Journal
APPLIED SURFACE SCIENCE
Volume 555, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2021.149726
Keywords
Soybean root-derived carbon; One-step carbonization-activation; N,O co-doped; Hierarchical pores; Supercapacitors
Categories
Funding
- Natural Science Foundation of Shanghai [19ZR1413000, 13ZR1411900]
- Shanghai Alliance Plan [LM201881, LM201751]
- Shanghai Leading Academic Discipline Project [B502]
- Shanghai Key Laboratory Project [08DZ2230500]
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The study developed a 3D hierarchical porous carbon derived from natural soybean roots, which exhibited abundant hierarchical pores, large specific surface area, and high specific capacitance. The carbon material showed potential for application as high-performance electrode materials.
3D hierarchical porous soybean root-derived carbon (SRC) is successfully developed from N, O-contained natural soybean root through a convenient one-step carbonization activation route. SRC own abundant hierarchical pores, great specific surface area and considerable N and O elements. As-prepared carbon-based electrode exhibits specific capacitance of 269.4 F g(-1) at 1 A g(-1) and capacitance retention (97% after 20,000 charge and discharge cycles), while assembled symmetric supercapacitor (SSC) has an operating voltage window of 2.0 V and energy density of 23.0 Wh kg(-1) at the power density of 500 W kg(-1). This work makes natural soybean root be utilized as 3D heteroatom-doped carbon and provide another alternative strategy for high-performance electrode materials.
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