Your browser doesn't support javascript.
loading
Investigation of the Li-S Battery Mechanism by Real-Time Monitoring of the Changes of Sulfur and Polysulfide Species during the Discharge and Charge.
Zheng, Dong; Liu, Dan; Harris, Joshua B; Ding, Tianyao; Si, Jingyu; Andrew, Sergei; Qu, Deyu; Yang, Xiao-Qing; Qu, Deyang.
Affiliation
  • Zheng D; Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin-Milwaukee , Milwaukee, Wisconsin 53211, United States.
  • Liu D; Department of Chemistry, School of Science, Wuhan University of Technology , Wuhan 430070, Hubei, P. R. China.
  • Harris JB; Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin-Milwaukee , Milwaukee, Wisconsin 53211, United States.
  • Ding T; Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin-Milwaukee , Milwaukee, Wisconsin 53211, United States.
  • Si J; Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin-Milwaukee , Milwaukee, Wisconsin 53211, United States.
  • Andrew S; Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin-Milwaukee , Milwaukee, Wisconsin 53211, United States.
  • Qu D; Department of Chemistry, School of Science, Wuhan University of Technology , Wuhan 430070, Hubei, P. R. China.
  • Yang XQ; Chemistry Department, Brookhaven National Laboratory , Upton, New York 11973, United States.
  • Qu D; Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin-Milwaukee , Milwaukee, Wisconsin 53211, United States.
ACS Appl Mater Interfaces ; 9(5): 4326-4332, 2017 Feb 08.
Article de En | MEDLINE | ID: mdl-27612389
ABSTRACT
The mechanism of the sulfur cathode in Li-S batteries has been proposed. It was revealed by the real-time quantitative determination of polysulfide species and elemental sulfur by means of high-performance liquid chromatography in the course of the discharge and recharge of a Li-S battery. A three-step reduction mechanism including two chemical equilibrium reactions was proposed for the sulfur cathode discharge. The typical two-plateau discharge curve for the sulfur cathode can be explained. A two-step oxidation mechanism for Li2S and Li2S2 with a single chemical equilibrium among soluble polysulfide ions was proposed. The chemical equilibrium among S52-, S62-, S72-, and S82- throughout the entire oxidation process resulted for a single flat recharge curve in Li-S batteries.
Mots clés
Texte intégral
Ajouter à My VHL
Imprimer
XML
PubMed Links
Recherche sur Google

Texte intégral: 1 Collection: 01-internacional Base de données: MEDLINE Langue: En Journal: ACS Appl Mater Interfaces Sujet du journal: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Année: 2017 Type de document: Article Pays d'affiliation: États-Unis d'Amérique
Texte intégral
Ajouter à My VHL
Imprimer
XML
PubMed Links
Recherche sur Google

Texte intégral: 1 Collection: 01-internacional Base de données: MEDLINE Langue: En Journal: ACS Appl Mater Interfaces Sujet du journal: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Année: 2017 Type de document: Article Pays d'affiliation: États-Unis d'Amérique