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Improved Electrode Performance of Lithium-Excess MolybdenumOxyfluoride: Titanium Substitution with Concentrated Electrolyte

Penulis : Nanami Takeda [-]
Kontributor / Dosen Pembimbing :
  • Issei Ikeuchi,Ryuichi Natsui,Kensuke Nakura,Naoaki Yabuuchi
Jenis Koleksi : Jurnal elektronik
Penerbit : Kimia
Fakultas : Fakultas Matematika dan Ilmu Pengetahuan Alam
Subjek : Chemistry
Kata Kunci : lithium batteries, oxyfluoride, positive electrode, concentrated electrolyte, molybdenum
Sumber : ACSAppl.EnergyMater.XXXX, XXX, XXX?XXX
Staf Input/Edit : Latifa Noor  
File : 1 file
Tanggal Input : 18 Mar 2019

A titanium-substituted lithium-excess molyb-denum oxyfluoride, Li2.1?yTi0.2Mo0.7O2F, is synthesized bymechanical milling and tested as a positive electrode materialin a conventional carbonate-based electrolyte or concentratedelectrolyte. Reversibility as the electrode material issignificantly improved by suppression of dissolution of themolybdenum oxyfluoride on electrochemical cycles.Li2.1?yTi0.2Mo0.7O2F delivers a reversible capacity of 265 mAhg?1after 30 cycles at a rate of 50 mA g?1with concentratedelectrolyte. Thisfinding contributes to the development ofhigh-energy and long-cycle-life rechargeable lithium batterieswith lithium-excess metal oxyfluorides in the future.

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