PolyHIPE Derived Freestanding 3D Carbon Foam for Cobalt Hydroxide Nanorods Based High Performance Supercapacitor

Umakant M. Patil; Ravindra V. Ghorpade; Min Sik Nam; Archana C. Nalawade; Sangrae Lee; Haksoo Han; Seong Chan Jun

doi:10.1038/srep35490

PolyHIPE Derived Freestanding 3D Carbon Foam for Cobalt Hydroxide Nanorods Based High Performance Supercapacitor

Umakant M. Patil, Ravindra V. Ghorpade, Min Sik Nam, Archana C. Nalawade, Sangrae Lee, Haksoo Han, Seong Chan Jun

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Abstract

The current paper describes enhanced electrochemical capacitive performance of chemically grown Cobalt hydroxide (Co(OH)₂) nanorods (NRs) decorated porous three dimensional graphitic carbon foam (Co(OH)₂/3D GCF) as a supercapacitor electrode. Freestanding 3D porous GCF is prepared by carbonizing, high internal phase emulsion (HIPE) polymerized styrene and divinylbenzene. The PolyHIPE was sulfonated and carbonized at temperature up to 850 °C to obtain graphitic 3D carbon foam with high surface area (389 m² g^-1) having open voids (14 μm) interconnected by windows (4 μm) in monolithic form. Moreover, entangled Co(OH)₂ NRs are anchored on 3D GCF electrodes by using a facile chemical bath deposition (CBD) method. The wide porous structure with high specific surface area (520 m² g^-1) access offered by the interconnected 3D GCF along with Co(OH)₂ NRs morphology, displays ultrahigh specific capacitance, specific energy and power. The Co(OH) 2/3D GCF electrode exhibits maximum specific capacitance about ∼1235 F g^-1 at ∼1 A g^-1 charge-discharge current density, in 1 M aqueous KOH solution. These results endorse potential applicability of Co(OH)₂/3D GCF electrode in supercapacitors and signifies that, the porous GCF is a proficient 3D freestanding framework for loading pseudocapacitive nanostructured materials.

Original language	English
Article number	35490
Journal	Scientific reports
Volume	6
DOIs	https://doi.org/10.1038/srep35490
Publication status	Published - 2016 Oct 20

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© 2016 The Author(s).

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title = "PolyHIPE Derived Freestanding 3D Carbon Foam for Cobalt Hydroxide Nanorods Based High Performance Supercapacitor",

abstract = "The current paper describes enhanced electrochemical capacitive performance of chemically grown Cobalt hydroxide (Co(OH)2) nanorods (NRs) decorated porous three dimensional graphitic carbon foam (Co(OH)2/3D GCF) as a supercapacitor electrode. Freestanding 3D porous GCF is prepared by carbonizing, high internal phase emulsion (HIPE) polymerized styrene and divinylbenzene. The PolyHIPE was sulfonated and carbonized at temperature up to 850 °C to obtain graphitic 3D carbon foam with high surface area (389 m2 g-1) having open voids (14 μm) interconnected by windows (4 μm) in monolithic form. Moreover, entangled Co(OH)2 NRs are anchored on 3D GCF electrodes by using a facile chemical bath deposition (CBD) method. The wide porous structure with high specific surface area (520 m2 g-1) access offered by the interconnected 3D GCF along with Co(OH)2 NRs morphology, displays ultrahigh specific capacitance, specific energy and power. The Co(OH) 2/3D GCF electrode exhibits maximum specific capacitance about ∼1235 F g-1 at ∼1 A g-1 charge-discharge current density, in 1 M aqueous KOH solution. These results endorse potential applicability of Co(OH)2/3D GCF electrode in supercapacitors and signifies that, the porous GCF is a proficient 3D freestanding framework for loading pseudocapacitive nanostructured materials.",

author = "Patil, {Umakant M.} and Ghorpade, {Ravindra V.} and Nam, {Min Sik} and Nalawade, {Archana C.} and Sangrae Lee and Haksoo Han and Jun, {Seong Chan}",

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AU - Patil, Umakant M.

AU - Ghorpade, Ravindra V.

AU - Nam, Min Sik

AU - Nalawade, Archana C.

AU - Lee, Sangrae

AU - Han, Haksoo

AU - Jun, Seong Chan

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AB - The current paper describes enhanced electrochemical capacitive performance of chemically grown Cobalt hydroxide (Co(OH)2) nanorods (NRs) decorated porous three dimensional graphitic carbon foam (Co(OH)2/3D GCF) as a supercapacitor electrode. Freestanding 3D porous GCF is prepared by carbonizing, high internal phase emulsion (HIPE) polymerized styrene and divinylbenzene. The PolyHIPE was sulfonated and carbonized at temperature up to 850 °C to obtain graphitic 3D carbon foam with high surface area (389 m2 g-1) having open voids (14 μm) interconnected by windows (4 μm) in monolithic form. Moreover, entangled Co(OH)2 NRs are anchored on 3D GCF electrodes by using a facile chemical bath deposition (CBD) method. The wide porous structure with high specific surface area (520 m2 g-1) access offered by the interconnected 3D GCF along with Co(OH)2 NRs morphology, displays ultrahigh specific capacitance, specific energy and power. The Co(OH) 2/3D GCF electrode exhibits maximum specific capacitance about ∼1235 F g-1 at ∼1 A g-1 charge-discharge current density, in 1 M aqueous KOH solution. These results endorse potential applicability of Co(OH)2/3D GCF electrode in supercapacitors and signifies that, the porous GCF is a proficient 3D freestanding framework for loading pseudocapacitive nanostructured materials.

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PolyHIPE Derived Freestanding 3D Carbon Foam for Cobalt Hydroxide Nanorods Based High Performance Supercapacitor

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