A bean catching double pigeons: Sonication assisted modification of Nb2C MXenes composites by O-doping porous biomass-carbons for supercapacitors and zinc-ion batteries
Release time:2023-10-19
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DOI number:10.1016/j.est.2023.107334
Journal:Journal of Energy Storage
Key Words:Nb2C MXenes, O-doped biomass‑carbons, Sonication assisted modification, Symmetric supercapacitors, Aqueous zinc ion batteries
Abstract: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.
First Author:Wei Yang
Indexed by:Journal paper
Correspondence Author:Jing Wang
Document Code:107334
Discipline:Engineering
Issue:65
Translation or Not:no
Date of Publication:2023-04-02
Included Journals:SCI
