TEMPO‐Substituted Poly(ethylene sulfide) for Solid‐State Electro‐Chemical Charge Storage
TEMPO‐Substituted Poly(ethylene sulfide) for Solid‐State Electro‐Chemical Charge Storage
复制标题
用于固态电化学电荷存储的 TEMPO 取代聚硫醚
DOI：
10.1002/marc.202000607
复制
发表时间：
2021
影响因子：
4.6
通讯作者：
Oyaizu Kenichi
中科院分区：
文献类型：
--
作者：
Hatakeyama‐Sato Kan;Wakamatsu Hisato;Matsumoto Satoshi;Sadakuni Karin;Matsuoka Koji;Nagatsuka Tomomi;Oyaizu Kenichi
引入聚乙二硫醚主链作为自由基聚合物的主链。以2，2，6，6-四甲基哌啶-1-氧基(TEMPO)取代的环硫化物单体的阴离子开环聚合反应生成相应的聚硫醚。与传统的聚环氧乙烷主链相比，新型聚合物的玻璃化转变温度(−10°C)更低，固态离子电导率提高了约3倍。聚硫醚还改善了固态锂离子电池正极的充放电性能。
A poly(ethylene sulfide) backbone is introduced as the main chain of a radical polymer. Anionic ring‐opening polymerization of an episulfide monomer substituted with 2,2,6,6tetramethylpiperidin1oxyl (TEMPO), a robust nitroxide radical, yields the corresponding polythioether. Compared to the traditional poly(ethylene oxide) backbone, the new polymer shows a lower glass transition temperature (−10 °C), and about threefold higher solid‐state ionic conductivity. The polythioether is also shown to improve the charge/discharge properties of a cathode in solid‐state lithium‐ion batteries.