Article
Chemistry, Physical
Changting Chu, Limin Chang, Dongming Yin, Dongyu Zhang, Yong Cheng, Limin Wang
Summary: The study focuses on preparing nickel-cobalt-manganese composite oxide with a higher lithium storage capacity and excellent stability through simple coprecipitation and high-temperature annealing methods. This material shows promising potential as an anode material in high-energy-density lithium-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Shasha Qu, Wenbin Wu, Yunfan Wu, Yanping Zhuang, Jie Lin, Laisen Wang, Qiulong Wei, Qingshui Xie, Dong-Liang Peng
Summary: In this study, LiF thin film was sputtered on LCO electrodes to enhance electrochemical performance and reduce voltage polarization. The various polarization components were quantified, and the improved properties of LiF-coated LCO were confirmed through electrochemical tests and in-situ XRD experiments. This work provides a reference for quantifying polarization components and suggests the potential use of LiF film coating in developing similar cathode materials.
Article
Chemistry, Physical
Jay Singh, Seulgi Lee, Priya Yadav, Sungjin Kim, Jaekook Kim, Alok Kumar Rai
Summary: In this study, a hydrothermal synthesis method was used to produce a mulberry-like mesoporous CoMoO4 anode material with improved electrochemical properties for lithium ion and sodium ion batteries. The unique morphology of the CoMoO4 material led to high reversible discharge capacity and long cycle stability, making it a promising alternative high-performance anode material for sodium ion battery applications.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Zhihao Gao, Rongyan Wen, Hua Deng, Lin Luo, Xiaochen Cui, Zhen Yang, Zongmin Zheng, Jianmin Zhang
Summary: In this study, the possibility of utilizing 2D nickel hydroxide nanosheets (NHNs) to prepare composite membranes was explored. The effect of NHNs on the properties of the membranes was investigated, and it was found that a low filler content led to improved thermal stability, crystallization behaviors, electrolyte affinity, and ionic conductivity. The composite membrane also demonstrated good cycling performance and rate capability in Li/LiFePO4 half-cells.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Engineering, Multidisciplinary
ShouJie Guan, QingLu Fan, LiYing Liu, JunCai Luo, YiCheng Zhong, WeiMin Zhao, ZhenCai Huang, ZhiCong Shi
Summary: A three-dimensional hierarchical Ca3Co4O9 hollow fiber network with excellent cyclic stability and rate performance was successfully prepared in this study, outperforming commercial Co3O4. The unique structure provides shorter ion transport distances and higher electrical conductivity, contributing to the enhanced electrochemical performance of transition metal oxides for lithium ion batteries.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2021)
Article
Engineering, Chemical
Ganesan Savithiri, Venkatachalam Priyanka, Rengapillai Subadevi, Bijoy Kumar Das, Marimuthu Sivakumar
Summary: In this study, a novel cathode material was synthesized via ball-milling, utilizing sodium cobalt phosphate and two different carbon structures, graphite and graphene, for Sodium-ion battery. The composite alpha-NaCoPO4/graphene showed higher initial discharge capacity compared to alpha-NaCoPO4/graphite, indicating its potential as a promising cathode for sodium-ion battery applications.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Chemistry, Physical
Aolin Hou, Shiguo Xu, Kaihua Xu, Minglong Zhang, De Zhao
Summary: The study found that W doping can slightly improve the reversible specific capacity but is not conducive to cyclic stability, while Zr doping can significantly enhance cyclic stability and high rate capability despite a slight reduction in specific capacity. Cyclic voltammetry results suggest that the improvements are due to mitigated electrode polarization and enhanced Li+ kinetics, while direct current resistance analyses confirm that Zr doping effectively inhibits an increase in DCR, benefiting rate capability and cycle stability.
Article
Chemistry, Physical
Yabin Shen, Hongjin Xue, Shaohua Wang, Zhaomin Wang, Dongyu Zhang, Dongming Yin, Limin Wang, Yong Cheng
Summary: A competitive high-nickel low cobalt lithium layered oxide cathode material NCM60535 is successfully prepared by studying the two key synthesis conditions, showing excellent electrochemical properties. A new type of electrolyte greatly improves the material's performance under high voltage, making NCM60535 a potential substitute in lithium battery manufacturing.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
Ruslan M. Zakalyukin, Ekaterina A. Levkevich, Andrey S. Kumskov
Summary: The study investigates a nanocomposite material filled in the channels of single walled carbon nanotubes, and explores its various ordered and disordered nanostructures. The electrochemical performance of this nanocomposite is also examined.
CERAMICS INTERNATIONAL
(2022)
Review
Energy & Fuels
Susmi Anna Thomas, Mohan Reddy Pallavolu, Mohammad Ehtisham Khan, Jayesh Cherusseri
Summary: Two-dimensional graphitic carbon nitride (g-C3N4) is similar to graphene and has attracted great interest in electrochemical energy storage. It has unique features such as nitrogen-rich environment, abundant resources, good electronic conductivity, excellent physicochemical stability, fascinating electrochemical stability, and environmental friendliness, making it a promising electrode candidate for high-performance rechargeable batteries. The 2D g-C3N4 electrodes exhibit excellent electrochemical performance in terms of high capacity, high energy density, and long cycle life, which are beneficial for metal-ion batteries. In addition, the large surface area, porous architecture, and thin-layer structural features of these materials are favorable for high performance in metal air batteries.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Ruirui Gao, Suqin Wang, Zhaoxiu Xu, Hongbo Li, Shuiliang Chen, Haoqing Hou, Jiulin Wang
Summary: The Fe3O4/FeS composite, synthesized by a hydrothermal method, effectively alleviates volume expansion in lithium-ion batteries and forms a high-quality solid-electrolyte interface film, demonstrating superior cycling performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Materials Science, Multidisciplinary
Jing-Chao Zhang, Zhe-Dong Liu, Cui-Hua Zeng, Jia-Wei Luo, Yi-Da Deng, Xiao-Ya Cui, Ya-Nan Chen
Summary: Lithium cobalt oxide, as the earliest commercial cathode material for lithium-ion batteries, has various advantages. Increasing its charging cutoff voltage while maintaining a stable crystal structure is a current hot research issue in the further application of LiCoO2.
Article
Engineering, Environmental
Weifeng Wu, Guohua Ye, Guoqing Zhang, Xiaoqing Yang
Summary: This study successfully prepared a flexible composite phase change material with well-retained flexibility in a wide temperature range by carefully selecting a specific copolyester thermoplastic elastomer. The material demonstrated outstanding applicability and cooling performance in various battery cells and modules, significantly lowering the maximum temperature and improving thermal management efficiency.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yang Liu, Cai Qi, Dandan Cai, Xiao Tang, Ying Li, Wenxian Li, Qinsi Shao, Jiujun Zhang
Summary: The development of electrode materials with high capacity and rate capability is necessary for improving the energy density and cycle life of lithium-ion batteries (LIBs). In this study, a cathode material, LiFePO4/C, modified with high electrical conductivity compound tantalum carbide (TaC), was successfully synthesized via hydrothermal method. The co-coating of nano-sized TaC and amorphous carbon layer on the surface of LiFePO4 particles allows for efficient electron and Li ion transfer, resulting in improved electrochemical kinetics. As a cathode material for LIBs, this composite demonstrates excellent electrochemical performances with high reversible capacity (159.0 mAh g(-1), 0.1C) and improved rate capacity. This methodology provides a new prospect for the application of transition metal carbides (TMCs) in modifying battery electrode materials.
Article
Chemistry, Physical
Liguo Zhang, Litao Yu, Oi Lun Li, Si-Young Choi, Minwoo Kim, Ghuzanfar Saeed, Shufeng Bo, Kwang Ho Kim
Summary: A FeF3.0.33H(2)O@carbon nanocomposite with a pomegranate-like structure has been successfully synthesized, which exhibits excellent performance as a cathode material in both lithium-ion and sodium-ion batteries. The unique hierarchical carbon-coated architecture of the nanocomposite effectively reduces electrode polarization and enables high reversibility and rate performance.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Qingwang Min, Penghua Miao, Jinghan Liu, Jianjun Ma, Meijuan Qi, Farzaneh Shamsa
Summary: A simple and facile approach was conducted to prepare a series of new SBA-15 supported dendritic imidazolium ILs heterogeneous catalysts with high ionic density. Among these catalysts, SBA-15/IL(3) showed the highest catalytic activity for solvent-free synthesis of 2-imidazolidinone from ethylenediamine and carbon dioxide, with a positive dendritic influence on reaction yields due to the high-density peripheral zwitterionic ionic liquid functional groups on the biobased catalyst surfaces.
Article
Engineering, Aerospace
Chi Peng, Jianjun Ma, Xiaoma Liu
Summary: In this article, an online robust actor-critic-disturbance guidance law is developed for a missile-target interception system with limited normal acceleration capability. The key is to seek the saddle point solution of the Hamilton Jacobi Isaacs (HJI) equation and construct critic NN, actor NN, and disturbance NN based on Neural Networks (NNs). The proposed scheme is proved to be Uniformly Ultimately Bounded (UUB) stable by Lyapunov method and its effectiveness and robustness are illustrated through numerical simulations.
CHINESE JOURNAL OF AERONAUTICS
(2022)
Article
Geochemistry & Geophysics
Xiangzhu Meng, Peian Li, Yuning Hu, Fei Song, Jianjun Ma
Summary: Recognition of road surface conditions using low-THz frequencies is important for transportation safety and efficiency. The theoretical model developed in this study combines IEM, RTE, and Rayleigh scattering theory, showing good agreement between calculation results and measured data. The influence of carrier frequency, ambient temperature, impurities in the ice layer, and frozen soil surface conditions on the method's efficiency is discussed.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Engineering, Chemical
Jinlei Zeng, Yue Yang, Yibo Tang, Xu Xu, Xu Chen, Ganlu Li, Kequan Chen, Hui Li, Pingkai Ouyang, Weimin Tan, Jianjun Ma, Yaozong Liu, Ruiyuan Liang
Summary: The study shows that the new green biobased PDI trimer curing agent has lower carbon emissions and similar performance compared to petrochemical-based HDI trimer curing agents. By optimizing the synthesis, modification, and removal of free PDI monomers, self-made and allophanate-modified PDI isocyanurate trimers exhibit excellent physical and chemical properties, with water resistance, acid and alkali resistance, and aging resistance comparable to or even better than petrochemical-based HDI products.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Endocrinology & Metabolism
Zhiwei Liu, Tao Wu, Shanjin Ma, Wei Xue, Xiaoye Jiang, Qisheng Tang, Jianjun Ma
Summary: This study aimed to evaluate the accuracy of two modes of Rigiscan in predicting tadalafil response and identify the most efficient Rigiscan variables in making these predictions. The results showed that NPTR had a higher area under the curve (AUC) than AVSS in predicting tadalafil responders, while AVSS had a higher AUC than NPTR in predicting cured patients.
FRONTIERS IN ENDOCRINOLOGY
(2022)
Editorial Material
Physics, Multidisciplinary
Jianjun Ma, Yuping Yang, Bin Li, Hichem Guerboukha
FRONTIERS IN PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Jianjun Ma, Miao Zhu, Yunwei Li, Xu Cai
Summary: This article proposes the concept of monopolar fault reconfiguration for bipolar dc distribution system and presents the design and evaluation of a Bipolar Half Bridge (BiHB) converter. The proposed converter achieves mode switching by reconfiguring the switching pattern, and a bipolar modulation method is used for control design considering both monopolar and bipolar working mode. The key factor influencing transient voltage spikes, including fault detection delay and modulation method, is identified, and feed-forward compensation is adopted to suppress voltage spikes caused by monopolar fault. The proposed concept and strategy have been validated through fault protection and restoration tests, ensuring uninterrupted power supply.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Yang Chen, Han Wang, Miao Zhu, Jianjun Ma, Xiangping Kong
Summary: This paper introduces an improved multi-port modular multilevel converter for the interconnection of low frequency AC transmission system. Through the analysis of topology and working principle, a partitioned nearest level modulation method is proposed for high-voltage applications, and a mathematical model and decoupling control strategy are presented. To solve the output performance issues for hybrid HVAC and LFAC scenarios, an output current distortion suppression strategy and a circulating current control strategy are proposed.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2022)
Article
Optics
Xiang Gao, Huanxin LI, Ting Zhang, Jia Du, Ken Smart, Jianjun Ma, Jianping An
Summary: This paper presents a 600 GHz high-temperature superconducting sub-harmonic mixer with a double-Y-type slot antenna and a cascaded filter network. The experimental results show that the mixer achieves the best performance among similar frequency and operating temperature conditions.
Article
Engineering, Aerospace
Chi Peng, Hanwen Zhang, Yongxiang He, Jianjun Ma
Summary: This article proposes a state-following-kernel-based reinforcement learning method for a missile-target interception system. By estimating the target maneuver, the critic and actor neural networks are constructed using state-following kernels to calculate the approximate optimal guidance policy. Numerical simulations highlight the importance of state-following kernels in value function and policy approximation.
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
(2022)
Article
Engineering, Electrical & Electronic
Peian Li, Jianchen Wang, Liangbin Zhao, Xiang Gao, Fei Song, Houjun Sun, Jianjun Ma
Summary: Wireless communication at terahertz frequencies is considered as a potential for future 6G wireless systems. However, secure data transmission in these systems faces complex challenges, including the less explored threat of scattering-induced eavesdropping. In this study, we investigate the security implications of scattering in non-line-of-sight (NLOS) links using metallic wavy surfaces and demonstrate real-time data transmission with a high data rate. We find that signal interception from an NLOS link can occur even with transceiver designs incorporating backscatter measures, posing a common security threat for THz communication systems with NLOS channels.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Peian Li, Jiancheng Wang, Liangbin Zhao, Jianjun Ma, Houjun Sun, Lothar Moeller, John F. Federici
Summary: The increasing capacity demand in wireless connectivity can be met by terahertz communications in the 100 GHz to 10 THz band. However, the performance of terahertz channels in outdoor adverse weather conditions is not well-studied. In this article, the performance of terahertz channels in emulated rain is reported, showing that raindrop size distribution uncertainty is a major factor affecting power attenuation and bit error rate.
NANO COMMUNICATION NETWORKS
(2023)
Article
Energy & Fuels
Yang Chen, Jinggang Yang, Yang Xu, Chuanchuan Hou, Ke Zhao, Jianjun Ma, Miao Zhu
Summary: AC & DC hybrid power grid is an important trend in renewable energy systems, and the power electronic transformer plays a crucial role in the conversion and transmission of renewable energy. Existing topologies have drawbacks such as large volume and complex control. The TP-MMC, with a compact structure and multiple AC and DC ports, provides a solution for the interconnection of AC and DC power grids. The proposed voltage source control strategy in this paper enhances the inertial and self-synchronous ability of the AC port in TP=MMC, allowing flexible control of active and reactive power.
Article
Chemistry, Multidisciplinary
Menghan Wei, Peian Li, Yuanshuai Lei, Xiue Bao, Jianjun Ma
Summary: This article investigates the potential of millimeter-wave (MMW) and sub-terahertz (sub-THz) frequency bands in mobile communication technology, focusing on the biothermal heating effect of human skin under high-power illumination. The research shows that these frequency bands are non-ionizing and safe for humans at low illumination powers. However, the concern remains on biothermal heating at high power. An analysis is conducted in outdoor environments considering atmospheric conditions, using a theoretical model combining Pennes' bioheat transfer equation, the ITU model, and the Mie scattering theory. The influence of factors such as rainfall rate, humidity, operating frequency, illumination time, power density, and propagation distance is discussed.
APPLIED SCIENCES-BASEL
(2023)
Proceedings Paper
Engineering, Industrial
Zhaoxin Du, Jianjun Ma, Kehuan Wang, Ning Gao, Miao Zhu
Summary: This paper proposes a topology of fault current limiting partial power converter to solve the DC short-circuit fault problem of the dc-dc converter.
2022 IEEE 17TH CONFERENCE ON INDUSTRIAL ELECTRONICS AND APPLICATIONS (ICIEA)
(2022)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.
