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Ultrathin graphitic C3N4 lithiophilic nanosheets regulating Li+ flux for lithium metal batteries
- Source :
- Ionics. 27:1069-1079
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- Uncontrollable dendrite growth hinders the direct use of lithium metal anode in batteries even though it has the highest energy density of all anode materials. Li and N atoms have strong interaction and could form Li–N bond, promising for regulating Li-ion flux during the plating/stripping process. Herein, we successfully prepared ultrathin graphitic carbon nitride (g-C3N4) nanosheets with a thickness of ~ 1 nm and formed a g-C3N4 thin layer over the lithium metal anode. The abundant nitrogen species within g-C3N4 nanosheets could form Li–N bonds to powerfully stabilize the lithium-ion flux and enhance the affinity of electrodes with electrolytes. On top of that, the thin layer could act as an artificial solid electrolyte interface (SEI) to suppress lithium dendrite growth and enable stable Li plating/stripping over 350 h at a high current density of 5 mA cm−2 with a low overpotential of about 50 mV. The reported work demonstrates a promising strategy of the functional artificial SEI design for Li metal anodes.
- Subjects :
- Materials science
General Chemical Engineering
General Engineering
Graphitic carbon nitride
General Physics and Astronomy
02 engineering and technology
Electrolyte
Overpotential
010402 general chemistry
021001 nanoscience & nanotechnology
Electrochemistry
01 natural sciences
0104 chemical sciences
Anode
Metal
chemistry.chemical_compound
Chemical engineering
chemistry
Plating
visual_art
Electrode
visual_art.visual_art_medium
General Materials Science
0210 nano-technology
Subjects
Details
- ISSN :
- 18620760 and 09477047
- Volume :
- 27
- Database :
- OpenAIRE
- Journal :
- Ionics
- Accession number :
- edsair.doi...........07e6923f626800dc0e6b8649ba647cb2