A new insight into the lithium storage mechanism of sulfurized polyacrylonitrile with no soluble intermediates

Jin, Zhaoqing; Liu, Yonggang; Wang, Weikun; Wang, Anbang; Hu, Bingwen; Shen, Ming; Gao, Tong; Zhao, Pengcheng; Yang, Yusheng

doi:10.1016/j.ensm.2018.04.013

Cited by 143 publications

(142 citation statements)

References 38 publications

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“…Subsequently, researchers proposed that the conjugated PAN polymer backbones can form delocalized radicals, to activate the formed Li 2 S to reconnect to PAN polymer backbones during the charging process 59,60. However more recently, instead of a general belief of the lithiation of S in S/PAN, extra Li storage mechanisms such as at C, N in S/PAN polymer structures were discovered 61,62. To the best of our knowledge, this is the first report concerning the S/PAN characterization in a solid‐state battery configuration.…”

Section: Resultsmentioning

confidence: 92%

Solid‐State Lithium–Sulfur Battery Enabled by Thio‐LiSICON/Polymer Composite Electrolyte and Sulfurized Polyacrylonitrile Cathode

Frerichs

Kolek

et al. 2020

Adv Funct Materials

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Solid‐state lithium–sulfur battery (SSLSB) is attractive due to its potential for providing high energy density. However, the cell chemistry of SSLSB still faces challenges such as sluggish electrochemical kinetics and prominent “chemomechanical” failure. Herein, a high‐performance SSLSB is demonstrated by using the thio‐LiSICON/polymer composite electrolyte in combination with sulfurized polyacrylonitrile (S/PAN) cathode. Thio‐LiSICON/polymer composite electrolyte, which processes high ionic conductivity and wettability, is fabricated to enhance the interfacial contact and the performance of lithium metal anodes. S/PAN is utilized due to its unique electrochemical characteristics: electrochemical and structural studies combined with nuclear magnetic resonance spectroscopy and electron paramagnetic resonance characterizations reveal the charge/discharge mechanism of S/PAN, which is the radical‐mediated redox reaction within the sulfur grafted conjugated polymer framework. This characteristic of S/PAN can support alleviating the volume change in the cathode and maintaining fast redox kinetics. The assembled SSLSB full cell exhibits excellent rate performance with 1183 mAh g−1 at 0.2 C and 719 mAh g−1 at 0.5 C, respectively, and can accomplish 50 cycles at 0.1 C with the capacity retention of 588 mAh g−1. The superior performance of the SSLSB cell rationalizes the construction concept and leads to considerations for the innovative design of SSLSB.

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Section: Resultsmentioning

confidence: 92%

Solid‐State Lithium–Sulfur Battery Enabled by Thio‐LiSICON/Polymer Composite Electrolyte and Sulfurized Polyacrylonitrile Cathode

Frerichs

Kolek

et al. 2020

Adv Funct Materials

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“…Recently, Liu et al. presented a conjugate double‐bond Li + storage mechanism . They explained that a sulfur‐based one‐electron process and unsaturated double‐bonds afforded the capacity.…”

Section: Structure Of the S@ppan Compositementioning

confidence: 99%

Prospect of Sulfurized Pyrolyzed Poly(acrylonitrile) (S@pPAN) Cathode Materials for Rechargeable Lithium Batteries

et al. 2020

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Lithium–sulfur (Li–S) batteries are one of the most promising next‐generation batteries owing to their ultra‐high theoretical energy density and that sulfur is an abundant resource. During the past 20 years, various sulfur materials have been reported. As a molecular‐scale sulfur‐composite cathode, sulfurized pyrolyzed poly(acrylonitrile) (S@pPAN) exhibits several competitive advantages in terms of its electrochemical behavior. Although it was first reported in 2002 S@pPAN is currently attracting increasing attention. In this Minireview, we summarize its molecular model and explore the correlation between its structure and its exceptional electrochemical performance. We classify the modification strategies into three types, including material improvement, binder, and electrolyte screening. Several research and development directions are also suggested.

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“…Recently,L iu et al presented ac onjugate double-bond Li + storage mechanism. [24] They explained that as ulfur- [20] Copyright Year 2011, AmericanC hemical Society.d )Reaction route proposed by Zhang. Reproducedwith permission.…”

Section: Structure Of the S@ppan Compositementioning

confidence: 99%

Prospect of Sulfurized Pyrolyzed Poly(acrylonitrile) (S@pPAN) Cathode Materials for Rechargeable Lithium Batteries

Yang¹,

Chen²,

Yang³

et al. 2020

Angewandte Chemie

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A new insight into the lithium storage mechanism of sulfurized polyacrylonitrile with no soluble intermediates

Cited by 143 publications

References 38 publications

Solid‐State Lithium–Sulfur Battery Enabled by Thio‐LiSICON/Polymer Composite Electrolyte and Sulfurized Polyacrylonitrile Cathode

Solid‐State Lithium–Sulfur Battery Enabled by Thio‐LiSICON/Polymer Composite Electrolyte and Sulfurized Polyacrylonitrile Cathode

Prospect of Sulfurized Pyrolyzed Poly(acrylonitrile) (S@pPAN) Cathode Materials for Rechargeable Lithium Batteries

Prospect of Sulfurized Pyrolyzed Poly(acrylonitrile) (S@pPAN) Cathode Materials for Rechargeable Lithium Batteries

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