Effect of the size-selective silver clusters on lithium peroxide morphology in lithium-oxygen batteries

Jun Lu; Lei Cheng; Kah Chun Lau; Eric Tyo; Xiangyi Luo; Jianguo Wen; Dean Miller; Rajeev S. Assary; Hsien Hau Wang; Paul Redfern; Huiming Wu; Jin Bum Park; Yang Kook Sun; Stefan Vajda; Khalil Amine; Larry A. Curtiss

doi:10.1038/ncomms5895

Effect of the size-selective silver clusters on lithium peroxide morphology in lithium-oxygen batteries

Jun Lu, Lei Cheng, Kah Chun Lau, Eric Tyo, Xiangyi Luo, Jianguo Wen, Dean Miller, Rajeev S. Assary, Hsien Hau Wang, Paul Redfern, Huiming Wu, Jin Bum Park, Yang Kook Sun, Stefan Vajda^*, Khalil Amine, Larry A. Curtiss

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

189 Citations (Scopus)

Abstract

Lithium-oxygen batteries have the potential needed for long-range electric vehicles, but the charge and discharge chemistries are complex and not well understood. The active sites on cathode surfaces and their role in electrochemical reactions in aprotic lithium-oxygen cells are difficult to ascertain because the exact nature of the sites is unknown. Here we report the deposition of subnanometre silver clusters of exact size and number of atoms on passivated carbon to study the discharge process in lithium-oxygen cells. The results reveal dramatically different morphologies of the electrochemically grown lithium peroxide dependent on the size of the clusters. This dependence is found to be due to the influence of the cluster size on the formation mechanism, which also affects the charge process. The results of this study suggest that precise control of subnanometre surface structure on cathodes can be used as a means to improve the performance of lithium-oxygen cells.

Original language	English
Article number	4895
Journal	Nature Communications
Volume	5
DOIs	https://doi.org/10.1038/ncomms5895
Publication status	Published - 2014
Externally published	Yes

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Lu, J., Cheng, L., Lau, K. C., Tyo, E., Luo, X., Wen, J., Miller, D., Assary, R. S., Wang, H. H., Redfern, P., Wu, H., Park, J. B., Sun, Y. K., Vajda, S., Amine, K., & Curtiss, L. A. (2014). Effect of the size-selective silver clusters on lithium peroxide morphology in lithium-oxygen batteries. Nature Communications, 5, Article 4895. https://doi.org/10.1038/ncomms5895

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title = "Effect of the size-selective silver clusters on lithium peroxide morphology in lithium-oxygen batteries",

abstract = "Lithium-oxygen batteries have the potential needed for long-range electric vehicles, but the charge and discharge chemistries are complex and not well understood. The active sites on cathode surfaces and their role in electrochemical reactions in aprotic lithium-oxygen cells are difficult to ascertain because the exact nature of the sites is unknown. Here we report the deposition of subnanometre silver clusters of exact size and number of atoms on passivated carbon to study the discharge process in lithium-oxygen cells. The results reveal dramatically different morphologies of the electrochemically grown lithium peroxide dependent on the size of the clusters. This dependence is found to be due to the influence of the cluster size on the formation mechanism, which also affects the charge process. The results of this study suggest that precise control of subnanometre surface structure on cathodes can be used as a means to improve the performance of lithium-oxygen cells.",

author = "Jun Lu and Lei Cheng and Lau, {Kah Chun} and Eric Tyo and Xiangyi Luo and Jianguo Wen and Dean Miller and Assary, {Rajeev S.} and Wang, {Hsien Hau} and Paul Redfern and Huiming Wu and Park, {Jin Bum} and Sun, {Yang Kook} and Stefan Vajda and Khalil Amine and Curtiss, {Larry A.}",

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doi = "10.1038/ncomms5895",

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AU - Lu, Jun

AU - Cheng, Lei

AU - Lau, Kah Chun

AU - Tyo, Eric

AU - Luo, Xiangyi

AU - Wen, Jianguo

AU - Miller, Dean

AU - Assary, Rajeev S.

AU - Wang, Hsien Hau

AU - Redfern, Paul

AU - Wu, Huiming

AU - Park, Jin Bum

AU - Sun, Yang Kook

AU - Vajda, Stefan

AU - Amine, Khalil

AU - Curtiss, Larry A.

PY - 2014

Y1 - 2014

N2 - Lithium-oxygen batteries have the potential needed for long-range electric vehicles, but the charge and discharge chemistries are complex and not well understood. The active sites on cathode surfaces and their role in electrochemical reactions in aprotic lithium-oxygen cells are difficult to ascertain because the exact nature of the sites is unknown. Here we report the deposition of subnanometre silver clusters of exact size and number of atoms on passivated carbon to study the discharge process in lithium-oxygen cells. The results reveal dramatically different morphologies of the electrochemically grown lithium peroxide dependent on the size of the clusters. This dependence is found to be due to the influence of the cluster size on the formation mechanism, which also affects the charge process. The results of this study suggest that precise control of subnanometre surface structure on cathodes can be used as a means to improve the performance of lithium-oxygen cells.

AB - Lithium-oxygen batteries have the potential needed for long-range electric vehicles, but the charge and discharge chemistries are complex and not well understood. The active sites on cathode surfaces and their role in electrochemical reactions in aprotic lithium-oxygen cells are difficult to ascertain because the exact nature of the sites is unknown. Here we report the deposition of subnanometre silver clusters of exact size and number of atoms on passivated carbon to study the discharge process in lithium-oxygen cells. The results reveal dramatically different morphologies of the electrochemically grown lithium peroxide dependent on the size of the clusters. This dependence is found to be due to the influence of the cluster size on the formation mechanism, which also affects the charge process. The results of this study suggest that precise control of subnanometre surface structure on cathodes can be used as a means to improve the performance of lithium-oxygen cells.

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Effect of the size-selective silver clusters on lithium peroxide morphology in lithium-oxygen batteries

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