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- W4385766556 abstract "Abstract Electrocatalysts are crucial to drive the electrochemical carbon dioxide reduction reaction (CO 2 RR) which lower the energy barrier, tune the intricate reaction pathways and suppress competitive side‐reaction. Beyond the efficient active sites and advantageous local environment, a rapid mass transfer ability is also crucial for the catalyst design. However, it is rare that research has been done to investigate in detail the mass transfer process in CO 2 RR, and expose the underlying relationship between mass transfer and final performance. Here, a single‐atom Fe‐N‐C catalyst is shown with a highly ordered porous substrate containing hierarchical micropores, mesopores, and macropores. Such a delicate porous structure significantly facilitates the mass transfer process toward the isolated Fe sites, achieving excellent CO 2 RR performance, especially in the limited mass transfer region in a H‐cell with a maximum CO partial current density of ‐19 mA cm −2 . Operando electrochemical impedance spectroscopy and relevant distributed relaxation times analysis reveal the rapidly decreased mass transfer resistance with the increase of reduction potential. The Lattice Boltzmann method with Discrete Element method (LBM‐DEM) simulations are further performed to exhibit the origin of enhanced CO 2 RR performance from the facilitated gas diffusion process." @default.
- W4385766556 created "2023-08-12" @default.
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- W4385766556 date "2023-08-10" @default.
- W4385766556 modified "2023-10-14" @default.
- W4385766556 title "Highly Ordered Hierarchical Porous Single‐Atom Fe Catalyst with Promoted Mass Transfer for Efficient Electroreduction of CO<sub>2</sub>" @default.
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- W4385766556 doi "https://doi.org/10.1002/aenm.202302007" @default.
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