A Li–O2/CO2 battery

Takechi, Kensuke; Shiga, Tohru; Asaoka, Takahiko

doi:10.1039/c0cc05176d

Cited by 285 publications

(281 citation statements)

References 11 publications

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“…Based on the reported results and the observations above, we propose the following preliminary view of the reaction mechanisms for the Na-O 2 /CO 2 cell. Mechanism 1 [10,13]: [14]. Since Na 2 C 2 O 4 is a discharge product, the following reactions are also possible:…”

Section: Resultsmentioning

confidence: 99%

“…Unlike the Li-O 2 /CO 2 battery [10], which specifically aims to use CO 2 to enhance the energy density of the Li-O 2 cell, the current work focuses on metal-CO 2 /O 2 batteries as platforms for CO 2 capture in a technology that also produces electrical energy. Both of these goals are met using a "primary" battery, i.e.…”

Section: Introductionmentioning

confidence: 99%

“…A metal-air battery that utilizes a mixed fuel of CO 2 and O 2 provides a potentially novel platform for electrical energy generation and carbon capture [9]. Recently, researchers at Toyota reported that incorporation of CO 2 with O 2 improves the energy density of a Li-O 2 battery [10], indicating that there may be other benefits for incorporating CO 2 in other metal-air batteries.…”

Section: Introductionmentioning

confidence: 99%

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Carbon dioxide assist for non-aqueous sodium–oxygen batteries

Das

Archer

2013

Electrochemistry Communications

116

108

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We report a novel non-aqueous Na-air battery that utilizes a gas mixture of CO 2 and O 2 . The battery exhibits a high specific energy of 6500-7000 Whkg −1 (based on the carbon mass) over a range of CO 2 feed compositions. The energy density achieved is higher, by 200% to 300%, than that obtained in pure oxygen. Ex-situ FTIR and XRD analysis reveal that Na 2 O 2 , Na 2 C 2 O 4 and Na 2 CO 3 are the principal discharge products. The Na-CO 2 /O 2 and Mg-CO 2 /O 2 battery platforms provide a promising, new approach for CO 2 capture and generation of electrical energy.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Carbon dioxide assist for non-aqueous sodium–oxygen batteries

Das

Archer

2013

Electrochemistry Communications

116

108

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“…CO 2 and moisture in the ambient air can signifi cantly infl uence the electrochemical performance of a lithium/air cell with a negative impact over cyclability, even in small amounts. [36][37][38] For instance, lithium metal can react with H 2 O traces in the air and generate LiOH and H 2 . Aurbach and co-workers [ 36,37 ] reported that CO 2 also reacts with the Li + ions forming Li 2 CO 3 on the electrode surface, while Takechi et al [ 38 ] demonstrated that Li 2 CO 3 can form from the reaction between CO 2 and Li 2 O 2 .…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2014

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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...

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“…An emerging branch of rechargeable batteries is based on the metal-air chemistry, featuring extremely high specific energy (W h kg À1 )/energy density (W h L À1 ) and inexhaustible and storage-free cathode reactants. [1][2][3][4][5][6][7][8][9][10][11] However, key issues limiting the commercial development of the conventional metal-air batteries (e.g., lithium-air, iron-air and zinc-air) for mid-scale transportation and large-scale stationary applications are the poor reversibility and low rate capacity arising from technical issues such as congestion of airpathways by the formation of condensed oxides, 6 precipitation of carbonates in electro-catalyst's pores in the air-electrode, 7,8 and evaporation/decomposition of liquid organic solvent electrolytes. 7,[9][10][11] Recently, we demonstrated a novel concept of the ''all solid-state metal-air battery'' that innovatively combines a regenerative solid oxide fuel cell (or RSOFC) and a chemical-looping redox cycle unit (RCU).…”

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confidence: 99%