Effects of ethylene sulfite as a supplementary film-forming additive on the electrochemical performance of graphite anode in EC-based electrolyte

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• 作者：Aiju Li ; Peng Du ; Zhanjun Chen ; Ruirui Zhao ; Wenda Huang ; Liya Zou ; Donghai Huang…
• 关键词：Lithium ; ion battery ; Ethylene sulfite ; SEI ; Film ; forming additive
• 刊名：Ionics
• 出版年：2015
• 出版时间：September 2015
• 年：2015
• 卷：21
• 期：9
• 页码：2431-2438
• 全文大小：1,614 KB
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• 作者单位：Aiju Li (1)
  Peng Du (1)
  Zhanjun Chen (1)
  Ruirui Zhao (1)
  Wenda Huang (2)
  Liya Zou (1)
  Donghai Huang (3)
  Hongyu Chen (1)
  
  1. School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, People’s Republic of China
  2. Ningde Amperex Technology Ltd, Ningde, 352100, People’s Republic of China
  3. Guangzhou Tinci Materials Technology Co., Ltd, Guangzhou, 510760, People’s Republic of China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Electrochemistry
  Materials Science
  Physical Chemistry
  Condensed Matter
  Renewable Energy Sources
  Electrical Power Generation and Transmission
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1862-0760

文摘

The effect of ethylene sulfite (ES) as a supplementary film-forming additive on the electrochemical performance of graphite anode in ethylene carbon (EC)-based electrolyte is studied in this research by constant current charge–discharge test, cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). Results show that ES addition can change the composition of solid electrolyte interface (SEI) coating on the surface of graphite anode by inhibiting the formation of inorganic compounds in a specific stage. XPS and SEM results confirm that SEI formed in the ES-added electrolyte contains less inorganic compounds. EIS measurements further reveal that ES addition can significantly reduce the resistance of the SEI layer and interface of graphite anode–electrolyte. Keywords Lithium-ion battery Ethylene sulfite SEI Film-forming additive