A Tetrakis(terpyridine) Ligand-Based Cobalt(II) Complex Nanosheet as a Stable Dual-Ion Battery Cathode Material.,Small

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A Tetrakis(terpyridine) Ligand-Based Cobalt(II) Complex Nanosheet as a Stable Dual-Ion Battery Cathode Material.
Small ( IF 13.0 ) Pub Date : 2020-03-12 , DOI: 10.1002/smll.201905204
Yurong Liu _{1,

2,

3} , Wenwen Deng ₂ , Zhengong Meng ₃ , Wai-Yeung Wong _{1,

2,

3,

4}

Affiliation

Inspired by the flexibility of the bottom-up approach in terms of selecting molecular components and thus tailoring functionalities, a terpyridine derivative (1,2,4,5-tetrakis(4-(2,2':6',2″-terpyridyl)phenyl)benzene) (Tetra-tpy) is synthesized and coordinated with Co(II) ion to self-assemble into a nanosheet Co-sheet by a facile interface-assisted synthesis. The bis(terpyridine)-Co(II) complex nanosheet formed not only shows good stability, but also features the layered structure and rich electrochemical activity inherited from the embedded Co(terpyridine)2 motif. Thus, Co-sheet can serve as a cathode material for a dual-ion battery prototype, which exhibits a high utilization of redox-active sites, good cycling stability, and rate capability, thus expanding the potential application of this kind of easily prepared metal-complex nanosheets in the field of energy storage.

中文翻译：

四（叔吡啶）配体基钴（II）复合纳米片作为稳定的双离子电池阴极材料。

受自下而上方法在选择分子成分并因此定制功能方面的灵活性的启发，三联吡啶衍生物（1,2,4,5-四（4-（2,2'：6'，2''-叔吡啶基）苯基）苯）（四联）合成并与Co（II）离子配位，通过便捷的界面辅助合成自组装成纳米片Co-片。形成的双（叔吡啶）-Co（II）复合纳米片不仅显示出良好的稳定性，而且还具有从嵌入的Co（terpyridine）2基序继承的分层结构和丰富的电化学活性。因此，Co-sheet可以用作双离子电池原型的阴极材料，该原型具有较高的氧化还原活性位点利用率，良好的循环稳定性和倍率性能，

更新日期：2020-04-22

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