超支化聚三唑固态聚电解质及其锂离子和锌离子导电性

带刚性结构的超支化聚合物具有优良的溶解性，度低黏与力学性能优异，可用于制备固态电解质.含叠氮基的单体M1和含炔基的单体M2在亚铜离子Cu⁺的催化下发生叠氮-炔点击化学反应，得到超支化聚三唑hb-GPTA.该聚合物具有良好的溶解性、成膜性和热稳定性（热分解温度为350 ℃）.将该聚合物分别与三氟甲基磺酰亚胺锂 (LiTFSI)及三氟甲基磺酸锌 (Zn(OTf)₂)进行掺杂，制备固态电解质，对其电化学性能进行表征.结果表明，hb-GPTA/LiTFSI体系具有更高的电导率（32.7 μ S·cm^-1），电化学窗口为5.2 V；相比之下，hb-GPTA/Zn（OTf）₂体系电导率较低（0.42 μS·cm^-1），但其在-1~6 V电压范围内一直保持稳定.结合电化学稳定性分析结果，可以推断含三氮唑的聚合物在制作锌离子电池方面具有潜在的应用价值.

Hyperbranched Polytriazole Solid Polyelectrolyte and Its Li-Ion and Zinc-Ion Conductivity

Hyperbranched polymer with rigid structure usually have good solubility, low viscosity and outstanding mechanical properties, which could be used to prepare solid electrolyte. Hyperbranched polytriazole (hb-GPTA) was synthesized due to azide-acetylene click chemistry reaction of alkynyl-based monomer M1 and azido-contained monomer M2 with catalysis by Cu(I). The hb-GPTA exhibited good solubility, film formation property, and thermostability (the thermal decomposition temperature is 35 ℃). The hb-GPTA was doped with LiTFSI and Zn(OTf)2 respectively to prepare solid electrolytes whose electrochemical properties were characterized. The results demonstrated that LiTFSI doped polymer had higher conductivity of 3.27×10-5 S/cm and the electrochemical window is 5.2 V, while the Zn(OTf)2 doped polymer exhibited lower conductivity of 4.20×10-7 S/cm but remained stable within the voltage range of -1~ 6V. It could be inferred that polymer with triazole has potential application value in making zinc batteries together with electrochemical stability analysis.