Open mesoporous spherical shell structured Co3O4 with highly efficient catalytic performance in Li-O2 batteries

Fan Wang; Zhaoyin Wen; Chen Shen; Kun Rui; Xiangwei Wu; Chunhua Chen

doi:10.1039/c5ta00295h

Open mesoporous spherical shell structured Co₃O₄ with highly efficient catalytic performance in Li-O₂ batteries

Fan Wang, Zhaoyin Wen, Chen Shen, Kun Rui, Xiangwei Wu, Chunhua Chen

Research output: Contribution to journal › Article › peer-review

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Abstract

An open mesoporous spherical shell structured (OMSS) Co₃O₄ was designed and synthesized through a two-step process. The OMSS Co₃O₄ with a diameter around 1 μm is constructed from a large number of nanoparticles mainly with (111) preferential exposed crystal planes. Superior catalytic activity for oxygen evolution reaction (OER) can be manifested in Li-O₂ batteries with the charge voltage platform reduced to ∼3.6 V. An outstanding performance of cycling stability was also achieved with a cut-off specific capacity of 1000 mA h g^-1 over 60 cycles. The fantastic cycling performance may be attributed to the open mesoporous spherical shell structure with high specific surface area which improves the transport capability of oxygen, increases the active sites and the sedimentary space of discharge products. It almost gets the highest cycling performance among metal oxide catalysts used in Li-O₂ batteries reported to date.

Original language	English
Pages (from-to)	7600-7606
Number of pages	7
Journal	Journal of Materials Chemistry A
Volume	3
Issue number	14
DOIs	https://doi.org/10.1039/c5ta00295h
State	Published - 14 Apr 2015
Externally published	Yes

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title = "Open mesoporous spherical shell structured Co3O4 with highly efficient catalytic performance in Li-O2 batteries",

abstract = "An open mesoporous spherical shell structured (OMSS) Co3O4 was designed and synthesized through a two-step process. The OMSS Co3O4 with a diameter around 1 μm is constructed from a large number of nanoparticles mainly with (111) preferential exposed crystal planes. Superior catalytic activity for oxygen evolution reaction (OER) can be manifested in Li-O2 batteries with the charge voltage platform reduced to ∼3.6 V. An outstanding performance of cycling stability was also achieved with a cut-off specific capacity of 1000 mA h g-1 over 60 cycles. The fantastic cycling performance may be attributed to the open mesoporous spherical shell structure with high specific surface area which improves the transport capability of oxygen, increases the active sites and the sedimentary space of discharge products. It almost gets the highest cycling performance among metal oxide catalysts used in Li-O2 batteries reported to date.",

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T1 - Open mesoporous spherical shell structured Co3O4 with highly efficient catalytic performance in Li-O2 batteries

AU - Wang, Fan

AU - Wen, Zhaoyin

AU - Shen, Chen

AU - Rui, Kun

AU - Wu, Xiangwei

AU - Chen, Chunhua

PY - 2015/4/14

Y1 - 2015/4/14

N2 - An open mesoporous spherical shell structured (OMSS) Co3O4 was designed and synthesized through a two-step process. The OMSS Co3O4 with a diameter around 1 μm is constructed from a large number of nanoparticles mainly with (111) preferential exposed crystal planes. Superior catalytic activity for oxygen evolution reaction (OER) can be manifested in Li-O2 batteries with the charge voltage platform reduced to ∼3.6 V. An outstanding performance of cycling stability was also achieved with a cut-off specific capacity of 1000 mA h g-1 over 60 cycles. The fantastic cycling performance may be attributed to the open mesoporous spherical shell structure with high specific surface area which improves the transport capability of oxygen, increases the active sites and the sedimentary space of discharge products. It almost gets the highest cycling performance among metal oxide catalysts used in Li-O2 batteries reported to date.

AB - An open mesoporous spherical shell structured (OMSS) Co3O4 was designed and synthesized through a two-step process. The OMSS Co3O4 with a diameter around 1 μm is constructed from a large number of nanoparticles mainly with (111) preferential exposed crystal planes. Superior catalytic activity for oxygen evolution reaction (OER) can be manifested in Li-O2 batteries with the charge voltage platform reduced to ∼3.6 V. An outstanding performance of cycling stability was also achieved with a cut-off specific capacity of 1000 mA h g-1 over 60 cycles. The fantastic cycling performance may be attributed to the open mesoporous spherical shell structure with high specific surface area which improves the transport capability of oxygen, increases the active sites and the sedimentary space of discharge products. It almost gets the highest cycling performance among metal oxide catalysts used in Li-O2 batteries reported to date.

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JO - Journal of Materials Chemistry A

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Open mesoporous spherical shell structured Co₃O₄ with highly efficient catalytic performance in Li-O₂ batteries

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