The Effect of Operation Conditions on the Performance of Lithium/Oxygen Batteries

Mirzaeian, Mojtaba; Hall, Peter; Sillars, Fiona B.; Fletcher, Isobel; Goldin, Mark M.; Shitta-Bey, Gbolahan O.; Jirandehi, Hassan Fathinejad

doi:10.1149/2.036301jes

Cited by 21 publications

(20 citation statements)

References 24 publications

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“…This mechanism has been described in several previous works, either by modeling 59,63,64 or based on experimental evidence. 35,[65][66][67][68] In our case, we observe that usually the slope of the capacitive part is not signicantly affected. A passivation of most of the active electrode surface (i.e.…”

Section: Electrochemical Propertiesmentioning

confidence: 48%

Effects of architecture on the electrochemistry of binder-free inverse opal carbons as Li–air cathodes in an ionic liquid-based electrolyte

et al. 2013

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In this work, different electrodes consisting of a layer of nanostructured binderless carbon supported on a stainless steel (SS) mesh have been developed and tested as cathodes for Li-air batteries. Inverse opal (IO) carbons were developed using poly(styrene-co-methacrylic acid) (PS-MAA) spheres of different sizes as templates via a resorcinol-formaldehyde sol-gel process. The resulting electrodes, which were mechanically stable and easy to manipulate, were electrochemically tested at both 25 and 60 C by galvanostatic cycling in an ionic liquid-based electrolyte (0.3 M LiTFSI in PYR14TFSI). Different ratios of co-monomers used in the preparation of the template polymeric spheres to control their size significantly influenced the resulting surface area, pore volume and pore distribution in IO carbons of different macropore size. From the electrochemical characterisation, transverse trends in reversibility and rate capability were identified depending on the macropore size of the inverse opal carbon. Smaller pores favor a better charge-discharge reversibility. Large pores contribute to an improved rate capability and large capacity, which are likely due, respectively, to deeper oxygen diffusion into the electrode, and to larger pore bottlenecks.

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Section: Electrochemical Propertiesmentioning

confidence: 48%

Effects of architecture on the electrochemistry of binder-free inverse opal carbons as Li–air cathodes in an ionic liquid-based electrolyte

et al. 2013

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“…[26][27][28] Control of cutoff voltage is also proven to further reduce the side reactions in Li-O 2 battery. 29 Similar operation strategies have also been used for Si-based anode in lithium ion batteries to minimize the disruption to Si and its SEI for fundamental understanding. 30,31 Similarly, in order to regulate the thickness of Li 2 S 2 /Li 2 S passivation film deposited on KB surface, one of the most desired methods is to electrochemically control the nucleation and growth process of Li 2 S 2 /Li 2 S particles.…”

Section: Resultsmentioning

confidence: 99%

Controlled Nucleation and Growth Process of Li₂S₂/Li₂S in Lithium-Sulfur Batteries

Zheng

Wang

et al. 2013

J. Electrochem. Soc.

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Lithium-sulfur battery is a very promising energy storage system because of its high specific energy density. However, the dissolution and precipitation of soluble polysulfides during cycling initiate a series of chain reactions that significantly shorten battery lifespan. In order to understand the interfacial reactions occuring on the electrode surfaces, we employ a convenient electrochemical strategy to regulate the nucleation and precipitation of polysulfides on the electrode surface. The accumulation of detrimental Li 2 S on cathode is largely alleviated thus enabling very stable cycling of Li-S batteries. For example, more than 760 stable cycling are demonstrated with a reversible capacity of 500 mAh g −1 . More importantly, the exposure of new lithium metal surface to the S-containing electrolyte is also greatly reduced through this strategy, largely minimizing the anode corrosion caused by polysulfides. The fundamental findings of this work provide valuable information on the electrochemical redistribution process of sulfur, which is unavoidable, during cycling and the corresponding anode evolutions under different testing conditions. Lithium-sulfur (Li-S) battery is one of the most promising candidates for green transportation and large-scale energy storage technology because it potentially has three to five time higher theoretical energy density than those of the state-of-the-art lithium ion batteries (LIBs). 1-5 Sulfur also has attractive features including natural abundance, low cost and environmental benignity. However, several challenges have to be overcome before the application of this technology in a broad scale. The most severe problem is related to the intermediate long-chain polysulfides (Li 2 S 8 /Li 2 S 6 /Li 2 S 4 ), which dissolve in the electrolyte once formed. Some of the soluble species may easily diffuse onto lithium metal anode and participate in the well described 'sulfur shuttle mechanism'. 2,6 The undesired shuttle effect leads to the low Coulombic efficiency, precipitation of insoluble/insulating Li 2 S 2 /Li 2 S onto cell components besides cathode. The end result is continuous loss of active sulfur species and rapid capacity degradation.Different strategies have been reported to address the aforementioned issues. For the cathode, various host materials have been employed to immobilize polysulfides, including porous carbons, 2,7-9 graphene, 1,10,11 carbon fiber cloth, 12 sulfurized polymers 13-15 and metal organic framework. 16 While those methods effectively slow down the migration process of polysulfides and provide important information on the fundamental understanding from molecular level, 1,16

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“…Among various issues affecting Li-air battery performance generally, the low level of performance of the air cathode has been identified as the dominating factor. 120 At the same time, improvements to any or all of the Li anode, [121][122][123][124][125][126][127][128][129][130][131][132] operating atmosphere, [133][134][135][136][137][138][139][140][141][142][143][144][145] binder, 146,147 solvents, [148][149][150][151][152][153][154][155] and lithium salts, [156][157][158][159][160][161][162][163][164][165][166] would also make meaningful contributions to enhanced overall battery performance.…”

Section: Introductionmentioning

confidence: 99%

A review of cathode materials and structures for rechargeable lithium–air batteries

Yuan

et al. 2015

Energy Environ. Sci.

436

270

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The Effect of Operation Conditions on the Performance of Lithium/Oxygen Batteries

Cited by 21 publications

References 24 publications

Effects of architecture on the electrochemistry of binder-free inverse opal carbons as Li–air cathodes in an ionic liquid-based electrolyte

Effects of architecture on the electrochemistry of binder-free inverse opal carbons as Li–air cathodes in an ionic liquid-based electrolyte

Controlled Nucleation and Growth Process of Li₂S₂/Li₂S in Lithium-Sulfur Batteries

A review of cathode materials and structures for rechargeable lithium–air batteries

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The Effect of Operation Conditions on the Performance of Lithium/Oxygen Batteries

Cited by 21 publications

References 24 publications

Effects of architecture on the electrochemistry of binder-free inverse opal carbons as Li–air cathodes in an ionic liquid-based electrolyte

Effects of architecture on the electrochemistry of binder-free inverse opal carbons as Li–air cathodes in an ionic liquid-based electrolyte

Controlled Nucleation and Growth Process of Li2S2/Li2S in Lithium-Sulfur Batteries

A review of cathode materials and structures for rechargeable lithium–air batteries

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Product

Resources

About

Controlled Nucleation and Growth Process of Li₂S₂/Li₂S in Lithium-Sulfur Batteries