Constructing layered double hydroxide fences onto porous carbons as high-performance cathodes for lithium–sulfur batteries

Shixia Chen, Zeliang Wu, Junhui Luo, Xinxin Han, Jun Wang, Qiang Deng, Zheling Zeng, Shuguang Deng

Research output: Contribution to journalArticle

Abstract

Benefiting from the ultrahigh specific surface area, tunable pore size, and abundant surface functionality, biomass derived carbons (BC)are thriving as promising conductive matrices to host sulfur for Li[sbnd]S battery cathodes. Unfortunately, pristine BC still suffers from awful cycling performance rooted in their limited physical/chemical adsorption ability towards polysulfide. Herein, we proposed to construct Nickel Aluminum Layered Double Hydroxides (NiAl-LDH)fences coated on H 3 PO 4 activated BC (PAB)as an efficient sulfur host. The decorated NiAl-LDH fences could efficiently reinforce both chemical adsorption and physical confinement effects on polysulfides, and render as an electrocatalyst to significantly boost the redox reaction kinetics. Furthermore, the DFT simulation has been employed to illustrate enhanced interaction forces towards polysulfides. As a result, the prepared NiAl@PAB/S cell exhibits an improved performance of 1216.3 mAh g −1 initially at 0.2C (1C = 1672 mAh g −1 ), excellent cycling stability during 300 cycles at 1 C (0.13% decay rate per cycle), and superior rate capability up to 3 C (614.2 mAh g −1 ). This work provides a cost-efficient and effective method to significantly improve the overall performance of porous-carbon-based Li[sbnd]S battery cathode.

Original languageEnglish (US)
Pages (from-to)109-118
Number of pages10
JournalElectrochimica Acta
Volume312
DOIs
StatePublished - Jul 20 2019

Fingerprint

Fences
Polysulfides
Cathodes
Carbon
Hydroxides
Biomass
Nickel
Aluminum
Sulfur
Adsorption
Electrocatalysts
Redox reactions
Discrete Fourier transforms
Reaction kinetics
Specific surface area
Pore size
hydroxide ion
polysulfide
Costs
Lithium sulfur batteries

Keywords

  • Biomass-derived carbons
  • Layered double hydroxide (LDH)
  • Lithium-sulfur batteries
  • Sulfur host

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

Cite this

Constructing layered double hydroxide fences onto porous carbons as high-performance cathodes for lithium–sulfur batteries. / Chen, Shixia; Wu, Zeliang; Luo, Junhui; Han, Xinxin; Wang, Jun; Deng, Qiang; Zeng, Zheling; Deng, Shuguang.

In: Electrochimica Acta, Vol. 312, 20.07.2019, p. 109-118.

Research output: Contribution to journalArticle

Chen, Shixia ; Wu, Zeliang ; Luo, Junhui ; Han, Xinxin ; Wang, Jun ; Deng, Qiang ; Zeng, Zheling ; Deng, Shuguang. / Constructing layered double hydroxide fences onto porous carbons as high-performance cathodes for lithium–sulfur batteries. In: Electrochimica Acta. 2019 ; Vol. 312. pp. 109-118.
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