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2017 ; 7
(ä): 42233
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3D Printed Graphene Based Energy Storage Devices
#MMPMID28256602
Foster CW
; Down MP
; Zhang Y
; Ji X
; Rowley-Neale SJ
; Smith GC
; Kelly PJ
; Banks CE
Sci Rep
2017[Mar]; 7
(ä): 42233
PMID28256602
show ga
3D printing technology provides a unique platform for rapid prototyping of
numerous applications due to its ability to produce low cost 3D printed
platforms. Herein, a graphene-based polylactic acid filament (graphene/PLA) has
been 3D printed to fabricate a range of 3D disc electrode (3DE) configurations
using a conventional RepRap fused deposition moulding (FDM) 3D printer, which
requires no further modification/ex-situ curing step. To provide
proof-of-concept, these 3D printed electrode architectures are characterised both
electrochemically and physicochemically and are advantageously applied as
freestanding anodes within Li-ion batteries and as solid-state supercapacitors.
These freestanding anodes neglect the requirement for a current collector, thus
offering a simplistic and cheaper alternative to traditional Li-ion based setups.
Additionally, the ability of these devices' to electrochemically produce hydrogen
via the hydrogen evolution reaction (HER) as an alternative to currently utilised
platinum based electrodes (with in electrolysers) is also performed. The 3DE
demonstrates an unexpectedly high catalytic activity towards the HER (-0.46?V vs.
SCE) upon the 1000th cycle, such potential is the closest observed to the desired
value of platinum at (-0.25?V vs. SCE). We subsequently suggest that 3D printing
of graphene-based conductive filaments allows for the simple fabrication of
energy storage devices with bespoke and conceptual designs to be realised.