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Qing Wang¹, Yuanxiao Qu¹, Yuxun Yuan¹

¹Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China.

Advanced materials (Deerfield Beach, Fla.)

|March 3, 2025

概括

研究人员开发了一种分子重建方法,以增强生物质多孔碳的机械强度,该碳来源于ramie. 这种改进的前体产生高度稳定的多孔碳,用于先进的储能应用.

科学领域:

材料科学材料科学材料科学
储能储能储能储能储能储能
电化学电化学电化学

背景情况:

生物质多孔碳对储能充满希望,但由于软前体,它通常具有较低的机械强度.
这种机械弱点导致孔隙结构不稳定,并降低了储能器件的性能.

研究的目的:

开发一种方法来提高生物质前体的机械强度,用于多孔碳.
提高由软生物质材料制成的多孔碳的稳定性和性能.

主要方法:

使用分子重建方法通过调节键来修改无序的拉米前体 (DRPs).
修改后的前体被用于合成多孔拉米碳 (PRC).
现场电化学红外光谱法用于研究充放电周期期间的离子吸附.

主要成果:

重建的DRP表现出明显更高的机械强度和密度.
由此产生的PRC与普通拉米碳相比,具有更高的特定表面积 (2404.36 m2 g-1).
基于中国的超级电容器表现出高特异电容 (39.35 F g-1 在 1 A g-1 时) 和优异的容量保留 (89.5% 在 40 A g-1 时).

结论:

分子重建方法有效地提高了生物质前体的机械性能.
开发的多孔拉米碳为超级电容器提供了卓越的稳定性和电化学性能.
这种方法促进在商业活性炭生产中使用软生物质材料.

关键词:

三维混乱的拉米在现场的电化学红外光谱学.分子重建分子重建多孔的拉米碳碳.结构稳定性结构稳定性

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