Deep discharge and elevated temperature cycling of LiMn 1.485Ni0.45Cr0.05O4 spinel cathodes: Solid-state cell studies

William C. West, Yosuke Ishii, Masakazu Kaneko, Munekazu Motoyama, Yasutoshi Iriyama

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

LiNi0.5-xMn1.5MexO4 (Me = Cr, Co, Fe, Al, Ga) (LNM) provides specific capacity of ca. 130 mAh/g between 5.0 V-3.5 V though discharge to 2 V can yield 250 mAh/g. Others have shown in liquid electrolyte cells that discharge to 2 V results in steep capacity fade associated with phase transitions below 3.5 V. We show that in thin-film cells, LNM can be cycled at 25°C and 100°C between 5 V-1.9 V with little capacity fade over 100-200 cycles. These findings suggest that rapid capacity fade of LNM at deep discharge for liquid electrolyte cells is not due to an inherent crystallographic limitation of LNM.

Original languageEnglish
Pages (from-to)A99-A101
JournalECS Electrochemistry Letters
Volume3
Issue number10
DOIs
Publication statusPublished - 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Fuel Technology
  • Electrochemistry
  • Materials Chemistry

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