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Title: High throughput discovery of enhanced visible photoactivity in Fe–Cr vanadate solar fuels photoanodes

Journal Article · · JPhys Energy

Metal oxide solar absorbers are well suited for photoelectrochemical applications where requisite properties include stability in highly oxidizing environments, in addition to solar energy conversion. Metal vanadates are of particular interest due to their relatively low band gap energies compared to traditional, wide-gap photocatalysts. Concerted efforts on BiVO4-based photoanodes have revealed multiple avenues for improving the solar conversion efficiencies for photon energies above 2.5 eV but have not addressed the ultimate performance limitations from the undesirably high band gap energy. Fe and Cr vanadates have a lower band gap and thus a higher potential solar conversion efficiency, although to-date the absorbed 2–2.5 eV photons are not effectively converted to the desired anodic photocurrent. By using combinatorial synthesis and high throughput screening, we demonstrate that cation substitutions with the monoclinic MVO4 phase (M = Cr, Fe) improves the utilization of photons in this energy range. Given the portfolio of photoanode improvement techniques available, we suggest optimization of (Cr0.5Fe0.5)VO4-based photoanodes as a promising path for enable solar fuel technologies.

Research Organization:
California Institute of Technology (CalTech), Pasadena, CA (United States); Stanford Univ., CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-76SF00515; SC0021266
OSTI ID:
2421866
Journal Information:
JPhys Energy, Journal Name: JPhys Energy Journal Issue: 4 Vol. 4; ISSN 2515-7655
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

References (48)

FeVO4 Nanopolyhedron Photoelectrodes for Stable and Efficient Water Splitting journal June 2021
High Throughput Discovery of Effective Metal Doping in FeVO4 for Photoelectrochemical Water Splitting journal October 2020
Reactivity of CrVO4 with FeVO4 journal September 1990
Nanoporous FeVO4 Photoanodes Modified with Ultrathin C3N4 for High Photoelectrochemical Water Splitting Performance journal October 2018
The IR spectra of the (CrxFe1−x)VO4 phases journal February 1989
Bamboo shoots shaped FeVO4 passivated ZnO nanorods photoanode for improved charge separation/transfer process towards efficient solar water splitting journal November 2019
Enhanced photoactivity of visible light responsive W incorporated FeVO4 photoanode for solar water splitting journal November 2013
Synthesis and characterisation of Fe–V–O thin film photoanodes journal December 2010
Elucidating the role of surface states of BiVO4 with Mo doping and a CoOOH co-catalyst for photoelectrochemical water splitting journal January 2021
Quaternary Oxide Photoanode Discovery Improves the Spectral Response and Photovoltage of Copper Vanadates journal November 2020
State-of-the-art progress in the use of ternary metal oxides as photoelectrode materials for water splitting and organic synthesis journal October 2019
Recent progress on the characterization of the high-pressure behaviour of A VO 4 orthovanadates journal August 2018
Vibrational spectra and optical properties ofFe1−xCrxVO4solid solutions: With a group theory analysis journal February 2020
Probing the Performance Limitations in Thin-Film FeVO4 Photoanodes for Solar Water Splitting journal April 2018
Combinatorial Synthesis and High-Throughput Characterization of Fe–V–O Thin-Film Materials Libraries for Solar Water Splitting journal August 2018
Bismuth Vanadate as a Platform for Accelerating Discovery and Development of Complex Transition-Metal Oxide Photoanodes journal December 2016
Fe–Cr–Al Containing Oxide Semiconductors as Potential Solar Water-Splitting Materials journal February 2015
High-Throughput Screening Using Porous Photoelectrode for the Development of Visible-Light-Responsive Semiconductors journal July 2007
Combinatorial Approach to Improve Photoelectrodes Based on BiVO 4 journal November 2013
Solar Water Splitting Cells journal November 2010
Mechanistic insights into chemical and photochemical transformations of bismuth vanadate photoanodes journal July 2016
Efficiency limits for photoelectrochemical water-splitting journal December 2016
Automating crystal-structure phase mapping by combining deep learning with constraint reasoning journal September 2021
Progress in bismuth vanadate photoanodes for use in solar water oxidation journal January 2013
pH-controlled growth of ultrathin iron vanadium oxide (FeV 3 O 8 ) nanoplatelets with high visible-light photo-catalytic activity journal January 2014
Development of ternary iron vanadium oxide semiconductors for applications in photoelectrochemical water oxidation journal January 2016
Facile growth of porous Fe 2 V 4 O 13 films for photoelectrochemical water oxidation journal January 2016
Facile synthesis of Fe 3+ /Fe 2+ self-doped nanoporous FeVO 4 photoanodes for efficient solar water splitting journal January 2017
Alternative strategies in improving the photocatalytic and photoelectrochemical activities of visible light-driven BiVO 4 : a review journal January 2017
Elucidation of the opto-electronic and photoelectrochemical properties of FeVO 4 photoanodes for solar water oxidation journal January 2018
Progress on ternary oxide-based photoanodes for use in photoelectrochemical cells for solar water splitting journal January 2019
Combinatorial alloying improves bismuth vanadate photoanodes via reduced monoclinic distortion journal January 2018
The synergistic effect of cation mixing in mesoporous Bi x Fe 1−x VO 4 heterojunction photoanodes for solar water splitting journal January 2019
The role of oxygen vacancies in water splitting photoanodes journal January 2020
An ultrathin TiO2 interfacial layer enhancing the performance of an FeVO4 photoanode for water splitting journal January 2021
Magnetic frustration, spirals and short-range order in CrxFe1 –xVO4–I solid solutions journal January 1991
An analysis of the optimal band gaps of light absorbers in integrated tandem photoelectrochemical water-splitting systems journal January 2013
Scanning droplet cell for high throughput electrochemical and photoelectrochemical measurements journal February 2013
High-throughput on-the-fly scanning ultraviolet-visible dual-sphere spectrometer journal January 2015
Combinatorial thin film composition mapping using three dimensional deposition profiles journal March 2015
BiVO4 photoanodes for water splitting with high injection efficiency, deposited by reactive magnetron co-sputtering journal April 2016
Triclinic–monoclinic–orthorhombic (T–M–O) structural transitions in phase diagram of FeVO4-CrVO4 solid solutions journal September 2017
Structural and photoelectrochemical properties in the thin film system Cu–Fe–V–O and its ternary subsystems Fe–V–O and Cu–V–O journal July 2020
Solar fuels photoanode materials discovery by integrating high-throughput theory and experiment journal March 2017
Recent developments in complex metal oxide photoelectrodes journal April 2017
Magnetolattice coupling, magnetic frustration, and magnetoelectric effect in the Cr-doped FeVO 4 multiferroic material and their correlation with structural phase transitions journal July 2019
High-throughput synchrotron X-ray diffraction for combinatorial phase mapping journal October 2014
High throughput discovery of enhanced visible photoactivity in Fe-Cr vanadate solar fuels photoanodes dataset January 2022