A Truxenone-based Covalent Organic Framework as an All-Solid-State Lithium-Ion Battery Cathode with High Capacity

Xiye Yang; Yiming Hu; Nathan Dunlap; Xubo Wang; Shaofeng Huang; Zhiping Su; Sandeep Sharma; Yinghua Jin; Fei Huang; Xiaohui Wang; Se-Hee Lee; Wei Zhang

doi:10.1002/anie.202008619

A Truxenone-based Covalent Organic Framework as an All-Solid-State Lithium-Ion Battery Cathode with High Capacity

Angew Chem Int Ed Engl. 2020 Nov 9;59(46):20385-20389. doi: 10.1002/anie.202008619. Epub 2020 Sep 7.

Authors

Xiye Yang^{1

2}, Yiming Hu², Nathan Dunlap³, Xubo Wang², Shaofeng Huang², Zhiping Su¹, Sandeep Sharma², Yinghua Jin², Fei Huang¹, Xiaohui Wang¹, Se-Hee Lee³, Wei Zhang²

Affiliations

¹ State Key Laboratory of Pulp and Paper Engineering, Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China.
² Department of Chemistry, University of Colorado, Boulder, Boulder, CO, 80309, USA.
³ Department of Mechanical Engineering, University of Colorado, Boulder, Boulder, CO, 80309, USA.

PMID: 32722860
DOI: 10.1002/anie.202008619

Abstract

All-solid-state lithium ion batteries (LIBs) are ideal for energy storage given their safety and long-term stability. However, there is a limited availability of viable electrode active materials. Herein, we report a truxenone-based covalent organic framework (COF-TRO) as cathode materials for all-solid-state LIBs. The high-density carbonyl groups combined with the ordered crystalline COF structure greatly facilitate lithium ion storage via reversible redox reactions. As a result, a high specific capacity of 268 mAh g^-1 , almost 97.5 % of the calculated theoretical capacity was achieved. To the best of our knowledge, this is the highest capacity among all COF-based cathode materials for all-solid-state LIBs reported so far. Moreover, the excellent cycling stability (99.9 % capacity retention after 100 cycles at 0.1 C rate) shown by COF-TRO suggests such truxenone-based COFs have great potential in energy storage applications.

Keywords: covalent organic frameworks; high capacity; lithium-ion batteries; multiple-electron redox; truxenone.

Abstract

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