三苯胺
电化学
共价有机骨架
电池(电)
分子内力
阴极
有机太阳能电池
材料科学
化学工程
共价键
储能
纳米技术
多孔性
化学
电极
光电子学
有机化学
物理化学
复合材料
功率(物理)
工程类
聚合物
物理
量子力学
作者
Jiangquan Lv,Yan‐Xi Tan,Jiafang Xie,Rui Yang,Muxin Yu,Shanshan Sun,Ming‐De Li,Daqiang Yuan,Yaobing Wang
标识
DOI:10.1002/anie.201806596
摘要
A covalent organic framework integrating naphthalenediimide and triphenylamine units (NT-COF) is presented. Two-dimensional porous nanosheets are packed with a high specific surface area of 1276 m2 g-1 . Photo/electrochemical measurements reveal the ultrahigh efficient intramolecular charge transfer from the TPA to the NDI and the highly reversible electrochemical reaction in NT-COF. There is a synergetic effect in NT-COF between the reversible electrochemical reaction and intramolecular charge transfer with enhanced solar energy efficiency and an accelerated electrochemical reaction. This synergetic mechanism provides the key basis for direct solar-to-electrochemical energy conversion/storage. With the NT-COF as the cathode materials, a solar Li-ion battery is realized with decreased charge voltage (by 0.5 V), increased discharge voltage (by 0.5 V), and extra 38.7 % battery efficiency.
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