Ultra-low overpotential and high rate capability in Li–O2 batteries through surface atom arrangement of PdCu nanocatalysts

Choi, Ran; Jung, Jaepyeong; Kim, Gyubong; Song, Kyeongse; Kim, Yong‐Il; Jung, Sung Chul; Han, Young‐Kyu; Song, Hyunjoon; Kang, Yong‐Mook

doi:10.1039/c3ee43437k

Cited by 200 publications

(147 citation statements)

References 41 publications

Supporting

Mentioning

137

Contrasting

Order By: Relevance

“…Because of this, the overpotentials for both the pristine silicene and graphene cannot be directly comparable unless further information about the ORR/OER mechanisms can be obtained. It is well-known that the discharge and charge potentials strongly correlate with the adsorption behavior of the ORR intermediates [54,55]. In this study, LiO 2 exhibited strong adsorption behavior on silicene (E ads ¼ 6.17 eV), which led to a large U C value according to the determining step.…”

Section: Free Energy Diagram For the Orr/oermentioning

confidence: 94%

“…It has been reported that the ORR mechanism at Pt, Pd, PtCo, and PdCu, which has been known for the best catalysts and readily dissociates the O 2 molecules at the surfaces, occurs through a four-electron pathway (Eq. (4)) [54,55]. € Ozçelik and Ciraci suggested that silicene promotes the dissociation of the O 2 molecules at the surface as metal or metal alloy catalysts as mentioned above [56].…”

Section: Free Energy Diagram For the Orr/oermentioning

confidence: 98%

See 1 more Smart Citation

Carbon-free and two-dimensional cathode structure based on silicene for lithium–oxygen batteries: A first-principles calculation

Hwang

Yun

Chung

2015

Journal of Power Sources

View full text Add to dashboard Cite

Section: Free Energy Diagram For the Orr/oermentioning

confidence: 94%

Section: Free Energy Diagram For the Orr/oermentioning

confidence: 98%

Carbon-free and two-dimensional cathode structure based on silicene for lithium–oxygen batteries: A first-principles calculation

Hwang

Yun

Chung

2015

Journal of Power Sources

View full text Add to dashboard Cite

“…The observed trend was consistent with the ORR polarization curves obtained with a rotating disc electrode and with the discharge overpotential observed in lithium/air cells. Due to their excellent ORR catalytic effects, palladium and platinum have been the preferred choice for catalysts, [176][177][178] either in pure form or combined with other catalysts (metals [ 179,180 ] or metal oxides [181][182][183] . Recently, in an attempt to prevent electrolyte decomposition on the carbon surface, Lu et al used a catalyst consisting of palladium nanoparticles on a carbon surface partially coated with alumina to passivate the carbon defect sites.…”

Section: Metalsmentioning

confidence: 99%

The Lithium/Air Battery: Still an Emerging System or a Practical Reality?

et al. 2014

View full text Add to dashboard Cite

gas. At the same time, the penetration of renewable energy sources has opened up the possibility of creating a CO 2 -neutral mobility system, where electric vehicles are powered by wind, hydro, and solar energy.Broad fi nancial efforts are being made at a governmental and industrial level to fund research into new areas of energy storage. The U.S. Department of Energy has allocated $20 million to energy storage research in 2012 and $15 million the following year, while the German government has committed itself to ¤200 million between 2011 and 2018; [ 1 ] similar schemes are also being promoted in Japan by the New Energy and Industrial Technology Development Organization (NEDO). The EU-backed "Horizon 2020" program aims at funding research into energy storage technologies, a fi eld where the European Union lags behind the U.S. and East Asia. [ 2 ] Lithium-ion technology has established itself as a type of reliable energy-storage chemistry over the past 20 years, fi rst being used in camcorders, then mobile phones, laptops, and more recently electric cars. However, as the size of the battery pack increases, so does the belief that the cost per kW h and its energy density are not suitable for practical vehicle applications. The Tesla Model S, which sports a 400 km driving range, does so with a whopping 85 kW h battery pack that alone has up to twice the price of a standard economy car. With a current cost higher than 400 $ kW h −1 , electric cars have so far only entered a niche, high-end market where users are willing to pay a premium. Resizing the battery pack, and so the total cost of an electric car, results in a limited driving range (typically 100-150 km) that automatically restricts the use for long-haul journeys and triggers the so-called "range anxiety" feeling. For these reasons, the need to develop energy-storage technologies that enable at least a 500 km driving range, while retaining the same battery pack volume at an affordable price, is of primary interest for governments and car manufacturers. A Brief History of Lithium/Air BatteriesOver the years, the scientifi c community has focused its interest on advanced lithium-ion and fuel cells with only incremental improvements being made. Lithium-ion technology in particular is predicted to reach an asymptotic limit in specifi c Lithium/air is a fascinating energy storage system. The effective exploitation of air as a battery electrode has been the long-time dream of the battery community. Air is, in principle, a no-cost material characterized by a very high specifi c capacity value. In the particular case of the lithium/air system, energy levels approaching that of gasoline have been postulated. It is then not surprising that, in the course of the last decade, great attention has been devoted to this battery by various top academic and industrial laboratories worldwide. This intense investigation, however, has soon highlighted a series of issues that prevent a rapid development of the Li/air electrochemical system. Although several breakthroughs have be...

show abstract

“…Ketjen Black, Super P, and Vulcan XC-72), a polymer binder (e.g. polyvinylidene fluoride and polytetrafluoroethylene), and an optional catalyst on a carbon fiber membrane or a metal current collector [9][10][11][12][13]. However, these polymer binders do not have sufficient stability against superoxide radical anions and/or Li 2 O 2 , and hence form decomposition products during the discharge/charge cycling [17][18][19].…”

Section: Introductionmentioning

confidence: 97%

“…Accordingly, there have been many efforts to develop effective cathodes in order to improve the performance of Li-O 2 batteries [9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Flexible binder-free graphene paper cathodes for high-performance Li-O2 batteries

Kim

et al. 2015

Carbon

View full text Add to dashboard Cite

Ultra-low overpotential and high rate capability in Li–O2 batteries through surface atom arrangement of PdCu nanocatalysts

Cited by 200 publications

References 41 publications

Carbon-free and two-dimensional cathode structure based on silicene for lithium–oxygen batteries: A first-principles calculation

Carbon-free and two-dimensional cathode structure based on silicene for lithium–oxygen batteries: A first-principles calculation

The Lithium/Air Battery: Still an Emerging System or a Practical Reality?

Flexible binder-free graphene paper cathodes for high-performance Li-O2 batteries

Contact Info

Product

Resources

About