A pyrolyzed polyacrylonitrile/selenium disulfide composite cathode with remarkable lithium and sodium storage performances

Zhen Li; Jintao Zhang; Yan Lu; Xiong Wen Lou

doi:10.1126/sciadv.aat1687

A pyrolyzed polyacrylonitrile/selenium disulfide composite cathode with remarkable lithium and sodium storage performances

Zhen Li
, Jintao Zhang
, Yan Lu
, Xiong Wen Lou^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

265 Citations (Scopus)

43 Downloads (CityUHK Scholars)

Abstract

As a special class of cathode materials for lithium-sulfur batteries, pyrolyzed polyacrylonitrile/sulfur (pPAN/S) can completely solve the polysulfide dissolution problem and deliver reliable performance. However, the applicable S contents of pPAN/S are usually lower than 50 weight % (wt %), and their capacity utilizations are not sufficient, both of which greatly limit their energy densities for commercial applications. We report a pyrolyzed polyacrylonitrile/selenium disulfide (pPAN/SeS₂) composite with dramatically enhanced active material content (63 wt %) and superior performances for both lithium and sodium storage. As a result, pPAN/SeS₂ delivers high capacity of >1100 mAh g⁻¹ at 0.2 A g⁻¹ for Li storage with extremely stable cycle life over 2000 cycles at 4.0 A g⁻¹. Moreover, when applied in a room temperature Na-SeS₂ battery, pPAN/SeS₂ achieves superior capacity of >900 mAh g⁻1 at 0.1 A g⁻¹ and delivers prolonged cycle life over 400 cycles at 1.0 A g⁻¹. Copyright © 2018 The Authors.

Original language	English
Article number	eaat1687
Journal	Science Advances
Volume	4
Issue number	6
DOIs	https://doi.org/10.1126/sciadv.aat1687
Publication status	Published - 8 Jun 2018
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

X.W.L. is grateful to the Office of Naval Research Global (US) for financial support through the Naval Research Grant (N62909-17-1-2162, M4062262).

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

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This full text is made available under CC-BY-NC 4.0. https://creativecommons.org/licenses/by-nc/4.0/

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title = "A pyrolyzed polyacrylonitrile/selenium disulfide composite cathode with remarkable lithium and sodium storage performances",

abstract = "As a special class of cathode materials for lithium-sulfur batteries, pyrolyzed polyacrylonitrile/sulfur (pPAN/S) can completely solve the polysulfide dissolution problem and deliver reliable performance. However, the applicable S contents of pPAN/S are usually lower than 50 weight \% (wt \%), and their capacity utilizations are not sufficient, both of which greatly limit their energy densities for commercial applications. We report a pyrolyzed polyacrylonitrile/selenium disulfide (pPAN/SeS2) composite with dramatically enhanced active material content (63 wt \%) and superior performances for both lithium and sodium storage. As a result, pPAN/SeS2 delivers high capacity of >1100 mAh g−1 at 0.2 A g−1 for Li storage with extremely stable cycle life over 2000 cycles at 4.0 A g−1. Moreover, when applied in a room temperature Na-SeS2 battery, pPAN/SeS2 achieves superior capacity of >900 mAh g−1 at 0.1 A g−1 and delivers prolonged cycle life over 400 cycles at 1.0 A g−1. Copyright {\textcopyright} 2018 The Authors.",

author = "Zhen Li and Jintao Zhang and Yan Lu and Lou, \{Xiong Wen\}",

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AU - Zhang, Jintao

AU - Lu, Yan

AU - Lou, Xiong Wen

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2018/6/8

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N2 - As a special class of cathode materials for lithium-sulfur batteries, pyrolyzed polyacrylonitrile/sulfur (pPAN/S) can completely solve the polysulfide dissolution problem and deliver reliable performance. However, the applicable S contents of pPAN/S are usually lower than 50 weight % (wt %), and their capacity utilizations are not sufficient, both of which greatly limit their energy densities for commercial applications. We report a pyrolyzed polyacrylonitrile/selenium disulfide (pPAN/SeS2) composite with dramatically enhanced active material content (63 wt %) and superior performances for both lithium and sodium storage. As a result, pPAN/SeS2 delivers high capacity of >1100 mAh g−1 at 0.2 A g−1 for Li storage with extremely stable cycle life over 2000 cycles at 4.0 A g−1. Moreover, when applied in a room temperature Na-SeS2 battery, pPAN/SeS2 achieves superior capacity of >900 mAh g−1 at 0.1 A g−1 and delivers prolonged cycle life over 400 cycles at 1.0 A g−1. Copyright © 2018 The Authors.

AB - As a special class of cathode materials for lithium-sulfur batteries, pyrolyzed polyacrylonitrile/sulfur (pPAN/S) can completely solve the polysulfide dissolution problem and deliver reliable performance. However, the applicable S contents of pPAN/S are usually lower than 50 weight % (wt %), and their capacity utilizations are not sufficient, both of which greatly limit their energy densities for commercial applications. We report a pyrolyzed polyacrylonitrile/selenium disulfide (pPAN/SeS2) composite with dramatically enhanced active material content (63 wt %) and superior performances for both lithium and sodium storage. As a result, pPAN/SeS2 delivers high capacity of >1100 mAh g−1 at 0.2 A g−1 for Li storage with extremely stable cycle life over 2000 cycles at 4.0 A g−1. Moreover, when applied in a room temperature Na-SeS2 battery, pPAN/SeS2 achieves superior capacity of >900 mAh g−1 at 0.1 A g−1 and delivers prolonged cycle life over 400 cycles at 1.0 A g−1. Copyright © 2018 The Authors.

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A pyrolyzed polyacrylonitrile/selenium disulfide composite cathode with remarkable lithium and sodium storage performances

Abstract

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