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author:

Jia, Yifan (Jia, Yifan.) [1] | Feng, Xiao (Feng, Xiao.) [2] | Liu, Xuwei (Liu, Xuwei.) [3] | Wu, Qirui (Wu, Qirui.) [4] | Chen, Yujia (Chen, Yujia.) [5] | Wu, Chuxin (Wu, Chuxin.) [6] | Guan, Lunhui (Guan, Lunhui.) [7]

Indexed by:

EI Scopus SCIE

Abstract:

The interfacial instability and poor rate performance caused by the drastic volume expansion hinder the further application of micron-silicon (mu Si) anode. To this end, this work designs a CNT/polymer conducting network (PAA-TA-CMC/CNT) that balances the dense coating effect of carbon nanotubes and high strength. In this CNT/ polymer conducting network, carboxymethyl cellulose (CMC) and carboxylated multi-walled carbon nanotubes (CNT) form a dense conductive network through self-assembly, achieving uniform coating of CNT on mu Si particles. The polymeric binder formulated from polyacrylic acid (PAA) and tannic acid (TA) leverages a range of interactions, including covalent bonds and hydrogen bonds, to not only ensure the robust attachment of the conductive coating onto mu Si but also significantly bolster the overall strength of the electrode. As anticipated, the mu Si anode, facilitated by the CNT/polymer conducting network, retains a substantial reversible capacity of 1885.4 mAh/g after undergoing 300 cycles (2 A/g) and demonstrated excellent stability even after 350 cycles at a high rate of 4 A/g. Furthermore, this CNT/polymer conducting network can also enhance the rate capability and long-cycle life of SiOx anodes (1426.3 mAh/g over 300 cycles at 2 A/g, 891.6 mAh/g over 1000 cycles at 4 A/g). This design strategy, which incorporates both dense CNT coating and high-strength conductive polymers, offers a viable approach to improving the performance of high-capacity alloy-based anode materials.

Keyword:

CNT coating layer CNT/polymer conducting network High mechanical strength Lithium-ion battery Micron-silicon anode

Community:

  • [ 1 ] [Jia, Yifan]Chinese Acad Sci, State Key Lab Struct Chem, Fujian Key Lab Nanomat, Fuzhou 350108, Fujian, Peoples R China
  • [ 2 ] [Feng, Xiao]Chinese Acad Sci, State Key Lab Struct Chem, Fujian Key Lab Nanomat, Fuzhou 350108, Fujian, Peoples R China
  • [ 3 ] [Liu, Xuwei]Chinese Acad Sci, State Key Lab Struct Chem, Fujian Key Lab Nanomat, Fuzhou 350108, Fujian, Peoples R China
  • [ 4 ] [Wu, Qirui]Chinese Acad Sci, State Key Lab Struct Chem, Fujian Key Lab Nanomat, Fuzhou 350108, Fujian, Peoples R China
  • [ 5 ] [Chen, Yujia]Chinese Acad Sci, State Key Lab Struct Chem, Fujian Key Lab Nanomat, Fuzhou 350108, Fujian, Peoples R China
  • [ 6 ] [Wu, Chuxin]Chinese Acad Sci, State Key Lab Struct Chem, Fujian Key Lab Nanomat, Fuzhou 350108, Fujian, Peoples R China
  • [ 7 ] [Guan, Lunhui]Chinese Acad Sci, State Key Lab Struct Chem, Fujian Key Lab Nanomat, Fuzhou 350108, Fujian, Peoples R China
  • [ 8 ] [Jia, Yifan]Chinese Acad Sci, Fujian Inst Res Struct Matter, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350108, Fujian, Peoples R China
  • [ 9 ] [Feng, Xiao]Chinese Acad Sci, Fujian Inst Res Struct Matter, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350108, Fujian, Peoples R China
  • [ 10 ] [Liu, Xuwei]Chinese Acad Sci, Fujian Inst Res Struct Matter, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350108, Fujian, Peoples R China
  • [ 11 ] [Wu, Qirui]Chinese Acad Sci, Fujian Inst Res Struct Matter, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350108, Fujian, Peoples R China
  • [ 12 ] [Chen, Yujia]Chinese Acad Sci, Fujian Inst Res Struct Matter, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350108, Fujian, Peoples R China
  • [ 13 ] [Wu, Chuxin]Chinese Acad Sci, Fujian Inst Res Struct Matter, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350108, Fujian, Peoples R China
  • [ 14 ] [Guan, Lunhui]Chinese Acad Sci, Fujian Inst Res Struct Matter, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350108, Fujian, Peoples R China
  • [ 15 ] [Jia, Yifan]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China
  • [ 16 ] [Feng, Xiao]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China
  • [ 17 ] [Wu, Qirui]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China
  • [ 18 ] [Chen, Yujia]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China

Reprint 's Address:

  • [Wu, Chuxin]Chinese Acad Sci, State Key Lab Struct Chem, Fujian Key Lab Nanomat, Fuzhou 350108, Fujian, Peoples R China;;[Guan, Lunhui]Chinese Acad Sci, State Key Lab Struct Chem, Fujian Key Lab Nanomat, Fuzhou 350108, Fujian, Peoples R China;;[Wu, Chuxin]Chinese Acad Sci, Fujian Inst Res Struct Matter, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350108, Fujian, Peoples R China;;[Guan, Lunhui]Chinese Acad Sci, Fujian Inst Res Struct Matter, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350108, Fujian, Peoples R China

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Source :

CHEMICAL ENGINEERING JOURNAL

ISSN: 1385-8947

Year: 2025

Volume: 505

1 3 . 4 0 0

JCR@2023

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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