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Block copolymer derived 3-D interpenetrating multifunctional gyroidal nanohybrids for electrical energy storage

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Abstract

Electrical energy storage systems such as batteries would benefit enormously from integrating all device components in three-dimensional (3-D) architectures on the nanoscale to improve their power capability without negatively impacting the device-scale energy density. However, the lack of large scale synthesis methods of 3-D architectures with precise spatial control of multiple, functional energy materials at the nanoscale remains a key issue holding back the development of such intricate device designs. To achieve fully integrated, multi-material nano-3-D architectures, next-generation nanofabrication requires departure from the traditional top-down patterning methods. Here, we present an approach to such systems based on the bottom-up synthesis of co-continuous nanohybrids with all necessary functional battery components rationally integrated in a triblock terpolymer derived core–shell double gyroid architecture. In our design three-dimensional periodically ordered, functional anode and cathode nanonetworks are separated by an ultrathin electrolyte phase within a single 3-D nanostructure. All materials are less than 20 nm in their layer dimensions, co-continuous and interpenetrating in 3-D, and extended throughout a macroscopic monolith. The electrochemical analysis of our solid-state nano-3-D Li-ion/sulfur system demonstrated battery-like characteristics with stable open circuit voltage, reversible discharge voltage and capacity, and orders of magnitude decreases in footprint area compared to two-dimensional thin layer designs.

Graphical abstract: Block copolymer derived 3-D interpenetrating multifunctional gyroidal nanohybrids for electrical energy storage

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Publication details

The article was received on 18 Dec 2017, accepted on 08 Mar 2018 and first published on 09 Mar 2018


Article type: Paper
DOI: 10.1039/C7EE03571C
Citation: Energy Environ. Sci., 2018, Advance Article
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    Block copolymer derived 3-D interpenetrating multifunctional gyroidal nanohybrids for electrical energy storage

    J. G. Werner, G. G. Rodríguez-Calero, H. D. Abruña and U. Wiesner, Energy Environ. Sci., 2018, Advance Article , DOI: 10.1039/C7EE03571C

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