Carbon Nitride Coupled Co3O4: A Pyrolysis-Based Approach for High-Performance Hybrid Energy Storage

Graphitic carbon nitride (CN) is a cost-effective and easily synthesized supercapacitor electrode material. However, its limited specific capacity has hindered its practical use. To address this, we developed a binary nanostructure by growing nanosized Co3O4 particles on CN. The CN-Co-2 composite, s...

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Published in:The journal of physical chemistry letters 2023-10, Vol.14 (42), p.9412-9423
Main Authors: Vattikuti, S. V. Prabhakar, Hoang Ngoc, Cam Tu, Nguyen, Hoa, Nguyen Thi, Nam Hai, Shim, Jaesool, Dang, Nam Nguyen
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Physical Insights into Energy Science
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container_issue 42
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container_title The journal of physical chemistry letters
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creator Vattikuti, S. V. Prabhakar
Hoang Ngoc, Cam Tu
Nguyen, Hoa
Nguyen Thi, Nam Hai
Shim, Jaesool
Dang, Nam Nguyen
description Graphitic carbon nitride (CN) is a cost-effective and easily synthesized supercapacitor electrode material. However, its limited specific capacity has hindered its practical use. To address this, we developed a binary nanostructure by growing nanosized Co3O4 particles on CN. The CN-Co-2 composite, synthesized via thermal decomposition, exhibited a remarkable specific capacity of 280.64 C/g at 2 A/g. Even under prolonged cycling at 10.5 A/g, the retention rate exceeded 95%, demonstrating exceptional stability. In an asymmetric capacitor device, the CN-Co composite delivered 20.84 Wh/kg at 1000 W/kg, with a retention rate of 99.97% over 20,000 cycles, showcasing outstanding cycling stability. Controlled cobalt source adjustments yielded high-capacity electrode materials with battery-like behavior. This optimization strategy enhances energy density by retaining battery-like properties. In summary, the CN-Co composite is a promising, low-cost, easily synthesized electrode material with a high specific capacity and remarkable cycling stability, making it an attractive choice for energy storage applications.
doi_str_mv 10.1021/acs.jpclett.3c02030
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Lett</addtitle><date>2023-10-26</date><risdate>2023</risdate><volume>14</volume><issue>42</issue><spage>9412</spage><epage>9423</epage><pages>9412-9423</pages><issn>1948-7185</issn><eissn>1948-7185</eissn><notes>ObjectType-Article-1</notes><notes>SourceType-Scholarly Journals-1</notes><notes>ObjectType-Feature-2</notes><notes>content type line 23</notes><abstract>Graphitic carbon nitride (CN) is a cost-effective and easily synthesized supercapacitor electrode material. However, its limited specific capacity has hindered its practical use. To address this, we developed a binary nanostructure by growing nanosized Co3O4 particles on CN. The CN-Co-2 composite, synthesized via thermal decomposition, exhibited a remarkable specific capacity of 280.64 C/g at 2 A/g. Even under prolonged cycling at 10.5 A/g, the retention rate exceeded 95%, demonstrating exceptional stability. 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title Carbon Nitride Coupled Co3O4: A Pyrolysis-Based Approach for High-Performance Hybrid Energy Storage
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