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Title: Interaction of CuS and sulfur in Li-S battery system

Journal Article · · Journal of the Electrochemical Society
DOI:https://doi.org/10.1149/2.1021514jes· OSTI ID:1232689
 [1];  [1];  [2];  [1];  [2];  [2];  [3];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Stony Brook Univ., NY (United States)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States)
+ Show Author Affiliations

Lithium-Sulfur (Li-S) battery has been a subject of intensive research in recent years due to its potential to provide much higher energy density and lower cost than the current state of the art lithiumion battery technology. In this work, we have investigated Cupric Sulfide (CuS) as a capacitycontributing conductive additive to the sulfur electrode in a Li-S battery. Galvanostatic charge/discharge cycling has been used to compare the performance of both sulfur electrodes and S:CuS hybrid electrodes with various ratios. We found that the conductive CuS additive enhanced the utilization of the sulfur cathode under a 1C rate discharge. However, under a C/10 discharge rate, S:CuS hybrid electrodes exhibited lower sulfur utilization in the first discharge and faster capacity decay in later cycles than a pure sulfur electrode due to the dissolution of CuS. The CuS dissolution is found to be the result of strong interaction between the soluble low order polysulfide Li2S3 and CuS. As a result, we identified the presence of conductive copper-containing sulfides at the cycled lithium anode surface, which may degrade the effectiveness of the passivation function of the solid-electrolyte-interphase (SEI) layer, accounting for the poor cycling performance of the S:CuS hybrid cells at low rate.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC00112704
OSTI ID:
1232689
Report Number(s):
BNL-108540-2015-JA; YN0100000
Journal Information:
Journal of the Electrochemical Society, Vol. 162, Issue 14; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 61 works
Citation information provided by
Web of Science

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Cited By (22)

A Comprehensive Review of Materials with Catalytic Effects in Li–S Batteries: Enhanced Redox Kinetics journal August 2019
Schwefel‐basierte Elektroden mit Mehrelektronenreaktionen für Raumtemperatur‐Natriumionenspeicherung journal July 2019
TiN as a simple and efficient polysulfide immobilizer for lithium–sulfur batteries journal January 2016
Rational design of spontaneous reactions for protecting porous lithium electrodes in lithium–sulfur batteries journal July 2019
Sulfur-Based Electrodes that Function via Multielectron Reactions for Room-Temperature Sodium-Ion Storage journal July 2019
New Separators in Lithium/Sulfur Cells with High-Capacity Cathodes journal June 2017
A Four‐Electron Sulfur Electrode Hosting a Cu 2+ /Cu + Redox Charge Carrier journal July 2019
A Comprehensive Review of Materials with Catalytic Effects in Li–S Batteries: Enhanced Redox Kinetics journal December 2019
CuS and Cu 2 S as Cathode Materials for Lithium Batteries: A Review journal March 2019
Metal-based nanostructured materials for advanced lithium–sulfur batteries journal January 2018
Metallic NiSe 2 nanoarrays towards ultralong life and fast Li 2 S oxidation kinetics of Li–S batteries journal January 2019
Defect Control in the Synthesis of 2 D MoS 2 Nanosheets: Polysulfide Trapping in Composite Sulfur Cathodes for Li–S Batteries journal March 2020
Natural chalcopyrite as a sulfur source and its electrochemical performance for lithium–sulfur batteries journal January 2019
Sulfur Hosts against the Shuttle Effect journal April 2018
Anionic Redox Chemistry in Polysulfide Electrode Materials for Rechargeable Batteries journal November 2017
Nanostructured Metal Oxides and Sulfides for Lithium-Sulfur Batteries journal February 2017
Advances in Polar Materials for Lithium-Sulfur Batteries journal May 2018
Promoting sulfur adsorption using surface Cu sites in metal–organic frameworks for lithium sulfur batteries journal January 2018
Tri-Functional Copper Sulfide as Sulfur Carrier for High-Performance Lithium-Sulfur Batteries journal January 2017
Operando Multi-modal Synchrotron Investigation for Structural and Chemical Evolution of Cupric Sulfide (CuS) Additive in Li-S battery journal October 2017
A Four‐Electron Sulfur Electrode Hosting a Cu 2+ /Cu + Redox Charge Carrier journal September 2019
Recent advances in cathode materials for rechargeable lithium–sulfur batteries journal January 2019

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25 ENERGY STORAGE
conductive filler
copper sulfides
hybrid electrode
lithium sulfur battery
polysulfide
SEI