Journal
NANO ENERGY
Volume 67, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2019.104172
Keywords
Lithium-metal batteries; Dendrite; X-ray nano-tomography
Categories
Funding
- Assistant Secretary for Energy Efficiency and Renewable Energy, Vehicle Technologies Office, under the Advanced Battery Materials Research (BMR) Program, of the U.S. Department of Energy [DE-AC02-05CH11231f]
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A lithium-metal composite is proposed, which includes a carbon-nitrogen modified stainless steel mesh (CNSSM) favoring homogeneous lithium-metal nucleation and growth of fresh and dense lithium deposits when employed as anode for lithium-metal batteries. This novel approach is able to overcome the usual drawbacks linked to the preexisting passivation layer at the surface of lithium. Instead, a favorable interphase with low resistivity is formed with the electrolyte, and the CNSSM modified lithium-metal composite (CNSSM-Li) results in low-voltage hysteresis (+/- 24 mV) and allows stable and dendrite-free lithium electrodeposition. The performance of lithiummetal batteries demonstrates the outstanding capabilities of the novel CNSSM-Li electrode in promoting cell energy density and cycling stability. In addition, advanced X-ray nano-tomography is employed to characterize the composition and morphology changes of this electrode upon plating.
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