Electrical properties of 3D printed graphite cellular lattice structures with triply periodic minimal surface architectures

Ye, Xicong; Lin, Xian-Can; Xiong, Jin-Yan; Wu, Haihua; Zhao, Guangwei; Dong, Fang

doi:10.1088/2053-1591/ab569b

Cited by 14 publications

(4 citation statements)

References 31 publications

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“…This study's combination of theoretical calculations and experimental characterization first explores how the periodic geometry of a lattice impacts the electrical behavior, providing a basis for understanding which lattice structures are optimal for applications in energy storage devices. Figure 1a illustrates a brief summary of pore size and lattice structure used in this work and reported in recent literature on 3D printed conductive lattice materials, [12][13][14][15][16] including those applied in energy storage devices such as batteries [7][8][9][10]17] and supercapacitors, [4][5][6]18] a complete list of works referenced can be found in Table S1 (Supporting Information). The majority of works in this area have utilized 3D printers capable of manufacturing strut sizes in the range of 100 μm-1 mm due to equip-ment limitations and physical limitations pertaining to the mechanical properties of free-standing 3D polymer structures.…”

Section: Resultsmentioning

confidence: 99%

Graph Theory Design of 3D Printed Conductive Lattice Electrodes

Huddy

Tiwari

Hongpeng

et al. 2023

Adv Materials Technologies

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Abstract3D printing has the promising capability to fabricate engineered lattice structures with broadly tunable surface area and optimal geometries for maximizing structural and functional properties. This study characterizes the electrical conductivity of 3D lattices of varying size, structure, and porosity to guide additively manufactured electrode design in energy storage devices. Graph theory‐based calculations and experiments comparing the conductivity of multiple strut lattice structures and illustrating the scaling laws governing architectures with either coated or solid conductive struts are presented. The lightweight lattices explored here show higher conductivity than random foams that lack a periodic mesostructure. It is experimentally demonstrated that the 3D lattice type influences the specific capacity when employed in supercapacitors, outperforming 2D supercapacitor counterparts, and other 3D printed electrodes while allowing for optimization of the design for different energy storage applications. Additionally, it is shown that tuning the physical structure of the lattices allows for precise control over the electrical response to mechanical loading, as confirmed through experimental measurements. The lattice structure programs the electrodes’ mechanical stiffness, with higher relative density samples showing higher Young's modulus. These results can serve to guide the design of 3D printed electrodes in a variety of electrochemical and electromechanical device applications.

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Section: Resultsmentioning

confidence: 99%

Graph Theory Design of 3D Printed Conductive Lattice Electrodes

Huddy

Tiwari

Hongpeng

et al. 2023

Adv Materials Technologies

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“…At the same time, we expect MiniSurf to have a broad impact on multidisciplinary studies far beyond the solid mechanics field. The interest of the engineering community in TPMS shell-based materials is documented in several recent studies where TPMS-based architected materials are manufactured and investigated for their multifunctionality, including (1) thermal properties (e.g., thermal conductivity [46,47], coefficient of thermal expansion [48] and heat exchange [49][50][51]), (2) acoustic properties (e.g., sound absorption and acoustic bandgaps [52,53] and audible coloration [54]) and (3) electrochemical properties (e.g., electrical conductivity [55,56]).…”

Section: Impact Overviewmentioning

confidence: 99%

Minisurf – A minimal surface generator for finite element modeling and additive manufacturing

Hsieh

Valdevit

2020

Software Impacts

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“…Triply periodic minimal surface (TPMS) architectures have been demonstrated as a suitable choice for scaffolds owing to their tailorable mechanical and functional characteristics [56][57][58]. Recently, the thermal [59], electrical [60], fluid flow [61] and heat exchange [62][63][64] characteristics of different TPMS architectures have been explored. The smooth inter-connected pores within the TPMS geometry provides a large heat exchange surface area making it a suitable candidate for heat exchangers [65,66].…”

Section: Introductionmentioning

confidence: 99%