Graphene for batteries

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Graphene Based Electrodes for Rechargable Batteries Poster · May 2017

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3 authors: Daniel Cíntora Juárez

Álvaro Doñoro

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Madrid Institute for Advanced Studies

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Graphene Based Electrodes for Rechargable Batteries Daniel Cíntora; Álvaro Doñoro; Vinodkumar Etacheri* Electrochemistry Group, IMDEA Materials Institute, C/ Eric Kandel 2, Getafe, Madrid 28906, Spain [email protected]

introduction

Graphene’s two dimensional structure gives rise to its exceptional properties,[1] which added to its low weight and large electrochemically active surface area, make graphene a highly interesting material for rechargable lithium battery (RLB) electrodes.[2, 3] However, the high irreversible capacity loss and the poor cycling stability of batteries, due to the extreme reactivity of single layer graphene with the electrolyte solution, has limited their commercialization. Herein, we have demonstrated the integration of multilayered graphene nanoplatelets in Liion battery anodes and Li-S / Li-O2 battery cathodes. These electrodes demonstrated excellent electrochemical DOI: 10.1039/C3TA13033A

performance as compared to the commercial electrodes and to various carbonaceous materials reported earlier.

Lithium - ion

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Fig. 4: (a) Cycling performance of graphene nanoplatelet based Li-S system and (b) relative performance of two graphene-based batteries as compared to other energy storage systems.

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DOI: 10.1002/adma.201403064

Fig. 5: (a) Comparative of Li-O2 battery vs. other systems,[4] (b) drawbacks of Li-O2 battery, (c) scheme (d) electrochemical performance and e) image of Li-O2 coin cell [1] Geim, A. K.; Novoselov, K. S. Nat. Mater. 2007, 6, 183−191 [2] V. Etacheri , J. E. Yourey , B. M. Bartlett , ACS Nano 2014 , 8 , 14911499 [3] Wu, F; Lee, J. T; Zhao, E. Zhang, B; Yushin, G. ACS Nano 2016 , 8 , 1491-1499 [4] Bruce, P. G; Freunberger, S. A; Hardwick, L. J; Tarascon, J. M; Nat. Mater. 2012, 11, 19-29

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CONCLUSIONS

REFERENCES

Lithium - oxygen

Fig. 2: (a) Second discharge profiles and (b) galvanostatic rate performance of commercial graphite and graphene nanoplatelets at a current density of 25 mA g-1. (a)

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Fig. 3: (a) Scheme of a Li-S battery containing Li-metal anode and graphene nanoplatelet-sulfur hybrid cathode. (b) TEM image of graphene nanoplatelet-sulfur active material. (a) (b)

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Fig. 1: (a) Scheme of a Li-ion full-cell containing graphene nanoplatelet anode and LiFePO4 cathode. (b) SEM image of 5µm graphene nanoplatelets. (a) (b) 3.0

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1. Multilayered graphene nanoplatelets are successfully integrated in Li-ion, Li-S and Li-O2 battery systems. 2. These 2D-type electrodes demonstrated superior electrochemical performances compared to the current generation of carbonaceous electrodes. 3. Further performance enhancements and optimizations of rechargeable batteries containing graphene nanoplatelets are in progress.