A bean catching double pigeons: Sonication assisted modification of Nb2C MXenes composites by O-doping porous biomass-carbons for supercapacitors and zinc-ion batteries
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DOI码：10.1016/j.est.2023.107334
发表刊物：Journal of Energy Storage
关键字：Nb2C MXenes, O-doped biomass‑carbons, Sonication assisted modification, Symmetric supercapacitors, Aqueous zinc ion batteries
摘要：MXenes materials are novel promising candidates for the next generation energy storage devices. In this work, we designed a facile avenue using biomass derived carbons (PCarbons) and Nb2C MXenes as raw materials via sonication treatment to obtain Nb2C-PCarbons composites (Nb2C-PCarbons CPs). As a result, the prepared Nb2CPCarbons CPs achieved a relative high specific capacitance up to 465.6 F⋅g 1 in the three-electrode system with 6 M KOH electrolyte. The fabricated symmetric supercapacitors (SSCs) displayed the ultra-high energy density (126.9 Wh⋅kg 1) in ion liquid electrolyte and the long cycling life after 10,000 cycles. Meanwhile, the obtained Nb2C-PCarbons CPs were also applied as cathode materials in the aqueous zinc ion batteries (AZIBs), achieving the maximum discharge specific capacity of ca. 239.7 mAh⋅g 1 with good cycling stability. Thus, our work provides an efficient method to modify the MXenes as bi-functional materials for the potential high-value utilization in SSCs and AZIBs.
第一作者：Wei Yang
论文类型：期刊论文
通讯作者：Jing Wang
论文编号：107334
学科门类：工学
期号：65
是否译文：否
发表时间：2023-04-02
收录刊物：SCI
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