Gas diffusion electrode design for electrochemical carbon dioxide reduction

Nguyen, Tu N.; Dinh, Cao-Thang

doi:10.1039/d0cs00230e

Cited by 261 publications

(261 citation statements)

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“…The self‐supporting and hierarchical structure of Ni@NCNT/CFM integrates gas‐diffusion and catalyst layers into one architecture, which can be directly used as a GDE for CO 2 RR tests in a flow cell (Figure S30, Supporting Information). [ 34–38 ] As shown in Figure 5g, Ni@NCNT/CFM (1000) showed much higher current densities both in 1 m KHCO 3 or KOH solution than those collected in a H‐type cell. Specially, Ni@NCNT/CFM (1000) showed a high current density of 240 mA cm −2 in 1 m KHCO 3 and 361 mA cm −2 in KOH, while maintain a high FE CO > 92% (Figure 5h).…”

Section: Resultsmentioning

confidence: 95%

Self‐Supported Nickel Single Atoms Overwhelming the Concomitant Nickel Nanoparticles Enable Efficient and Selective CO₂ Electroreduction

Shen

Han

Wang

et al. 2021

Adv Materials Inter

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Self‐supported metal/nitrogen‐doped carbon (M‐N‐C) catalysts with unitary single‐atom (SA) sites are highly desired to facilitate the electrocatalysis industrialization. Nevertheless, the concomitance of metal nanoparticles (NPs) enclosed by graphene layers is commonly inevitable and results in structure heterogeneity. Herein, an electronic structure modulation strategy of inactivating nickel (Ni) NPs to maximize Ni SAs for highly efficient and selective carbon dioxide reduction reaction (CO2RR) within a facilely prepared self‐supported Ni NPs/SAs‐containing catalyst is reported. The side effect of Ni NPs is effectively inhibited by finely tuning the encapsulating graphene layers thickness to block electrons penetration. The optimized catalyst exhibits a nearly 100% selectivity of CO production under moderate working potentials of −0.6– −0.8 V (vs reversible hydrogen electrode) and produces a partial current density of 341 mA cm−2 when directly used as a gas diffusion electrode for CO2RR. The authors’ discoveries provide fresh insights into the design and scalable preparation of self‐supported M‐N‐C catalysts with unitary single‐atom active sites for CO2RR aiming at industrialization.

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Section: Resultsmentioning

confidence: 95%

Self‐Supported Nickel Single Atoms Overwhelming the Concomitant Nickel Nanoparticles Enable Efficient and Selective CO₂ Electroreduction

Shen

Han

Wang

et al. 2021

Adv Materials Inter

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“…The configuration of the electrolytic cell plays a critical role in CO 2 electroreduction since the arrangement of the electrodes, [90] types of membrane [91] and types of electrolyte [92] affect the performance of electroreduction and the desired product yield. The most common reactors types are: (i) H‐type cell, (ii) solid‐oxide electrolysis cell (SOEC), (iii) differential electrochemical mass spectrometry cell (DEMS), (iv) Microfluidic flow cell (MFC), (v) polymer electrolyte membrane (PEM) and (vi) GDE [93] .…”

Section: Types Of Electrolytic Cell Reactor For Formate Productionmentioning

confidence: 99%

Electroreduction of Carbon Dioxide into Formate: A Comprehensive Review

et al. 2021

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Carbon dioxide conversion into useful products has been gaining considerable attention as a global‐warming‐mitigation technique. The electrochemical conversion of CO2 into high‐value chemicals involves the utilization of electrical energy in the presence of an effective catalyst. The process products depend on the number of transferred electrons during the reaction and the characteristics of the electrode. Recently, electrodes coupled with active catalysts have been used to convert CO2 into valuable products including formic acid, hydrocarbons, and syngas. This review offers an overview of the recent literature on the electrochemical conversion of CO2 to valuable products, with an emphasis on the production of formate/formic acid. In addition, it compares the main features of electrochemical conversion to other techniques and summarizes their key advantages. It also provides future perspective for research and development, such as the need for novel and selective catalysts to obtain high conversion and product yield with low energy consumption.

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“…The excessive use of fossil resources makes the earth's carbon dioxide (CO 2 ) flux unable to reach an effective balance, which has a huge impact on global warming, human health (Chu and Majumdar, 2012;Sanz-Perez et al, 2016). In recent years, continuous studies have been devoted to develop advanced CO 2 capture and storage technologies for the reduction of CO 2 emissions (Nguyen and Dinh, 2020). Among them, direct electrochemical reduction of CO 2 with electron transfer is an effective solution for the capture and conversion of CO 2 into sustainable energy (Khurram et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Promoting the Performance of Li–CO2 Batteries via Constructing Three-Dimensional Interconnected K+ Doped MnO2 Nanowires Networks

et al. 2021

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Nowadays, Li–CO2 batteries have attracted enormous interests due to their high energy density for integrated energy storage and conversion devices, superiorities of capturing and converting CO2. Nevertheless, the actual application of Li–CO2 batteries is hindered attributed to excessive overpotential and poor lifespan. In the past decades, catalysts have been employed in the Li–CO2 batteries and been demonstrated to reduce the decomposition potential of the as-formed Li2CO3 during charge process with high efficiency. However, as a representative of promising catalysts, the high costs of noble metals limit the further development, which gives rise to the exploration of catalysts with high efficiency and low cost. In this work, we prepared a K+ doped MnO2 nanowires networks with three-dimensional interconnections (3D KMO NWs) catalyst through a simple hydrothermal method. The interconnected 3D nanowires network catalysts could accelerate the Li ions diffusion, CO2 transfer and the decomposition of discharge products Li2CO3. It is found that high content of K+ doping can promote the diffusion of ions, electrons and CO2 in the MnO2 air cathode, and promote the octahedral effect of MnO6, stabilize the structure of MnO2 hosts, and improve the catalytic activity of CO2. Therefore, it shows a high total discharge capacity of 9,043 mAh g−1, a low overpotential of 1.25 V, and a longer cycle performance.

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Gas diffusion electrode design for electrochemical carbon dioxide reduction

Abstract: Insightful guide to developing efficient gas diffusion electrodes for electrochemical CO2 conversion to fuels and chemicals.

Cited by 261 publications

References 50 publications

Self‐Supported Nickel Single Atoms Overwhelming the Concomitant Nickel Nanoparticles Enable Efficient and Selective CO₂ Electroreduction

Self‐Supported Nickel Single Atoms Overwhelming the Concomitant Nickel Nanoparticles Enable Efficient and Selective CO₂ Electroreduction

Electroreduction of Carbon Dioxide into Formate: A Comprehensive Review

Promoting the Performance of Li–CO2 Batteries via Constructing Three-Dimensional Interconnected K+ Doped MnO2 Nanowires Networks

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Gas diffusion electrode design for electrochemical carbon dioxide reduction

Abstract: Insightful guide to developing efficient gas diffusion electrodes for electrochemical CO2 conversion to fuels and chemicals.

Cited by 261 publications

References 50 publications

Self‐Supported Nickel Single Atoms Overwhelming the Concomitant Nickel Nanoparticles Enable Efficient and Selective CO2 Electroreduction

Self‐Supported Nickel Single Atoms Overwhelming the Concomitant Nickel Nanoparticles Enable Efficient and Selective CO2 Electroreduction

Electroreduction of Carbon Dioxide into Formate: A Comprehensive Review

Promoting the Performance of Li–CO2 Batteries via Constructing Three-Dimensional Interconnected K+ Doped MnO2 Nanowires Networks

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Self‐Supported Nickel Single Atoms Overwhelming the Concomitant Nickel Nanoparticles Enable Efficient and Selective CO₂ Electroreduction

Self‐Supported Nickel Single Atoms Overwhelming the Concomitant Nickel Nanoparticles Enable Efficient and Selective CO₂ Electroreduction