In Situ N, O-Dually Doped Nanoporous Biochar Derived from Waste Eutrophic <i>Spirulina</i> for High-Performance Supercapacitors
Sustainable and high-performance energy storage materials are crucial to address global energy and environmental challenges. In this study, <i>Spirulina platensis</i> was used as the carbon and nitrogen source, and <i>Spirulina</i>-based nanoporous biochar (SNPB) was synthesi...
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-08-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/13/17/2431 |
| _version_ | 1797582087332560896 |
|---|---|
| author | Yihao Geng Jieni Wang Xuanyu Chen Qizhao Wang Shuqin Zhang Yijun Tian Chenxiao Liu Lin Wang Zhangdong Wei Leichang Cao Jinglai Zhang Shicheng Zhang |
| author_facet | Yihao Geng Jieni Wang Xuanyu Chen Qizhao Wang Shuqin Zhang Yijun Tian Chenxiao Liu Lin Wang Zhangdong Wei Leichang Cao Jinglai Zhang Shicheng Zhang |
| author_sort | Yihao Geng |
| collection | DOAJ |
| description | Sustainable and high-performance energy storage materials are crucial to address global energy and environmental challenges. In this study, <i>Spirulina platensis</i> was used as the carbon and nitrogen source, and <i>Spirulina</i>-based nanoporous biochar (SNPB) was synthesized through chemical activation using KOH as the activating agent in N<sub>2</sub> atmosphere. SNPB-800-4 was characterized by N<sub>2</sub> adsorption–desorption and XPS, showing a high specific surface area (2923.7 m<sup>2</sup> g<sup>−1</sup>) and abundant heteroatomic oxygen (13.78%) and nitrogen (2.55%). SNPB-800-4 demonstrated an exceptional capacitance of 348 F g<sup>−1</sup> at a current density of 1 A g<sup>−1</sup> and a remarkable capacitance retention of 94.14% after 10,000 cycles at a current density of 10 A g<sup>−1</sup> in 6 M KOH. Notably, symmetric supercapacitors SNPB-800-4//SNPB-800-4 achieved the maximum energy and power densities of 17.99 Wh kg<sup>−1</sup> and 162.48 W kg<sup>−1</sup>, respectively, at a current density of 0.5 A g<sup>−1</sup>, and still maintained 2.66 Wh kg<sup>−1</sup> when the power density was increased to 9685.08 W kg<sup>−1</sup> at a current density of 30 A g<sup>−1</sup>. This work provides an easily scalable and straightforward way to convert waste algae biomass into in situ N, O-dually doped biochar for ultra-high-power supercapacitors. |
| first_indexed | 2024-03-10T23:16:54Z |
| format | Article |
| id | doaj.art-f49ce448f05246c58e5743e5ab662ed7 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T23:16:54Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-f49ce448f05246c58e5743e5ab662ed72023-11-19T08:36:35ZengMDPI AGNanomaterials2079-49912023-08-011317243110.3390/nano13172431In Situ N, O-Dually Doped Nanoporous Biochar Derived from Waste Eutrophic <i>Spirulina</i> for High-Performance SupercapacitorsYihao Geng0Jieni Wang1Xuanyu Chen2Qizhao Wang3Shuqin Zhang4Yijun Tian5Chenxiao Liu6Lin Wang7Zhangdong Wei8Leichang Cao9Jinglai Zhang10Shicheng Zhang11Miami College, Henan University, Kaifeng 475004, ChinaMiami College, Henan University, Kaifeng 475004, ChinaMiami College, Henan University, Kaifeng 475004, ChinaMiami College, Henan University, Kaifeng 475004, ChinaMiami College, Henan University, Kaifeng 475004, ChinaMiami College, Henan University, Kaifeng 475004, ChinaMiami College, Henan University, Kaifeng 475004, ChinaMiami College, Henan University, Kaifeng 475004, ChinaMiami College, Henan University, Kaifeng 475004, ChinaMiami College, Henan University, Kaifeng 475004, ChinaCollege of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, ChinaShanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, ChinaSustainable and high-performance energy storage materials are crucial to address global energy and environmental challenges. In this study, <i>Spirulina platensis</i> was used as the carbon and nitrogen source, and <i>Spirulina</i>-based nanoporous biochar (SNPB) was synthesized through chemical activation using KOH as the activating agent in N<sub>2</sub> atmosphere. SNPB-800-4 was characterized by N<sub>2</sub> adsorption–desorption and XPS, showing a high specific surface area (2923.7 m<sup>2</sup> g<sup>−1</sup>) and abundant heteroatomic oxygen (13.78%) and nitrogen (2.55%). SNPB-800-4 demonstrated an exceptional capacitance of 348 F g<sup>−1</sup> at a current density of 1 A g<sup>−1</sup> and a remarkable capacitance retention of 94.14% after 10,000 cycles at a current density of 10 A g<sup>−1</sup> in 6 M KOH. Notably, symmetric supercapacitors SNPB-800-4//SNPB-800-4 achieved the maximum energy and power densities of 17.99 Wh kg<sup>−1</sup> and 162.48 W kg<sup>−1</sup>, respectively, at a current density of 0.5 A g<sup>−1</sup>, and still maintained 2.66 Wh kg<sup>−1</sup> when the power density was increased to 9685.08 W kg<sup>−1</sup> at a current density of 30 A g<sup>−1</sup>. This work provides an easily scalable and straightforward way to convert waste algae biomass into in situ N, O-dually doped biochar for ultra-high-power supercapacitors.https://www.mdpi.com/2079-4991/13/17/2431algae biomassnanoporous biocharsupercapacitorenergy storage |
| spellingShingle | Yihao Geng Jieni Wang Xuanyu Chen Qizhao Wang Shuqin Zhang Yijun Tian Chenxiao Liu Lin Wang Zhangdong Wei Leichang Cao Jinglai Zhang Shicheng Zhang In Situ N, O-Dually Doped Nanoporous Biochar Derived from Waste Eutrophic <i>Spirulina</i> for High-Performance Supercapacitors Nanomaterials algae biomass nanoporous biochar supercapacitor energy storage |
| title | In Situ N, O-Dually Doped Nanoporous Biochar Derived from Waste Eutrophic <i>Spirulina</i> for High-Performance Supercapacitors |
| title_full | In Situ N, O-Dually Doped Nanoporous Biochar Derived from Waste Eutrophic <i>Spirulina</i> for High-Performance Supercapacitors |
| title_fullStr | In Situ N, O-Dually Doped Nanoporous Biochar Derived from Waste Eutrophic <i>Spirulina</i> for High-Performance Supercapacitors |
| title_full_unstemmed | In Situ N, O-Dually Doped Nanoporous Biochar Derived from Waste Eutrophic <i>Spirulina</i> for High-Performance Supercapacitors |
| title_short | In Situ N, O-Dually Doped Nanoporous Biochar Derived from Waste Eutrophic <i>Spirulina</i> for High-Performance Supercapacitors |
| title_sort | in situ n o dually doped nanoporous biochar derived from waste eutrophic i spirulina i for high performance supercapacitors |
| topic | algae biomass nanoporous biochar supercapacitor energy storage |
| url | https://www.mdpi.com/2079-4991/13/17/2431 |
| work_keys_str_mv | AT yihaogeng insitunoduallydopednanoporousbiocharderivedfromwasteeutrophicispirulinaiforhighperformancesupercapacitors AT jieniwang insitunoduallydopednanoporousbiocharderivedfromwasteeutrophicispirulinaiforhighperformancesupercapacitors AT xuanyuchen insitunoduallydopednanoporousbiocharderivedfromwasteeutrophicispirulinaiforhighperformancesupercapacitors AT qizhaowang insitunoduallydopednanoporousbiocharderivedfromwasteeutrophicispirulinaiforhighperformancesupercapacitors AT shuqinzhang insitunoduallydopednanoporousbiocharderivedfromwasteeutrophicispirulinaiforhighperformancesupercapacitors AT yijuntian insitunoduallydopednanoporousbiocharderivedfromwasteeutrophicispirulinaiforhighperformancesupercapacitors AT chenxiaoliu insitunoduallydopednanoporousbiocharderivedfromwasteeutrophicispirulinaiforhighperformancesupercapacitors AT linwang insitunoduallydopednanoporousbiocharderivedfromwasteeutrophicispirulinaiforhighperformancesupercapacitors AT zhangdongwei insitunoduallydopednanoporousbiocharderivedfromwasteeutrophicispirulinaiforhighperformancesupercapacitors AT leichangcao insitunoduallydopednanoporousbiocharderivedfromwasteeutrophicispirulinaiforhighperformancesupercapacitors AT jinglaizhang insitunoduallydopednanoporousbiocharderivedfromwasteeutrophicispirulinaiforhighperformancesupercapacitors AT shichengzhang insitunoduallydopednanoporousbiocharderivedfromwasteeutrophicispirulinaiforhighperformancesupercapacitors |