Article
Nanoscience & Nanotechnology
Dafang He, Mufan Sun, Da Cao, Yujie Ding, Haiqun Chen, Guangyu He
Summary: By integrating TMOs with RGO in a self-supporting film, the capacity, rate performance, and cycling performance of lithium-ion batteries can be effectively improved.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
So Yeun Kim, Chang Hyo Kim, Cheol-Min Yang
Summary: Si-based composites wrapped in multiple graphene shells were successfully fabricated as binder-free anodes for Li-ion batteries, exhibiting high initial discharge capacity, excellent cyclic stability, and superior rate capability. The multilayered structure contributed to the enhanced performance of the LIBs and could potentially advance the development of high-performance LIBs for electric vehicles.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Multidisciplinary
Leichao Meng, Jianhong Peng, Yi Zhang, Yongfu Cui, Lingyun An, Peng Chen, Fan Zhang
Summary: In this paper, different methods were employed to prepare lithium vanadium oxide (LVO) samples. It was found that the LVO samples obtained by sol-gel method had uniform nanoparticle morphology. The LVO/graphene (GN) composite synthesized by sol-gel method showed outstanding cycling performance and rate performance, attributed to the improved distribution of LVO by flexible GN and the formation of a highly conductive network.
Article
Chemistry, Multidisciplinary
Ruoxin Yuan, Hao Wen, Li Zeng, Xi Li, Xingang Liu, Chuhong Zhang
Summary: The study demonstrates the preparation of cobalt monoxide/graphene nanocomposites using supercritical CO2 assisted solvothermal method, which promotes the crystallization of nanoparticles and the formation of stable chemical bonds on the graphene nanosheets. These improvements contribute to enhance the cycle stability and rate capability of the material when used as an anode in lithium-ion batteries.
Article
Electrochemistry
Madhusoodhanan Lathika Divya, Subramanian Natarajan, Vanchiappan Aravindan
Summary: This study presents different recycling techniques for graphite from spent lithium-ion batteries (LIBs) and discusses their reuse in various applications. It aims to assist researchers and industries in efficiently utilizing graphite as a valuable source for high-capacity production of graphene and addressing the increasing volume of spent LIBs.
BATTERIES & SUPERCAPS
(2022)
Review
Chemistry, Multidisciplinary
Miaomiao Jiang, Yuanyuan Ma, Junliang Chen, Wan Jiang, Jianping Yang
Summary: The exploration of electrode materials has a crucial impact on the development of lithium-ion batteries, with challenges in conductivity and volume change hindering commercial application. Carbon-matrix composite anodes have been identified as an effective strategy, with recent advances focusing on regulating carbon distribution. This review provides insights into future trends in carbon-matrix electrode design for LIBs.
Article
Chemistry, Physical
Qinxing Xie, Shipeng Qu, Yufeng Zhang, Peng Zhao
Summary: Nitrogen-enriched graphene-like carbon nanosheets were synthesized using coffee ground as carbon and nitrogen source, calcium carbonate and iron nitrate as structural templates and catalysts, resulting in porous carbon materials with moderate specific surface area and tuneable pore sizes. As lithium ion battery anodes, the carbon materials exhibit enhanced energy storage capability and cycling stability, making them a promising candidate for next-generation high performance lithium-ion batteries.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Wenlu Min, Xianghong Chen, Shuhan Huang, Yunlong Liao, Zhiyong Liang, Yu Lei, Jiantie Xu
Summary: The synthesis of reduced holey graphene oxides with different structures is important for the development of advanced lithium ion batteries. The rhG-400 as cathode for LIBs delivers high reversible capacity, excellent rate capability, and maintains an ultra-long cycling life.
Article
Energy & Fuels
Zhenwei Li, Meisheng Han, Peilun Yu, Quan Wu, Yuanbo Zhang, Jie Yu
Summary: Si/C anode with homogeneously deposited Si-C nanolayers on graphite armored with N-doped porous flexible vertical graphene sheets (VGSs) exhibits improved cycling stability and fast-charging capability. Si-C nanolayers contain sub-nanometer Si particles in 3D carbon skeleton, effectively alleviating volume change of Si and accelerating electron and Li-ion transport. N-doped VGSs provide rational space for Si volume change, buffer stress, increase electrical contact points, and accelerate Li-ion transport.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Xiao-Nan Lv, Peng-Fei Wang, Yu-Hang Zhang, Qi Shi, Fa-Nian Shi
Summary: In this study, three-phase composite nanospheres with different phase ratios were prepared and their electrochemical properties were investigated. The results showed that the composites with optimal ratios exhibited excellent capacity and stability, which have positive significance for the design of future energy storage materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
S. Y. Zhu, Y. F. Yuan, P. F. Du, M. Zhu, Y. B. Chen, S. Y. Guo
Summary: This study focuses on improving the lithium storage performance of MnS by addressing its low conductivity and volume variation issues through a novel synthesis strategy and composite structure. The composite material consists of alpha-MnS nanoparticles grown within a 3D macroporous honeycomb carbon framework. The composite demonstrates enhanced specific capacity, cycling durability, and rate capability, as well as excellent kinetics properties, thanks to the smart design of the confined alpha-MnS nanoparticles.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Xiaoqiang Li, Guangguang Guan, Kaiyin Zhang, Guojun Gao, Jun Xiang
Summary: We designed a flexible self-supporting nanofiber membrane with highly dispersed CoFe2O4 nanoparticles embedded in one-dimensional N-doped carbon nanofibers. The membrane has a unique hierarchical structure that enhances the durability of wearable electronic devices and improves the electrical conductivity and ion diffusion pathways in the electrode.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Jing Mei, Jinlu Han, Fujun Wu, Qichang Pan, Fenghua Zheng, Juantao Jiang, Youguo Huang, Hongqiang Wang, Kui Liu, Qingyu Li
Summary: In this study, a simple and effective method for the synthesis of SnS@C/G composites was reported, in which SnS@C nanoparticles were strongly coupled onto graphene oxide nanosheets through dopamine-derived carbon species. The designed architecture of SnS@C/G composites showed various advantages, including buffering the volume expansion of Sn, suppressing the coarsening of Sn, and dissolving Li2S during the cyclic lithiation/delithiation process. As a result, the SnS@C/G composite exhibited outstanding rate performance and excellent cycle stability as an anode material for lithium-ion batteries.
FRONTIERS IN CHEMISTRY
(2023)
Article
Chemistry, Physical
Wenshuai Lang, Chuang Yue, Man Dang, Gang Wang, Yimin Chen, Fang Hu, Zhiming Liu, Jie Shu
Summary: Three-dimensional graphene networks were successfully fabricated on nickel foam using chemical vapor deposition technique, followed by the deposition of amorphous Ge layer using radio frequency magnetron sputtering method. The Ge-decorated graphene networks exhibited improved electrochemical performance as anodes for lithium-ion batteries compared to directly coated two-dimensional Ge nanoelectrodes on bare Ni foam. The optimized 3D Ge@Gr hybrid electrode achieved significantly enhanced electrochemical cyclability for 1500 long-term cycles under higher current density of 1.2 mA cm-2. The interconnected 3D graphene with enlarged surface area effectively buffered the volume change of the Ge anode and improved electrical/ionic conductivity, resulting in superb stable cyclability.
JOURNAL OF POWER SOURCES
(2023)
Article
Thermodynamics
Elisa Thauer, Xiaoze Shi, Shuai Zhang, Xuecheng Chen, Lukas Deeg, Ruediger Klingeler, Karolina Wenelska, Ewa Mijowska
Summary: This study introduces a facile method for preparing graphene coated core-shell Mn3O4 nanoparticles encapsulated in hollow carbon spheres. The high temperature preparation of HCSs led to good electrical conductivity and the Mn3O4 filling exhibited characteristic ferrimagnetic ordering. Electrochemical studies showed that the encapsulated Mn3O4 nanoparticles had superior properties, providing new choices for electrode materials.
Article
Materials Science, Multidisciplinary
Dengcui Yang, Yanjun Yin, Xinfeng Kan, Yan Zhao, Zhengzhi Zhao, Jiquan Sun
Summary: This study investigates the grain growth mechanism and substructure of 316L stainless steel processed by selective laser melting (SLM). It reveals that the grain growth direction is related to the temperature gradient direction, and a finite element model is established to explain the formation of the substructure.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Optics
Xinfeng Kan, Yanjun Yin, Dengcui Yang, Wei Li, Jiquan Sun
Summary: Selective Laser Melting (SLM) is an important additive manufacturing method with complex processes involving heat transport, liquid metal flow, and solidification behavior. This study successfully simulated the SLM process using the finite volume method, confirming the time for the molten pool to reach a stable state.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Xinfeng Kan, Dengcui Yang, Zhengzhi Zhao, Jiquan Sun
Summary: This paper utilizes Fused Filament Fabrication (FFF) technology to create metal parts, achieving a relative density of 96% with optimized binder formula after sintering.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Materials Science, Multidisciplinary
Dengcui Yang, Yan Zhao, Xinfeng Kan, Xiaohong Chu, Hang Sun, Zhengzhi Zhao, Jiquan Sun, Haibing Wang
Summary: In this study, the microstructures, mechanical properties, and deformation behaviors of 316L stainless steel fabricated by selective laser melting (SLM) were investigated. It was found that SLM resulted in a high dislocation density, contributing to the enhancement of yield strength. Twinning occurred during the early stage of SLM deformation and underwent obvious grain rotation and twinning development during tensile tests. However, only a few transformed martensite was observed in the deformed samples, with no significant changes in grain orientation.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Thermodynamics
Zhiyong Li, Xiuli He, Shaoxia Li, Xinfeng Kan, Yanjun Yin, Gang Yu
Summary: A 3D model is developed to analyze the melt pool dynamics in laser powder bed fusion (L-PBF) of 316L powders, considering the effect of sulfur. It is found that surface tension is the most important driving force and sulfur introduces more complexity in the melt pool dynamics. Changes in sulfur content significantly affect the thermal behavior, driving force, and dynamic characteristics.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Materials Science, Multidisciplinary
Zhiyong Li, Xinfeng Kan, Yanjun Yin
Summary: This study investigates the influence of sulfur content on the transitions of thermo-capillarity and flow dynamics during laser powder bed fusion (LPBF) of 316L powders. The results show that high sulfur concentrations lead to finer microstructures and equiaxed grains. Additionally, with increasing sulfur content, a more homogenized velocity distribution and heightened flow complexity are observed.
MATERIALS RESEARCH EXPRESS
(2023)
Article
Engineering, Multidisciplinary
Xinfeng Kan, Dengcui Yang, Zhengzhi Zhao, Jiquan Sun
Summary: This study explores the use of WAAM technology to manufacture large metal components, focusing on adjusting parameters and utilizing pressure machining to improve stacking quality and microstructure uniformity, ultimately enhancing the comprehensive mechanical properties of the components.
ENGINEERING RESEARCH EXPRESS
(2021)
Article
Electrochemistry
Abdul Qayoom Mugheri, Shaista Khan, Ali Asghar Sangah, Aijaz Ahmed Bhutto, Muhammad Younis Laghari, Nadeem Ahmed Mugheri, Asif Ali Jamali, Arsalan Ahmed Mugheri, Nagji Sodho, Abdul Waheed Mastoi, Aftab Kandhro
Summary: Green hydrogen has the potential to transition to a pollution-free energy infrastructure. This study proposes a solution to produce hydrogen during the photoelectrochemical process, offering greater stability and control over chemical reactions. Techno-economic assessments show the efficiency and economic feasibility of co-producing value-added chemicals to enhance green hydrogen production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Danpeng Cheng, Wuxin Sha, Qigao Han, Shun Tang, Jun Zhong, Jinqiao Du, Jie Tian, Yuan-Cheng Cao
Summary: LiNixCoyMn1-x-yO2 (NCM) is a critical cathode material for lithium-ion batteries in electric vehicles. The aging of cathode/electrolyte interfaces leads to capacity degradation and long-term cycle instability. A novel neural network model called ACGNet is developed to predict electrochemical stability windows of crystals, allowing for high-throughput screening of coating materials. LiPO3 is identified as a promising coating material with high oxidation voltage and low cost, which significantly improves the cycle stability of NCM batteries. This study demonstrates the accuracy and potential of machine learning in battery materials.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
P. Mohana, R. Yuvakkumar, G. Ravi, S. Arunmetha
Summary: This study successfully fabricates a non-noble CuO/NiO/rGO nanocomposite and investigates its electrocatalytic performance for oxygen evolution reaction in alkaline environment. The experimental results demonstrate that the electrocatalyst exhibits high activity and good stability, offering a new synthetic approach for sustainable energy production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Qiong Qu, Jing Guo, Hongyu Wang, Kai Zhang, Jingde Li
Summary: In this study, a bifunctional electrode host design consisting of carbon nanofibers implanted ordered porous Co-decorated Al2O3 supported on carbon nanotube film (CNTF) was proposed to address the shuttling effect of lithium polysulfides (LiPSs) and dendrite formation of metal lithium anode in lithium-sulfur (Li-S) batteries. The electrode exhibited excellent conductivity, efficient confinement of LiPSs, and catalytic conversion performance, resulting in high initial capacity and good capacity retention during cycling. As an anode, the electrode showed excellent Li+ diffusion performance and uniform lithium growth behavior, achieving a dendrite-free lithium electrode. The flexible pack cell assembled from these electrodes delivered a specific capacity of 972 mAh g(-1) with good capacity retention.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Hong Zhang, Jin-Peng Yu, Chen Chen, Cheng-Yong Shu, Guang-Yu Xu, Jie Ren, Kai Cui, Wen-Fang Cai, Yun-Hai Wang, Kun Guo
Summary: Spray coating of acetylene black nanoparticles onto stainless steel mesh can enhance its biofilm formation ability and current density, making it a promising electrode material for microbial electrochemical systems. The spray coating method is simple, cost-effective, and suitable for large-size stainless steel electrodes.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Binpeng Hou, Jingjin Chen, Li-Hong Zhang, Xiaowen Shi, Zizhong Zhu
Summary: The electrochemical performance of Li1.20Mn0.44Ni0.32Co0.04O2 and its oxygen-deficient phase Li1.20Mn0.44Ni0.32Co0.04O1.83 was studied through first-principles calculations. The results show that the oxygen-deficient phase has a higher theoretical capacity but lower voltage platform and higher chemical activity compared to the pristine phase.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Yating Du, Sayoko Shironita, Daisuke Asakura, Eiji Hosono, Yoshitsugu Sone, Yugo Miseki, Eiichi Kobayashi, Minoru Umeda
Summary: This study investigates the effect of high- and low-temperature environments on the charge-discharge performance of a Li-ion battery. The deterioration mechanisms of the battery at different temperatures are analyzed through various characterization techniques. The results indicate that the battery performance deteriorates more significantly at a low-temperature environment of 5 degrees C compared to higher temperatures. The understanding of the deterioration mechanisms can contribute to the development of safer battery usage methods.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Si-Si Shi, Zhi-Xiang Yuan, Fei Zhang, Ping Chen
Summary: In this study, a new nano-electrocatalyst was prepared, which exhibited superior electrocatalytic activity for the reduction of NO2- to ammonia in a neutral electrolyte, potentially due to the synergistic enhancement between Co3O4-x and Co.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Berna Dalkiran, Havva Bekirog
Summary: This study reports the use of deep eutectic solvents (DES) based on ethylene glycol and urea as low-cost and green electrolytes for enhancing electrochemical detection of natural antioxidants. The study successfully developed a disposable and effective electrochemical sensing platform for simultaneous determination of ascorbic acid (AA) and gallic acid (GA) using NaOH nanorods on a pencil graphite electrode. The proposed electrode showed improved analytical performance, with higher peak currents and shifted oxidation potentials in DES compared to BR buffer medium.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Sijun Ren, Jianguo Huang
Summary: In this study, a novel bio-inspired nanofibrous WO3/carbon composite was synthesized using a facile hydrothermal method. The three-dimensional network structure of the composite alleviated the volume expansion of WO3 nanorods and enhanced the charge-transport kinetics. The optimized composite exhibited superior lithium storage properties.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Zhilong Zheng, Yu Chen, Hongxia Yin, Hengbo Xiao, Xiangji Zhou, Zhiwen Li, Ximin Li, Jin Chen, Songliu Yuan, Junjie Guo, Haibin Yu, Zhen Zhang, Lihua Qian
Summary: This study found that interstitial Zn cations in CoMoO4 can modulate the dissolution kinetics of Mo cations and improve the OER performance. The interstitial Zn cations can prevent the dissolution of Co cations at high potential, enhancing the durability of the catalyst.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Xiaobo Lin, Shern R. Tee, Debra J. Searles, Peter T. Cummings
Summary: Molecular dynamics simulations using the constant potential method were used to investigate the charging dynamics and charge storage of supercapacitors. The simulations revealed that the water-in-salt electrolyte exhibited the highest charge storage and significantly higher capacitance on the negative electrode. The varying contributions of different electrode regions to supercapacitor performance were also demonstrated.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Wiktoria Lipinska, Vita Saska, Katarzyna Siuzdak, Jakub Karczewski, Karol Zaleski, Emerson Coy, Anne de Poulpiquet, Ievgen Mazurenko, Elisabeth Lojou
Summary: The spatial distribution of enzymes on electrodes is important for bioelectrocatalysis. In this study, controlled spatial distribution of gold nanoparticles on Ti nanodimples was achieved. The efficiency of enzymatic O2 reduction was found to be influenced by the size of the gold nanoparticles and their colocalization with TiO2. The highest stability of enzymatic current was observed with the largest gold nanoparticles.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Tariq M. Al-Hejri, Zeenat A. Shaikh, Ahmed H. Al-Naggar, Siddheshwar D. Raut, Tabassum Siddiqui, Hamdan M. Danamah, Vijaykumar V. Jadhav, Abdullah M. Al-Enizi, Rajaram S. Mane
Summary: This study explores a promising self-growth approach for the synthesis of nickel hydroxide (Ni(OH)2) nanosponge-balls on the surface of a nickel-foam (NiF) electrode. The modified NiF electrode, named Ni(OH)2@NiF, shows distinctive nanosponge-ball morphology and demonstrates excellent energy storage capability and electrocatalytic performance in both hydrogen and oxygen evolution reactions.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Rafael Del Olmo, Gregorio Guzman-Gonzalez, Oihane Sanz, Maria Forsyth, Nerea Casado
Summary: The use of Lithium-Ion Batteries (LIBs) is becoming increasingly extensive, and it is important to optimize the devices to achieve their maximum practical specific capacity. In this study, mixed ionic-electronic conducting (MIEC) binders based on PEDOT:PSS and PEDOT: PDADMA-TFSI were developed for Li-ion cathodes, and their performance was compared with conventional formulations. The influence of electrode formulations, including the addition of conducting carbon and an Organic Ionic Plastic Cristal (OIPC), was also analyzed. The proposed binders showed improved performance compared to conventional formulations with different electrolyte types and active materials.
ELECTROCHIMICA ACTA
(2024)