Heterolayered, one-dimensional nanobuilding block mat batteries

Keun Ho Choi, Sung Ju Cho, Sang Jin Chun, Jong Tae Yoo, Chang Kee Lee, Woong Kim, Qinglin Wu, Sang Bum Park, Don Ha Choi, Sun Young Lee, Sang Young Lee

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

The rapidly approaching smart/wearable energy era necessitates advanced rechargeable power sources with reliable electrochemical properties and versatile form factors. Here, as a unique and promising energy storage system to address this issue, we demonstrate a new class of heterolayered, one-dimensional (1D) nanobuilding block mat (h-nanomat) battery based on unitized separator/electrode assembly (SEA) architecture. The unitized SEAs consist of wood cellulose nanofibril (CNF) separator membranes and metallic current collector-/polymeric binder-free electrodes comprising solely single-walled carbon nanotube (SWNT)-netted electrode active materials (LiFePO4 (cathode) and Li4Ti5O12 (anode) powders are chosen as model systems to explore the proof of concept for h-nanomat batteries). The nanoporous CNF separator plays a critical role in securing the tightly interlocked electrode-separator interface. The SWNTs in the SEAs exhibit multifunctional roles as electron conductive additives, binders, current collectors and also non-Faradaic active materials. This structural/physicochemical uniqueness of the SEAs allows significant improvements in the mass loading of electrode active materials, electron transport pathways, electrolyte accessibility and misalignment-proof of separator/electrode interface. As a result, the h-nanomat batteries, which are easily fabricated by stacking anode SEA and cathode SEA, provide unprecedented advances in the electrochemical performance, shape flexibility and safety tolerance far beyond those achievable with conventional battery technologies. We anticipate that the h-nanomat batteries will open 1D nanobuilding block-driven new architectural design/opportunity for development of next-generation energy storage systems.

Original languageEnglish
Pages (from-to)5677-5686
Number of pages10
JournalNano Letters
Volume14
Issue number10
DOIs
Publication statusPublished - 2014 Oct 8

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separators
Separators
electric batteries
Electrodes
electrodes
assembly
energy storage
cellulose
Cellulose
accumulators
Energy storage
Binders
Anodes
Cathodes
anodes
cathodes
Architectural design
Single-walled carbon nanotubes (SWCN)
uniqueness
Electrochemical properties

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Choi, K. H., Cho, S. J., Chun, S. J., Yoo, J. T., Lee, C. K., Kim, W., ... Lee, S. Y. (2014). Heterolayered, one-dimensional nanobuilding block mat batteries. Nano Letters, 14(10), 5677-5686. https://doi.org/10.1021/nl5024029

Heterolayered, one-dimensional nanobuilding block mat batteries. / Choi, Keun Ho; Cho, Sung Ju; Chun, Sang Jin; Yoo, Jong Tae; Lee, Chang Kee; Kim, Woong; Wu, Qinglin; Park, Sang Bum; Choi, Don Ha; Lee, Sun Young; Lee, Sang Young.

In: Nano Letters, Vol. 14, No. 10, 08.10.2014, p. 5677-5686.

Research output: Contribution to journalArticle

Choi, KH, Cho, SJ, Chun, SJ, Yoo, JT, Lee, CK, Kim, W, Wu, Q, Park, SB, Choi, DH, Lee, SY & Lee, SY 2014, 'Heterolayered, one-dimensional nanobuilding block mat batteries', Nano Letters, vol. 14, no. 10, pp. 5677-5686. https://doi.org/10.1021/nl5024029
Choi KH, Cho SJ, Chun SJ, Yoo JT, Lee CK, Kim W et al. Heterolayered, one-dimensional nanobuilding block mat batteries. Nano Letters. 2014 Oct 8;14(10):5677-5686. https://doi.org/10.1021/nl5024029
Choi, Keun Ho ; Cho, Sung Ju ; Chun, Sang Jin ; Yoo, Jong Tae ; Lee, Chang Kee ; Kim, Woong ; Wu, Qinglin ; Park, Sang Bum ; Choi, Don Ha ; Lee, Sun Young ; Lee, Sang Young. / Heterolayered, one-dimensional nanobuilding block mat batteries. In: Nano Letters. 2014 ; Vol. 14, No. 10. pp. 5677-5686.
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