4.6 Article

Designing Structural Electrochemical Energy Storage Systems: A Perspective on the Role of Device Chemistry

Journal

FRONTIERS IN CHEMISTRY
Volume 9, Issue -, Pages -

Publisher

FRONTIERS MEDIA SA
DOI: 10.3389/fchem.2021.810781

Keywords

structural energy storage; carbon fibers; structural batteries; structural supercapacitors; multifunctional materials; battery chemistry

Funding

  1. European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant [838892]
  2. Marie Curie Actions (MSCA) [838892] Funding Source: Marie Curie Actions (MSCA)

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Structural energy storage devices (SESDs), which can simultaneously store electrical energy and withstand mechanical loads, have great potential in reducing overall system weight in various applications. The development of true multifunctional materials is crucial for the realization of electrochemical SESDs, and the choice of device chemistries poses significant challenges.
Structural energy storage devices (SESDs), designed to simultaneously store electrical energy and withstand mechanical loads, offer great potential to reduce the overall system weight in applications such as automotive, aircraft, spacecraft, marine and sports equipment. The greatest improvements will come from systems that implement true multifunctional materials as fully as possible. The realization of electrochemical SESDs therefore requires the identification and development of suitable multifunctional structural electrodes, separators, and electrolytes. Different strategies are available depending on the class of electrochemical energy storage device and the specific chemistries selected. Here, we review existing attempts to build SESDs around carbon fiber (CF) composite electrodes, including the use of both organic and inorganic compounds to increase electrochemical performance. We consider some of the key challenges and discuss the implications for the selection of device chemistries.

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