Nature inspired cathodes using high-density carbon papers with an eddy current effect for high-rate performance lithium–air batteries

Kim, Min‐Cheol; So, Jin-Young; Moon, Sangook; Han, Sang-Beom; Choi, Sojeong; Kim, Eun-Soo; Shin, Yeon-Kyung; Lee, Jieun; Kwak, Da-Hee; Lee, Chanho; Bae, Won‐Gyu; Park, Kyung-Won

doi:10.1039/c8ta00281a

Cited by 16 publications

(11 citation statements)

References 45 publications

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“…It was also found that the Pt/RuO 2 @ACT O 2 -electrode achieved at least 40 cycles in the Li-O 2 batteries without unwanted irreversible reactions. 59…”

Section: Resultsmentioning

confidence: 99%

Well-dispersed Pt/RuO₂-decorated mesoporous N-doped carbon as a hybrid electrocatalyst for Li–O₂ batteries

Kim

Ahn

2021

RSC Adv.

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“…It was also found that the Pt/RuO 2 @ACT O 2 -electrode achieved at least 40 cycles in the Li-O 2 batteries without unwanted irreversible reactions. 59…”

Section: Resultsmentioning

confidence: 99%

Well-dispersed Pt/RuO₂-decorated mesoporous N-doped carbon as a hybrid electrocatalyst for Li–O₂ batteries

Kim

Ahn

2021

RSC Adv.

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“…As illustrated in Figure 2 d, the decomposition of Li 2 O 2 occurs via the OER in another two-step process [ 40 ]: (1) Li 2 O 2 releases one electron and decomposes to LiO 2 and (2) LiO 2 interacts with oxygen vacancies to release the second electron and lithium ions. As a result, LOB operation completely relies on the OER and ORR during the electrochemical charge–discharge process [ 41 , 42 , 43 ].…”

Section: Basic Principles Of Li–o 2 Batteriesmentioning

confidence: 99%

Recent Advances in Nanostructured Transition Metal Carbide- and Nitride-Based Cathode Electrocatalysts for Li–O2 Batteries (LOBs): A Brief Review

Karuppasamy

Prasanna²,

Jothi

et al. 2020

Nanomaterials

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A large volume of research on lithium–oxygen (Li–O2) batteries (LOBs) has been conducted in the recent decades, inspired by their high energy density and power density. However, these future generation energy-storage devices are still subject to technical limitations, including a squat round-trip efficiency and a deprived rate-capability, due to the slow-moving electrochemical kinetics of both the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) over the surface of the cathode catalyst. Because the electrochemistry of LOBs is rather complex, only a limited range of cathode catalysts has been employed in the past. To understand the catalytic mechanisms involved and improve overall cell performance, the development of new cathode electrocatalysts with enhanced round-trip efficiency is extremely important. In this context, transition metal carbides and nitrides (TMCs and TMNs, respectively) have been explored as potential catalysts to overcome the slow kinetics of electrochemical reactions. To provide an accessible and up-to-date summary for the research community, the present paper reviews the recent advancements of TMCs and TMNs and its applications as active electrocatalysts for LOBs. In particular, significant studies on the rational design of catalysts and the properties of TMC/TMN in LOBs are discussed, and the prospects and challenges facing the continued development of TMC/TMN electrocatalysts and strategies for attaining higher OER/ORR activity in LOBs are presented.

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“…Carbon materials generally possess many merits such as excellent electrical conductivity, good chemical and thermal stability, light weight, high surface area, sufficient resources, and low cost [41,42]. As a result, various carbon materials, including activated carbon [43], carbon paper [44,45], carbon nanotubes (CNT) [46][47][48][49], graphene [42,[50][51][52][53][54], and mesoporous carbon [55][56][57][58], have been used as the positive electrode for Li-O 2 batteries. In this section, various strategies to design high-performance carbon positive-electrode catalysts are discussed, including structural design, heteroatom doping, defect modification, and synergy of the above three strategies.…”

Section: Carbonmentioning

confidence: 99%

“…Inspired by eddy current effects in nature, Bae and co-workers [44] used an imprinting process with a micro-scale metal mold to prepare patterned carbon papers as air electrodes of Li-O 2 batteries. The patterned positive electrode not only enhanced the transport velocity of oxygen due to the intensified eddy current effect, but also increased reaction active sites due to a larger roughness factor (Figure 2a).…”

Section: Structural Designmentioning

confidence: 99%

Recent Progress on Catalysts for the Positive Electrode of Aprotic Lithium-Oxygen Batteries †

2019

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Rechargeable aprotic lithium-oxygen (Li-O2) batteries have attracted significant interest in recent years owing to their ultrahigh theoretical capacity, low cost, and environmental friendliness. However, the further development of Li-O2 batteries is hindered by some ineluctable issues, such as severe parasitic reactions, low energy efficiency, poor rate capability, short cycling life and potential safety hazards, which mainly stem from the high charging overpotential in the positive electrode side. Thus, it is of great significance to develop high-performance catalysts for the positive electrode in order to address these issues and to boost the commercialization of Li-O2 batteries. In this review, three main categories of catalyst for the positive electrode of Li-O2 batteries, including carbon materials, noble metals and their oxides, and transition metals and their oxides, are systematically summarized and discussed. We not only focus on the electrochemical performance of batteries, but also pay more attention to understanding the catalytic mechanism of these catalysts for the positive electrode. In closing, opportunities for the design of better catalysts for the positive electrode of high-performance Li-O2 batteries are discussed.

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Nature inspired cathodes using high-density carbon papers with an eddy current effect for high-rate performance lithium–air batteries

Abstract: The patterned cathode exhibits improved high-rate performance.

Cited by 16 publications

References 45 publications

Well-dispersed Pt/RuO₂-decorated mesoporous N-doped carbon as a hybrid electrocatalyst for Li–O₂ batteries

Well-dispersed Pt/RuO₂-decorated mesoporous N-doped carbon as a hybrid electrocatalyst for Li–O₂ batteries

Recent Advances in Nanostructured Transition Metal Carbide- and Nitride-Based Cathode Electrocatalysts for Li–O2 Batteries (LOBs): A Brief Review

Recent Progress on Catalysts for the Positive Electrode of Aprotic Lithium-Oxygen Batteries †

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Nature inspired cathodes using high-density carbon papers with an eddy current effect for high-rate performance lithium–air batteries

Abstract: The patterned cathode exhibits improved high-rate performance.

Cited by 16 publications

References 45 publications

Well-dispersed Pt/RuO2-decorated mesoporous N-doped carbon as a hybrid electrocatalyst for Li–O2 batteries

Well-dispersed Pt/RuO2-decorated mesoporous N-doped carbon as a hybrid electrocatalyst for Li–O2 batteries

Recent Advances in Nanostructured Transition Metal Carbide- and Nitride-Based Cathode Electrocatalysts for Li–O2 Batteries (LOBs): A Brief Review

Recent Progress on Catalysts for the Positive Electrode of Aprotic Lithium-Oxygen Batteries †

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Product

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Well-dispersed Pt/RuO₂-decorated mesoporous N-doped carbon as a hybrid electrocatalyst for Li–O₂ batteries

Well-dispersed Pt/RuO₂-decorated mesoporous N-doped carbon as a hybrid electrocatalyst for Li–O₂ batteries