Cyclability evaluation on Si based Negative Electrode in Lithium ion Battery by Graphite Phase Evolution : an operando X-ray diffraction study

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Chih-Wei Hu
  • Jyh-Pin Chou
  • Shang-Chieh Hou
  • Yu-Fan Su
  • Tsan-Yao Chen
  • Wing-Keong Liew
  • Yen-Fa Liao
  • Jow-Lay Huang
  • Jin-Ming Chen
  • Chia-Chin Chang

Detail(s)

Original languageEnglish
Article number1299
Journal / PublicationScientific Reports
Volume9
Early online date4 Feb 2019
Publication statusPublished - 2019

Link(s)

Abstract

Artificial graphite (FSN) additive is employed as internal structural label for projecting cyclability of Si material native electrode in a mass ratio of Si/FSN = 1.0 in Li ion battery (LIB). Results of operando X-ray diffraction analysis on Si-FSN negative electrode in LIB demonstrate that one can evaluate the lithiation and delithiation affinity of active material by referring phase transition delay of graphite as affected by experimental splits in a formation process of LIB. We prove that a thin layer of surface amorphous structure and residual lattice strain are formed in Si by high energy ball-milling treatment. Those manipulations improve Li intercalation kinetics and thus enabling a capacity fading of less than 10% (from 1860 to 1650 mAhg−1) for Si negative electrode in 50 cycles. Of utmost importance, this study discloses a robust assessment for revealing mechanism on amorphous and strain related silicide formation and predicting cyclability of negative electrode by quantitative phase evolution rate of FSN additive in LIB.

Research Area(s)

Citation Format(s)

Cyclability evaluation on Si based Negative Electrode in Lithium ion Battery by Graphite Phase Evolution : an operando X-ray diffraction study. / Hu, Chih-Wei; Chou, Jyh-Pin; Hou, Shang-Chieh; Hu, Alice; Su, Yu-Fan; Chen, Tsan-Yao; Liew, Wing-Keong; Liao, Yen-Fa; Huang, Jow-Lay; Chen, Jin-Ming; Chang, Chia-Chin.

In: Scientific Reports, Vol. 9, 1299, 2019.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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