Defect-induced plating of lithium metal within porous graphene networks

Rahul Mukherjee; Abhay V. Thomas; Dibakar Datta; Eklavya Singh; Junwen Li; Osman Eksik; Vivek B. Shenoy; Nikhil Koratkar

doi:10.1038/ncomms4710

Defect-induced plating of lithium metal within porous graphene networks

Rahul Mukherjee, Abhay V. Thomas, Dibakar Datta, Eklavya Singh, Junwen Li, Osman Eksik, Vivek B. Shenoy, Nikhil Koratkar

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

380 Scopus citations

Abstract

Lithium metal is known to possess a very high theoretical capacity of 3,842 mAhg^-1 in lithium batteries. However, the use of metallic lithium leads to extensive dendritic growth that poses serious safety hazards. Hence, lithium metal has long been replaced by layered lithium metal oxide and phospho-olivine cathodes that offer safer performance over extended cycling, although significantly compromising on the achievable capacities. Here we report the defect-induced plating of metallic lithium within the interior of a porous graphene network. The network acts as a caged entrapment for lithium metal that prevents dendritic growth, facilitating extended cycling of the electrode. The plating of lithium metal within the interior of the porous graphene structure results in very high specific capacities in excess of 850 mAhg^-1. Extended testing for over 1,000 charge/discharge cycles indicates excellent reversibility and coulombic efficiencies above 99%.

Original language	English (US)
Article number	3710
Journal	Nature communications
Volume	5
DOIs	https://doi.org/10.1038/ncomms4710
State	Published - Apr 22 2014
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Chemistry
General Biochemistry, Genetics and Molecular Biology
General Physics and Astronomy

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10.1038/ncomms4710

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title = "Defect-induced plating of lithium metal within porous graphene networks",

abstract = "Lithium metal is known to possess a very high theoretical capacity of 3,842 mAhg-1 in lithium batteries. However, the use of metallic lithium leads to extensive dendritic growth that poses serious safety hazards. Hence, lithium metal has long been replaced by layered lithium metal oxide and phospho-olivine cathodes that offer safer performance over extended cycling, although significantly compromising on the achievable capacities. Here we report the defect-induced plating of metallic lithium within the interior of a porous graphene network. The network acts as a caged entrapment for lithium metal that prevents dendritic growth, facilitating extended cycling of the electrode. The plating of lithium metal within the interior of the porous graphene structure results in very high specific capacities in excess of 850 mAhg-1. Extended testing for over 1,000 charge/discharge cycles indicates excellent reversibility and coulombic efficiencies above 99%.",

author = "Rahul Mukherjee and Thomas, {Abhay V.} and Dibakar Datta and Eklavya Singh and Junwen Li and Osman Eksik and Shenoy, {Vivek B.} and Nikhil Koratkar",

note = "Funding Information: N.K. acknowledges funding support from the USA National Science Foundation (Award 0969895) and the John A. Clark and Edward T. Crossan Chair Professorship from the Rensselaer Polytechnic Institute. R.M. and E.S. also acknowledge support from the Buhrmaster {\textquoteright}69 Grant from the Severino Center for Technological Entrepreneurship, Lally School of Management & Technology, Rensselaer Polytechnic Institute.",

year = "2014",

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day = "22",

doi = "10.1038/ncomms4710",

language = "English (US)",

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journal = "Nature communications",

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T1 - Defect-induced plating of lithium metal within porous graphene networks

AU - Mukherjee, Rahul

AU - Thomas, Abhay V.

AU - Datta, Dibakar

AU - Singh, Eklavya

AU - Li, Junwen

AU - Eksik, Osman

AU - Shenoy, Vivek B.

AU - Koratkar, Nikhil

N1 - Funding Information: N.K. acknowledges funding support from the USA National Science Foundation (Award 0969895) and the John A. Clark and Edward T. Crossan Chair Professorship from the Rensselaer Polytechnic Institute. R.M. and E.S. also acknowledge support from the Buhrmaster ’69 Grant from the Severino Center for Technological Entrepreneurship, Lally School of Management & Technology, Rensselaer Polytechnic Institute.

PY - 2014/4/22

Y1 - 2014/4/22

N2 - Lithium metal is known to possess a very high theoretical capacity of 3,842 mAhg-1 in lithium batteries. However, the use of metallic lithium leads to extensive dendritic growth that poses serious safety hazards. Hence, lithium metal has long been replaced by layered lithium metal oxide and phospho-olivine cathodes that offer safer performance over extended cycling, although significantly compromising on the achievable capacities. Here we report the defect-induced plating of metallic lithium within the interior of a porous graphene network. The network acts as a caged entrapment for lithium metal that prevents dendritic growth, facilitating extended cycling of the electrode. The plating of lithium metal within the interior of the porous graphene structure results in very high specific capacities in excess of 850 mAhg-1. Extended testing for over 1,000 charge/discharge cycles indicates excellent reversibility and coulombic efficiencies above 99%.

AB - Lithium metal is known to possess a very high theoretical capacity of 3,842 mAhg-1 in lithium batteries. However, the use of metallic lithium leads to extensive dendritic growth that poses serious safety hazards. Hence, lithium metal has long been replaced by layered lithium metal oxide and phospho-olivine cathodes that offer safer performance over extended cycling, although significantly compromising on the achievable capacities. Here we report the defect-induced plating of metallic lithium within the interior of a porous graphene network. The network acts as a caged entrapment for lithium metal that prevents dendritic growth, facilitating extended cycling of the electrode. The plating of lithium metal within the interior of the porous graphene structure results in very high specific capacities in excess of 850 mAhg-1. Extended testing for over 1,000 charge/discharge cycles indicates excellent reversibility and coulombic efficiencies above 99%.

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Defect-induced plating of lithium metal within porous graphene networks

Abstract

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