Building a high-performance organic cathode material containing electron-withdrawing groups for lithium-ion batteries

09 September 2022, Version 1
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

Abstract: The capacity of cathode materials is one of the main factors to limit the performance of lithium-ion batteries (LIBs), so it is urgent to develop high-performance cathode materials. Herein, trinitrohexaazatrinaphthalene (TNHATN) including an electron-withdrawing group (nitro, -NO2) was synthesized by the condensation reaction between hexaketocyclohexane and 4-nitro-o-phenylenediamine, and it was first investigated as a cathode material for lithium-ion batteries. The TNHATN electrode displays a high discharge specific capacity of 361.7 mAh g-1 at 0.05 A g-1 and a superior cycling stability, remaining the capacity retention of 97.9 % after 200 cycles. The excellent behaviors may be ascribed to its π-conjugated structure including electron-withdrawing groups and multiple redox active sites. The experimental resultes reveal the redox active sites are pyrazine nitrogen atoms and oxygen atoms from nitrio groups. This work confirms that it is an effective route to introduce an electron-withdrawing group into a π-conjugated compound for obtaining high-performance organic cathode materials of LIBs.

Keywords

lithium-ion batteries
organic cathode materials
trinitrohexaazanaphthalene
electron-withdrawing group

Supplementary materials

Title
Description
Actions
Title
Building a high-performance organic cathode material containing electron-withdrawing groups for lithium-ion batteries
Description
Supplementary materials of the article
Actions

Comments

Comments are not moderated before they are posted, but they can be removed by the site moderators if they are found to be in contravention of our Commenting Policy [opens in a new tab] - please read this policy before you post. Comments should be used for scholarly discussion of the content in question. You can find more information about how to use the commenting feature here [opens in a new tab] .
This site is protected by reCAPTCHA and the Google Privacy Policy [opens in a new tab] and Terms of Service [opens in a new tab] apply.