Dies ist unsere neueste Auswahl an weltweiten Veröffentlichungen und Patenten in englischer Sprache zum Thema Elektronik, zwischen vielen wissenschaftlichen Online-Zeitschriften, klassifiziert und konzentriert auf Elektronik, Widerstand, Kondensator, Diode, Transistor, PCB und Mikrocontroller.
A Review on Laser-Induced Graphene-Based Electrocatalysts for the Oxygen Reduction Reaction in Electrochemical Energy Storage and Conversion
Published on 2025-07-10 by Giulia Massaglia, Marzia Quaglio @MDPI
Abstract: The increasing demand for efficient and sustainable energy conversion technologies has driven extensive research into alternative electrocatalysts for the oxygen reduction reaction (ORR). Platinum-based catalysts, while highly efficient, suffer from high costs, scarcity, and long-term instability Laser-Induced Graphene (LIG) has recently attracted considerable interest as an effective metal-free electrocatalyst for oxygen reduction reaction (ORR), owing to its remarkable electrical conductivity,[...]
Our summary: A review on the synthesis, properties, and performance of Laser-Induced Graphene-based electrocatalysts for the oxygen reduction reaction. Discussion on heteroatom doping and functionalization techniques. Highlighting challenges and future perspectives for LIG-based ORR catalysts.
Laser-Induced Graphene, Electrocatalysts, Oxygen Reduction Reaction, Energy Storage
Publication
Photovoltaic cells with bypass diodes
Patent published on the 2025-06-17 in US under Ref US12336305 by TANDEM PV [US] (Bailie Colin David [us], Eberspacher Chris [us])
Abstract: Embodiments of the disclosure include a photovoltaic device comprising a plurality of photovoltaic cells coupled in series. The photovoltaic cells comprising a first contact layer, a first charge transport layer (CTL) disposed over the first contact layer, an absorber layer disposed over the first CTL, a second CTL disposed over the absorber layer; and a second contact layer disposed over the second CTL. Each photovoltaic cell in the plurality of photovoltaic cells includes a diode region, the d[...]
Our summary: Photovoltaic device with bypass diodes, series-coupled photovoltaic cells, diode region with feature extending through layers.
Photovoltaic cells, bypass diodes, photovoltaic device, charge transport layer
Patent
Using the Harmony Search Algorithm
Published on 2025-03-10 by Gulcihan Ozdemir, Pierluigi Siano, Smitha Joyce Pinto, Mohammed AL-Numay @MDPI
Abstract: A coordinated control for the volt-var optimization (VVO) problem is presented using load tap changer transformers, voltage regulators, and capacitor banks with the integration of a PV-based microgrid. The harmony search (HS) algorithm, which is a metaheuristic-based optimization algorithm, was used to determine global optimum settings of related devices to operate efficiently under changing conditions. The major objectives of volt-var optimization were to reduce power losses, peak power demands[...]
Our summary: Coordinated control for VVO using HS algorithm to optimize settings of devices, reduce power losses, peak power demands, and voltage variations in distribution circuit, mixed integer nonlinear problem with discrete and continuous variables, verified using IEEE 13-node test circuit, significant reduction in active power loss, peak power demand, and voltage fluctuation.
Harmony Search Algorithm, Volt-Var Optimization, Metaheuristic-Based Optimization, PV-Based Microgrid
Publication
Design and Experimental Validation of a Battery/Supercapacitor Hybrid Energy Storage System Based on an Adaptive LQG Controller
Published on 2024-12-25 by Jhoan Alejandro Montenegro-Oviedo, Carlos Andres Ramos-Paja, Martha Lucia Orozco-Gutierrez, Edinson Franco-Mej�a, Sergio Ignacio Serna-Garc�s @MDPI
Abstract: Hybrid energy storage systems (HESSs) are essential for adopting sustainable energy sources. HESSs combine complementary storage technologies, such as batteries and supercapacitors, to optimize efficiency, grid stability, and demand management. This work proposes a semi-active HESS formed by a battery connected to the DC bus and a supercapacitor managed by a Sepic/Zeta converter, which has the aim of avoiding high-frequency variations in the battery current on any operation condition. The conver[...]
Our summary: Sustainable energy sources require efficient hybrid energy storage systems. This work introduces a semi-active HESS with an adaptive LQG controller that outperforms traditional PI and LQG controllers. The proposed system optimizes grid stability by efficiently managing high and low-frequency components of battery power. Experimentally validated control strategy ensures system adaptability to changing operating conditions.
hybrid energy storage systems, adaptive LQG controller, battery, supercapacitor, Sepic/Zeta converter, optimal state observer, control strategy
Publication
