title: Toward lithium ion batteries with enhanced thermal conductivity.
abstract: As batteries become more powerful and utilized in diverse applications, thermal management becomes one of the central problems in their application. We report the results on thermal properties of a set of different Li-ion battery electrodes enhanced with multiwalled carbon nanotubes. Our measurements reveal that the highest in-plane and cross-plane thermal conductivities achieved in the carbon-nanotube-enhanced electrodes reached up to 141 and 3.6 W/mK, respectively. The values for in-plane thermal conductivity are up to 2 orders of magnitude higher than those for conventional electrodes based on carbon black. The electrodes were synthesized via an inexpensive scalable filtration method, and we demonstrate that our approach can be extended to commercial electrode-active materials. The best performing electrodes contained a layer of γ-Fe2O3 nanoparticles on carbon nanotubes sandwiched between two layers of carbon nanotubes and had in-plane and cross-plane thermal conductivities of ∼50 and 3 W/mK, respectively, at room temperature. The obtained results are important for thermal management in Li-ion and other high-power-density batteries.
authors.affiliation: Center for Nanoscale Materials and ‡Chemical Sciences and Engineering, Argonne National Laboratory , Argonne, Illinois 60439, United States.
authors.forename: Bonil
authors.initials: B
authors.lastname: Koo
authors.forename: Pradyumna
authors.initials: P
authors.lastname: Goli
authors.forename: Anirudha V
authors.initials: AV
authors.lastname: Sumant
authors.forename: Paula Cecilia
authors.initials: PC
authors.lastname: dos Santos Claro
authors.forename: Tijana
authors.initials: T
authors.lastname: Rajh
authors.forename: Christopher S
authors.initials: CS
authors.lastname: Johnson
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Balandin
authors.forename: Elena V
authors.initials: EV
authors.lastname: Shevchenko