• Complex
  • Title
  • Keyword
  • Abstract
  • Scholars
  • Journal
  • ISSN
  • Conference
搜索

Author:

Zheng, Y. (Zheng, Y..) | Seifert, H. J. (Seifert, H. J..) | Shi, H. (Shi, H..) | Zhang, Y. (Zhang, Y..) (Scholars:张勇) | Kuebel, C. (Kuebel, C..) | Pfleging, W. (Pfleging, W..)

Indexed by:

CPCI-S EI Scopus SCIE

Abstract:

Graphite composite electrodes mixed with silicon are proposed as next generation anode material for high energy and high power applications. In order to overcome drawbacks caused by volume changes of silicon particles during electrochemical cycling and to maintain high specific capacities at enhanced Crates, free-standing structures are generated on silicon/graphite electrodes by applying ultrafast laser ablation. Electrochemical properties are systematically investigated by means of galvanostatic measurements, cyclic voltammetry, and electrochemical impedance spectroscopy. Cells with structured electrodes exhibit improved battery performances and lithium-ion transport kinetics in comparison to cells with unstructured electrodes. Furthermore, the cells with structured electrodes exhibit a lower impedance at fully lithiated state. After cycling, post-mortem analysis is performed revealing that the mechanical stress within the electrodes and current collector can be significantly reduced due to laser generated free-standing structures. (c) 2019 Elsevier Ltd. All rights reserved.

Keyword:

Silicon anode High rate capability Graphite anode Ultrafast laser processing Lithium-ion battery

Author Community:

  • [ 1 ] [Zheng, Y.]Karlsruhe Inst Technol, IAM AWP, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany
  • [ 2 ] [Seifert, H. J.]Karlsruhe Inst Technol, IAM AWP, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany
  • [ 3 ] [Pfleging, W.]Karlsruhe Inst Technol, IAM AWP, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany
  • [ 4 ] [Zheng, Y.]Karlsruhe Nano Micro Facil, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany
  • [ 5 ] [Kuebel, C.]Karlsruhe Nano Micro Facil, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany
  • [ 6 ] [Pfleging, W.]Karlsruhe Nano Micro Facil, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany
  • [ 7 ] [Shi, H.]Beijing Univ Technol, IMPAM, Beijing, Peoples R China
  • [ 8 ] [Zhang, Y.]Beijing Univ Technol, IMPAM, Beijing, Peoples R China

Reprint Author's Address:

  • [Zheng, Y.]Karlsruhe Inst Technol, IAM AWP, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany

Show more details

Related Keywords:

Source :

ELECTROCHIMICA ACTA

ISSN: 0013-4686

Year: 2019

Volume: 317

Page: 502-508

6 . 6 0 0

JCR@2022

ESI Discipline: CHEMISTRY;

ESI HC Threshold:166

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 67

SCOPUS Cited Count: 73

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 8

Online/Total:1636/10653115
Address:BJUT Library(100 Pingleyuan,Chaoyang District,Beijing 100124, China Post Code:100124) Contact Us:010-67392185
Copyright:BJUT Library Technical Support:Beijing Aegean Software Co., Ltd.