chemistry, Multidisciplinary
Lingfeng Zhang, Yu Wang, Yefeng Wang, Shuai Liu, Na Zhang, Mingmin Yang, Haixia Ma, Zhaoqi Guo
Summary: This study designs and synthesizes a series of high-energy salts compounds without heavy metal ions and azide groups. The molecular structures and stability of the compounds are confirmed through single-crystal X-ray diffraction and intermolecular interaction analysis. Furthermore, the thermal stability, energetic properties, and electrical initiation properties of the compounds are investigated, suggesting their potential as primary explosives.
