In-situ Formation of Radical/p-Conjugated Polymer Blends for Rapid Charge-Storage

2014 Fiscal Year Final Research Report

• Project/Area Number: 25620179
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Polymer/Textile materials
• Research Institution: Waseda University
• Principal Investigator: NISHIDE Hiroyuki 早稲田大学, 理工学術院, 教授 (90120930)
• Co-Investigator(Kenkyū-buntansha): SUGA Takeo 早稲田大学, 高等研究所, 助教 (10409659)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 気相重合 / 導電性高分子 / ラジカル / 二次電池 / 電極活物質 / 電荷貯蔵 / 電荷輸送 / 複合材料

Outline of Final Research Achievements

We proposed the combination of "charge-storage" based on redox reaction of durable organic radicals (SOMO) and "charge-conduction" through π-conjugation (HOMO-LUMO) to yield new energy-storage materials. Especially, we focused on vapor-phase oxidative polymerization (VPP) as a facile method for in-situ preparation of π-conjugated polymers. Prior to VPP process, chemical oxidants such as Fe(OTs)3 were mixed with nitroxide radical polymers to convert the corresponding oxoammonium salts, to suppress the radical inhibition of oxidative polymerization of EDOT. The obtained p- and n-type radical polymers/PEDOT blend was utilized as cathode- and anode-active materials, respectively, leading to the metal-free, wearable rechargeable battery. In-situ VPP method using oxidant vapors such as iodine also produced organic donor layer toward organic solar cells.

Free Research Field

高分子化学