Effect of Mesoporous Structured Cathode Materials on Charging Potentials and Rate Capability of Lithium-Oxygen Batteries

Cited 21 time in webofscience Cited 0 time in scopus
  • Hit : 129
  • Download : 0
Solid and nonconductive discharge products that form on the cathode of Li-O-2 batteries are difficult to decompose efficiently into Li+ and O-2 during charging, which induces a high overcharge potential, low energy efficiency, and poor cyclability. In this paper, we investigated the effects of the mesoporous structure on the morphology of the discharge products, the capacities of the cells, and the discharging/charging potentials. To isolate the effect of the mesostructures, mesoporous carbons, CMK-3 and MSU-F-C, were used without the addition of other electrocatalysts. The discharge products were confined within the pores. Consequently, the charging potentials were decreased owing to small and amorphous lithium oxides. The large, 3D interconnected pores of MSU-F-C lowered the charging potentials at a high current density and increased the rate capabilities relative to the parameters found for the small pores of CMK-3. These results demonstrate that control of the porous structure is necessary to enhance the performance of Li-O-2 batteries.
Publisher
WILEY-V C H VERLAG GMBH
Issue Date
2015-09
Language
English
Article Type
Article
Keywords

RECHARGEABLE LI-O-2 BATTERIES; MESOCELLULAR CARBON FOAMS; ELECTROCHEMICAL PERFORMANCE; SURFACE-AREA; ELECTRODES; ELECTROCATALYSTS; SUPERCAPACITORS; CAPACITANCE; CATALYSTS; EFFICIENT

Citation

CHEMSUSCHEM, v.8, no.18, pp.3146 - 3152

ISSN
1864-5631
DOI
10.1002/cssc.201500534
URI
http://hdl.handle.net/10203/245027
Appears in Collection
CBE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 21 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0