Energetic Metal–Organic Frameworks Derived Highly Nitrogen-Doped Porous Carbon for Superior Potassium Storage

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Huigang Tong
  • Changlai Wang
  • Jian Lu
  • Shi Chen
  • Kang Yang
  • And 3 others
  • Minxue Huang
  • Qing Yuan
  • Qianwang Chen

Detail(s)

Original languageEnglish
Article number2002771
Journal / PublicationSmall
Volume16
Issue number43
Online published4 Oct 2020
Publication statusPublished - 27 Oct 2020

Abstract

The carbonaceous materials with low cost and high safety have been considered as promising anodes for potassium-ion batteries (PIBs). However, it is still a challenge to design a carbonaceous material with long cycle life and high rate performance due to the poor K+ reaction kinetics. Herein, this article reports a N-doped porous carbon framework (NPCF) with a high nitrogen content of 13.57 at% within high doping level of the pyrrolic N and pyridinic N, which exhibits a high reversible capacity of 327 mA h g−1 over 100 cycles at a current density of 100 mA g−1, excellent rate capability (144 and 105 mA h g−1 at 10 and 20 A g−1, respectively) and great cyclability of 258.9 mA h g−1 after 2000 cycles at 1 A g−1. Such a high rate performance and excellent cycling stability anode material is seldom reported in PIBs. Density functional theory (DFT) calculations reveal that the pyrrolic and pyridinic N-doping are helpful to enhance the K adsorption ability, thereby increasing the specific capacity.

Research Area(s)

  • energetic metal–organic frameworks, N-doped porous carbon frameworks, potassium-ion batteries, pyridinic N, pyrrolic N

Citation Format(s)

Energetic Metal–Organic Frameworks Derived Highly Nitrogen-Doped Porous Carbon for Superior Potassium Storage. / Tong, Huigang; Wang, Changlai; Lu, Jian; Chen, Shi; Yang, Kang; Huang, Minxue; Yuan, Qing; Chen, Qianwang.

In: Small, Vol. 16, No. 43, 2002771, 27.10.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review