Rational design of a flexible inorganic composite membrane with an interconnected porous structure as a high-performance lithium ion capacitor electrode. Issue 6 (30th January 2023)

• Record Type: Journal Article
• Authors: Li, Xingsheng; Yin, Zhen-Hao; Hou, Yue; Yin, Chengri; Yin, Zhenxing
• Is Part Of: Journal of materials chemistry. Volume 11:Issue 6(2023)
• Page Start: 2345
• Page End: 2354
• Publication Date: 2023-01-30
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d2tc04482j
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : The synergistic effect of multiple components (Cu, Cu2 O and CuO) in Cu x ONWs and the high bonding strength between the three materials in a CGA membrane anode markedly improve the capacitance and cycling performance of lithium-ion capacitors. 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 Cu x ONW/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, Cu2 O, and CuO) in the Cu x ONWs 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 ).