PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Yang Li,Chunting Guo,Caixia Qi,Dejian Zhang,Huilai Sun,Shuyan Yang,Yong Wan,Yanshuang Wang
Although the formation of plasma electrolytic oxidation (PEO) coatings on aluminum alloys can significantly enhance their service life, they may still suffer from corrosion damage when exposed to harsh environments with strong corrosivity for a long time. In this work, chitosan (CS) was dissolved in four acids, i.e. hydrochloric acid (HCl), citric acid (CA), lactic acid (LA), and acetic acid (HAc), and deposited onto the PEO-coated 5052 aluminum alloy using dip coating method. Scanning electron microscope (SEM), energy dispersive spectrometer (EDS), atomic force microscope (AFM), contact angle (CA) meter, grazing incidence X-ray diffraction (GIXRD), Fourier transform infrared spectrometer (FTIR), and electrochemical workstation system were used to explore the enhancement of the corrosion resistance of PEO-coated 5052 aluminum alloy by application of CS film prepared in different solvent acids. The results showed that the interactions between chitosan and acid ions affects the uniformity, hydrophobicity , thickness and surface roughness of the CS/PEO coating. The HAc-CS/PEO coating had the lowest surface roughness of 32.4 ± 3.9 nm, the largest contact angle of 85.7 ± 2.0°, and the thickest CS film of 20 μm, which significantly improved corrosion resistance of PEO-coated aluminum alloy.
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DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Shilong Su,Yajin Shi,Jinlian Zhang,Xin Zhong,Die He,Qiuyan Li,Junkai Wang,Lianfeng Duan
Polyethylene oxide (PEO) is widely considered to be a highly promising solid polymer electrolyte (SPE) owing to its flexibility, excellent mechanical and chemical stability, and safety. However, PEO still faces challenges in the application of all-solid-state lithium-sulfur batteries (ASSLSBs), such as low ion transport efficiency, lithium dendrite formation, and complex polysulfide shuttle effects. Herein, a unique ring-funnel β-cyclodextrin (β-CD) is introduced as a functional additive into the PEO matrix for structural reconfiguration as a composite solid electrolyte (CSE). The strong non-covalent interactions between β-CD and PEO reveals that the ordered arrangement of the PEO chains is disrupted because the dihedral and torsional angles are disturbed. These interactions significantly expand the amorphous regions of PEO, which increases the ion transport pathways and enhances the chain flexibility to improve ionic conductivity and electrochemical performance. Additionally, β-CD could strengthen the immobilization of TFSI⁻, further promoting Li⁺ dissociation and rapid migration, while effectively suppressing lithium dendrite growth and the polysulfide shuttle effect. As a result, the discharge capacity of ASSLSBs with PEO-LiTFSI-β-CD retain at 650.5 mAh·g⁻ 1 after 200 cycles, exhibiting a coulombic efficiency close to 98 %, which provide a novel design strategy for preparing high-performance and durable SPE for ASSLSBs.
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高影响因子
Journal of Energy Chemistry
·
2022
·
IF 13.599
Qi Ye,Haoyue Liang,Shuhao Wang,Can Cui,Cheng Zeng,Tianyou Zhai,Huiqiao Li
Poly (ethylene oxide) (PEO)-based solid polymer electrolyte is always the most promising candidate for preparing thinner, lighter and safer lithium-ion batteries. However, the lithium dendrites growth of lithium anode and the high-voltage oxidation of cathode are easy to cause the PEO-based battery failure. The way to deal with the different challenges on both sides of the anode and cathode is pursued all the time. In this study, we reported a new strategy to construct the PVDF/PEO/PVDF three-layer structure for solid polymer electrolyte (marked as PVDF@PEO) using PVDF as the functional “skin”. The PVDF@PEO electrolyte can effectively prevent from the lithium dendrites, and shows a stable cycling life over 1000 h in the Li/PVDF@PEO/Li cell. In addition, the PVDF@PEO electrolyte exhibits higher oxidation resistance and can be matched with high-voltage LiCoO 2 cathode. The Li/PVDF@PEO/ LiCoO 2 cell delivered a specific capacity of about 150 mAh g −1 over 150 cycles and maintained good cycling stability. Our research provides insights that the polymer electrolytes constructed with PVDF functional “skin” can simultaneously meet the challenges of both anode and cathode in solid-state lithium-ion batteries (SSLIBs).
研究领域:
材料科学
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电化学
·
能源存储
·
高分子化学
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固态电池
·
界面工程
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高影响因子
RSC Advances
·
2016
·Vol. 6
·期 86
·83406-83411
·
IF 3.289
Gao-Ming Hou,Ming-Qiu Zhang,Yi-Fu Huang,Wen-Hong Ruan
This paper has reported a new polymer nanocomposite of nano-titanium dioxide/polyethylene oxide (TiO2/PEO) incorporated with in situ synthesized hyper-branched poly(amine-ester) (HBPAE) and its application as a polymer electrolyte. Firstly, the HBPAE/HBPAE-g-TiO2/PEO is obtained by synthesizing HBPAE in methyl acrylic acid methyl ester grafted TiO2 (MMA-g-TiO2)/PEO, to simultaneously form the hypergrafted polymer on the nano inclusions (HBPAE-g-TiO2) and hyperbranched particles dispersed in the PEO. Then the Li2SO4 is introduced to prepare the polymer electrolyte, and the relevant structure and properties are studied. It is found that the incorporation of HBPAE into TiO2/PEO can benefit the ionic transportation of the composite electrolyte, and can bridge the nano inclusions which further improves ionic conductivity. The best ionic conductivity of the HBPAE/HBPAE-g-TiO2/PEO polymer electrolyte with 15 wt% TiO2 content can reach as high as 3.2 mS cm−1, which is ∼10 times of that of the PEO electrolyte and ∼28% of that of the HBPAE-g-TiO2/PEO electrolyte without homopolymer component. Furthermore, the optimized polymer electrolyte is assembled into a LiTi2(PO4)3//LiMn2O4 lithium-ion battery, with better excellent cell performance compared with the PEO electrolyte. This study shows that the new polymer nanocomposite has great potential for the assembly of high performance solid electrochemical devices.
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DOI
高影响因子
Journal of Energy Storage
·
2026
·
IF 10.7
Wenteng Yang,Zhiding Han,Zhi Nie,Yingqiang Wu,Zaowen Zhao,Lei Yu,Junchen Zhou,Guizhen Wang,Xuerong Zheng,Yida Deng
Polyethylene oxide (PEO)-based electrolytes exhibit great compatibility with lithium-metal anodes. However, complex cleavage reactions occur with cathode electrode at high voltages, and constructing artificial interfacial layers has emerged as an effective strategy. In this work, we employed atomic layer deposition (ALD) to build a nanometer-scale amorphous Al₂O₃ interlayer between the LiNi₀.₆Co₀.₂Mn₀.₂O₂ (NCM622) cathode and the PEO/Li 7 La 3 Zr 2 O 12 (LLZO) composite electrolyte, which enhanced the cycling stability of the cells at 4.3 V. With an optimized interfacial thickness, the capacity retention improved from 44.8% to 97.3% after 100 cycles and remained 86.5% after 200 cycles, accompanied by enhanced rate capability. The artificial interlayer suppressed parasitic reactions by blocking direct contact between the active material and polymer electrolyte, thereby alleviating interfacial polarization during cycling.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Wei Bao,Zhenyuan Hu,Yaying Wang,Jianghong Jiang,Shikang Huo,Weizhen Fan,Weijie Chen,Xiao Jing,Xinyang Long,Yunfeng Zhang
Endowing polyethylene oxide (PEO)-based electrolyte with low crystallinity and high efficient Li + transport channels is urgently required for next generation all-solid-state lithium metal batteries (LMBs). Herein, a new type of oxyethyl containing poly(ionic liquid) modified graphene oxide nanoparticles ( ox -PIL@GO) is coincidentally proposed for preparing PEO based organic–inorganic composite electrolyte membranes (CPEs). Both experimental and DFT simulation results indicate that the dissociation of the LiTFSI is significantly enhanced by the anticipated electrostatic interaction between imidazolium cation and TFSI - anions in CPEs. In addition, the formed electrostatic interaction can also inhibit the movement of TFSI - , giving rise to the increased lithium transference number of 0.61 from 0.21 for the neat PEO/LiTFSI electrolyte. Furthermore, the ion–dipole interaction between imidazolium cation and PEO chain largely reduces the crystallinity of PEO and the ionic conductivity of 1.01 × 10 -4 S cm −1 at 40 °C is successfully obtained. As a result, the ox -PIL@GO incorporated PEO electrolyte enables the Li||Li symmetric cell with long-term, square-wave galvanostatic cycling test of 800 h at current density of 0.1 mA cm −2 at 50 °C and the solid-state LiFePO 4 |CPE|Li battery with high discharge specific capacity of 116 mAh g −1 at 40 °C at 1C for 300 cycles.
研究领域:
材料科学
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电化学
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能源存储
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DOI
高影响因子
RSC Advances
·
2021
·Vol. 11
·期 62
·39476-39483
·
IF 3.361
Li Chen,Boqiao Li,Liangliang Zhu,Xiaobin Deng,Xueyan Sun,Yilun Liu,Chen Zhang,Wei Zhao,Xi Chen
Aluminum–air batteries are promising electronic power sources because of their low cost and high energy density. However, traditional aluminum–air batteries are greatly restricted from being used in the field of flexible electronics due to the rigid battery structure, and the irreversible corrosion of the anode by the alkaline electrolyte, which greatly reduces the battery life. To address these issues, a three-dimensional dual-network interpenetrating structure PVA/LiCl/PEO composite gel polymer electrolyte (GPE) is proposed. The gel polymer electrolyte exhibits good flexibility and high ionic conductivity (σ = 6.51 × 10−3 S cm−1) at room temperature. Meanwhile, benefiting from the high-performance GPE, an assembled aluminum–air coin cell shows a highest discharge voltage of 0.73 V and a peak power density (Pmax) of 3.31 mW cm−2. The Al specific capacity is as high as 735.2 mA h g−1. A flexible aluminum–air battery assembled using the GPE also performed stably in flat, bent, and folded states. This paper provides a cost-effective and feasible way to fabricate a composite gel polymer electrolyte with high performance for use in flexible aluminum–air batteries, suitable for a variety of energy-related devices.
研究领域:
储能
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材料科学
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电化学
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柔性电子学
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DOI
高影响因子
TRIBOLOGY INTERNATIONAL
·
2024
·
IF 6.1
An Liu,Song Gao,Shan Du,Hailin Lu,Junde Guo
Plasma electrolytic oxidation (PEO) has demonstrated significant enhancements in the mechanical properties and corrosion resistance of titanium alloys. Despite these advantages, the presence of micropores and microcracks in the coating can still detrimentally impact tribological properties. This paper introduces a novel approach involving the in-situ growth of a surface structure. The resulting interface structure exhibits outstanding tribological properties under a load of 3 N and a speed of 1.5 cm/s. In contrast to prior studies, improvements are made to the electrical parameters and electrolyte formula of Plasma electrolytic oxidation, facilitating the in-situ growth of MoSe 2 . This results in the formation of a lubricating layer and a robust TiO 2 ceramic coating with excellent adhesion. A systematic analysis of friction, wear characteristics, reveals that MoSe 2 in situ grow on the surface of the PEO coating, within micropores, microcracks, and crater structures after hydrothermal treatment. This process significantly enhances the microporous structure of the coating, with the MoSe 2 film forming a dense and uniform interlocking layer with the PEO lower layer. Dry friction test experiments demonstrate a 33.7% reduction in friction coefficient and a 29% decrease in wear rate compared to the PEO sample, indicating the synergistic effect between the MoSe 2 film and the PEO coating.
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Yan He,Jinpeng Guo,Chuanchuan Bi,Zhifei Hao,Chunping Li,Qi Wang,Xiaogang Han
The safety and high mechanical strength of all-solid state lithium battery are the main challenges that limit their development and application. Although polypropylene (PP) separators have excellent mechanical properties, their poor thermal stability remains a problem that requires immediate attention. Herein, a sandwich-structured composite solid electrolyte consisting of polyimide-Celgard-polyimide/PEO-LiTFSI (PI-PP-PI/PEO-LiTFSI) is reported for use in lithium metal batteries. The presence of a carbonyl group in the PI enhances its overall electrochemical performance and thermal stability. The composite solid electrolyte exhibited an ionic conductivity of 1.32 mS/cm at 60 °C and a tensile strength of up to 21.1 Mpa. Particularly, we discovered that the film maintained its shape without deformation at 180 °C, thereby facilitating steady cycling of the lithium battery for 1600 h at 0.1 mA/cm 2 and demonstrating excellent resistance to lithium dendrite formation. After 120 and 150 cycles at 0.2 C and 1 C, respectively, the capacity was 104.8 and 79.60 mAhg −1 and the coulombic efficiency was close to 100%. This study provides a potential strategy for the development of solid-state lithium-metal batteries with excellent mechanical properties and high-temperature resistance.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Hao Xu,Shuai Liu,Zhiang Li,Fan Ding,Jie Liu,Weimin Wang,Kaikai Song,Ting Liu,Lina Hu
Solid polymer electrolytes (SPEs) have been considered the most promising separators for all-solid-state lithium metal batteries (ASSLMBs) due to their ease of processing and low cost. However, the practical applications of SPEs in ASSLMBs are limited by their low ionic conductivities and mechanical strength. Herein, we developed a three-dimensional (3D) interconnected MXene (Ti 3 C 2 T x ) network and Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) particles synergistically reinforced polyethylene oxide (PEO)-based SPE, where the association of Li + with ether-oxygen in PEO could be significantly weakened through the Lewis acid-base interactions between the electron-absorbing group (Ti–F, −O–) of Ti 3 C 2 T x and Li + . Besides, the TFSI − in lithium salts could be immobilized by hydrogen bonds from the Ti–OH of Ti 3 C 2 T x . The 3D interconnected Ti 3 C 2 T x network not only alleviated the agglomeration of inorganic fillers (LLZTO), but also improved the mechanical strength of composite solid electrolyte (CSE). Consequently, the assembled Li||CSE||Li symmetric battery showed excellent cycling stability at 35 ℃ (stable cycling over 3000 h at 0.1 mA cm −2 , 0.1 mAh cm −2 ) and −2 ℃ (stable cycling over 2500 h at 0.05 mA cm −2 , 0.05 mAh cm −2 ). Impressively, the LiFePO 4 ||CSE||Li battery showed a high discharge capacity of 145.3 mAh/g at 0.3 C after 300 cycles at 35 ℃. This rational structural design provided a new strategy for the preparation of high-performance solid-state electrolytes for lithium metal batteries.
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DOI
PubMed
高影响因子
Journal of Energy Chemistry
·
2021
·
IF 9.676
Liansheng Li,Yuanfu Deng,Huanhuan Duan,Yunxian Qian,Guohua Chen
Solid electrolytes with desirable properties such as high ionic conductivity, wide electrochemical stable window, and suitable mechanical strength, and stable electrode–electrolyte interfaces on both cathode and anode side are essential for high-voltage all-solid-state lithium batteries (ASSLBs) to achieve excellent cycle stability. In this work, a novel strategy of using LiF and LiNO 3 as synergistic additives to boost the performance of PEO-PVDF/LLZTO-based composite solid electrolytes (CSEs) is developed, which also promotes the assembled high-voltage ASSLBs with dual-interfaces stability characteristic. Specifically, LiF as an inactive additive can increase the electrochemical stability of the CSE under high cut-off voltage, and improve the high-voltage compatibility between cathode and CSE, thus leading to a stable cathode/CSE interface. LiNO 3 as an active additive can lead to an enhanced ionic conductivity of CSE due to the increased free-mobile Li + and ensure a stable CSE/Li interface by forming stable solid electrolyte interphase (SEI) on Li anode surface. Benefiting from the improved performance of CSE and stable dual-interfaces, the assembled NCM622/9[PEO 15 -LiTFSI]-PVDF-15LLZTO-2LiF-3LiNO 3 /Li cell delivers a high rate capacity of 102.1 mAh g −1 at 1.0 C and a high capacity retention of 77.4% after 200 cycles at 0.5 C, which are much higher than those of the ASSLB assembled with additive-free CSE, with only 60.0 mAh g −1 and 52.0%, respectively. Furthermore, novel cycle test modes of resting for 5 h at different charge states after every 5 cycles are designed to investigate the high-voltage compatibility between cathode and CSE, and the results suggest that LiF additive can actually improve the high-voltage compatibility of cathode and CSE. All the obtained results confirm that the strategy of using synergistic additives in CSE is an effective way to achieve high-voltage ASSLBs with dual-interfaces stability.
研究领域:
材料科学
·
电化学
·
能源存储
·
固态电池
·
界面化学
·
高分子科学
·
无机非金属材料
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DOI
高影响因子
Biomimetics
·
2026
·Vol. 11
·期 8
·599
·
IF 4.2
Haiguang Zhang,Feng Jiang,Qianmin Gao,Qingxi Hu,Jiaxuan Feng
Vascular stent implantation is a major treatment for vascular diseases, yet postoperative infection and persistent inflammation increase the risk of in-stent restenosis. Herein, core–shell structured PCL/PEO-PVP fiber membranes co-loaded with ciprofloxacin hydrochloride (CIP) and curcumin (CUR) were fabricated via coaxial electrospinning. Orthogonal experiments were conducted to optimize critical spinning parameters through multi-index comprehensive evaluation. Characterizations confirm intact core–shell architecture and stable polymeric backbone structure. In vitro release tests reveal sequential drug-delivery behavior: a rapid initial release of hydrophilic CIP and a delayed sustained release of hydrophobic CUR were observed, contributing to early-stage antibacterial and long-term anti-inflammatory effects, respectively. The “antibacterial zone” method verifies favorable antibacterial activity againstStaphylococcus aureus(S. aureus) andEscherichia coli(E. coli). ELISA results demonstrate the enhanced anti-inflammatory capacity of the dual-drug-loaded coaxial fiber membrane. Cellular assays confirm satisfactory cytocompatibility, and endothelial cells achieve normal proliferation and exhibit typical polygonal morphology on the membrane surface. This dual-drug-loaded coaxial-fiber membrane realizes coordinated sequential antibacterial and anti-inflammatory properties, which provides a feasible strategy for developing functional coatings toward vascular stents.
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DOI
高影响因子
危险品化学品经营许可证（带存储）