Type

Journal Article

Authors

Colm O'Dwyer
Hugh Geaney
David McNulty

Subjects

Chemistry

Topics
high rate carbon inverse opal oxide capacity electrolyte transport transition metal metal

Carbon-Coated Honeycomb Ni-Mn-Co-O Inverse Opal: A High Capacity Ternary Transition Metal Oxide Anode for Li-ion Batteries. (2016)

Abstract We present the formation of a carbon-coated honeycomb ternary Ni-Mn-Co-O inverse opal as a conversion mode anode material for Li-ion battery applications. In order to obtain high capacity via conversion mode reactions, a single phase crystalline honeycombed IO structure of Ni-Mn-Co-O material was first formed. This Ni-Mn-Co-O IO converts via reversible redox reactions and Li2O formation to a 3D structured matrix assembly of nanoparticles of three (MnO, CoO and NiO) oxides, that facilitates efficient reactions with Li. A carbon coating maintains the structure without clogging the open-worked IO pore morphology for electrolyte penetration and mass transport of products during cycling. The highly porous IO was compared in a Li-ion half-cell to nanoparticles of the same material and showed significant improvement in specific capacity and capacity retention. Further optimization of the system was investigated by incorporating a vinylene carbonate additive into the electrolyte solution which boosted performance, offering promising high-rate performance and good capacity retention over extended cycling. The analysis confirms the possibility of creating a ternary transition metal oxide material with binder free accessible open-worked structure to allow three conversion mode oxides to efficiently cycle as an anode material for Li-ion battery applications.
Collections Ireland -> University College Cork -> PubMed

Full list of authors on original publication

Colm O'Dwyer, Hugh Geaney, David McNulty

Experts in our system

1
Colm O'Dwyer
University College Cork
Total Publications: 121
 
2
Hugh Geaney
University College Cork
Total Publications: 33
 
3
David McNulty
University College Cork
Total Publications: 20