Model of a structural battery and its potential for system level mass savings

Johannisson, Wilhelm; Zenkert, Dan; Lindbergh, Göran

doi:10.1088/2399-7532/ab3bdd

Cited by 68 publications

(49 citation statements)

References 62 publications

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“…Here, the electrical energy storage is integrated in the structural material of the vehicle—via multifunctional materials coined as “structural battery composites or structural power composites.” [ 5–8 ] Electrical energy storage in structural load paths has been shown to offer large mass savings for cars, aircraft, consumer electronics, etc. [ 9–15 ] Due to their multifunctionality, structural battery composites are often referred to as “mass‐less energy storage” and have the potential to revolutionize the future design of electric vehicles and devices.…”

Section: Introductionmentioning

confidence: 99%

“…[5][6][7][8] Electrical energy storage in structural load paths has been shown to offer large mass savings for cars, aircraft, consumer electronics, etc. [9][10][11][12][13][14][15] Due to their multifunctionality, structural battery composites are often referred to as "mass-less energy storage" and have the potential to revolutionize the future design of electric vehicles and devices.…”

Section: Introductionmentioning

confidence: 99%

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A Structural Battery and its Multifunctional Performance

Asp

Bouton

Carlstedt

et al. 2021

Adv Energy and Sustain Res

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148

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Engineering materials that can store electrical energy in structural load paths can revolutionize lightweight design across transport modes. Stiff and strong batteries that use solid‐state electrolytes and resilient electrodes and separators are generally lacking. Herein, a structural battery composite with unprecedented multifunctional performance is demonstrated, featuring an energy density of 24 Wh kg−1 and an elastic modulus of 25 GPa and tensile strength exceeding 300 MPa. The structural battery is made from multifunctional constituents, where reinforcing carbon fibers (CFs) act as electrode and current collector. A structural electrolyte is used for load transfer and ion transport and a glass fiber fabric separates the CF electrode from an aluminum foil‐supported lithium–iron–phosphate positive electrode. Equipped with these materials, lighter electrical cars, aircraft, and consumer goods can be pursued.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Structural Battery and its Multifunctional Performance

Asp

Bouton

Carlstedt

et al. 2021

Adv Energy and Sustain Res

Self Cite

148

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“…An alternative interpretation of the optimization of the multifunctional materials was proposed by Johannisson et al [ 28 ]. This approach instead focused on calculating the mass of the structural battery m SB and compared it to the combined mass of an equivalent carbon fiber composite plate m CC and of a standard lithium-ion battery m LiB .…”

Section: Multifunctionality Evaluation Methodsmentioning

confidence: 99%

“… Conceptualization of composite structural batteries. ( a ) Laminated structural battery from Johannisson et al [ 28 ]. ( b ) 3D structural battery from Carlson et al [ 24 ].…”

Section: Figurementioning

confidence: 99%

Structural Batteries: A Review

et al. 2021

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Structural power composites stand out as a possible solution to the demands of the modern transportation system of more efficient and eco-friendly vehicles. Recent studies demonstrated the possibility to realize these components endowing high-performance composites with electrochemical properties. The aim of this paper is to present a systematic review of the recent developments on this more and more sensitive topic. Two main technologies will be covered here: (1) the integration of commercially available lithium-ion batteries in composite structures, and (2) the fabrication of carbon fiber-based multifunctional materials. The latter will be deeply analyzed, describing how the fibers and the polymeric matrices can be synergistically combined with ionic salts and cathodic materials to manufacture monolithic structural batteries. The main challenges faced by these emerging research fields are also addressed. Among them, the maximum allowable curing cycle for the embedded configuration and the realization that highly conductive structural electrolytes for the monolithic solution are noteworthy. This work also shows an overview of the multiphysics material models developed for these studies and provides a clue for a possible alternative configuration based on solid-state electrolytes.

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“…[24][25][26][27] However, it is notable that this approach results in no gravimetric advantage for the system compared to simply just externally connecting the battery, and can result in a mechanical disadvantage for the composite at the battery packaging/epoxy interface. With this said, only recently have approaches been demonstrated for direct integration of battery materials into structural composites, but these approaches so far have demonstrated negligibly low energy density relative to the total mass of combined active and composite materials with moderate cycling stability [28][29][30][31][32][33][34][35][36][37] or moderate energy density and low cycling stability. 38 Outside of structural batteries, it is known that surfaces and interfaces are critical to achieve stable, high performance energy storage.…”

Section: Introductionmentioning

confidence: 99%