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Facile synthesis of lithium sulfide nanocrystals for use in advanced rechargeable batteries

Journal Article · · ACS Applied Materials and Interfaces
 [1];  [1];  [2];  [1]
  1. Colorado School of Mines, Golden, CO (United States)
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)
This work reports a new method of synthesizing anhydrous lithium sulfide (Li2S) nanocrystals and demonstrates their potential as cathode materials for advanced rechargeable batteries. Li2S is synthesized by reacting hydrogen sulfide (H2S) with lithium naphthalenide (Li-NAP), a thermodynamically spontaneous reaction that proceeds to completion rapidly at ambient temperature and pressure. The process completely removes H2S, a major industrial waste, while cogenerating 1,4-dihydronaphthalene, itself a value-added chemical that can be used as liquid fuel. The phase purity, morphology, and homogeneity of the resulting nanopowders were confirmed by X-ray diffraction and scanning electron microscopy. The synthesized Li2S nanoparticles (100 nm) were assembled into cathodes, and their performance was compared to that of cathodes fabricated using commercial Li2S micropowders (1–5 μm). As a result, electrochemical analyses demonstrated that the synthesized Li2S were superior in terms of (dis)charge capacity, cycling stability, output voltage, and voltage efficiency.
Research Organization:
NREL (National Renewable Energy Laboratory (NREL), Golden, CO (United States))
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1236162
Report Number(s):
NREL/JA--5900-65709
Journal Information:
ACS Applied Materials and Interfaces, Journal Name: ACS Applied Materials and Interfaces Journal Issue: 51 Vol. 7; ISSN 1944-8244
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (9)

Facile Preparation of High‐Content N‐Doped CNT Microspheres for High‐Performance Lithium Storage journal July 2019
Carbon Materials for Lithium Sulfur Batteries-Ten Critical Questions journal March 2016
In Situ Electrochemically Derived Amorphous-Li 2 S for High Performance Li 2 S/Graphite Full Cell journal April 2018
Na4Mn9O18 nanowires wrapped by reduced graphene oxide as efficient sulfur host material for lithium/sulfur batteries journal December 2019
A mechanochemical synthesis of submicron-sized Li 2 S and a mesoporous Li 2 S/C hybrid for high performance lithium/sulfur battery cathodes journal January 2017
Layered LiTiO 2 for the protection of Li 2 S cathodes against dissolution: mechanisms of the remarkable performance boost journal January 2018
Li 2 S/carbon nanocomposite strips from a low-temperature conversion of Li 2 SO 4 as high-performance lithium–sulfur cathodes journal January 2018
A facile synthetic approach to nanostructured Li 2 S cathodes for rechargeable solid-state Li–S batteries journal January 2019
Application of Rod-Like Li 6 PS 5 Cl Directly Synthesized by a Liquid Phase Process to Sheet-Type Electrodes for All-Solid-State Lithium Batteries journal December 2018

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