High Capacity and Energy Density Organic LIB Based on Buckypaper with Stable π‐Radical
High Capacity and Energy Density Organic LIB Based on Buckypaper with Stable π‐Radical
复制标题
基于具有稳定π自由基的巴基纸的高容量和能量密度有机锂离子电池
作者：
Ito;H.; Murata;T.; Fujisaki;M.; Tsuji;R.; Morita;Y.
由于对高性能和无稀有金属储能系统的需求不断增加，有机可充电电池引起了人们的广泛关注。为了增加整个电池的容量，我们制造了由三氧代三角烯中性自由基衍生物（H3 TOT）和单壁碳纳米管组成的硬币型巴克纸电池作为阴极，锂金属板作为阳极，没有集流体。即使在90wt%H3TOT含量下，电池也表现出稳定的充放电行为，具有源自H3 TOT的高电导率的10 C的高倍率性能。 此外，基于H3 TOT的四阶段氧化还原能力，H3 TOT 90重量%阴极显示出约260 mAh g-1的高容量和546 Wh g-1的高能量密度。 鉴于阴极的简单制造和优异的性能，基于TOT的巴克纸将为下一代储能的柔性电池开辟新的战略。
Owing to an increasing demand on high performance and rare‐metal free energy storage systems, organic rechargeable battery has attracted much attention. To increase the capacity of the whole battery, we have fabricated coin‐type buckypaper cells composed of a trioxotriangulene neutral radical derivative (H3TOT) and single‐walled carbon nanotubes as a cathode and lithium metal plate as an anode without current collector. The cells exhibited a stable charge‐discharge behavior even at a 90 wt % H3TOT content with a high‐rate performance of 10 C originating from high electrical conductivity of H3TOT. Furthermore, based on the four‐stage redox ability of H3TOT, the H3TOT 90 wt % cathode showed a high capacity of approximately 260 mAh g−1and a high energy density of 546 Wh g−1. In view of the simple fabrication of the cathode and excellent performance, TOT‐based buckypaper will open a new strategy for the flexible cells for next‐generation energy storages.