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Water-Resistant Perovskite-Inspired Copper/Silver Pnictohalide Nanocrystals for Photoelectrochemical Water Splitting

Liu, Maning LU orcid ; Grandhi, G Krishnamurthy ; Al-Anesi, Basheer ; Ali-Löytty, Harri ; Lahtonen, Kimmo ; Grisorio, Roberto and Vivo, Paola (2023) In Electrochimica Acta 462.
Abstract
Lead halide perovskites (LHPs) photoelectrodes for photoelectrochemical (PEC) water splitting are promising candidates for solar-to-fuel conversion. However, the poor stability of LHPs in aqueous electrolyte media, together with the toxicity of lead, restricts the practical application of LHP photoelectrodes. Herein, we report the first-ever colloidal synthesis of quaternary Cu1.4Ag0.6BiI5 nanocrystals (NCs), a new lead-free perovskite-inspired nanomaterial, by a facile hot injection method. The Cu1.4Ag0.6BiI5 NCs exhibit an extraordinary water resistance, due to the well-defined coverage of hydrophobic ligands on the surface of NCs with unique layered cation disordered structure. Together with their high structural stability, the... (More)
Lead halide perovskites (LHPs) photoelectrodes for photoelectrochemical (PEC) water splitting are promising candidates for solar-to-fuel conversion. However, the poor stability of LHPs in aqueous electrolyte media, together with the toxicity of lead, restricts the practical application of LHP photoelectrodes. Herein, we report the first-ever colloidal synthesis of quaternary Cu1.4Ag0.6BiI5 nanocrystals (NCs), a new lead-free perovskite-inspired nanomaterial, by a facile hot injection method. The Cu1.4Ag0.6BiI5 NCs exhibit an extraordinary water resistance, due to the well-defined coverage of hydrophobic ligands on the surface of NCs with unique layered cation disordered structure. Together with their high structural stability, the Cu1.4Ag0.6BiI5 NCs-based photoanode displays a maximum photocurrent density of 4.62 mA cm−2 at 1.23 V vs. reversible hydrogen electrode, and an applied bias photo-to-current efficiency of 2.94% without any protective layer. Our study highlights the great potential of lead-free Cu1.4Ag0.6BiI5 NCs-based photoelectrodes for a wide range of low-cost, eco-friendly, and high-performance PEC applications. (Less)
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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Electrochimica Acta
volume
462
article number
142734
publisher
Elsevier
external identifiers
  • scopus:85161905739
ISSN
0013-4686
DOI
10.1016/j.electacta.2023.142734
language
English
LU publication?
yes
id
dc725e70-76df-4a87-bc12-e9baf5512254
date added to LUP
2023-06-14 20:58:27
date last changed
2025-10-14 10:56:51
@article{dc725e70-76df-4a87-bc12-e9baf5512254,
  abstract     = {{Lead halide perovskites (LHPs) photoelectrodes for photoelectrochemical (PEC) water splitting are promising candidates for solar-to-fuel conversion. However, the poor stability of LHPs in aqueous electrolyte media, together with the toxicity of lead, restricts the practical application of LHP photoelectrodes. Herein, we report the first-ever colloidal synthesis of quaternary Cu1.4Ag0.6BiI5 nanocrystals (NCs), a new lead-free perovskite-inspired nanomaterial, by a facile hot injection method. The Cu1.4Ag0.6BiI5 NCs exhibit an extraordinary water resistance, due to the well-defined coverage of hydrophobic ligands on the surface of NCs with unique layered cation disordered structure. Together with their high structural stability, the Cu1.4Ag0.6BiI5 NCs-based photoanode displays a maximum photocurrent density of 4.62 mA cm−2 at 1.23 V vs. reversible hydrogen electrode, and an applied bias photo-to-current efficiency of 2.94% without any protective layer. Our study highlights the great potential of lead-free Cu1.4Ag0.6BiI5 NCs-based photoelectrodes for a wide range of low-cost, eco-friendly, and high-performance PEC applications.}},
  author       = {{Liu, Maning and Grandhi, G Krishnamurthy and Al-Anesi, Basheer and Ali-Löytty, Harri and Lahtonen, Kimmo and Grisorio, Roberto and Vivo, Paola}},
  issn         = {{0013-4686}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Electrochimica Acta}},
  title        = {{Water-Resistant Perovskite-Inspired Copper/Silver Pnictohalide Nanocrystals for Photoelectrochemical Water Splitting}},
  url          = {{http://dx.doi.org/10.1016/j.electacta.2023.142734}},
  doi          = {{10.1016/j.electacta.2023.142734}},
  volume       = {{462}},
  year         = {{2023}},
}