ACS Applied Materials & Interfaces
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2024
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IF 8.3
Jiaxin Wu,Yuhan Ma,Haichang Zhang,Haonan Xie,Jin Hu,Chunsheng Shi,Biao Chen,Chunnian He,Naiqin Zhao
Poly(ethylene oxide) (PEO)-based electrolytes have been extensively studied for all-solid-state lithium-metal batteries due to their excellent film-forming capabilities and low cost. However, the limited ionic conductivity and poor mechanical strength of the PEO-based electrolytes cannot prevent the growth of undesirable lithium dendrites, leading to the failure of batteries. Metal–organic frameworks (MOFs) are functional materials with a periodic porous structure that can improve the electrochemical performance of PEO-based electrolytes. However, the enhancement effect of MOFs with different metal centers and the interaction mechanism with PEO remain unclear. Herein, MOF-74s with Cu or Ni centers are prepared and used as fillers of PEO-based electrolytes. Adding 15 wt % of Cu-MOF-74 to the PEO-based electrolyte (15%Cu-MOF/P–Li) effectively improves the ionic conductivity, lithium transference number, and mechanical strength of the PEO-based electrolyte simultaneously. Furthermore, the ordered pore channels of Cu-MOF-74 provide uniform Li-ion transport pathways, facilitating homogeneous Li+ deposition. As a result, the lithium symmetric cell with 15%Cu-MOF/P–Li shows stable cycles for 1080 h at 0.1 mA cm–2 and 0.1 mAh cm–2, and the Li | 15% Cu-MOF/P–Li | LFP full cell exhibits a long cycle life up to 200 cycles at 60 °C and 0.5 C, with a capacity retention rate of 89.7%.
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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PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2024
·Vol. 35
·期 30
·1-12
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IF 2.8
Liu Wei,Zhang Weichao,Shen Fenglei
In this paper, 3-glycidyl ether oxypropyltrimethoxysilane (KH560) was incorporated into the reaction product of polyether amine (2-APPG) and polyethylene glycol diglycidyl ether (PEDGE) to create an organic-inorganic hybrid polymer. The hybrid polymer underwent the catalytic hydrolysis of a hydrochloric acid-ethanol solution and was then swelled in the liquid electrolyte containing lithium bis(trifluoromethanesulfonyl) imide (LiTFSI) to form the novel hybrid polymer electrolyte (GPE). The TGA results indicate that the samples underwent a 4% mass loss within the temperature range of 25 °C to 280 °C. The electrochemical test results show that the conductivity of the GPE reaches 1.57 × 10 −3 S/cm at room temperature, and the lithium-ion transference number (t + ) reaches 0.22. In addition, electrochromic devices prepared with APK-1 as the electrolyte exhibit good light density change (∆ (OD) = 0.134), coloring efficiency of 153.3 cm 2 /C, and stability with 400 stable cycles within the voltage range of -2.5 V to 2.5 V. The above tests demonstrate the enormous potential of the proposed GPEs in the application of electrochromic devices.
研究领域:
材料科学
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电化学
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高分子科学
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电致变色器件
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高影响因子
Inorganic Chemistry Frontiers
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2024
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IF 6.1
Yongquan Zhang,Hongchang Gao,Jingshun Wang,Qingguo Chi,Tiandong Zhang,Changhai Zhang,Yu Feng,Yue Zhang,Dianxue Cao,Kai Zhu
All-solid-state lithium metal batteries (ASSLMBs) are considered the most competitive next-generation energy storage batteries due to their high energy density and high safety. Polyethylene oxide (PEO) is an ideal solid-state electrolyte due to its high chain flexibility, high dielectric constant, and strong dissociation ability towards lithium salts. However, the application of PEO is severely hindered by drawbacks such as low ion conductivity at room temperature and low electrochemical window. In this work, we constructed a Li1.25Al0.25Zr1.75(PO4)3 (LAZP)/PEO composite solid-state electrolyte (CSSE) with improved ion conductivity, enlarged electrochemical window, and stable charge–discharge cycle performance. The CSSE leads to an obvious LiF layer and Li2CO3 formation at the interface of lithium metal. Meanwhile, the addition of LAZP reduces the side reaction between PEO and the lithium metal significantly and suppresses the deterioration of ion conductivity. In addition, we modified LiFePO4 (M-LFP), the cathode sheet of the ASSLMBs, by adding an appropriate proportion of multi-walled carbon nanotubes (MWCNTs), PEO and lithium bis(trifluoromethane sulfonimide) (LiTFSI) to improve the ionic and electronic conductivity inside the cathode of the ASSLMBs. The Li/CSSE/M-LFP full cell exhibits a specific discharge capacity of 152 mA h g−1 at 60 °C and 2 C rate and a capacity retention rate of 93.5% after 200 cycles at 1 C. This work demonstrates an effective strategy for increasing the specific capacity, rate ability and long-cycle performance of ASSLMBs.
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
JOURNAL OF MATERIALS SCIENCE
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2026
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IF 4.4
Wang Tielin,Ji Jiahao,Wen Jingli,Yang Zhaoxia,Lin Tao,Lian Fang,Meng Nan,Shao Huiping
Lithium-ion batteries are pivotal in the development of advanced compact energy storage systems. In this study, the network-structured lithium iron phosphate-polyethylene oxide-polyvinylidene fluoride (LFP–PEO–PVDF) electrodes, the PEO electrolyte and PEO/LFP–PEO–PVDF composite electrodes were prepared by 3D gel printing (3DGP). The binder of the LFP–PEO–PVDF electrode is a PEO–PVDF composite binder, and the different PEO–PVDF ratios in the binder were varied with pure PEO (no PVDF), 9:1, 7:3 and 5:5, which corresponded to four electrode slurries. The results show that the electrodes printed with a PEO–PVDF ratio of 7:3 exhibited good shape retention capability and electrochemical performance. The printing slurry of 7:3-electrode had the apparent viscosity of 1.20 Pa s at a shear rate of 358.2 s −1 , which was suitable for printing. The electrochemical measurement results show that the capacity retention rates of the network-structured electrodes with 7:3-electrode was 85.5% after 300 cycles at 0.5 C. The incorporation of PVDF into the binder improved the structural retention capability and capacity retention rate of the electrode during cycling. The printed PEO electrolyte shows good shape retention and uniform thickness, with an ionic conductivity of 1.32 mS cm −1 at 60 °C. The PEO/LFP–PEO–PVDF composite electrodes demonstrate good interfacial contact between the electrode and electrolyte layers, and the composite electrodes delivered a specific capacity of 97.2 mAh g −1 and a capacity retention rate of 71.7% after 50 cycles at 0.1 C.
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高影响因子
CARBOHYDRATE POLYMERS
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2012
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IF 3.628
Ke Zhang,Pengyu Zhuang,Zhengke Wang,Youliang Li,Zhiqiang Jiang,Qiaoling Hu,Minying Liu,Qingxiang Zhao
For the development of biocompatible and degradable biomaterials, a kind of well-defined graft copolymer consisting of chitosan back-bone and amphiphilic PEO-PLLA-PEO branch chains was synthesized by Cu(0) catalyzed one-pot strategy combining “click” chemistry and single electron transfer-nitroxide radical coupling (SET-NRC) reaction. First, the precursors of 6-azide- N -phthaloyl-chitosan, TEMPO-PEO-alkyne and mPEO-PLLA-Br were designed and produced. Then, the one-pot coupling reactions between these precursors were performed in the presence of nanosized Cu and PMDETA. The efficiencies of the coupling reactions were greater than 90% determined by the FTIR and ESR spectra. The structure of graft copolymer with 43% of the grafting ratio was confirmed by the spectral analysis. This work provided a route to prepare chitosan graft copolymer.
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DOI
高影响因子
Materials Today Communications
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2022
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IF 3.662
Chao Zheng,Xiaoyan Yu,Xiaoyi Chen,Mingming Chang
Poly(ethylene oxide)- b -poly(propylene oxide)- b -poly(ethylene oxide) (PEO-PPO-PEO) and acrylamide are both commercially available and widely used water-soluble substances. There are many situations that PEO-PPO-PEO coexist with acrylamide in industry applications, while little is known about the influence of acrylamide on cloud point of PEO-PPO-PEO aqueous solution. In this work, it reveals a universal solubilization of PEO-PPO-PEO by acrylamide. There is always an increase in cloud point with addition of acrylamide no matter what the molecular structure and concentration of PEO-PPO-PEO is. It is found the solubilization is more pronounced when PEO-PPO-PEO is with lower molecular weight or lower weight fraction of PPO segments. On the other hand, the cloud point of systems at lower concentration is more sensitive to addition of acrylamide. On the contrary, polyacrylamide exhibits an opposite impact on cloud point of PEO-PPO-PEO. Acrylamide/PEO-PPO-PEO solution changes from clear to cloudy after polymerization of acrylamide.
研究领域:
化学
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材料科学
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DOI
高影响因子
ADVANCED MATERIALS
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2024
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IF 27.4
Yuan Bai,Gang Tang,Lei Xie,He Lian,Shihao Wang,Chaopeng Liu,Qiao Yu,Jianying Ji,Kailiang Ren,Xiaodan Cao,Cong Li,Lili Zhou,Yizhu Shan,Hongyu Meng,Zhou Li
Flexible films with optimal piezoelectric performance and water-triggered dissolution behavior are fabricated using the co-dissolution–evaporation method by mixing trimethylchloromethyl ammonium chloride (TMCM-Cl), CdCl 2 , and polyethylene oxide (PEO, a water-soluble polymer). The resultant TMCM trichlorocadmium (TMCM-CdCl 3 ) crystal/PEO film exhibited the highest piezoelectric coefficient (d 33 ) compared to the films employing other polymers because PEO lacks electrophilic or nucleophilic side-chain groups and therefore exhibits relatively weaker and fewer bonding interactions with the crystal components. Furthermore, upon slightly increasing the amount of one precursor of TMCM-CdCl 3 during co-dissolution, this component gained an advantage in the competition against PEO for bonding with the other precursor. This in turn improved the co-crystallization yield of TMCM-CdCl 3 and further enhanced d 33 to ≈71 pC/N, exceeding that of polyvinylidene fluoride (a commercial flexible piezoelectric) and most other molecular ferroelectric crystal-based flexible films. This study presents an important innovation and progress in the methodology and theory for maintaining a high piezoelectric performance during the preparation of flexible multi-component piezoelectric crystal films.
研究领域:
材料科学
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物理学
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Yicai Wu,Zijie Mao,Xianxian Qin,Kun Jiang,Xian-Yin Ma,Tian-Wen Jiang,Wen-Bin Cai
Triblock Pluronics of polyoxyethylene (PEO) and polyoxypropylene (PPO) are identified as competent suppressors for copper (Cu) electroplating in advanced electronics manufacturing. However, the specific interfacial roles of PEO and PPO blocks in Pluronic suppressors, are not yet fully understood, which is crucial for the rational design of effective suppressors. Herein, the influences of composition and block arrangement of such Pluronics on the inhibition against Cu plating are systematically investigated. The decrease in Cu deposition mass with increasing PPO content suggests that the PPO blocks are the main contributor to the inhibition strength of Pluronics, as demonstrated by the positive correlation between electrodeposited Cu mass and hydrophilic-lipophilic balance (HLB) value. Comparative analysis of normal and reverse Pluronic pairs with similar compositions indicates that an adequately long PEO block is indispensable to maintain the inhibition stability of Pluronics. Moreover, electrochemical attenuated total reflection surface-enhanced infrared absorption spectroscopy (ATR-SEIRAS) offers direct evidence that the PEO block, rather than the PPO block, compactly adsorbs on the chloridion (Cl − ) adlayer covered Cu surface. This work highlights the importance of balancing the PPO-dominated inhibition strength and the PEO-dominated inhibition stability in the design of practical copolymer suppressors, for which the HLB may serve a valuable indicator, together with the PEO block length.
研究领域:
材料科学
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电化学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
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2022
·Vol. 46
·期 6
·7686-7693
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IF 4.672
Weibo Shi,Jiayao Wang,Xinyi Zhang,Qingli Wang,Wenwen Deng
Summary Organic electrode materials have attracted extensive attention because of their high flexibility and sustainability, but their application was limited by the disadvantage of dissolution in conventional electrolyte. Here, we designed an all solid-state lithium-ion battery (ASSLIB) with 11,11,12,12-tetracyano-9,10-anthraquinonedimethane (TCAQ) as the cathode and lithium metal as the anode. The solid electrolyte consisted of Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO)/polyoxyethylene(PEO) and lithium bis(trifluoromethanesulfonimide) (LiTFSI) salt. The Li||TCAQ ASSLIB delivered a discharge specific capacity of 83 mAh g −1 at a current density of 17 mA g −1 with a capacity retention of 72.2% after 100 cycles. Our research provided a new organic cathode material for high-performance ASSLIBs.
研究领域:
材料科学
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能源存储
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DOI
高影响因子
Advanced Physics Research
·
2025
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IF 2.8
Jiaxiao Qi,Yongjing Wang,Haixiong Tang,Jiayu Zhao,Yu Hong,Qiong Li,Ming Jiang,Lijie Dong
Solid-state electrolytes (SSEs) are promising for lithium batteries with higher safety, cycling stability, and energy density. Among the various SSEs, solid polymer electrolytes (SPEs) are a highly preferred choice due to their high thermal stability, thin design, and good formability. However, polymer electrolytes have low ionic conductivity, for example, polyethylene oxide (PEO), one of the most dominant polyelectrolyte materials, has a low ionic conductivity at room temperature due to its high crystallinity. Theoretically, increasing the ionic active sites by decreasing its crystallinity is an effective strategy, but this may lead to its inability to form films or poor mechanical strength. In this work, the crystallinity of PEO is reduced by introducing succinonitrile (SN), and solution blow-spun polyacrylonitrile (PAN) fiber film is employed as the skeleton of the SPE to provide good mechanical strength. PEO-LiTFSI-SN/PAN SPEs have a tensile strength of at least 4.5 MPa. To provide more Li + active sites, PEO-LiTFSI-SN/MXene@PAN composite SPEs are fabricated by doping the PAN fibers with MXene rich in functional groups. The specific capacity of the LFP|PEO-LiTFSI-SN/MXene@PAN|Li button cell reaches 134.8 mAh g −1 in the first cycle, and the capacity retention rate of 100 cycles is 75.8% at 0.5 C at room temperature.
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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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
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IF 4.798
Fei Chen,Dunjie Yang,Wenping Zha,Bodi Zhu,Yanhua Zhang,Junyang Li,Yuping Gu,Qiang Shen,Lianmeng Zhang,Donald R. Sadoway
The advantages of all-solid-state batteries in terms of high energy density and improved safety have accelerated the research into durable and reliable solid electrolytes and into scale up of their processing technology. High lithium-ion-conducting Li 7 La 3 Zr 2 O 12 (LLZO) ceramic-based solid electrolytes have been intensively studied recently, but their widespread commercial deployment has been constrained due to their fragility and brittleness . In the present study, LLZO ceramic powders have been successfully incorporated into the polyethylene oxide (PEO) polymer by tape casting. The ionic conductivity of the PEO/LLZO composite electrolyte membranes is significantly enhanced at the optimal LLZO concentration of 7.5 wt.% at which the materials exhibits maximum ionic conductivity of 5.5 × 10 −4 S·cm −1 at 30 °C. The ionic conductivity enhancement mechanism of the composite electrolyte is revealed by differential scanning calorimetry (DSC), which shows that the LLZO filler represses crystallinity in PEO. Furthermore, as evidence of the advantageous electrochemical properties of the composite electrolyte an all-solid-state battery of LiFePO 4 /Li fabricated herein delivered a maximum discharge capacity of 150.1 mAh·g −1 at 0.1C, good cycling performance, and excellent rate capability under 60 °C.
研究领域:
材料科学
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电化学
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
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IF 5.2
Qian Zhang,Jie Lin,Yundan Dong,Fengwen Sun
To explore the feasibility of applying rheological methods to the electrospinning process, the relationship between the rheological behavior and electrospinning performance was investigated using PEO and PVA as two electrospinning assistant agents with bio-liquefied formaldehyde resin (BLF) as electrospinning precursor. The basic properties, such as viscosity, conductivity, and surface tension were determined by measuring the parameters of the precursors. The steady-state rheological behavior of the precursor was tested, and spinnability was analyzed in terms of its zero-shear viscosity, shear-thinning behavior, relaxation time, and structural viscosity. The dynamic rheological behavior of the precursors was tested, and the viscoelastic and flow processing performance and their influence on the fiber morphology were analyzed in terms of structural strength , linear viscoelastic zone limit, and sol-gel transition point . The appropriate configuration parameters of the precursor and electrospinning process parameters were quantitatively deduced through the above analysis and further verified by electrospinning test and the fiber SEM images. The results showed that rheological analysis can be used as a theoretical basis to predict the spinnability of BLF-based precursors and to optimize its electrospinning process, which can guide the regulation of new biomass-derived electrospun fiber structures and improve the fiber quality.
研究领域:
材料科学
·
生物学
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高影响因子
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