Mellitic Triimides Showing Three One‐Electron Redox Reactions with Increased Redox Potential as New Electrode Materials for Li‐Ion Batteries
作者:Dong Joo Min、Kyunam Lee、Soo Young Park、Ji Eon Kwon
DOI:10.1002/cssc.202000180
日期:2020.5.8
electron-withdrawing effect. A model compound, ethyl-substituted mellitic triimide (ETTI), shows three well distinguished and reversible one-electron redoxreactions at -0.97, -1.62, and -2.34 V versus Ag/Ag+ in 0.1 m tetrabutylammonium hexafluorophosphate electrolyte, but the redox potentials were increased in 2 m lithium bis(trifluoromethanesulfonyl)imide electrolyte: -0.60 V, -0.86 V, and -1.42 V vs. Ag/Ag+ . The
提出了在具有C3对称性的苯核上带有三个酰亚胺基团的三苯甲基三酰亚胺(MTI),作为锂离子电池中有机电极材料的新组成部分。与带有两个酰亚胺基团的均苯四酸二酰亚胺结构单元相比,预计MTI可以提供更高的理论比容量,最高可达282 mAh g-1,并且还原电位更高,因为额外的酰亚胺基团可以接受一个以上的电子并提供一个电子-撤药效果。在0.1 m的四丁基铵六氟磷酸盐电解质中,模型化合物乙基取代的苯三甲酰亚胺(ETTI)在相对于Ag / Ag +的-0.97,-1.62和-2.34 V处显示三个可分辨且可逆的单电子氧化还原反应,但氧化还原电位在2 m双(三氟甲磺酰基)酰亚胺锂电解液中的碳原子数-0。相对于Ag / Ag +为60 V,-0.86 V和-1.42 V. DFT计算表明,独特的C3对称结构设计通过与锂离子和相邻酰亚胺基团中的两个羰基氧原子形成稳定的7元环,导致锂基电解质中MTI的还原电位更
N-TYPE SEMICONDUCTOR, AND ORGANIC PHOTOELECTRIC DEVICE, IMAGE SENSOR, AND ELECTRONIC DEVICE INCLUDING THE SAME
申请人:Samsung Electronics Co., Ltd.
公开号:US20210143338A1
公开(公告)日:2021-05-13
Disclosed are an n-type semiconductor including compound represented by Chemical Formula 1 or Chemical Formula 2, an image sensor, and an electronic device.
In Chemical Formula 1 and Chemical Formula 2, each substituent is as defined in the detailed description.
作者:Kathryn G. Rose、Dina A. Jaber、Chenaimwoyo A. Gondo、Darren G. Hamilton
DOI:10.1021/jo800185v
日期:2008.5.1
salts obtained from treatment of mellitic acid with 3 equiv of a primary amine yields trisubstituted mellitictriimides via dehydration and imide ring closure. This surprisingly simple synthetic approach is amenable to incorporation of alkyl, aryl, and amino acid ester substituents, thereby opening broad access to a family of C3-symmetric organic electron acceptors.
Extending π‐Conjugation and Integrating Multi‐Redox Centers into One Molecule for High‐Capacity Organic Cathodes
作者:Zhaolei Wang、Qiaoyan Qi、Weize Jin、Xin Zhao、Xiaoyu Huang、Yongjun Li
DOI:10.1002/cssc.202101324
日期:2021.9.20
eco-friendliness make organicelectrodematerials appealing for next-generation rechargeable batteries. However, most of them show low specific capacity and poor cycling stability, which limit their further application. To develop high-capacity imide-based cathode materials, three C3-symmetric triimides were designed. Systematic comparisons of these triimides as cathode materials revealed that extending
结构多样性、可设计性和环保性使有机电极材料对下一代可充电电池具有吸引力。然而,它们中的大多数表现出低比容量和较差的循环稳定性,这限制了它们的进一步应用。开发高容量酰亚胺基正极材料,三C 3设计了对称的三酰亚胺。将这些三酰亚胺作为正极材料的系统比较表明,扩展 π 共轭和结合多个氧化还原中心可提高电池在比容量和循环稳定性方面的性能。特别是,具有多个活性位点(酰亚胺和吡嗪)的富氮杂芳族六氮杂三亚萘基三亚胺(HATNTI-Pr)表现出高比容量。与石墨烯片混合后,基于 HATNTI-Pr 的无粘合剂正极具有高实用容量(0.1 C 时为317 mAh g -1)、优异的循环稳定性(100 次循环后保留 80%)和可观的倍率性能(75 mAh g -1在 5°C)。HATNTI-Pr 最多九个 Li + 的储能机制 存储能力进行了调查。