Small dimension Li-ion microbatteries are of great interest for embedded microsystems and on-chip electronics. However, the deposition of fully crystallized cathode thin film generally requires high temperature synthesis or annealing, incompatible with microfabrication processes of integrated Si devices. In this work, a low temperature...
-
June 2021 (v1)Journal articleUploaded on: December 4, 2022
-
November 2022 (v1)Journal article
The rapid advancement of the Internet of things (IoT) with applications across various sectors urges the development of miniaturized energy-storage devices that can harvest or deliver energy with high power capabilities. While micro-supercapacitors can meet the high-power requirements of ubiquitous sensors connected to IoT networks, their low...
Uploaded on: December 3, 2022 -
2021 (v1)Journal article
Three-dimensional (3D) electrodes with improved areal energy have become increasingly important for microscale energy storage at the dawn of the Internet of Things. At its heart are a plethora of microelectronic devices that require embedded energy harvesters and energy storage components to ensure autonomy. In this study, we develop porous...
Uploaded on: December 4, 2022 -
May 2021 (v1)Journal article
Hydrogen and its interaction with metal oxide surfaces is of major importance for a wide range of research and applied fields spanning from catalysis, energy storage, microelectronics, to metallurgy. This paper reviews state of the art of first principles calculations on the well-known ruthenium oxide (RuO2) surface in its (110) orientation and...
Uploaded on: December 3, 2022 -
July 31, 2024 (v1)Journal article
Hydrated ruthenium dioxide (RuO2 ) stands out as the archetype of pseudocapacitive materials, renowned for its outstanding capacitance and remarkable stability for supercapacitor applications. Herein, we introduce a model of amorphous low-density hydrous RuO2 for supercapacitors, utilizing a combined approach of ab initio molecular dynamics...
Uploaded on: January 13, 2025 -
December 2022 (v1)Journal article
3D porous electrodes have been considered as a new paradigm shift for increasing the energy storage of pseudocapacitive micro-supercapacitors for on-chip electronics. However, the conformal deposition of active materials is still challenging when highly porous structures are involved. In this work, we have investigated the atomic layer...
Uploaded on: December 3, 2022 -
April 2022 (v1)Journal article
To power the next generation of miniaturized electronic devices, the energy storage capability of Li-ion micro-batteries must be significantly improved and the fabrication of high-performance 3D electrodes is mandatory. Here we show how to carefully match the design of efficient 3D scaffold based on metallic porous template with the deposition...
Uploaded on: December 3, 2022 -
June 26, 2020 (v1)Journal article
Long-term stability is one of the most desired functionalities of energy storage microdevices for wearable electronics, wireless sensor networks and the upcoming internet of things. Although Li-ion microbatteries have become the dominant energy-storage technology for on-chip electronics, the extension of lifetime of these components remains a...
Uploaded on: December 4, 2022 -
May 2022 (v1)Journal article
Microsupercapacitor electrodes with 3D architectures have drawn increasing interest in recent years due to their better energetic performances while maintaining a reduced footprint occupancy. Here, we report two different strategies to realize highly porous scaffolds of RuO2 on Si wafers, with areal enlargement factors exceeding 13000 cm 2 /cm...
Uploaded on: December 3, 2022 -
May 4, 2020 (v1)Journal article
With its huge pseudocapacitance and excellent stability, ruthenium dioxide (RuO2) is considered to be one of the best electrode materials for supercapacitors. However, such properties are only obtained with hydrous RuO2 in an amorphous phase, limiting the range of possible deposition techniques. Herein we report a detailed understanding of...
Uploaded on: December 4, 2022 -
June 2022 (v1)Journal article
The development of an efficient photocatalyst capable of producing enough hydrogen for applications in everyday life under direct sunlight exposure is still challenging. In this work, a new concept for a three-dimensional microstructured photocatalyst is proposed, in which a standard deep-reactive ion etching process allows for the...
Uploaded on: December 3, 2022 -
November 2023 (v1)Journal article
The enhanced areal energy of three-dimensional (3D) micro-supercapacitors has made these miniaturized energy-storage components increasingly important at the dawn of the Internet of Things. Although ultrahigh-capacitances have been obtained with Ru-based pseudocapacitive materials, their substitution with abundant non-noble transition metals is...
Uploaded on: October 11, 2023 -
November 2020 (v1)Journal article
This paper reports the synergetic effects of UV and visible light irradiation on the photocatalytic activity of well-defined nanostructures composed of TiO2 films and Au nanoparticles. New insights into the electronic as well as the chemical processes that drive water decomposition were obtained by varying the position of the NPs on top and at...
Uploaded on: December 4, 2022 -
November 19, 2020 (v1)Journal article
This paper reports the synergetic effects of UV and visible light irradiation on the photocatalytic activity of well-defined nanostructures composed of TiO2 films and Au nanoparticles (NPs). New insights into electronic as well as chemical processes that drive water decomposition were obtained by varying the position of the NPs on top and at...
Uploaded on: December 4, 2022