Article
Chemistry, Physical
Junghoon Yang, Jin-Myoung Lim, Mihui Park, Gi-Hyeok Lee, Suwon Lee, Maenghyo Cho, Yong-Mook Kang
Summary: Layer-structured oxide cathodes have various phases depending on Na ion contents, with off-stoichiometry impacting properties like capacity and cyclic stability. Thermal activation process helps maintain stoichiometry, reduce Na ion loss, and improve electrochemical performance of materials.
ADVANCED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Neeraja Nair, Shantikumar Nair, Senthilkumar Baskar
Summary: P2-Na x TMO2 (x ≤ 0.67, TM-transition metal) oxides are promising cathode materials for Na-ion batteries. However, they suffer from Na+-vacancy ordering and huge structural transformations. This study investigates the effects of Li-B doping on P2-type Na0.67Ni0.33Mn0.67O2 and successfully improves the Na content, resulting in high capacity and cycling stability.
Article
Chemistry, Physical
Hu-Rong Yao, Wei-Jun Lv, Xin-Guang Yuan, Yu-Jie Guo, Lituo Zheng, Xin-An Yang, Jiaxin Li, Yiyin Huang, Zhigao Huang, Peng-Fei Wang, Yu-Guo Guo
Summary: Researchers have proposed a new strategy for improving the electrochemical performance of P2-type Na-based layered oxides in Na-ion batteries. By forming P2 materials with lower Na content and a delocalized electronic structure, the unfavorable rearrangement of Na+/vacancy ordering can be avoided. This leads to excellent electrochemical performance with high reversible capacity, superior rate performance, and good cycling stability.
Article
Chemistry, Physical
Feng Li, Yuhang Tian, Yanyun Sun, Peiyu Hou, Xianqi Wei, Xijin Xu
Summary: In this study, a novel dual cationic codoping strategy using Co and Li doping was proposed to improve the structural stability and performance of manganese-based P2-type oxides as cathodes for sodium-ion batteries (SIBs). Experimental results showed that the Li/Co codoped P2-type oxide exhibited outstanding cycling stability and high-rate capability. Furthermore, the full-cell composed of the codoped P2-type positive and hard carbon negative demonstrated high energy density, good lifespan, and high-rate property.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Energy & Fuels
Ashmitha Anilkumar, Neeraja Nair, Shantikumar Nair, Senthilkumar Baskar
Summary: P2 and O3-type sodium layered oxides (NaxTMO2) are considered as the most promising cathodes for sodium-ion batteries. The P2-type oxides outperform O3 in terms of fast sodium diffusion and high-rate kinetics. The P2-structure, however, has a low initial charge capacity due to sodium deficiency, which limits its practical application. In addition, P2-O2 phase transition and Na+/vacancy ordering degrade the cycling performance. Dual doping strategy, such as Li-Cu dual doping, can mitigate these issues and improve the performance of P2-type cathodes.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Min Li, Mattia Gaboardi, Angelo Mullaliu, Mariam Maisuradze, Xilai Xue, Giuliana Aquilanti, Jasper Rikkert Plaisier, Stefano Passerini, Marco Giorgetti
Summary: This study investigates two types of manganese hexacyanoferrates (MnHCF) materials with different vacancy contents and finds that the sample with lower vacancy content exhibits better electrochemical performance in cycled electrodes compared to the sample with higher vacancy content.
Article
Nanoscience & Nanotechnology
Balaji Sambandam, Muhammad H. Alfaruqi, Sunhyeon Park, Seunggyeong Lee, Sungjin Kim, Jun Lee, Vinod Mathew, Jang-Yeon Hwang, Jaekook Kim
Summary: Magnesium-ion-substituted, sodium-deficient layered manganese oxide cathodes were synthesized and investigated for their electrochemical performance in sodium-ion batteries. The results showed that the P2-phase exhibited higher reversible capacity retention compared to the P3-phase, attributed to its excellent structural stability.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Zhengbo Liu, Chao Peng, Jun Wu, Tingting Yang, Jun Zeng, Fangkun Li, Anthony Kucernak, Dongfeng Xue, Qi Liu, Min Zhu, Jun Liu
Summary: High Ni content is effective for obtaining high specific capacity in transition metal oxide materials. Excess Ni elements can form Jahn-Teller active Ni3+ ions, which promote the de-/intercalation of Na+ ions. The Ni-rich material shows reversible high capacity and excellent cycle stability in a specific voltage range.
Article
Materials Science, Multidisciplinary
Meichen Guo, Wu Tang, Yan Hong, Bangshuai Wei, Jiahui Hu, Fei Yu, Cong Fan
Summary: The researchers proposed the surface self-carbonization of organic electrodes to overcome the dissolution challenge faced by small-molecule organic cathodes in sodium-ion batteries (SIBs). They successfully formed a carbon layer on the surface of NTCDI-DAQ particles, eliminating dissolution without affecting the electrochemical properties. NTCDI-DAQ@C exhibited excellent discharge capacity and cycling stability, making it one of the best-performing small-molecule organic cathodes reported for SIBs.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Physical
Dengmei Zhou, Chong Zeng, Dong Ling, Tao Wang, Zitian Gao, Jie Li, Liangliang Tian, Yi Wang, Wanxia Huang
Summary: The Na0.67Fe0.5Mn0.5-xMgxO2 compound was synthesized by solid state reaction, and the structure gradually transformed from P2 phase to O3 phase with the increase of Mg content. The prepared hybrid P2/O3 phase transition metal oxides exhibited high electrochemical performance, suggesting their significant application potential for sodium-ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Di Li, Chuan Wang, Jiahui Hu, Wu Tang, Shan Jia, Meichen Guo, Cong Fan
Summary: This article introduces a new organic polymer cathode, poly(9,10-phenanthraquinone-alt-benzene) (PPQ), and investigates its performance in sodium-ion batteries. The experimental results show that PPQ exhibits good cycling stability and discharge capacity. This research suggests the potential application of organic polymer cathodes in sodium-ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Multidisciplinary Sciences
Fang Fu, Xiang Liu, Xiaoguang Fu, Hongwei Chen, Ling Huang, Jingjing Fan, Jiabo Le, Qiuxiang Wang, Weihua Yang, Yang Ren, Khalil Amine, Shi-Gang Sun, Gui-Liang Xu
Summary: A strategy of stabilizing the structure and promoting anionic redox through configurational entropy and ion-diffusion structural tuning is reported for Mn-rich layered cathodes in Na-based batteries. The developed P2-type layered cathodes possess improved structural and thermal stability, faster anionic redox kinetics, and higher capacity retention.
NATURE COMMUNICATIONS
(2022)
Article
Electrochemistry
Ziheng Zhang, Yang Ni, Maxim Avdeev, Wang Hay Kan, Guang He
Summary: VOPO4 is a potential cathode candidate for sodium-ion batteries with high capacity and multi-electron reactions. Experimental results on different polymorph cathodes reveal that the α(I) cathode shows better cycling stability for deep sodiation. Theoretical studies suggest similar Na-ion migration pathways in VOPO4·2H2O and α(I)-NaVOPO4, with negative effect of H2O molecules on Na-ion diffusion in the hydrate cathode.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Ji Eun Wang, Heejin Kim, Young Hwa Jung, Do Kyung Kim, Dong Jun Kim
Summary: This study presents a lithium-substituted Fe/Mn-based P2/O3 layered oxide that overcomes structural instability and effectively constrains undesirable phase transitions through honeycomb ordering. The results highlight the correlation between the P2/O3 biphasic structure and electrochemical performance.
Article
Chemistry, Multidisciplinary
Yawei Chen, Shiyang Wang, Yulin Jie, Zhanwu Lei, Ruiguo Cao, Shuhong Jiao
Summary: NaNCM ternary materials were synthesized by solid-phase reaction with well-regulated temperature, characterized by XRD and cross-section SEM, showing different initial specific capacities and capacity retention rates. High-nickel and low-cobalt materials need to improve rate capability, and ex-situ XRD reveals structure evolution during cycling.
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
(2021)
Article
Nanoscience & Nanotechnology
Hekang Zhu, Tingting Yang, Pui-Kit Lee, Zijia Yin, Yu Tang, Tianyi Li, Leighanne C. Gallington, Yang Ren, Denis Y. W. Yu, Qi Liu
Summary: A facile method is developed to synthesize porous Ni-rich materials, which exhibit high capacity and stability as cathode materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Binghao Zhang, He Zhu, Yang Ren, Hekang Zhu, Weitong Lin, Ji-Jung Kai, Tianyi Li, Leighanne C. Gallington, Jincan Ren, Yalan Huang, Si Lan, Xiaopeng Tang, Qi Liu
Summary: The lifespan of lithium-ion batteries is influenced by unpredictable and complicated operation conditions. This study shows that the pause during charging-discharging process can cause significant capacity drop and reactivates harmful phase transition, leading to performance degradation. The discontinuous usage of rechargeable batteries is identified as a key factor for cycle life.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Yuhai Qu, Xiaoming Sun, Wanyuan Gui, Runguang Li, Zhihua Nie, Zhiyong Gao, Wei Cai, Yang Ren, Yandong Wang, Daoyong Cong
Summary: Magnetic-field-induced first-order magnetostructural transition (MFI-FOMST) has various magnetoresponsive effects, but practical applications have been limited by the high critical field. In this study, we achieved complete and reversible MFI-FOMST under a low field of 1.5 T in a prototype shape memory alloy. This was made possible by enlarging the distance between Curie transition and magnetostructural transition and manipulating the geometric compatibility between phases. The low critical field provides opportunities for low-field-induced large reversible magnetoresponsive effects and practical applications of MSMAs.
Article
Chemistry, Physical
Matilde Saura-Muzquiz, Frederick P. Marlton, Bryce G. Mullens, Jiatu Liu, Thomas Vogt, Helen E. Maynard-Casely, Maxim Avdeev, Douglas A. Blom, Brendan J. Kennedy
Summary: This article examines the Bi3FeMo2O12 system as a rare example of a transition-metal oxide that undergoes a symmetry lowering and a 2:1 ordering of the transition-metal cations upon heating. The structural phase transition between the tetragonal and monoclinic polymorphs was investigated using a combination of X-ray and neutron diffraction data. The results show that the phase transition is first order in nature and occurs at low temperatures. The role of Bi3+ 6s lone pairs in the phase transition and the magnetic behavior of the system were also studied.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shitong Wang, Lijiang Zhao, Yanhao Dong, He Zhu, Yang Yang, Haowei Xu, Baoming Wang, Yakun Yuan, Yang Ren, Xiaojing Huang, Wei Quan, Yutong Li, Yimeng Huang, Charles M. Settens, Qi He, Yongwen Sun, Hua Wang, Zunqiu Xiao, Wenjun Liu, Xianghui Xiao, Riqiang Fu, Qiang Li, Yong S. Chu, Zhongtai Zhang, Qi Liu, Andrew M. Minor, Junying Zhang, Zilong Tang, Ju Li
Summary: Wadsley-Roth oxides (WROs) with pore diameters of 2.5 angstrom < d < 2.8 angstrom allow rapid diffusion of Li+ in single-crystal particles, enabling high-rate charge cycles similar to gasoline vehicles and improving the cycle life up to 10,000 cycles.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Physical
Erick A. Lawrence, Matthew A. Davenport, Reshma Devi, Zijian Cai, Maxim Avdeev, Jonathan R. Belnap, Jue Liu, Husain Alnaser, Alice Ho, Taylor D. Sparks, Gopalakrishnan Sai Gautam, Jared M. Allred, Huiwen Ji
Summary: Fast charging in Li-ion batteries is a safety challenge due to Li-dendrite growth on graphite anodes. The search for high-rate anodes has led to the discovery of V7Nb6O29, a new V-rich Wadsley-Roth phase that exhibits excellent rate capability and cycling stability. The material's capacity retention and low average voltage make it attractive for fast charging applications.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Alex J. Brown, Maxim Avdeev, Alicia Manjon-Sanz, Helen E. A. Brand, Chris D. Ling
Summary: Oxygen-deficient perovskite compounds with the formula Ba3RFe2O7.5 were studied to investigate magnetic interactions between Fe3+ 3d cations with and without unpaired 4f electrons on R3+ cations. The magnetic ground states were determined for R3+ = Y3+ (non-magnetic) and Dy3+ (4f9) using neutron powder diffraction data analysis and ab initio density functional theory calculations. Both compounds exhibited complex long-range ordered antiferromagnetic structures with the same magnetic space group Ca2/c (BNS #15.91) below TN = 6.6 and 14.5 K, respectively. The influence of f-electron magnetism was evident in temperature dependence and differences in ordered moment sizes on the Fe sites.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
T. Hoelderle, M. Monchak, V Baran, O. Dolotko, S. Bette, D. Mikhailova, A. Voss, M. Avdeev, H. Ehrenberg, P. Mueller-Buschbaum, A. Senyshyn
Summary: A series of NCA battery cathodes with varying degrees of delithiation are obtained from 18650-type Li-ion batteries, and their structures are studied using high-resolution neutron powder diffraction. The NCA lattice parameters are accurately determined and compared for ex situ and operando data collection modes. The analysis of lithium occupancies and interatomic distances in the NCA cathode reveals a shrinking material response during delithiation, while the quantification of Li/Ni cation mixing shows SOC independent behavior. The anisotropic broadening of Bragg reflections in real-life NCA cathodes is attributed to the non-uniform distribution of Li, resulting in an unstable and unpredictable performance of LIBs.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Inorganic & Nuclear
Erick A. Lawrence, Xudong Huai, Dongwook Kim, Maxim Avdeev, Yu Chen, Grigorii Skorupskii, Akira Miura, Austin Ferrenti, Moritz Waibel, Shogo Kawaguchi, Nicholas Ng, Bobby Kaman, Zijian Cai, Leslie Schoop, Satya Kushwaha, Feng Liu, Thao T. Tran, Huiwen Ji
Summary: Transition-metal dichalcogenides (TMDs) have diverse properties and high degree of tunability, making them attractive for research. Interest in magnetically intercalated TMDs has increased, especially for compositions with the absence of inversion symmetry. In this study, the magnetic ground state of Fe1/4NbS2 was determined to be an A-type antiferromagnet, and the magnetic properties were found to be sensitive to the Fe site order.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Medicinal
Bing He, Zhuming Gong, Maxim Avdeev, Siqi Shi
Summary: The FAIR Data Principles are essential to accelerate data-driven materials science by ensuring the findability, accessibility, interoperability, and reusability of digital resources. This study introduces a FAIRification Framework for Materials Data with a flexible semi-structured parser and API, which allows for the extraction and transformation of various text formats without coding. The framework also provides a standardized API with efficient query syntax for seamless data sharing. The work demonstrates the potential utility of the framework in efficiently utilizing and reusing materials data, with implications for future data FAIRification of textual data.
JOURNAL OF CHEMICAL INFORMATION AND MODELING
(2023)
Article
Materials Science, Multidisciplinary
Shengbiao Zhang, Peijun Hou, Jiyun Kang, Tianyi Li, Shahryar Mooraj, Yang Ren, Catherine H. Chen, A. John Hart, Simos Gerasimidis, Wen Chen
Summary: As transportation infrastructure ages, repairing damaged structures like steel bridges becomes increasingly important. This study developed a laser-based additive manufacturing method for repairing corroded beams in steel bridges. The promising potential of employing additive manufacturing for structural repair was shown, along with fundamental insights into the relationships between processing, structure, and properties in laser additive manufacturing-repaired materials.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Yanming Sun, Yili Cao, Shixin Hu, Maxim Avdeev, Chin-Wei Wang, Sergii Khmelevskyi, Yang Ren, Saul H. Lapidus, Xin Chen, Qiang Li, Jinxia Deng, Jun Miao, Kun Lin, Xiaojun Kuang, Xianran Xing
Summary: By high-temperature synthesis, researchers have achieved tunable thermal expansion in the kagome cubic (Fd-3m) intermetallic (Zr,Nb)Fe-2 materials. By magnetic doping, they have obtained a near-zero thermal expansion coefficient, which has significant applications in advanced technologies.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Zien Cheng, Jinmei Huang, GuangXiang Lu, Yuhan Wu, Maxim Avdeev, Tao Yang, Pengfei Jiang
Summary: In this study, a new Mg4InSbO8 spinel material with a doubly ordered 2:1 cationic structure was designed and characterized. Mg4InSbO8 exhibited indirect semiconductor properties and suitable emission sites for green and deep-red emissions. It also showed distinct thermal quenching responses, making it potentially useful for temperature sensing applications.
CHEMISTRY OF MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jiacheng Ge, Yao Gu, Zhongzheng Yao, Sinan Liu, Huiqiang Ying, Chenyu Lu, Zhenduo Wu, Yang Ren, Jun-ichi Suzuki, Zhenhua Xie, Yubin Ke, Jianrong Zeng, He Zhu, Song Tang, Xun-Li Wang, Si Lan
Summary: Fe-based metallic glasses are promising materials in the fields of advanced magnetism and sensors. This study proposes a novel approach to tailor the amorphous structure through liquid-liquid phase transition, and provides insights into the correlation between structural disorder and magnetic order. The results show that the liquid-liquid phase transition can induce more locally ordered nanodomains, leading to stronger exchange interactions and increased saturation magnetization. The increased local heterogeneity also enhances magnetic anisotropy, resulting in a better stress-impedance effect.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
