High-Temperature and High-Energy-Density Dipolar Glass Polymers Based on Sulfonylated Poly(2,6-dimethyl-1,4-phenylene oxide).
High-Temperature and High-Energy-Density Dipolar Glass Polymers Based on Sulfonylated Poly(2,6-dimethyl-1,4-phenylene oxide).
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DOI：
10.1002/anie.201710474
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发表时间：
2018-02
影响因子：
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通讯作者：
Zhongbo Zhang;David H. Wang;M. Litt;Loon-Seng Tan;Lei Zhu
中科院分区：
文献类型：
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作者：
Zhongbo Zhang;David H. Wang;M. Litt;Loon-Seng Tan;Lei Zhu
采用聚合物后官能化方法合成了一类新型的基于磺酰化聚（2，6-二甲基-1，4-苯醚）（SO2 -PPO）的高温偶极聚合物。由于高极性甲基磺酰基侧基在低于玻璃化转变温度（Tg <220 °C）下的有效旋转，这些SO2 -PPO的偶极极化增强，因此介电常数高。因此，放电能量密度高达22 J cm-3。由于其高Tg，SO2 -PPO 25样品也表现出低介电损耗。例如，耗散因子（tan δ）为0.003，并且在800 MV m-1下的放电效率为92%。因此，这些偶极玻璃聚合物在高温、高能量密度和低损耗电能存储应用中是有希望的。
A new class of high-temperature dipolar polymers based on sulfonylated poly(2,6-dimethyl-1,4-phenylene oxide) (SO2 -PPO) was synthesized by post-polymer functionalization. Owing to the efficient rotation of highly polar methylsulfonyl side groups below the glass transition temperature (Tg ≈220 °C), the dipolar polarization of these SO2 -PPOs was enhanced, and thus the dielectric constant was high. Consequently, the discharge energy density reached up to 22 J cm-3 . Owing to its high Tg , the SO2 -PPO25 sample also exhibited a low dielectric loss. For example, the dissipation factor (tan δ) was 0.003, and the discharge efficiency at 800 MV m-1 was 92 %. Therefore, these dipolar glass polymers are promising for high-temperature, high-energy-density, and low-loss electrical energy storage applications.