Stable perovskite photocathodes for efficient hydrogen evolution in acidic and basic conditions

Khamgaonkar, Saikiran; Chen, Qiaoyun; Musselman, Kevin; Maheshwari, Vivek

doi:10.1039/d3ta04226j

Cited by 3 publications

(2 citation statements)

References 55 publications

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“…As summarized in Figure 3b, their corresponding Tafel slopes are 39.9 and 40.9 mV/dec. Also, the overpotentials and the measuring environment are compared with those in the literature (Table S1 [56][57][58][59][60][61][62][63][64]). It is noted that most Pt exists with the oxidation state of Pt 0 under the (HER) conditions.…”

Section: Electrochemical Properties Of Thin-film Electrodesmentioning

confidence: 99%

Kinetic Analysis of Oxygen Evolution on Spin-Coated Thin-Film Electrodes via Electrochemical Impedance Spectroscopy

Lin,

Li,

Chang

et al. 2023

Coatings

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Sustainable and renewable energy technologies have attracted significant attention for reducing greenhouse emissions in the shift from fossil fuels. The production of green hydrogen from water electrolysis is considered an environmentally friendly strategy for a decarbonized economy. We examine the activities of the hydrogen and oxygen evolution reactions (HER and OER) using spin-coated thin-film electrodes with Pt/C and IrO2 nano-electrocatalysts under acidic conditions. The nano-electrocatalysts are characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), and atomic force microscopy (AFM). The electrocatalytic activities of nanoscale Pt/C and IrO2 are close to those of commercial Pt/C and superior to commercial IrO2, resulting in improved overall water splitting performance. Furthermore, the OER kinetics analysis using the IrO2 electrode is conducted using EIS measurements with distribution of relaxation time (DRT) analysis, resulting in a comparable exchange current density to that from the Tafel slope method (6.7 × 10−2 mA/cm2 versus 5.1 × 10−2 mA/cm2), demonstrating the validity of the kinetics analysis. This work provides a general strategy for preparing novel and highly active OER electrode materials for water electrolysis.

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Section: Electrochemical Properties Of Thin-film Electrodesmentioning

confidence: 99%

Kinetic Analysis of Oxygen Evolution on Spin-Coated Thin-Film Electrodes via Electrochemical Impedance Spectroscopy

Lin,

Li,

Chang

et al. 2023

Coatings

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show abstract

“…12 Recently, the development of lead halide perovskite (LHP)-based integrated photoelectrodes has helped overcome these drawbacks and has facilitated unbiased PEC water splitting, resulting in the achievement of a high solar-to-hydrogen (STH) efficiency exceeding 13% with high stability, encouraged by various encapsulation methods. 13–20 In particular, the solution processability of LHPs renders them suitable for large-scale and low-cost fabrication, as extensively pursued in the field of photovoltaics. 21–23 However, the fabrication of large-area LHP photoelectrodes has not been well investigated in the field of PEC water splitting.…”

Section: Introductionmentioning

confidence: 99%

Large-area all-perovskite-based coplanar photoelectrodes for scaled-up solar hydrogen production

Jeong,

Jang,

Yun

et al. 2024

Energy Environ. Sci.

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Engineering and Design of Halide Perovskite Photoelectrochemical Cells for Solar‐Driven Water Splitting

Khamgaonkar,

Leudjo Taka,

Maheshwari

2024

Adv Funct Materials

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Photoelectrochemical cells (PEC) use solar energy to generate green hydrogen by water splitting and have an integrated device structure. Achieving high solar‐to‐hydrogen conversion (STH) efficiency along with a long operational lifetime in these cells is crucial for the production of low‐cost green hydrogen as a viable energy source. Several functional components, such as photo absorber, charge transport, and catalyst layers are interfaced in these cells to form a compact monolithic device. In this review, therefore, the engineering and design of the individual components of these cells, the interplay between them, and their interfaces are discussed in detail, as these factors determine the overall performance of the cells. The main emphasis is on halide perovskite (HP) photo absorbers, which have emerged as promising materials for use in these cells due to their superior optoelectronic properties. Recent advances in the development of efficient and stable perovskite‐based cells are highlighted and reviewed. The design of catalysts for water splitting and the effect of factors such as pH and supporting cations are also examined. Finally, the scientific challenges and future directions for designing perovskite‐based photoelectrochemical cells are discussed. This review can help researchers further advance this technology toward commercial production of green hydrogen.

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Stable perovskite photocathodes for efficient hydrogen evolution in acidic and basic conditions

Abstract: Catalyst design with polymer additive engineering is used to develop highly efficient and stable perovskite-based photocathodes for hydrogen evolution by water splitting.

Cited by 3 publications

References 55 publications

Kinetic Analysis of Oxygen Evolution on Spin-Coated Thin-Film Electrodes via Electrochemical Impedance Spectroscopy

Kinetic Analysis of Oxygen Evolution on Spin-Coated Thin-Film Electrodes via Electrochemical Impedance Spectroscopy

Large-area all-perovskite-based coplanar photoelectrodes for scaled-up solar hydrogen production

Engineering and Design of Halide Perovskite Photoelectrochemical Cells for Solar‐Driven Water Splitting

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