Pyrolyzing soft template-containing poly(ionic liquid) into hierarchical N-doped porous carbon for electroreduction of carbon dioxide

Mingdong Sun; Zhengyun Bian; Weiwei Cui; Xiaolong Zhao; Shu Dong; Xuebin Ke; Yu Zhou; Jun Wang

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Pyrolyzing soft template-containing poly(ionic liquid) into hierarchical N-doped porous carbon for electroreduction of carbon dioxide

Updated：2026-01-06

- Pyrolyzing soft template-containing poly(ionic liquid) into hierarchical N-doped porous carbon for electroreduction of carbon dioxide
- Chinese Journal of Chemical Engineering Vol. 43, Issue 3, Pages: 192-201(2022)
- Affiliations：
  
  1. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University,Nanjing,China,210009
  2. Department of Chemical Engineering, University of Hull, Hull HU6 7RX, United Kingdom
- Author bio：
- Funds：
- DOI：
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- Published：2022
- Accepted：
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Mingdong Sun, Zhengyun Bian, Weiwei Cui, Xiaolong Zhao, Shu Dong, Xuebin Ke, Yu Zhou, Jun Wang. Pyrolyzing soft template-containing poly(ionic liquid) into hierarchical N-doped porous carbon for electroreduction of carbon dioxide[J]. Chinese Journal of Chemical Engineering, 2022, 43(3): 192-201.
DOI：

Mingdong Sun, Zhengyun Bian, Weiwei Cui, Xiaolong Zhao, Shu Dong, Xuebin Ke, Yu Zhou, Jun Wang. Pyrolyzing soft template-containing poly(ionic liquid) into hierarchical N-doped porous carbon for electroreduction of carbon dioxide[J]. Chinese Journal of Chemical Engineering, 2022, 43(3): 192-201. DOI：

摘要

Abstract

Heteroatom-doped carbon materials have demonstrated great potential in the electrochemical reduction reaction of CO

(CO

RR) due to their versatile structure and function. However

rational structure control remains one challenge. In this work

we reported a unique carbon precursor of soft template-containing porous poly(ionic liquid) (PIL) that was directly synthesized

via

free-radical self-polymerization of ionic liquid monomer in a soft template route. Variation of the carbonization temperature in a direct pyrolysis process without any additive yielded a series of carbon materials with facile adjustable textural properties and N species. Significantly

the integration of soft-template in the PIL precursor led to the formation of hierarchical porous carbon material with a higher surface area and larger pore size than that from the template-free precursor. In CO

RR to CO

the champion catalyst gave a Faraday efficiency of 83.0% and a current density of 1.79 mA·cm

-2

at -0.9 V

vs.

reversible hydrogen electrode (

vs.

RHE). The abundant graphite N species and hierarchical pore structure

especially the unique hierarchical small-/ultra-micropores were revealed to enable better CO

RR performance.

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