𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Syntheses and Electrochemical Properties of TEMPO Radical Substituted Silicones: Active Material for Organic Radical Batteries

✍ Scribed by Masahiro Suguro; Atsunori Mori; Shigeyuki Iwasa; Kentaro Nakahara; Kaichiro Nakano

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
283 KB
Volume
210
Category
Article
ISSN
1022-1352

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A silicone‐based radical polymer 2 was synthesized by hydrosilylation of PMHS with 4‐allyl‐2,2,6,6‐tetramethylpiperidine‐N‐oxyl ether 1 in the presence of a platinum‐ or rhodium‐catalyst. A reversible redox peak of 2 at 3.56 V (vs. Li/Li^+^) was observed by CV measurements. A coin‐shaped cell of 2 shows a discharge capacity of 46 mAh · g^−1^, which is 47% of the theoretical capacity of 2 (98 mAh · g^−1^). A directly TEMPO‐substituted silicone, poly[methyl(2,2,6,6‐tetramethylpiperidine‐N‐oxyl‐4‐oxyl)siloxane] 3 was also obtained by rhodium‐catalyzed dehydrogenative alcoholysis of PMHS with TEMPO‐OH. The coin‐shaped cell of 3 shows a discharge capacity of 80 mAh · g^−1^, which is 69% of the theoretical capacity of 3 (116 mAh · g^−1^).

magnified image

📜 SIMILAR VOLUMES

Cationic Polymerization of Poly(vinyl et
Cationic Polymerization of Poly(vinyl ether) Bearing a TEMPO Radical: A New Cathode-Active Material for Organic Radical Batteries
✍ Masahiro Suguro; Shigeyuki Iwasa; Yuki Kusachi; Yukiko Morioka; Kentaro Nakahara 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 147 KB

## Abstract PTVE was synthesized as a new active material for organic radical batteries. Cationic polymerization of a monomer bearing a TEMPO radical moiety took place. The spin concentration of PTVE was estimated to be 2.75 × 10^21^ spins · g^−1^ (100% spin per repeating unit). The PTVE is extreme