Stretchable Transparent Microsupercapacitor from Nanodiamond Decorated Laser-Induced Graphene: Design and Demonstrator

Project Information

Microsupercapacitor

Grant agreement ID: 101024736

DOI

10.3030/101024736

Project closed

EC signature date 29 April 2021

Start date 1 April 2022

End date 31 March 2024

Funded under

• EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions

Total cost

€ 144 980,64

EU contribution

€ 144 980,64

Coordinated by

VYSOKE UCENI TECHNICKE V BRNE
Czechia

Periodic Reporting for period 1 - Microsupercapacitor (Stretchable Transparent Microsupercapacitor from Nanodiamond Decorated Laser-Induced Graphene: Design and Demonstrator)

Reporting period: 2022-04-01 to 2024-03-31

Summary of the context and overall objectives of the project

As global energy demands escalate, traditional storage methods face limitations in capacity, efficiency, and scalability. Supercapacitors offer a promising solution with high power density and rapid charge-discharge cycles, especially when miniaturized for portable electronics and wearables. Our MSCA project addresses this demand by fabricating compact and high-performance supercapacitors and batteries.

These innovations are crucial for modern society, particularly in powering portable electronics and wearables like health monitoring sensors. The project aims to optimize materials and device architectures to enhance energy storage capabilities and ensure reliability under bending and twisting conditions. Ultimately, the goal is to enable practical applications in charging portable electronic devices and health monitoring, advancing energy-efficient solutions for interconnected systems.

Work performed from the beginning of the project to the end of the period covered by the report and main results achieved so far

During my tenure with the MSCA program, I contributed to three key projects, two of which have been published in ACS Nano and the Chemical Engineering Journal, with the third project currently undergoing manuscript preparation.

1) In one project, we utilized a precisely controlled picosecond pulsed laser to develop micro-supercapacitors (micro-SCs) integrated with a force sensing device for monitoring radial artery pulses. These micro-SCs, employing spherical laser-induced MXene-derived oxide nanoparticles on laser-induced graphene (LIG), demonstrated exceptional energy density, mechanical flexibility, and capacitance, showcasing potential for biomedical device fabrication.

2) Another project focused on scalable fabrication of laser-induced graphene fibers (LIGF), followed by atomic layer deposition (ALD) of multivalent vanadium oxide (VOx) films. The resulting VOx-LIGF exhibited high specific areal capacitance and power density, alongside long-term cycling stability, positioning it as a promising candidate for flexible and wearable electronics.

3) Finally, we introduced a novel cathode material involving vanadium carbide and vanadium pentoxide via a single-step laser method. This innovative approach resulted in a significant enhancement in capacity and extended cycling performance, highlighting its potential for applications in wearable bioelectronics.

Progress beyond the state of the art and expected potential impact (including the socio-economic impact and the wider societal implications of the project so far)

Progress Beyond the State of the Art:

1. Innovative Advancements:
- Nano-MXene (Ti3C2Tx) cross-linked with graphene platelets via Ti−O−C covalent bonding using a single-step lasing method.
- Atomic layer deposition of multivalent vanadium oxides (VOx) on 1D laser-induced graphene fibers for flexible energy storage devices.

2. Energy Storage Device Performance:
- Nano-MXene-LIG hybrid achieves ultrahigh energy density (21.16 × 10−3 mWh cm−2) and excellent capacitance (∼100 mF cm−2 @ 10 mV s−1) with long cycle life (91% retention after 10,000 cycles).
- VOx-LIGF demonstrates specific areal capacitance up to 99 mF cm-2 at 1 mA cm2 (aqueous solution, three-electrode cell) and 2 mF cm−2 at 0.25 mA cm−2 (gel electrolyte, two-electrode cell). Additionally, the miniaturized supercapacitor device delivers a power density of 244 mW cm−3 with long-term cycling stability (93% capacitance retention after 11,500 cycles), among the highest achieved for any SC.

3. Breakthrough Contributions:
- Integration of a force sensing device (FSD) with an energy storage unit to monitor human body radial artery pulses.
- Integration of a temperature sensing patch with an aqueous Zn-ion battery unit for real-time human body temperature tracking over 48 hours.

Socio-Economic Impact:

1. Affordable Technology:
- Integration of LIG, MXene, and TMOs into energy storage devices offers cost-effective solutions due to the use of inexpensive raw materials and scalable fabrication processes.

2. Access to Technology:
- Affordable LIG, MXene, and TMO-based energy storage devices enhance access to technology, particularly in underserved communities, empowering them with low-cost alternatives for various applications.

3. Job Creation and Economic Growth:
- Widespread adoption of these devices stimulates job creation and economic growth, establishing manufacturing facilities and R&D centers, thereby contributing to local and national economies.

In essence, the adoption of LIG, MXene, and TMO-based energy storage devices for flexible electronics brings profound socio-economic benefits, including increased access to technology, job creation, economic growth, reduced operational costs, environmental sustainability, and innovation.

1st page of my publications