A PROXYL-Type Norbornene Polymer for High-Voltage Cathodes in Lithium Batteries
A PROXYL-Type Norbornene Polymer for High-Voltage Cathodes in Lithium Batteries
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DOI：
10.1002/marc.202100374
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发表时间：
2021-08-07
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;Matsumoto, Satoshi;Oyaizu, Kenichi
一种新设计的自由基聚合物，具有聚苯乙烯主链和四甲基吡咯烷1-氧基（PROXYL）的不饱和衍生物作为侧基，在3.75 V（相对于Li/Li+）下显示可逆氧化还原。坚固的聚合物设计可实现高电压，同时保持良好的循环性能（超过1000次循环）。该聚合物还有益于作为常规磷酸铁锂电极的添加剂，其中快速响应的有机材料催化促进充电反应。
A newly designed radical polymer with a polynorbornene backbone and unsaturated derivative of tetramethylpyrrolidine 1-oxyl (PROXYL) as pendant groups displays reversible redox at 3.75 V (vs Li/Li+). The robust polymer design enables the high voltage while maintaining a promising cyclability (over 1000 cycles). The polymer is also beneficial as an additive to the regular lithium iron phosphate electrodes, where the quickly responding organic material facilitates the charging reactions catalytically.