The Experts below are selected from a list of 189 Experts worldwide ranked by ideXlab platform

Yuping Wu - One of the best experts on this subject based on the ideXlab platform.

  • a composite gel polymer electrolyte with high performance based on poly vinylidene fluoride and polyborate for lithium ion batteries
    Advanced Energy Materials, 2014
    Co-Authors: Shiying Xiao, Yaqiong Yang, Yuping Wu
    Abstract:

    A composite membrane based on electrospun poly(vinylidene fluoride) (PVDF) and lithium polyvinyl alcohol oxalate borate (LiPVAOB) exhibiting high safety (self-extinguishing) and Good Mechanical Property is prepared. The ionic conductivity of the as-prepared gel polymer electrolyte from this composite membrane saturated with 1 mol L−1 LiPF6 electrolyte at ambient temperature can be up to 0.26 mS cm−1, higher than that of the corresponding well-used commercial separator (Celgard 2730), 0.21 mS cm−1. Moreover, the lithium ion transference in the gel polymer electrolyte at room temperature is 0.58, twice as that in the commercial separator (0.27). Furthermore, the absorbed electrolyte solvent is difficult to evaporate at elevated temperature. Its electrochemical performance is evaluated by using LiFePO4 cathode. The obtained results suggest that this gel-type composite membrane shows great possibilities for use in large-capacity lithium ion batteries that require high safety.

  • a trilayer poly vinylidene fluoride polyborate poly vinylidene fluoride gel polymer electrolyte with Good performance for lithium ion batteries
    Journal of Materials Chemistry, 2013
    Co-Authors: Shiying Xiao, Yaqiong Yang, Yuping Wu
    Abstract:

    A composite membrane based on poly(vinylidene fluoride) (PVDF) and lithium polyacrylic acid oxalate borate (LiPAAOB) exhibiting high safety (self-extinguishing) and Good Mechanical Property was prepared. The ionic conductivity of the gel polymer electrolyte (GPE) by saturating with 1 mol L−1 LiPF6 electrolyte at ambient temperature can be up to 0.35 mS cm−1, higher than that of the well-used commercial separator (Celgard 2730), 0.21 mS cm−1. The lithium ion transference in the GPE at room temperature is 0.58, twice that in the commercial separator (0.27). Moreover, the GPE presents a true shut-down behavior, which is quite different from the not-real shut-down behaviour of the commercial separators. Furthermore, the absorbed electrolyte solvent is difficult to evaporate at elevated temperature. Its electrochemical performance is evaluated by using LiFePO4 cathode. The obtained results suggest that this composite GPE is very attractive to large-capacity battery systems requiring high safety and low cost.

Xu Chen - One of the best experts on this subject based on the ideXlab platform.

  • porous polymer electrolytes with high ionic conductivity and Good Mechanical Property for rechargeable batteries
    Journal of Power Sources, 2016
    Co-Authors: Bo Liang, Qingbai Jiang, Siqi Tang, Shengliang Li, Xu Chen
    Abstract:

    Abstract Porous polymer electrolytes (PPEs) are attractive for developing lithium-ion batteries because of the combined advantages of liquid and solid polymer electrolytes. In the present study, a new porous polymer membrane doped with phytic acid (PA) is prepared, which is used as a crosslinker in polymer electrolyte matrix and can also plasticize porous polymer electrolyte membranes, changing them into soft tough flexible materials. A PEO–PMMA–LiClO 4 –x wt.% PA (x = weight of PA/weight of polymer, PEO: poly(ethylene oxide); PMMA: poly(methyl methacrylate)) polymer membrane is prepared by a simple evaporation method. The effects of the ratio of PA to PEO–PMMA on the properties of the porous membrane, including morphology, porous structure, and Mechanical Property, are systematically studied. PA improves the porous structure and Mechanical properties of polymer membrane. The maximum tensile strength and elongation of the porous polymer membranes are 20.71 MPa and 45.7% at 15 wt.% PA, respectively. Moreover, the PPEs with 15 wt.% PA has a conductivity of 1.59 × 10 −5  S/cm at 20 °C, a Good electrochemical window (>5 V), and a low interfacial resistance. The results demonstrate the compatibility of the Mechanical properties and conductivity of the PPEs, indicating that PPEs have Good application prospects for lithium-ion batteries.

Shiying Xiao - One of the best experts on this subject based on the ideXlab platform.

  • a composite gel polymer electrolyte with high performance based on poly vinylidene fluoride and polyborate for lithium ion batteries
    Advanced Energy Materials, 2014
    Co-Authors: Shiying Xiao, Yaqiong Yang, Yuping Wu
    Abstract:

    A composite membrane based on electrospun poly(vinylidene fluoride) (PVDF) and lithium polyvinyl alcohol oxalate borate (LiPVAOB) exhibiting high safety (self-extinguishing) and Good Mechanical Property is prepared. The ionic conductivity of the as-prepared gel polymer electrolyte from this composite membrane saturated with 1 mol L−1 LiPF6 electrolyte at ambient temperature can be up to 0.26 mS cm−1, higher than that of the corresponding well-used commercial separator (Celgard 2730), 0.21 mS cm−1. Moreover, the lithium ion transference in the gel polymer electrolyte at room temperature is 0.58, twice as that in the commercial separator (0.27). Furthermore, the absorbed electrolyte solvent is difficult to evaporate at elevated temperature. Its electrochemical performance is evaluated by using LiFePO4 cathode. The obtained results suggest that this gel-type composite membrane shows great possibilities for use in large-capacity lithium ion batteries that require high safety.

  • a trilayer poly vinylidene fluoride polyborate poly vinylidene fluoride gel polymer electrolyte with Good performance for lithium ion batteries
    Journal of Materials Chemistry, 2013
    Co-Authors: Shiying Xiao, Yaqiong Yang, Yuping Wu
    Abstract:

    A composite membrane based on poly(vinylidene fluoride) (PVDF) and lithium polyacrylic acid oxalate borate (LiPAAOB) exhibiting high safety (self-extinguishing) and Good Mechanical Property was prepared. The ionic conductivity of the gel polymer electrolyte (GPE) by saturating with 1 mol L−1 LiPF6 electrolyte at ambient temperature can be up to 0.35 mS cm−1, higher than that of the well-used commercial separator (Celgard 2730), 0.21 mS cm−1. The lithium ion transference in the GPE at room temperature is 0.58, twice that in the commercial separator (0.27). Moreover, the GPE presents a true shut-down behavior, which is quite different from the not-real shut-down behaviour of the commercial separators. Furthermore, the absorbed electrolyte solvent is difficult to evaporate at elevated temperature. Its electrochemical performance is evaluated by using LiFePO4 cathode. The obtained results suggest that this composite GPE is very attractive to large-capacity battery systems requiring high safety and low cost.

Bo Liang - One of the best experts on this subject based on the ideXlab platform.

  • porous polymer electrolytes with high ionic conductivity and Good Mechanical Property for rechargeable batteries
    Journal of Power Sources, 2016
    Co-Authors: Bo Liang, Qingbai Jiang, Siqi Tang, Shengliang Li, Xu Chen
    Abstract:

    Abstract Porous polymer electrolytes (PPEs) are attractive for developing lithium-ion batteries because of the combined advantages of liquid and solid polymer electrolytes. In the present study, a new porous polymer membrane doped with phytic acid (PA) is prepared, which is used as a crosslinker in polymer electrolyte matrix and can also plasticize porous polymer electrolyte membranes, changing them into soft tough flexible materials. A PEO–PMMA–LiClO 4 –x wt.% PA (x = weight of PA/weight of polymer, PEO: poly(ethylene oxide); PMMA: poly(methyl methacrylate)) polymer membrane is prepared by a simple evaporation method. The effects of the ratio of PA to PEO–PMMA on the properties of the porous membrane, including morphology, porous structure, and Mechanical Property, are systematically studied. PA improves the porous structure and Mechanical properties of polymer membrane. The maximum tensile strength and elongation of the porous polymer membranes are 20.71 MPa and 45.7% at 15 wt.% PA, respectively. Moreover, the PPEs with 15 wt.% PA has a conductivity of 1.59 × 10 −5  S/cm at 20 °C, a Good electrochemical window (>5 V), and a low interfacial resistance. The results demonstrate the compatibility of the Mechanical properties and conductivity of the PPEs, indicating that PPEs have Good application prospects for lithium-ion batteries.

Yaqiong Yang - One of the best experts on this subject based on the ideXlab platform.

  • a composite gel polymer electrolyte with high performance based on poly vinylidene fluoride and polyborate for lithium ion batteries
    Advanced Energy Materials, 2014
    Co-Authors: Shiying Xiao, Yaqiong Yang, Yuping Wu
    Abstract:

    A composite membrane based on electrospun poly(vinylidene fluoride) (PVDF) and lithium polyvinyl alcohol oxalate borate (LiPVAOB) exhibiting high safety (self-extinguishing) and Good Mechanical Property is prepared. The ionic conductivity of the as-prepared gel polymer electrolyte from this composite membrane saturated with 1 mol L−1 LiPF6 electrolyte at ambient temperature can be up to 0.26 mS cm−1, higher than that of the corresponding well-used commercial separator (Celgard 2730), 0.21 mS cm−1. Moreover, the lithium ion transference in the gel polymer electrolyte at room temperature is 0.58, twice as that in the commercial separator (0.27). Furthermore, the absorbed electrolyte solvent is difficult to evaporate at elevated temperature. Its electrochemical performance is evaluated by using LiFePO4 cathode. The obtained results suggest that this gel-type composite membrane shows great possibilities for use in large-capacity lithium ion batteries that require high safety.

  • a trilayer poly vinylidene fluoride polyborate poly vinylidene fluoride gel polymer electrolyte with Good performance for lithium ion batteries
    Journal of Materials Chemistry, 2013
    Co-Authors: Shiying Xiao, Yaqiong Yang, Yuping Wu
    Abstract:

    A composite membrane based on poly(vinylidene fluoride) (PVDF) and lithium polyacrylic acid oxalate borate (LiPAAOB) exhibiting high safety (self-extinguishing) and Good Mechanical Property was prepared. The ionic conductivity of the gel polymer electrolyte (GPE) by saturating with 1 mol L−1 LiPF6 electrolyte at ambient temperature can be up to 0.35 mS cm−1, higher than that of the well-used commercial separator (Celgard 2730), 0.21 mS cm−1. The lithium ion transference in the GPE at room temperature is 0.58, twice that in the commercial separator (0.27). Moreover, the GPE presents a true shut-down behavior, which is quite different from the not-real shut-down behaviour of the commercial separators. Furthermore, the absorbed electrolyte solvent is difficult to evaporate at elevated temperature. Its electrochemical performance is evaluated by using LiFePO4 cathode. The obtained results suggest that this composite GPE is very attractive to large-capacity battery systems requiring high safety and low cost.