Electrochemical Magnetization Switching and Energy Storage in Manganese Oxide filled Carbon Nanotubes.

ABSTRACT: The ferrimagnetic and high-capacity electrode material Mn₃O₄ is encapsulated inside multi-walled carbon nanotubes (CNT). We show that the rigid hollow cavities of the CNT enforce size-controlled nanoparticles which are electrochemically active inside the CNT. The ferrimagnetic Mn₃O₄ filling is switched by electrochemical conversion reaction to antiferromagnetic MnO. The conversion reaction is further exploited for electrochemical energy storage. Our studies confirm that the theoretical reversible capacity of the Mn₃O₄ filling is fully accessible. Upon reversible cycling, the Mn₃O₄@CNT nanocomposite reaches a maximum discharge capacity of 461 mA h g^-1 at 100 mA g^-1 with a capacity r

SUBMITTER: Ottmann A 

PROVIDER: S-EPMC5648762 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature