Amorphous MnO2 Coated 3D Ni Nanomesh as a Thin-film Hybrid Cathode Material under O2 Atmosphere | Zendy

Yongho Kee | Zendy; Brecht Put | Zendy; Fanny Bardé | Zendy; Philippe M. Vereecken | Zendy

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Amorphous MnO₂ Coated 3D Ni Nanomesh as a Thin-film Hybrid Cathode Material under O₂ Atmosphere

Author(s) -

Yongho Kee,

Brecht Put,

Fanny Bardé,

Philippe M. Vereecken

Publication year - 2020

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/1945-7111/ab6319

Subject(s) - nanomesh , materials science , amorphous solid , cathode , faraday efficiency , electrochemistry , chemical engineering , thin film , substrate (aquarium) , nanotechnology , electrode , graphene , chemistry , oceanography , organic chemistry , geology , engineering

In this study, we apply the economically feasible liquid ALD process to deposit a 2 nm amorphous MnO 2 thin-film on our high surface-area 3D Ni nanomesh substrate, which shows a high surface to footprint area ratio (30 cm 2 :1 cm 2 for 1 μ m thick Ni nanomesh), and demonstrate its preliminary electrochemical activity as a cathode under N 2 and O 2 . The excellent footprint charge density and faradaic efficiency can be attributed to the catalytic oxygen reduction reaction, followed by Li-intercalation thus forming a hybrid combination of Li-ion and Li-O 2 activity, alleviating the detrimental deactivation process of pristine MnO 2 .

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