Poly(vinylidene fluoride-hexafluoroprolene) (P(VDF-HFP))-based composite polymer electrolyte (CPE) membranes doped with organic-inorganic hybrid particles poly(methyl methacrylate)

ZrO₂ (PMMA-ZrO₂) are fabricated by phase inversion, in which PMMA is firstly successfully grafted onto the surface of the homemade nano-ZrO₂ particles via in situ polymerization confirmed by FT-IR. XRD and DSC patterns show that adding PMMA-ZrO₂ into the polymer matrix can decrease the crystallinity of the CPE membranes and TG curves indicate the CPE membranes possess desirable thermal stability. It can be found that the CPE membrane presents a uniform surface with abundant interconnected micro-pores when the added amount of PMMA-ZrO₂ increases to 5 wt % vs. polymer matrix, in which the ionic conductivity at room temperature and tensile strength can be up to 3.595 mS cm⁻¹ and 26.18 MPa, respectively. In particular, the CPE membrane shows the minimum deformation of about 8% after being exposed at 160 °C for 1 h, and the electrochemical working window of the assembled Li/CPE/SS cell can be stable at 5.1 V (vs Li/Li⁺) at room temperature. Moreover, the LiCoO₂/CPE/Li coin cell can deliver a specific capacity of 114.5 mAh g⁻¹ with 79.13% capacity retention at 2.0 C after 110 cycles. The results suggest that the as-fabricated P(VDF-HFP)-based CPE doped with 5 wt % organic-inorganic hybrid particles PMMA-ZrO₂ can be a promising polymer electrolyte for lithium ion batteries.

中文翻译：

---

不同含量的有机-无机杂化颗粒聚甲基丙烯酸甲酯的影响ZrO ₂对聚偏二氟乙烯-六氟脯氨酸基复合凝胶聚合物电解质性能的影响

掺杂有有机-无机杂化颗粒聚甲基丙烯酸甲酯的基于聚偏二氟乙烯-六氟丙烯（P（VDF-HFP））的复合聚合物电解质（CPE）膜

通过相转化制备ZrO ₂（PMMA-ZrO ₂），其中首先通过FT-IR证实原位聚合成功地将PMMA接枝到自制纳米ZrO ₂颗粒的表面上。XRD和DSC图谱表明，在聚合物基体中加入PMMA-ZrO ₂会降低CPE膜的结晶度，TG曲线表明CPE膜具有理想的热稳定性。可以发现的是，CPE膜呈现均匀的表面具有丰富的互连微孔的时PMMA-的ZrO添加量_2个增加至5 重量％VS。聚合物基质，其中室温下的离子电导率和拉伸强度分别可以高达3.595 mS cm ^-1和26.18 MPa。特别是，CPE膜在160°C下暴露1 h后显示出约8％的最小变形，并且组装好的Li / CPE / SS电池的电化学工作窗口可以在5.1 V时稳定（vs Li / Li ⁺）在室温下。此外，LiCoO ₂ / CPE / Li纽扣电池在110个循环后，在2.0 C时可提供114.5 mAh g ^-1的比容量，并具有79.13％的容量保持率 。结果表明，掺有5 wt％有机-无机杂化颗粒PMMA-ZrO的P（VDF-HFP）基CPE ₂可以成为锂离子电池的有前途的聚合物电解质。