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August 22, 2026ACS Applied Nano Materials

(Fe,Ni,Co)Se/MoSe2 Polymetallic Nanohybrids: Synergistic Dual Regulation for Enhanced Hybrid Supercapacitor Performance

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Authors

JKJiawei KouHGHao GuoYHYaxuan Hu

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Overview

Experimental study demonstrates enhanced electrochemical energy storage using polymetallic selenide nanohybrids, highlighting a promising pathway for advanced hybrid supercapacitors.

Key Points

  • To overcome poor conductivity and low capacitive performance in metal-organic framework derivatives by engineering hollow polymetallic selenide nanohybrids via dual intercalation and selenization.
  • Etched MIL101(Fe) templates using nickel and cobalt nitrates to construct hollow nanostructures.
  • Synthesized multimetal selenides ((Fe,Ni,Co)Se/MoSe2) through molybdate ion intercalation followed by high-temperature selenization.
  • Tested electrochemical kinetics in a three-electrode cell and evaluated device metrics in a two-electrode hybrid supercapacitor paired with an activated carbon anode.
  • The FNCLM-0.5/S-500 electrode delivered a specific capacitance of 2368.99 F·g–1 at a current density of 1 A·g–1 in three-electrode testing.
  • The assembled hybrid supercapacitor operated stably across a 1.53 V window, yielding an energy density of 100.34 Wh·kg–1 at a power density of 764.98 W·kg–1.
  • The device exhibited 75% capacity retention with nearly 100% Coulombic efficiency after 6,000 cycles and continuously powered a timer for nearly 20 minutes.

Cite This Study

Kou et al. (2026) studied this question.

synapsesocial.com/papers/6a895f87ca7ade938187e3cehttps://doi.org/10.1021/acsanm.6c02610
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