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Modeling diurnal and annual ethylene generation from solar-driven electrochemical CO2 reduction devices

Journal Article · · Energy & Environmental Science
DOI:https://doi.org/10.1039/d4ee00545g· OSTI ID:2500820
 [1];  [2];  [1];  [2];  [2];  [1];  [1];  [3];  [2];  [4];  [1]
  1. Stanford Univ., CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). SUNCAT Center for Interface Science and Catalysis
  2. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  3. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  4. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). SUNCAT Center for Interface Science and Catalysis
Integrated solar fuels devices for CO2 reduction (CO2R) are a promising technology class towards reducing carbon emissions. Designing integrated CO2R solar fuels devices requires careful co-design of electrochemical and photovoltaic components as well as consideration of the diurnal and seasonal effects of solar irradiance, temperature, and other meteorological factors expected for ‘on-sun’ deployment. Using a photovoltaic-electrochemical (PV-EC) platform, we developed a temperature and potential-dependent diurnal and annual model using experimentally-determined CO2R performance of Cu-based electrocatalysts, local meteorological data from the National Solar Radiation Database (NSRD), and modeled performance of commercial c-Si PVs. Here we simulated gaseous diurnal product outputs with and without the effects of ambient temperature. From these outputs, we observed seasonal variation in gaseous product generation, with up to two-fold increases in ethylene productivity between the Winter and Summer, analyzed the consequences of dynamic cloud coverage, and identified periods where device cooling/heating mechanisms could be implemented to maximize ethylene generation. Finally, we modeled the annual ethylene generation for a scaled 1 MW solar farm at three different locations (Beijing, CN; Sydney, AUS; Barstow, CA) to determine the consequences of local meteorological climates on PV-EC CO2R product output, recording a maximum ethylene output of 18.5 tonne per year at Barstow. Overall, this model presents a critical tool for streamlining the translation of experimental solar-driven electrochemical research to real-world implementation.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
National Science Foundation (NSF); US Army Research Office (ARO); USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Hydrogen Fuel Cell Technologies Office (HFTO); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231; SC0021266
OSTI ID:
2500820
Alternate ID(s):
OSTI ID: 2316097
Journal Information:
Energy & Environmental Science, Journal Name: Energy & Environmental Science Journal Issue: 7 Vol. 17; ISSN 1754-5692
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

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