从榴莲中提取的氧化多孔硬碳,用于高性能离子储存
Jianliang Guo1,2, Zhihua Sun2, Wenzheng Zhu2
1National Energy Group Science and Technology Research Institute Co. Ltd Nanjing Jiangsu 210008 China 12068942@ceic.com.
RSC advances
|February 18, 2026
概括
研究人员从榴莲中开发出多孔硬碳,用于离子电池 (SIB). 这种可持续的阳极材料提供了高容量和更好的性能,为具有成本效益的SIB应用铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 可持续能源 可持续能源
背景情况:
- 硬碳是离子电池 (SIB) 的一个有前途的阳极材料,因为它具有有利的电化学特性.
- 目前的局限性包括低储存能力和与前体碳化产量相关的高成本.
- 开发具有成本效益和高性能的硬碳阳极对于SIB商业化至关重要.
研究的目的:
- 从丰富的生物质前体,榴贝中开发一个多孔的硬碳阳极,用于SIBs.
- 研究合成条件,特别是碳化温度对材料结构和电化学性能的影响.
- 展示一种可持续和可扩展的方法来生产高性能SIB阳极.
主要方法:
- 来自榴贝的多孔硬碳 (DSHC) 是通过酸洗和二次化来合成的.
- 碳化温度被优化,重点是以700°C合成的DSHC (DSHC700).
- 评估了SIB中作为阳极的电化学性能,包括容量,循环稳定性和速率能力.
主要成果:
- 在25 mA g-1.1的100个循环后,DSHC700表现出297.2 mAh g-1的高特异容量.
- 该材料具有合适的石墨层间距 (0.382 nm) 和丰富的多孔结构.
- 优化层间间距 (归因于氧气兴奋剂) 和多孔性增强了Na+活性位点,缩短了扩散通路,并改善了电解质运输.
结论:
- 杜里安贝衍生硬碳 (DSHC) 为离子电池提供了可行的高性能阳极材料.
- 合成方法提供了一种简单而可持续的方法,用于利用生物质用于储能应用.
- 使用生物质前体和优化碳化的设计策略具有开发先进的储能材料的潜力.
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