Abstract
Hybridized 1D/2D CuGeO3/graphene composites are applied as the oxygen–electrode electrocatalysts for Li–O2 batteries. The CuGeO3/graphene composites are synthesized by the crystallographic alignment of CuGeO3 nanowires on graphene, rendering strong heteroepitaxial coupling between the 1D oxide nanostructures and the 2D electrically conducting graphene. The inherited excellent electrocatalytic activity of the CuGeO3/graphene composites leads to lower overpotentials and more stable cycling performance of Li–O2 cells than CuGeO3 nanowires and graphene. The relationships between CuGeO3 nanowires and graphene are studied for the oxygen reduction and oxygen evolution activity in both aqueous and nonaqueous solutions, and the electrocatalytic activity is improved by manipulating the redox pair and sp3/sp2 via surface chemical modification.
| Original language | English |
|---|---|
| Article number | 1801930 |
| Journal | Advanced Energy Materials |
| DOIs | |
| Publication status | Accepted/In press - 2018 Jan 1 |
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Keywords
- bifunctional phase boundary
- CuGeO
- graphene
- Li–O batteries
- synergistic effect
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
Cite this
Synergistic Effect of CuGeO3/Graphene Composites for Efficient Oxygen–Electrode Electrocatalysts in Li–O2 Batteries. / Lee, Gwang Hee; Sung, Myung Chang; Kim, Jae Chan; Song, Hee Jo; Kim, Dong-Wan.
In: Advanced Energy Materials, 01.01.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synergistic Effect of CuGeO3/Graphene Composites for Efficient Oxygen–Electrode Electrocatalysts in Li–O2 Batteries
AU - Lee, Gwang Hee
AU - Sung, Myung Chang
AU - Kim, Jae Chan
AU - Song, Hee Jo
AU - Kim, Dong-Wan
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Hybridized 1D/2D CuGeO3/graphene composites are applied as the oxygen–electrode electrocatalysts for Li–O2 batteries. The CuGeO3/graphene composites are synthesized by the crystallographic alignment of CuGeO3 nanowires on graphene, rendering strong heteroepitaxial coupling between the 1D oxide nanostructures and the 2D electrically conducting graphene. The inherited excellent electrocatalytic activity of the CuGeO3/graphene composites leads to lower overpotentials and more stable cycling performance of Li–O2 cells than CuGeO3 nanowires and graphene. The relationships between CuGeO3 nanowires and graphene are studied for the oxygen reduction and oxygen evolution activity in both aqueous and nonaqueous solutions, and the electrocatalytic activity is improved by manipulating the redox pair and sp3/sp2 via surface chemical modification.
AB - Hybridized 1D/2D CuGeO3/graphene composites are applied as the oxygen–electrode electrocatalysts for Li–O2 batteries. The CuGeO3/graphene composites are synthesized by the crystallographic alignment of CuGeO3 nanowires on graphene, rendering strong heteroepitaxial coupling between the 1D oxide nanostructures and the 2D electrically conducting graphene. The inherited excellent electrocatalytic activity of the CuGeO3/graphene composites leads to lower overpotentials and more stable cycling performance of Li–O2 cells than CuGeO3 nanowires and graphene. The relationships between CuGeO3 nanowires and graphene are studied for the oxygen reduction and oxygen evolution activity in both aqueous and nonaqueous solutions, and the electrocatalytic activity is improved by manipulating the redox pair and sp3/sp2 via surface chemical modification.
KW - bifunctional phase boundary
KW - CuGeO
KW - graphene
KW - Li–O batteries
KW - synergistic effect
UR - http://www.scopus.com/inward/record.url?scp=85055500119&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85055500119&partnerID=8YFLogxK
U2 - 10.1002/aenm.201801930
DO - 10.1002/aenm.201801930
M3 - Article
AN - SCOPUS:85055500119
JO - Advanced Energy Materials
JF - Advanced Energy Materials
SN - 1614-6832
M1 - 1801930
ER -