Article
Electrochemistry
Igor Traskunov, Arnulf Latz
Summary: Porous media with complex microstructures are commonly used in electrodes for lithium-ion batteries and other chemical systems, with recent simulation results suggesting the presence of spatially localized fluctuations that cannot be observed in traditional models. A new mathematical framework utilizing perturbation theory can accurately describe these fluctuations and their effects on battery processes.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Anran Liu, Suhua Yu, Xiaojun Lu, Songqin Liu
Summary: Through hydrothermal assembly and high-temperature carbonization, we designed a novel NiCo2O4@nitrogendoped carbon nanotube@3D graphene (NCO@CT@3DG) aerogel to overcome the issues of large volume expansion and poor electrical conductivity in redox-based electrode materials. The NCO@CT@3DG aerogel exhibited excellent electrochemical properties as an anode material for lithium-ion batteries, with high capacity, superior cycle and rate performance. The outstanding properties are attributed to the synergistic effect of each component and the unique graphene aerogel hybrid structure. This study demonstrates the great potential of 3DG aerogel hybrid structure in improving electrochemical properties of active materials with high volume expansion and poor conductivity.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Haonan Wang, Jianfu Chen, Pengtao Wang, Ce Liang, Kaifeng Yu
Summary: In this study, a porous graphene-like biomass carbon material anode with excellent electrochemical performance was prepared for both Li-ion and Na-ion batteries. Its pseudocapacitance mechanism facilitates the diffusion of ions, and it exhibits stable cycling performance and high-rate capability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Wei Zhong, Siwu Li, Mengchuang Liu, Ziqi Zeng, Shijie Cheng, Jia Xie
Summary: The self-sacrificing Li2C2O4 is a promising lithium replenisher with high specific capacity, residue-free and low-cost properties. However, its low electrochemical activity poses a challenge for the compatibility of electrolyte and cathode materials. In this study, a three-dimensional hierarchical spherical Mo2C/N-doped graphene co-catalyst is synthesized to enhance the reactivity of Li2C2O4 and accelerate the electron-ion transport.
Article
Chemistry, Physical
Huaiyang Chen, Xiaoping Shen, Zhenyuan Ji, Jia Cheng, Guangxiang Liu, Leiming Lang, Yao Chen
Summary: In this paper, porous Mn3O4-Fe3O4 nanoparticles are anchored on reduced graphene oxide (rGO) nanosheets to form Mn3O4-Fe3O4/rGO composites. The composites exhibit superior electrochemical lithium storage performances, including high reversible capacity, good rate capability, and strong long-term cycle stability. The study demonstrates that graphene not only provides conductivity, but also mitigates volume expansion and prevents nanoparticle aggregation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Yanli Tan, Qun Li, Zhou Lu, Chunxiao Yang, Weiwei Qian, Fangyong Yu
Summary: Biomass materials have been gaining attention in functional composites due to their unique microstructure, renewability, and electrochemical performance. Porous NiO/C composites, synthesized using cellulose-rich natural cotton, exhibited a high specific capacity as a lithium-ion battery anode. The interconnected nanostructure of NiO/C composites with carbon matrix enhances electrolyte diffusion and provides additional routes for ion diffusion, leading to excellent lithium storage performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Yun Sheng, Yishan Wang, Bo Lan, Xueqian Zhang, Chuncheng Wei, Guangwu Wen
Summary: In this study, Co3O4/graphene (Co3O4/G) composites with a unique three-dimensional porous structure were prepared, which improved the electrical conductivity of Co3O4 while inhibiting its volume expansion. The Co3O4/G composite showed excellent electrochemical performance, providing a reliable reference for future research on large-scale preparation of high-performance lithium-ion batteries.
Article
Chemistry, Physical
Jinru Wu, Tao Yang, Yan Song, Xusheng Zhang, Xiaodong Tian, Zhanjun Liu
Summary: In this study, pitch-based materials with different microstructures were prepared using different green cokes with four optical textures as raw materials through low-temperature carbonization. The optical texture index (OTI) was introduced to illustrate the optical textures. The relationships between OTI, microstructure, and electrochemical performance were established. The results showed that orderly graphite sheets generated from the flow domain structure (higher OTI) contributed to a higher reversible specific capacity, while structural defects formed by disordered mosaic structures (lower OTI) enhanced the random transportation and diffusion of lithium ions, resulting in optimal rate performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Jiuqing Liu, Fanli Zeng, Zikun Hong, Junying He, Qihou Li, Feifei Song, Lishun Bai, Chen Cheng, Zehao Chen, Liandong Tang, Chen Duan, Zhirong Chen
Summary: By using a simple non-solvent phase separation (NIPS) method, porous composite films were obtained as free-standing interlayers for lithium-sulfur batteries (LSBs), which can not only provide hierarchical channels for improving lithium-ion transfer number, but also have excellent physicochemical stability and strong adsorption capability towards lithium polysulfide (LiPS). Compared with the pristine one, the representative lithium-sulfur battery with graphene/polyetherimide/ZrO2 interlayer (GPZ) shows good initial cycle discharge specific capacity, better capacity retention after 200 cycles, and good rate performance. This work provides a facile and promising way to achieve functional interlayer with high stability for high performance lithium-sulfur batteries.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Electrochemistry
Igor Traskunov, Arnulf Latz
Summary: A body of research investigates how the microstructure of lithium-ion battery electrodes affects their performance. Fluctuations in overpotential and lithium ion concentration, not observed in simulation results based on the DFN model, were explained using analytical and numerical analysis. The study proves that these fluctuations persist and are relevant to real lithium-ion cells, providing insights for more accurate mathematical models.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Xia Zeng, Jing Chen, Lin Ma, Chen Chen, Yuan Yuan, Lusheng Liao, Ziyun Peng, Liyi Zheng, Yilin Huang, Jie Peng, Guixun Yang, Yanjie Xi
Summary: A heterostructured composite of Cr2S3 nanosheets embedded into N-doped porous carbon skeleton (Cr2S3/NC) has been synthesized, which effectively addresses issues such as particle aggregation, volume expansion, and low conductivity. The composite exhibits superior Li-storage performance due to the confinement of Cr2S3 nanosheets by the conductive carbon matrix and the presence of a porous conductive carbon framework.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Caili Yang, Yixin Ran, Chenxi Gao, Zuyong Wang, Yuan-Li Ding
Summary: Li3VO4 is a promising intercalation anode material for lithium-ion batteries, but it has poor electronic conductivity. To address this issue, researchers developed a self-template strategy to construct 3D hierarchical Li3VO4/C hybrids, which show efficient electron/ion transport system.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Tahoura Kazemizadeh, Mehdi Pourabdoli
Summary: A porous silicon-carbon composite was synthesized using mechanical activation method, which promoted the decomposition reaction of raw materials and facilitated the formation of carbon structure. The electrical resistivity of the composite was reduced, indicating improved conductivity.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Ce Liang, Jianfu Chen, Kaifeng Yu, Wenming Jin
Summary: The novel ZnMn2O4 sphere/jute porous carbon composite material exhibits high cycling stability and excellent electrochemical performance as an anode material for lithium-ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Gaofu Liu, Ruixiao Zhang, Zhuwei Sheng, Mingyue Chen, Pengcheng Qi, Yu Lu, Xiaoyan Wu, Xuefeng Zou, Wenhui Li, Hao Wu, Yiwen Tang
Summary: Polyoxometalates (POM) have versatile properties, and here we report the synthesis of a novel 3D porous network of ultrathin V6O13-POM nanosheets on carbon cloth (V6O13-POM//CC) for energy storage. The use of phosphotungstic acid as an inorganic ligand assists in the formation and control of the morphology of V6O13-POM composites, increasing the specific surface area and active sites. The V6O13-POM//CC anode material demonstrates high reversible capacity and stability in lithium-ion batteries, showing potential for commercial applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
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.