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author:

Zou, J. (Zou, J..) [1] | He, C. (He, C..) [2] | Bao, J. (Bao, J..) [3] | Sun, C.-F. (Sun, C.-F..) [4] | Li, Y. (Li, Y..) [5]

Indexed by:

Scopus

Abstract:

Hard carbon (HC), composed of disorder graphite domain construction, provides defects, gaps, and nanopores that are beneficial for storing K-ion. In this work, hard carbon derived from spent black tea (THC) is synthesized through a two-step carbonization process. THC is an easy preparation, green, and high-abundance carbon material for highly stable potassium-ion storage. As an anode for potassium-ion batteries, it delivers a high capacity of 203 mA h g−1 at 30 mA g−1 and long-term cycling life with 90% capacity retention over 3.6 months. This superior cycle life is attributed to the highly reversible structure, rapid ion diffusion rate, and charge transfer rate of THC. Not only that, a full cell was assembled with THC as the anode and perylene 3,4,9,10-tetracarboxylic dianhydride (PTCDA) as the cathode. The PTCDA//THC delivers a high capacity of 48.6 mA h g−1 and an energy density of 107 W h kg−1 at 100 mA g−1. These findings suggest that THC has considerable promise as a low-cost, high-stability anode material for potassium-ion batteries. © 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

Keyword:

Anode material Hard carbon High-stability Potassium-ion batteries Spent black tea

Community:

  • [ 1 ] [Zou J.]College of Chemistry, Fuzhou University, Fujian, Fuzhou, 350108, China
  • [ 2 ] [Zou J.]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, and State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 3 ] [He C.]College of Chemistry, Fuzhou University, Fujian, Fuzhou, 350108, China
  • [ 4 ] [He C.]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, and State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 5 ] [Bao J.]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, and State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 6 ] [Sun C.-F.]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, and State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 7 ] [Li Y.]College of Chemistry, Fuzhou University, Fujian, Fuzhou, 350108, China
  • [ 8 ] [Li Y.]Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, Fuzhou University, Fujian, Fuzhou, 350002, China

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Source :

Ionics

ISSN: 0947-7047

Year: 2023

Issue: 9

Volume: 29

Page: 3517-3523

2 . 4

JCR@2023

2 . 4 0 0

JCR@2023

ESI HC Threshold:30

JCR Journal Grade:3

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 2

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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