Topological Defect‐Rich Carbon as a Metal‐Free Cathode Catalyst for High‐Performance Li‐CO<sub>2</sub> Batteries (Adv. Energy Mater. 30/2021)

Ye, Fenghui; Gong, Lele; Long, Yongde; Talapaneni, Siddulu Naidu; Zhang, Lipeng; Xiao, Ying; Liu, Dong; Hu, Chuangang; Dai, Liming

doi:10.1002/aenm.202170120

Cited by 18 publications

(30 citation statements)

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“…[ 71 ] At the first discharged state, the peak attributed to Li 2 CO 3 at about 290.5 eV appeared. [ 12,71 ] After recharging, although the peak intensity of Li 2 CO 3 was decreased, there were still some Li 2 CO 3 existing on the CNT cathode. The XPS spectra of Li 1s also revealed that the Li 1s peak corresponding to Li 2 CO 3 was found at the discharged state, and then became weak after the recharge process (Figure S30d–f, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

“…Consequently, high charge voltages are usually required to completely decompose Li 2 CO 3 and carbon, leading to sluggish reaction kinetics, low energy efficiency, and poor cycling stability with the accumulation of undecomposed products. [ 11–13 ] Therefore, on the way to approaching high‐performance Li‐CO 2 batteries, it is critically essential to develop novel electrocatalysts, which can not only control the generation and distribution of discharge products but also decrease their decomposition energy barrier and boost the reaction kinetics efficiently, achieving rapid and highly reversible redox reactions at a relatively low overpotential.…”

Section: Introductionmentioning

confidence: 99%

“…To date, several kinds of electrocatalysts, such as noble metals, [ 14–25 ] transition metals and their oxides/sulfides/carbides/phosphides, [ 11,26–37 ] metal‐organic frameworks (MOFs), [ 38,39 ] covalent organic frameworks (COFs), [ 40,41 ] and carbon nanomaterials, [ 12,42–45 ] have been developed for Li‐CO 2 batteries. Among them, noble metals, especially ruthenium (Ru) nanomaterials, are one kind of the most promising electrocatalysts in promoting the reversible formation and decomposition of discharge products, especially in boosting the degradation of the generated Li 2 CO 3 and carbon.…”

Section: Introductionmentioning

confidence: 99%

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Decreasing the Overpotential of Aprotic Li‐CO₂ Batteries with the In‐Plane Alloy Structure in Ultrathin 2D Ru‐Based Nanosheets

Wang

Zhou

Lin

et al. 2022

Adv Funct Materials

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The aprotic Li-CO 2 battery is emerging as a promising energy storage technology with the capability of CO 2 fixation and conversion. However, its practical applications are still impeded by the large overpotential. Herein, the general synthesis of a series of ultrathin 2D Ru-M (M = Co, Ni, and Cu) nanosheets by a facile one-pot solvothermal method is reported. As a proofof-concept application, the representative RuCo nanosheets are used as the cathode catalysts for Li-CO 2 batteries, which demonstrate a low charge voltage of 3.74 V, a small overpotential of 0.94 V, and hence a high energy efficiency of 75%. Ex/in situ studies and density functional theory calculations reveal that the excellent catalytic performance of RuCo nanosheets originates from the enhanced adsorption toward Li and CO 2 during discharge as well as the elevated electron interaction with Li 2 CO 3 during charge by the in-plane RuCo alloy structure. This work indicates the feasibility of boosting the electrochemical performance of Li-CO 2 batteries by in-plane metal alloy sites of ultrathin 2D alloy nanomaterials.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Decreasing the Overpotential of Aprotic Li‐CO₂ Batteries with the In‐Plane Alloy Structure in Ultrathin 2D Ru‐Based Nanosheets

Wang

Zhou

Lin

et al. 2022

Adv Funct Materials

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“…Rational defect engineering and hetero‐atom doping of metal‐free carbon catalysts can realize the excellent catalytic performance with low cost [39–41] . Ye et al [42] . used topologically defection‐rich graphene (TDG) as cathode catalyst of LCB.…”

Section: Classification Of Catalystsmentioning

confidence: 99%

Aprotic Lithium‐Carbon Dioxide Batteries: Reaction Mechanism and Catalyst Design

Xia

Xue

et al. 2022

The Chemical Record

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In recent years, the combustion of fossil fuels leads to the release of a large amount of CO2 gas, which induces the greenhouse effect and the energy crisis. To solve these problems, researchers have turned their focus to a novel Li‐CO2 battery (LCB). LCB has received much attention because of its high theoretical energy density and reversible CO2 reduction/evolution process. So far, the emerging LCB still faces many challenges derived from the slow reaction kinetics of discharge products. In this review, the latest status and progress of LCB, especially the influence of the structure design of cathode catalysts on the battery performance, are systematically elaborated. This review summarizes in detail the existing issues and possible solutions of LCB, which is of high research value for further promoting the development of Li‐Air battery.

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“…Resulting from the intrinsically poor conductivity and loose macrostructure of most cathodes, [ 24,25 ] the developing of high‐efficiency electrocatalysts is inseparable from the design of reasonable conductive materials as well as the current collectors. Up to date, the general preparation procedure of the cathode for a Li–CO 2 battery is to mix the electrocatalyst, the conductive carbon material and the binder with a certain proportion.…”

Section: Introductionmentioning

confidence: 99%

Electronic State Modulation and Reaction Pathway Regulation on Necklace‐Like MnO_x‐CeO₂@Polypyrrole Hierarchical Cathode for Advanced and Flexible Li–CO₂ Batteries

Deng

Yang

Mao

et al. 2022

Advanced Energy Materials

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Li–CO2 batteries provide the possibility for synchronous implementation of carbon neutrality and development of advanced energy storage devices. Catalytic cathodes composed of well‐designed conductive substrates and active materials are critical to the improvement of Li–CO2 batteries. Herein, MnOx‐CeO2 hollow nanospheres are strung together by conductive polypyrrole (PPy) via post‐in‐situ polymerization, and a necklace‐like MnOx‐CeO2@PPy hierarchical cathode with excellent flexibility and self‐supporting feature is constructed. Benefitting from the excellent conductivity of PPy, the binder‐free structure, and the greatly exposed catalytic active sites, the MnOx‐CeO2@PPy based Li–CO2 batteries exhibit superior discharge capacity (13631 mA h g–1 at 100 mA g–1) and cycle performance (253 cycles) as well as a low overpotential of 1.49 V. Of particular note, the flexible freestanding film is confirmed as a potential catalytic cathode for flexible Li–CO2 batteries. The density functional theory calculations, combined with experimental tests, are performed to gain insights into the enhanced substrate adsorption capacity, the optimized electronic structure of the active surface MnOx‐CeO2 (111), the concentrated electrons on the reaction sites Ce, and the electrochemical mechanism. This work initiates the use of conductive polymers for catalytic cathodes in Li–CO2 batteries, which provide new opportunities for promoting the performance of various energy storage devices.

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Topological Defect‐Rich Carbon as a Metal‐Free Cathode Catalyst for High‐Performance Li‐CO₂ Batteries (Adv. Energy Mater. 30/2021)

Cited by 18 publications

References 0 publications

Decreasing the Overpotential of Aprotic Li‐CO₂ Batteries with the In‐Plane Alloy Structure in Ultrathin 2D Ru‐Based Nanosheets

Decreasing the Overpotential of Aprotic Li‐CO₂ Batteries with the In‐Plane Alloy Structure in Ultrathin 2D Ru‐Based Nanosheets

Aprotic Lithium‐Carbon Dioxide Batteries: Reaction Mechanism and Catalyst Design

Electronic State Modulation and Reaction Pathway Regulation on Necklace‐Like MnO_x‐CeO₂@Polypyrrole Hierarchical Cathode for Advanced and Flexible Li–CO₂ Batteries

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Topological Defect‐Rich Carbon as a Metal‐Free Cathode Catalyst for High‐Performance Li‐CO2 Batteries (Adv. Energy Mater. 30/2021)

Cited by 18 publications

References 0 publications

Decreasing the Overpotential of Aprotic Li‐CO2 Batteries with the In‐Plane Alloy Structure in Ultrathin 2D Ru‐Based Nanosheets

Decreasing the Overpotential of Aprotic Li‐CO2 Batteries with the In‐Plane Alloy Structure in Ultrathin 2D Ru‐Based Nanosheets

Aprotic Lithium‐Carbon Dioxide Batteries: Reaction Mechanism and Catalyst Design

Electronic State Modulation and Reaction Pathway Regulation on Necklace‐Like MnOx‐CeO2@Polypyrrole Hierarchical Cathode for Advanced and Flexible Li–CO2 Batteries

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Topological Defect‐Rich Carbon as a Metal‐Free Cathode Catalyst for High‐Performance Li‐CO₂ Batteries (Adv. Energy Mater. 30/2021)

Decreasing the Overpotential of Aprotic Li‐CO₂ Batteries with the In‐Plane Alloy Structure in Ultrathin 2D Ru‐Based Nanosheets

Decreasing the Overpotential of Aprotic Li‐CO₂ Batteries with the In‐Plane Alloy Structure in Ultrathin 2D Ru‐Based Nanosheets

Electronic State Modulation and Reaction Pathway Regulation on Necklace‐Like MnO_x‐CeO₂@Polypyrrole Hierarchical Cathode for Advanced and Flexible Li–CO₂ Batteries