4.8 Article

High-Performance, Long-Life, Rechargeable Li-CO2 Batteries based on a 3D Holey Graphene Cathode Implanted with Single Iron Atoms

Journal

ADVANCED MATERIALS
Volume 32, Issue 16, Pages -

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201907436

Keywords

3D carbon; bifunctional catalysis; holey graphene; rechargeable Li-CO; (2) batteries; single-atom catalysts

Funding

  1. NASA [NNX16AD48A]
  2. ARC [DP 190103881, FL 190100126]
  3. U.S. Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Office
  4. DOE Office of Science [DE-AC02-06CH11357]
  5. NSF-DMR Award [1809439]
  6. Division Of Materials Research
  7. Direct For Mathematical & Physical Scien [1809439] Funding Source: National Science Foundation
  8. NASA [NNX16AD48A, 906521] Funding Source: Federal RePORTER

Ask authors/readers for more resources

A highly efficient cathode catalyst for rechargeable Li-CO2 batteries is successfully synthesized by implanting single iron atoms into 3D porous carbon architectures, consisting of interconnected N,S-codoped holey graphene (HG) sheets. The unique porous 3D hierarchical architecture of the catalyst with a large surface area and sufficient space within the interconnected HG framework can not only facilitate electron transport and CO2/Li+ diffusion, but also allow for a high uptake of Li2CO3 to ensure a high capacity. Consequently, the resultant rechargeable Li-CO2 batteries exhibit a low potential gap of approximate to 1.17 V at 100 mA g(-1) and can be repeatedly charged and discharged for over 200 cycles with a cut-off capacity of 1000 mAh g(-1) at a high current density of 1 A g(-1). Density functional theory calculations are performed and the observed appealing catalytic performance is correlated with the hierarchical structure of the carbon catalyst. This work provides an effective approach to the development of highly efficient cathode catalysts for metal-CO2 batteries and beyond.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.8
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available