The climatic response of thermally integrated photovoltaic–electrolysis water splitting using Si and CIGS combined with acidic and alkaline electrolysis

Pehlivan, İlknur Bayrak; Malm, Ulf; Neretnieks, P.; Glüsen, Andreas; Müller, Martin; Welter, Katharina; Haas, Sabine; Calnan, Sonya; Canino, Andrea; Milazzo, Giovanni; Privitera, S.; Lombardo, S.; Stolt, Lars; Edoff, Marika; Edvinsson, Tomas

doi:10.1039/d0se01207f

Cited by 16 publications

(19 citation statements)

References 22 publications

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“…Efforts to understand the effects of varying weather conditions on integrated water splitting devices on a yearly basis have only started recently. 3,17,37,38 For example, Kemppainen et al investigated the effect of ambient conditions on the operation of thermally coupled PV-electrolysis systems based on silicon heterojunction photovoltaic cells and an alkaline electrolyzer. 17 For this device, an STH efficiency ranging between 3.4 and 10% was found, which was mainly influenced by the device operating temperature.…”

Section: Introductionmentioning

confidence: 99%

The annual-hydrogen-yield-climatic-response ratio: evaluating the real-life performance of integrated solar water splitting devices

Kölbach

Höhn

Rehfeld

et al. 2022

Preprint

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Integrated solar water splitting devices that produce hydrogen without the use of power inverters operate outdoors and are hence exposed to varying weather conditions. As a result, they might sometimes work at non- optimal operation points below or above the maximum power point of the photovoltaic component, which would directly translate into efficiency losses. Up until now, however, no common parameter describing and quantifying this and other real-life operating related losses (e.g. spectral mismatch) exists in the community. Therefore, the annual- hydrogen-yield-climatic-response (AHYCR) ratio is introduced as a figure of merit to evaluate the outdoor performance of integrated solar water splitting devices. This value is defined as the ratio between the real annual hydrogen yield and the theoretical yield assuming the solar-to-hydrogen device efficiency at standard conditions. This parameter is derived for an exemplary system based on state-of-the-art AlGaAs//Si dual-junction solar cells and an anion exchange membrane electrolyzer using hourly resolved climate data from a location in southern California and from reanalysis data of Antarctica. This work will help to evaluate, compare and optimize the climatic response of solar water splitting devices in different climate zones.

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Section: Introductionmentioning

confidence: 99%

The annual-hydrogen-yield-climatic-response ratio: evaluating the real-life performance of integrated solar water splitting devices

Kölbach

Höhn

Rehfeld

et al. 2022

Preprint

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“…To provide an applicable system to produce solar hydrogen in practice, however, a full system needs to be constructed. Here, a directly coupled electrolyzer to the PV part can reduce losses from grid-losses and DC-DC conversion and enables a thermal exchange, which leads to simultaneous cooling of the PV and heating of the electrolyzer, which is beneficial for the total reaction ( Bayrak Pehlivan et al, 2020 ). Integrated PV-electrolysis devices may therefore have advantages over wired PV-electrolysis due to the thermal exchange and as it can be constructed without inverters and longer wires, reducing Ohmic transport losses ( Kirner et al., 2016 ; Welter et al., 2017 ).…”

Section: Introductionmentioning

confidence: 99%

NiMoV and NiO-based catalysts for efficient solar-driven water splitting using thermally integrated photovoltaics in a scalable approach

et al. 2021

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Summary In this work, a trimetallic NiMoV catalyst is developed for the hydrogen evolution reaction and characterized with respect to structure, valence, and elemental distribution. The overpotential to drive a 10 mA cm −2 current density is lowered from 94 to 78 mV versus reversible hydrogen electrode by introducing V into NiMo. A scalable stand-alone system for solar-driven water splitting was examined for a laboratory-scale device with 1.6 cm 2 photovoltaic (PV) module area to an up-scaled device with 100 cm 2 area. The NiMoV cathodic catalyst is combined with a NiO anode in alkaline electrolyzer unit thermally connected to synthesized (Ag,Cu) (In,Ga)Se 2 ((A)CIGS) PV modules. Performance of 3- and 4-cell interconnected PV modules, electrolyzer, and hydrogen production of the PV electrolyzer are examined between 25°C and 50°C. The PV-electrolysis device having a 4-cell (A)CIGS under 100 mW cm −2 illumination and NiMoV-NiO electrolyzer shows 9.1% maximum and 8.5% averaged efficiency for 100 h operation.

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“…Both coupling and scaling are crucial inter-related issues for the minimization of energy losses in the PV-EC system and increasing its STH. Many studies have examined the coupling of various PV and EC devices, [4,10,14,16,18,22,23,[26][27][28][29][30][31][32][33][34][35][36][37] their mutual scaling, [4,13,28,32,[38][39][40][41][42] and the limits of STH. [11,21,[43][44][45] In most cases, PV and EC devices are developed separately and then merged at a later stage.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Limits of Solar‐to‐Hydrogen Efficiency from Polarization Curves of the Electrochemical Cells

et al. 2021

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The climatic response of thermally integrated photovoltaic–electrolysis water splitting using Si and CIGS combined with acidic and alkaline electrolysis

Abstract: The Horizon 2020 project PECSYS aims to build a large area demonstrator for hydrogen production from solar energy via integrated photovoltaic (PV) and electrolysis systems of different types. In this...

Cited by 16 publications

References 22 publications

The annual-hydrogen-yield-climatic-response ratio: evaluating the real-life performance of integrated solar water splitting devices

The annual-hydrogen-yield-climatic-response ratio: evaluating the real-life performance of integrated solar water splitting devices

NiMoV and NiO-based catalysts for efficient solar-driven water splitting using thermally integrated photovoltaics in a scalable approach

Prediction of Limits of Solar‐to‐Hydrogen Efficiency from Polarization Curves of the Electrochemical Cells

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