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Nitrogen and Sulfur Co-doped Hierarchical Porous Biochar Derived from the Pyrolysis of Mantis Shrimp Shell for Supercapacitor Electrodes
Energy & Fuels ( IF 5.2 ) Pub Date : 2021-01-11 , DOI: 10.1021/acs.energyfuels.0c04042 Shuqiong Huang 1 , Yan Ding 1 , Yunchao Li 1 , Xinhong Han 1 , Bo Xing 1 , Shurong Wang 1
Energy & Fuels ( IF 5.2 ) Pub Date : 2021-01-11 , DOI: 10.1021/acs.energyfuels.0c04042 Shuqiong Huang 1 , Yan Ding 1 , Yunchao Li 1 , Xinhong Han 1 , Bo Xing 1 , Shurong Wang 1
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The preparation of high-value biochar as a supercapacitor is a promising way for biomass utilization. In this work, a self-activation method was proposed to prepare nitrogen and sulfur co-doping hierarchical porous biochar by using mantis shrimp shell as carbon, nitrogen, and sulfur precursors. The porosity and surface chemical properties of biochar were adjusted upon different temperatures. It was found that the obtained biochar had a dendritic and uniform morphology, in which micro-, meso-, and macropores were interconnected regularly in the structure, and the nitrogen and sulfur heteroatoms were successfully homogeneously introduced into the carbon frameworks. On the basis of electrochemical tests, novel shell biochar with an activation temperature of 750 °C demonstrated the highest specific capacitance, which was 201 F g–1 at a current density of 1 A g–1 in a 6 M KOH electrolyte, due to the large BET surface area of 401 m2 g–1, and high nitrogen (8.2 wt %) and sulfur content (1.16 wt %). The in situ template approach from natural biomass provided tremendous potential for the active electrode materials of supercapacitors.
中文翻译：
螳螂虾壳热解法制得的超级电容器电极氮和硫共掺杂多级多孔生物炭
高价值生物炭作为超级电容器的制备是一种有前途的生物质利用方式。在这项工作中，提出了一种自活化方法，以螳螂虾壳为碳，氮和硫的前体来制备氮和硫共掺杂的分级多孔生物炭。在不同温度下调节生物炭的孔隙率和表面化学性质。发现所获得的生物炭具有树枝状且均匀的形态，其中微孔，中孔和大孔在结构中规则地互连，并且氮和硫杂原子被成功地均匀地引入碳骨架中。根据电化学测试，活化温度为750°C的新型贝壳生物炭显示出最高的比电容，为201 F g–1在6 M KOH电解质中的电流密度为1 A g –1时，由于BET表面积大401 m 2 g –1，并且氮（8.2 wt％）和硫含量（1.16 wt％）高。天然生物质的原位模板方法为超级电容器的活性电极材料提供了巨大的潜力。
更新日期：2021-01-21
中文翻译：
螳螂虾壳热解法制得的超级电容器电极氮和硫共掺杂多级多孔生物炭
高价值生物炭作为超级电容器的制备是一种有前途的生物质利用方式。在这项工作中，提出了一种自活化方法，以螳螂虾壳为碳，氮和硫的前体来制备氮和硫共掺杂的分级多孔生物炭。在不同温度下调节生物炭的孔隙率和表面化学性质。发现所获得的生物炭具有树枝状且均匀的形态，其中微孔，中孔和大孔在结构中规则地互连，并且氮和硫杂原子被成功地均匀地引入碳骨架中。根据电化学测试，活化温度为750°C的新型贝壳生物炭显示出最高的比电容，为201 F g–1在6 M KOH电解质中的电流密度为1 A g –1时，由于BET表面积大401 m 2 g –1，并且氮（8.2 wt％）和硫含量（1.16 wt％）高。天然生物质的原位模板方法为超级电容器的活性电极材料提供了巨大的潜力。
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