Air-Stable Copper-Based P2-Na_7/9Cu_2/9Fe_1/9Mn_2/3O₂ as a New Positive Electrode Material for Sodium-Ion Batteries.

ABSTRACT: An air-stable copper-based P2-Na_7/9Cu_2/9Fe_1/9Mn_2/3O₂ is designed and synthesized by a simple solid-state method and investigated as a positive electrode material for sodium-ion batteries. The attractive long cycling stability is demonstrated by the capacity retention of 85% after 150 cycles at 1 C rate without phase transformation. The reversible Cu²⁺/Cu³⁺ redox couple in P2 phase oxides is proved for the first time.

SUBMITTER: Li Y 

PROVIDER: S-EPMC5115408 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature