Comparison of composite cylinder damage under different working conditionsYang, Bo
doi: 10.1088/1742-6596/2789/1/012005pmid: N/A
The finite element model of the carbon fiber all-wound aluminum cylinder was created to analyze the damage caused by high pressure, and the progression of damage as pressure increased was examined. The damage initially occurs in the transitional area between the cylinder end and cylinder body before progressing to the winding layer of the cylinder. The failure characteristics of the circumferential wound layer contrast with those of the spiral wound layer.
Research on safety design of transport packaging for lithium battery productsChen, Yonghui; Wang, Min
doi: 10.1088/1742-6596/2789/1/012014pmid: N/A
In view of the characteristics of dangerous goods exported by lithium batteries, the safety norms of lithium battery transport packaging stipulated by international technical regulations are sorted out, and the performance requirements of dangerous goods packaging for export lithium batteries are studied. Based on the overall safety design and protection of this kind of dangerous goods packaging, the design scheme of lithium battery tray protection and carton packaging is proposed. A drop simulation test is carried out to analyze and evaluate the design scheme.
Analysis of polyanion single ion conductor based on preparation of gel electrolyte for lithium ion batteryXue, Jingyuan
doi: 10.1088/1742-6596/2789/1/012007pmid: N/A
This study achieved efficient preparation of polyanionic single ion conductors by selecting appropriate raw materials and controlling preparation conditions. The results show that the window stability of electrolytic gel with a wide ionic electrochemical conductor is 2-4.5 V and 0.74 lithium ion migration. Lithium iron phosphate battery (LFP) is the positive electrode, lithium metal is the negative electrode, and PVDF-HFP Pampsli ion is the electrolyte. When lithium salt is not added, the rated power of the battery is 125 mah·g-1, and the current density is 2 C. The battery has a range of more than 500 times. In the current high-density 5 C situation, it has a specific capacity of 100 mAh·g-1 and a stable cycling ability of over 300 cycles, while maintaining nearly 100% stable Colomb efficiency.
Three-dimensional ZnO/CC coupled with external magnetic field for controlled sodium depositionWang, Yunfei; Wang, Xia; Li, Shandong
doi: 10.1088/1742-6596/2789/1/012010pmid: N/A
Sodium-metal batteries are garnering increasing attention due to their utilization of abundant resources and high theoretical specific capacity. However, the growth of sodium dendrites has remained a challenging issue, which makes it difficult to apply. In this study, we employ carbon cloth as a substrate to mitigate the sodium dendrite growth, onto which sodium-affinitive material ZnO is grown to facilitate uniform nucleation. Furthermore, we enhance the cycling stability and rate performance significantly by introducing an external magnetic field. Under a 200 mT applied magnetic field and deposition/stripping at 1 mA/cm2 and 1 mAh/cm2, symmetric cells exhibit a remarkable cycling stability exceeding 1200 hours. Additionally, in full cells, NVP is used for the positive electrode, and ZnO/CC is the negative electrode, with a capacity of 108 mAh/g, and energy density maintained at 429.4 Wh/kg over 200 cycles under the influence of a 200 mT magnetic field.
Research on the load-shedding strategy of isolated power grids for regional power grids including wind-hydro power under low-frequency and low-voltage conditionsZhang, Lei; Wang, Mingjin; Zhu, Dena; Xiao, Ni
doi: 10.1088/1742-6596/2789/1/012013pmid: N/A
After more and more wind farms and hydropower plants are connected to the regional power grid, the wind farms and their low-voltage ride-through capabilities of the power grid become increasingly complex. In order to ensure the stable operation of the isolated power grids with wind-hydro power, it is necessary to implement appropriate load-shedding strategies under low-frequency and low-voltage conditions. In this article, we focus on the study of strategies for the operation of district power grids, including wind hydro power, under isolated operation conditions. By combining theoretical analysis with practical considerations, load-shedding strategies are proposed for district power grids under low-frequency and low-voltage. To demonstrate its effectiveness, a simulation model that includes one wind farm and five hydropower plants was conducted to achieve positive results.
Characterization of LiNi0.8Co0.15Al0.05O2 cathode material synthesized via co-precipitation methodLv, Guangzhe; Tong, Binbin; Shi, Weixi; Li, Nuanfu; Wang, Lei
doi: 10.1088/1742-6596/2789/1/012006pmid: N/A
LiNi0.8Co0.15Al0.05O2 cathode material was synthesized using the co-precipitation method, and the effect of synthesis conditions on powder properties was studied. The results indicate that adjusting the pH value and complexing agent concentration during the reaction process can effectively control the precipitation process. The obtained hydroxide precursor is petallike, and the morphology of the cathode material powder after high-temperature sintering is well-dispersed spherical particles. The changes in the sintering system can significantly affect the crystallization process and crystal structure of cathode materials. As the sintering temperature increases, the peak rate I (003)/I (104) significantly decreases, while the R value increases. With the prolongation of sintering time, I (003)/I (104) first increases and then decreases, and the R value first decreases and then increases. After sintering at 750°C × 12 h, the cathode material has the highest peak rate and the lowest R value, indicating the lowest degree of cation mixing, higher structural integrity and the highest electrochemical activity at this time.
Peer Review Statementdoi: 10.1088/1742-6596/2789/1/011002pmid: N/A
All papers published in this volume have been reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing.• Type of peer review: Single Anonymous• Conference submission management system: Morressier• Number of submissions received: 73• Number of submissions sent for review: 54• Number of submissions accepted: 29• Acceptance Rate (Submissions Accepted / Submissions Received × 100): 39.7• Average number of reviews per paper: 3• Total number of reviewers involved: 10• Contact person for queries:Name: Xuexia YeEmail: [email protected]: AEIC Academic Exchange Information Centre
Evaluation of rapid gas decompression (RGD) resistance of sealing materials for hydrogen-doped pipeline valvesOuyang, Xin; Peng, Daigang; Peng, Shiyao; Cong, Chuanbo; Man, Jianfeng; Wu, Xuejian; Liu, Xiaoben
doi: 10.1088/1742-6596/2789/1/012001pmid: N/A
With the rapid development of hydrogen-doped natural gas pipelines, the evaluation of the applicability of hydrogen to natural gas pipeline systems is bound to gradually involve all aspects of natural gas pipelines. Targeted at the non-metallic sealing materials for valves of hydrogen-doped natural gas pipelines, this paper, according to the ISO 23936-2 standard, carried out the rapid gas decompression (RGD) tests of hydrogenated nitrile butadiene rubber (HNBR), fluorine rubber 246 (FKM246) and fluorine rubber 26 (FKM26), and the damage level of cracking failure for the rubber materials in the course of rapid release of gaseous medium was obtained (DL). The mechanical properties and volumetric dissolution rate of the three rubber materials were tested before and after the high-pressure gas mixture treatment, which explains the reason for the cracking failure of the rubber materials during the RGD test. The study obtained the influence law of high-pressure gas mixture with different hydrogen volume fractions on the RGD resistance of HNBR, FKM246, and FKM26, and selected the material with the optimal RGD resistance as FKM26, which can be used as a reference for the selection of sealing materials for the valves of hydrogen-doped natural gas pipelines in engineering.
Research on hydrogen station site selection and capacity planning based on an improved genetic algorithmGuo, Jiejie; Qin, Zhenkun; Zhang, Lingting
doi: 10.1088/1742-6596/2789/1/012008pmid: N/A
As hydrogen fuel cell vehicles enter the public eye, it is necessary to develop reasonable hydrogen station layouts and capacity plans to predict and meet future hydrogen fuel demands. This article employs a classical flow capture model with the objectives of minimizing the unit cost of hydrogen station networks and maximizing the capture rate of regional traffic flows. Through the improvement of genetic algorithms for simulation, the study determines the location of hydrogen stations and calculates their corresponding scales. In the end, the hydrogen station network is obtained with a unit hydrogen cost of 11.60 yuan/kg and a traffic capture rate of 90.47%. The research results validate the effectiveness of the proposed model, providing a reference for the investment and construction of future hydrogen stations.
Development of intelligent redox-responsive biopolymer-based antibacterial coating for controlled drug releasePan, Kai; Lin, Yijun; Xi, Zhiwei; Wang, Lijie; Huang, Chunfang
doi: 10.1088/1742-6596/2789/1/012004pmid: N/A
Most antibacterial coatings face challenges related to uncontrolled and rapid release of antimicrobial agents. Consequently, developing intelligent antibacterial coatings featuring controlled and on-demand drug release has become imperative. In this study, we prepared a redox-responsive biopolymer, γ-PGA-PDA-DA, by modifying γ-polyglutamic acid (γ-PGA) with dopamine (DA) and pyridine dithioethylamine hydrochloride (PDA). The γ-PGA-PDA-DA biopolymer was assembled with the antibacterial agent ofloxacin (OFL) to prepare drug-loaded colloidal particles. Colloidal particle size and morphology were characterized through TEM, zeta potential analysis, and nanoparticle size analysis. Subsequently, an oxidation-reduction responsive drug delivery antibacterial coating was formed on the surface of 316 L stainless steel through electrophoretic deposition (EPD). The responsive drug release and antimicrobial properties of the coating were assessed via drug release experiments and antibacterial zone tests. The results demonstrate the effective bactericidal effects and highlight its intelligent antibacterial coating functionality.