An industrial perspective on catalysts for low-temperature CO2 electrolysis

Nature Nanotechnology, Journal Year: 2021, Volume and Issue: 16(2), P. 118 - 128

Published: Jan. 11, 2021

Language: Английский

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Gas diffusion electrodes (GDEs) for electrochemical reduction of carbon dioxide, carbon monoxide, and dinitrogen to value-added products: a review

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(4), P. 1959 - 2008

Published: Jan. 1, 2021

Opportunities, challenges and design criteria associated with Gas diffusion electrodes (GDEs) for various electrochemical applications.

Language: Английский

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Steering the structure and selectivity of CO2 electroreduction catalysts by potential pulses

Nature Catalysis, Journal Year: 2022, Volume and Issue: 5(4), P. 259 - 267

Published: April 21, 2022

Abstract Convoluted selectivity trends and a missing link between reaction product distribution catalyst properties hinder practical applications of the electrochemical CO 2 reduction (CO RR) for multicarbon generation. Here we employ operando X-ray absorption diffraction methods with subsecond time resolution to unveil surprising complexity catalysts exposed dynamic conditions. We show that by using pulsed protocol consisting alternating working oxidizing potential periods dynamically perturb derived from Cu O nanocubes, one can decouple effect ensemble coexisting copper species on distribution. In particular, an optimized balance oxidized reduced surface achieved within narrow range cathodic anodic pulse durations resulted in twofold increase ethanol production compared static RR This work thus prepares ground steering through controlled structural chemical transformations.

Language: Английский

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Recent advances in innovative strategies for the CO₂ electroreduction reaction

Energy & Environmental Science, Journal Year: 2020, Volume and Issue: 14(2), P. 765 - 780

Published: Dec. 15, 2020

This review underlines innovative design strategies for CO₂RR system, also distinctively presents the current status and new trend.

Language: Английский

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Double sulfur vacancies by lithium tuning enhance CO2 electroreduction to n-propanol

Nature Communications, Journal Year: 2021, Volume and Issue: 12(1)

Published: March 11, 2021

Abstract Electrochemical CO 2 reduction can produce valuable products with high energy densities but the process is plagued by poor selectivities and low yields. Propanol represents a challenging product to obtain due complicated C 3 forming mechanism that requires both stabilization of *C intermediates subsequent 1 –C coupling. Herein, density function theory calculations revealed double sulfur vacancies formed on hexagonal copper sulfide feature as efficient electrocatalytic centers for stabilizing CO* OCCO* dimer, further CO–OCCO coupling form species, which cannot be realized CuS single or no vacancies. The were then experimentally synthesized an electrochemical lithium tuning strategy, during was well-tuned charge/discharge cycle number. vacancy-rich catalyst exhibited Faradaic efficiency toward n-propanol 15.4 ± 1% at −1.05 V versus reversible hydrogen electrode in H-cells, partial current 9.9 mA cm −2 −0.85 flow-cells, comparable best reported n-propanol. Our work suggests attractive approach create anion vacancy pairs catalytic multi-carbon-products.

Language: Английский

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Architectural Design for Enhanced C₂ Product Selectivity in Electrochemical CO₂ Reduction Using Cu-Based Catalysts: A Review

ACS Nano, Journal Year: 2021, Volume and Issue: 15(5), P. 7975 - 8000

Published: May 6, 2021

Electrochemical CO2 reduction to value-added chemicals and fuels is a promising approach mitigate the greenhouse effect arising from anthropogenic emission energy shortage caused by depletion of nonrenewable fossil fuels. The generation multicarbon (C2+) products, especially hydrocarbons oxygenates, great interest for industrial applications. To date, Cu only metal known catalyze C–C coupling in electrochemical reaction (eCO2RR) with appreciable efficiency kinetic viability produce wide range C2 products aqueous solutions. Nonetheless, poor product selectivity associated main technical problem application eCO2RR technology on global scale. Based extensive research efforts, delicate rational design electrocatalyst architecture using principles nanotechnology likely significantly affect adsorption energetics some key intermediates hence inherent pathways. In this review, we summarize recent progress that has been achieved tailoring efficient conversion target products. By considering experimental computational results, further analyze underlying correlations between catalyst its toward Finally, major challenges are outlined, directions future development suggested.

Language: Английский

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The Controllable Reconstruction of Bi‐MOFs for Electrochemical CO₂ Reduction through Electrolyte and Potential Mediation

Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 60(33), P. 18178 - 18184

Published: July 9, 2021

Abstract Monitoring and controlling the reconstruction of materials under working conditions is crucial for precise identification active sites, elucidation reaction mechanisms, rational design advanced catalysts. Herein, a Bi‐based metal–organic framework (Bi‐MOF) electrochemical CO 2 reduction selected as case study. In situ Raman spectra combined with ex electron microscopy reveal that intricate Bi‐MOF can be controlled using two steps: 1) electrolyte‐mediated dissociation conversion to Bi O 3 , 2) potential‐mediated Bi. The intentionally reconstructed catalyst exhibits excellent activity, selectivity, durability formate production, unsaturated surface atoms formed during become sites. This work emphasizes significant impact pre‐catalyst provides insight into highly stable electrocatalysts through regulation these processes.

Language: Английский

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High-purity and high-concentration liquid fuels through CO2 electroreduction

Nature Catalysis, Journal Year: 2021, Volume and Issue: 4(11), P. 943 - 951

Published: Nov. 18, 2021

Language: Английский

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Simultaneous Manipulation of Bulk Excitons and Surface Defects for Ultrastable and Highly Selective CO₂ Photoreduction

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(38)

Published: July 31, 2021

Abstract The objective of photocatalytic CO 2 reduction (PCR) is to achieve high selectivity for a single energy‐bearing product with efficiency and stability. bulk configuration usually determines charge carrier kinetics, whereas surface atomic arrangement defines the PCR thermodynamic pathway. Concurrent engineering structures therefore crucial achieving goal PCR. Herein, an ultrastable highly selective using homogeneously doped BiOCl nanosheets synthesized via inventive molten strategy presented. With B O 3 as both salt doping precursor, this new approach ensures boron (B) from into dual functionalities. Bulk mitigates strong excitonic effects confined in 2D by significantly reducing exciton binding energies, surface‐doped atoms reconstruct extracting lattice hydroxyl groups, resulting intimate B‐oxygen vacancy (B‐OV) associates. These exclusive B‐OV associates enable spontaneous activation, suppress competitive hydrogen evolution promote proton‐coupled electron transfer step stabilizing *COOH generation. As result, homogeneous B‐doped exhibit 98% ‐to‐CO under visible light, impressive rate 83.64 µmol g −1 h ultrastability long‐term testing 120 h.

Language: Английский

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Nitrogen dopants in nickel nanoparticles embedded carbon nanotubes promote overall urea oxidation

Applied Catalysis B Environment and Energy, Journal Year: 2020, Volume and Issue: 280, P. 119436 - 119436

Published: Aug. 14, 2020

Language: Английский

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