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Title: Structural and Interphasial Stabilities of Sulfurized Polyacrylonitrile (SPAN) Cathode

Journal Article · · ACS Energy Letters

Sulfurized polyacrylonitrile (SPAN) has attracted a lot of attention because of its low cost, high capacity, and great reversibility. Due to its structural complexity and amorphous nature, reaction mechanism of SPAN is little understood. Here, for this paper, we study the structural and interphasial changes of SPAN using synchrotron-based pair distribution function (PDF) analysis and soft X-ray absorption spectroscopy (sXAS). PDF identifies key structural features, including C–S bond, sulfur dimer, and sulfur chain in SPAN. The sulfur dimer bridging the pyridine network partially converts to sulfur chain during the first charging. In the following cycles, sulfur chain goes through lithiation and delithiation with reversibility dependent on the electrolytes. SXAS reveals surface changes of SPAN. After the first cycle, a negatively charged carbon or fused benzene layer is formed, on top of which is another layer formed by the electrolyte decomposition. The layer formed by localized high concentration electrolyte is stable during cycling.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO)
Grant/Contract Number:
SC0012704
OSTI ID:
1984414
Report Number(s):
BNL-224487-2023-JAAM
Journal Information:
ACS Energy Letters, Vol. 8, Issue 6; ISSN 2380-8195
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (35)

Rechargeable Lithium–Sulfur Batteries journal July 2014
Review on organosulfur materials for rechargeable lithium batteries journal January 2021
Lithium-Sulfur Batteries: Electrochemistry, Materials, and Prospects journal November 2013
An Empirical Model for the Design of Batteries with High Energy Density journal February 2020
A Novel Conductive Polymer-Sulfur Composite Cathode Material for Rechargeable Lithium Batteries journal July 2002
Understanding of Sulfurized Polyacrylonitrile for Superior Performance Lithium/Sulfur Battery journal July 2014
Recognizing the Mechanism of Sulfurized Polyacrylonitrile Cathode Materials for Li–S Batteries and beyond in Al–S Batteries journal November 2018
Mechanistic understanding of the Sulfurized-Poly(acrylonitrile) cathode for lithium-sulfur batteries journal April 2020
Sulfurized polyacrylonitrile for high-performance lithium sulfur batteries: advances and prospects journal January 2021
Cathode electrolyte interface enabling stable Li–S batteries journal September 2019
Structure-Related Electrochemistry of Sulfur-Poly(acrylonitrile) Composite Cathode Materials for Rechargeable Lithium Batteries journal November 2011
Dual Passivation of Cathode and Anode through Electrode–Electrolyte Interface Engineering Enables Long-Lifespan Li Metal–SPAN Batteries journal August 2022
Easily Accessible, Textile Fiber-Based Sulfurized Poly(acrylonitrile) as Li/S Cathode Material: Correlating Electrochemical Performance with Morphology and Structure journal February 2017
Ultrahigh coulombic efficiency electrolyte enables Li||SPAN batteries with superior cycling performance journal January 2021
The Role of Ion Transport in the Failure of High Areal Capacity Li Metal Batteries journal July 2022
Pair distribution function analysis: Fundamentals and application to battery materials journal January 2020
A chemically stabilized sulfur cathode for lean electrolyte lithium sulfur batteries journal June 2020
Identification of LiH and nanocrystalline LiF in the solid–electrolyte interphase of lithium metal anodes journal January 2021
Soft X-ray spectroscopy of light elements in energy storage materials journal September 2021
Understanding Photoelectrochemical Water Oxidation with X-ray Absorption Spectroscopy journal February 2020
Understanding the Roles of the Electrode/Electrolyte Interface for Enabling Stable Li∥Sulfurized Polyacrylonitrile Batteries journal July 2021
Restricting the Solubility of Polysulfides in Li-S Batteries Via Electrolyte Salt Selection journal March 2016
Origin of shuttle-free sulfurized polyacrylonitrile in lithium-sulfur batteries journal April 2021
Cathode materials for lithium–sulfur batteries based on sulfur covalently bound to a polymeric backbone journal January 2020
Revealing solid electrolyte interphase formation through interface-sensitive Operando X-ray absorption spectroscopy journal October 2022
Understanding the degradation mechanism of rechargeable lithium/sulfur cells: a comprehensive study of the sulfur–graphene oxide cathode after discharge–charge cycling journal January 2014
Toward Better Lithium–Sulfur Batteries: Functional Non-aqueous Liquid Electrolytes journal August 2018
Insight on lithium metal anode interphasial chemistry: Reduction mechanism of cyclic ether solvent and SEI film formation journal February 2019
Sulfur‐Composites Derived from Poly(acrylonitrile) and Poly(vinylacetylene) – A Comparative Study on the Role of Pyridinic and Thioamidic Nitrogen journal January 2023
Multiscale Understanding of Covalently Fixed Sulfur–Polyacrylonitrile Composite as Advanced Cathode for Metal–Sulfur Batteries journal August 2021
Sulfurized Polyacrylonitrile Cathodes with High Compatibility in Both Ether and Carbonate Electrolytes for Ultrastable Lithium–Sulfur Batteries journal July 2019
Structural Transformation in a Sulfurized Polymer Cathode to Enable Long-Life Rechargeable Lithium–Sulfur Batteries journal April 2023
Two-dimensional detector software: From real detector to idealised image or two-theta scan journal January 1996
PDFgetX2: a GUI-driven program to obtain the pair distribution function from X-ray powder diffraction data journal July 2004
ATHENA , ARTEMIS , HEPHAESTUS : data analysis for X-ray absorption spectroscopy using IFEFFIT journal June 2005