Composite NiCo₂ O₄ @CeO₂ Microsphere as Cathode Catalyst for High-Performance Lithium-Oxygen Battery.

ABSTRACT: The large overpotential and poor cycle stability caused by inactive redox reactions are tough challenges for lithium-oxygen batteries (LOBs). Here, a composite microsphere material comprising NiCo₂ O₄ @CeO₂ is synthesized via a hydrothermal approach followed by an annealing processing, which is acted as a high performance electrocatalyst for LOBs. The unique microstructured catalyst can provide enough catalytic surface to facilitate the barrier-free transport of oxygen as well as lithium ions. In addition, the special microsphere and porous nanoneedles structure can effectively accelerate electrolyte penetration and the reversible formation and decomposition process of Li₂ O₂ , while the introduction of CeO₂ can increase oxy

SUBMITTER: Wu Y 

PROVIDER: S-EPMC9189671 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature