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Polysulfides capture-copper additive for long cycle life lithium sulfur batteries

Journal Article · · ACS Applied Materials and Interfaces
 [1];  [2];  [2];  [2];  [1];  [1]
  1. Tsinghua Univ., Beijing (China)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)

Copper powder was introduced into the lithium sulfur battery system to capture intermediate polysulfides and CuxS (x = 1 or 2) species was generated depending on the chain length of polysulfides. This phenomenon was verified by X-ray absorption near edge structure technique. The results indicated that copper can be oxidized to CuS by Li2Sx (x ≥ 6), and a mixture of Cu2S and CuS was obtained when x ranges from 3 to 6. While Cu2S is eventually formed in the presence of Li2S3. After several cycles activation, the polysulfide-shuttle effect and self-discharge phenomenon which hinder the application of lithium sulfur batteries are found nearly eliminated Further experiments demonstrated that in the case of Cu2S generation, a high specific sulfur capacity of 1300 mAh g–1 could be delivered, corresponding to 77.6% sulfur utilization, while the Coulombic efficiency approximates around 100%. As a result, self-discharge experiment further demonstrated that polysulfides almost disappear in the electrolyte, which verified the polysulfide-capture capability of copper.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Natural Science Foundation of China (NSFC)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1364637
Journal Information:
ACS Applied Materials and Interfaces, Journal Name: ACS Applied Materials and Interfaces Journal Issue: 44 Vol. 8; ISSN 1944-8244
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (16)

New Strategy for Polysulfide Protection Based on Atomic Layer Deposition of TiO 2 onto Ferroelectric-Encapsulated Cathode: Toward Ultrastable Free-Standing Room Temperature Sodium-Sulfur Batteries journal January 2018
In Situ Formation of Copper-Based Hosts Embedded within 3D N-Doped Hierarchically Porous Carbon Networks for Ultralong Cycle Lithium-Sulfur Batteries journal August 2018
Carbonized-MOF as a Sulfur Host for Aluminum-Sulfur Batteries with Enhanced Capacity and Cycling Life journal January 2019
Sulfur Immobilization by “Chemical Anchor” to Suppress the Diffusion of Polysulfides in Lithium-Sulfur Batteries journal December 2017
Chemical Immobilization and Conversion of Active Polysulfides Directly by Copper Current Collector: A New Approach to Enabling Stable Room-Temperature Li-S and Na-S Batteries journal May 2018
A Four‐Electron Sulfur Electrode Hosting a Cu 2+ /Cu + Redox Charge Carrier journal July 2019
A Four‐Electron Sulfur Electrode Hosting a Cu 2+ /Cu + Redox Charge Carrier journal September 2019
CuS and Cu 2 S as Cathode Materials for Lithium Batteries: A Review journal March 2019
Cu 9 S 5 Nanoflower Cathode for Mg Secondary Batteries: High Performance and Reaction Mechanism journal March 2019
Recent advances in cathode materials for Li–S battery: structure and performance journal April 2017
A high-performance lithium anode based on N-doped composite graphene journal April 2019
MOF-derived porous N–Co 3 O 4 @N–C nanododecahedra wrapped with reduced graphene oxide as a high capacity cathode for lithium–sulfur batteries journal January 2018
Promoting sulfur adsorption using surface Cu sites in metal–organic frameworks for lithium sulfur batteries journal January 2018
Revisiting the use of electrolyte additives in Li–S batteries: the role of porosity of sulfur host materials journal January 2019
Rechargeable Solid-State Copper Sulfide Cathodes for Alkaline Batteries: Importance of the Copper Valence State journal January 2019
Tri-Functional Copper Sulfide as Sulfur Carrier for High-Performance Lithium-Sulfur Batteries journal January 2017

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