Issue 6, 2023

Rational design of a flexible inorganic composite membrane with an interconnected porous structure as a high-performance lithium ion capacitor electrode

Abstract

High-performance lithium-ion capacitors (LICs) have received great attention as a promising power source in the field of portable and wearable electronic devices. However, research on high energy-storage properties and flexibility of LIC electrodes is scarce. Herein, we proposed a novel flexible CuxONW/graphene/AgNW (CGA) composite membrane with a uniformly interconnected porous structure for LIC electrodes. Without destroying the CuNW/GO/AgNW membrane structure, the synergism of multiple components (Cu, Cu2O, and CuO) in the CuxONWs and the bonding strength between the three materials can be accurately controlled to achieve a high-performance energy storage electrode. The symmetrical solid-state supercapacitor (SSS) based on CGA-225 membranes exhibited good flexibility (a bending radius of 10 mm) and remarkable electrochemical performance. The LIC assembled with prelithiated CGA-225 presented a large potential window (1–4.5 V), high energy density/power density (maximum, 166 W h kg−1/3,747 W kg−1), and excellent cycling stability (92.6% of the initial capacitance after 10 000 cycles at 20 mA cm−2).

Graphical abstract: Rational design of a flexible inorganic composite membrane with an interconnected porous structure as a high-performance lithium ion capacitor electrode

Supplementary files

Article information

Article type
Paper
Submitted
22 Okt. 2022
Accepted
12 Janv. 2023
First published
12 Janv. 2023

J. Mater. Chem. C, 2023,11, 2345-2354

Rational design of a flexible inorganic composite membrane with an interconnected porous structure as a high-performance lithium ion capacitor electrode

X. Li, Z. Yin, Y. Hou, C. Yin and Z. Yin, J. Mater. Chem. C, 2023, 11, 2345 DOI: 10.1039/D2TC04482J

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