Abstract:
:Structural degradation and low conductivity of transition-metal oxides lead to severe capacity fading in lithium-ion batteries. Recent efforts to solve this issue have mainly focused on using nanocomposites or hybrids by integrating nanosized metal oxides with conducting additives. Here we design specific hierarchical structures and demonstrate their use in flexible, large-area anode assemblies. Fabrication of these anodes is achieved via oxidative growth of copper oxide nanowires onto copper substrates followed by radio-frequency sputtering of carbon-nitride films, forming freestanding three-dimensional arrays with core-shell nano-architecture. Cable-like copper oxide/carbon-nitride core-shell nanostructures accommodate the volume change during lithiation-delithiation processes, the three-dimensional arrays provide abundant electroactive zones and electron/ion transport paths, and the monolithic sandwich-type configuration without additional binders or conductive agents improves energy/power densities of the whole electrode.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Tan G,Wu F,Yuan Y,Chen R,Zhao T,Yao Y,Qian J,Liu J,Ye Y,Shahbazian-Yassar R,Lu J,Amine Kdoi
10.1038/ncomms11774subject
Has Abstractpub_date
2016-06-03 00:00:00pages
11774issn
2041-1723pii
ncomms11774journal_volume
7pub_type
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