Porous Silicon Supercapacitors
Development of porous silicon supercapacitors is reviewed including the first publications and discussion on the main advantages and problems related to porous silicon electrodes. Various passivation techniques of the surface, such as sputtering of metals, graphene coating, and atomic layer deposition, are described.
MnOx-decorated carbonized porous silicon nanowire electrodes
x-coated carbonized porous silicon nanowires for high-performance supercapacitor electrode materials. The excep-tional performance of a supercapacitor device based on this hybrid electrode architecture in an organic electrolyte/organic salt is demonstrated for the first time. Porous silicon nanowires
Porous silicon electrodes for high performance integrated supercapacitors
We demonstrate high performance porous Si based supercapacitor electrodes that can be utilized in integrated micro supercapacitors. The key enabler here is ultra-thin TiN coating of the porous Si matrix leading to high power and stability. The TiN layer is deposited by atomic layer deposition (ALD), which provides sufficient conformality to reach the bottom of the high aspect ratio
Surface engineered porous silicon for stable, high performance
Surface engineered porous silicon for stable, high performance electrochemical supercapacitors Landon Oakes 1,4, Andrew Westover, Jeremy W. Mares2, Shahana Chatterjee1, William R. Erwin3,
Surface engineered porous silicon for stable, high performance
Here, we demonstrate a universal route to transform porous silicon (P-Si) into stable electrodes for electrochemical devices through growth of an ultra-thin, conformal
Grass-like alumina nanoelectrodes for hierarchical porous silicon
In this work, we enhance the capacitance of porous silicon (PS) supercapacitor electrodes up to 4× by adding a new high-surface-area nanoelectrode on the existing topography, thus forming a hierarchical 3D supercapacitor electrode that can be used in micro-supercapacitor applications. The nanoelectrode is based on grass-like alumina (GLA
Porous Silicon‐Supported Catalytic Materials for Energy
The electrochemical applications of porous silicon-based materials in energy conversion reactions and energy storage applications in lithium-ion batteries and
Surface engineered porous silicon for stable, high performance
P-Si is demonstrated as a promising new platform for grid-scale and integrated electrochemical energy storage and a technique generalizable to mesoporous and nanoporous materials that decouples the engineering of electrode structure and electrochemical surface stability to engineer performance in electrochemical environments is demonstrated. Silicon
Scientists Develop Graphene-Coated Silicon
Using porous silicon coated with graphene, material scientists at Vanderbilt University have developed the first supercapacitor that is made out of silicon. Solar cells produce electricity 24/7, not just when the sun is shining.
[PDF] Porous Silicon Supercapacitors
Development of porous silicon supercapacitors is reviewed including the first publications and discussion on the main advantages and problems related to porous silicon electrodes. Various passivation techniques of the surface, such as sputtering of metals, graphene coating, and atomic layer deposition, are described.
Supercapacitor devices using porous silicon electrodes
Electrical double layer (EDL) supercapacitors have been constructed using gold coated porous silicon (PSi) electrodes in a 0.25 M TEABF 4 /PC solution. As a comparison with the PSi,
Surface engineered porous silicon for stable, high performance
Here, we demonstrate a universal route to transform porous silicon (P-Si) into stable electrodes for electrochemical devices through growth of an ultra-thin, conformal
(PDF) Conformal Titanium Nitride in a Porous Silicon Matrix: A
In this work, we enhance the capacitance of porous silicon (PS) supercapacitor electrodes up to 4× by adding a new high-surface-area nanoelectrode on the existing topography, thus forming a
Grass-like alumina nanoelectrodes for hierarchical
In this work, we enhance the capacitance of porous silicon (PS) supercapacitor electrodes up to 4× by adding a new high-surface-area nanoelectrode on the existing topography, thus forming a
Porous silicon carbide flakes derived from waste silicon wafer for
Traditionally, porous carbonaceous materials have been widely used as EDLCs materials in order to obtain a high surface area. Mostly, activated porous carbon materials having high surface area (2000–3000 m 2 g −1) are used as electrode materials in supercapacitors with a specific capacitance around 250–350 F g −1 [7], [8], [9
Porous silicon supercapacitors
In this chapter, a short description of a supercapacitor structure, several advanced electrode materials, and device characterization techniques are presented. Development of porous
Supercapacitor devices using porous silicon electrodes
Supercapacitor Devices Using Porous Silicon Electrodes S.E. Rowlands, R. J. Latham and W. S. Schlindwein Solid State Research Centre, Faculty of Applied Sciences, Supercapacitors are unique electrochemical energy storage devices characterised by their high power storage and energy densities compared with those of advanced battery
Porous silicon electrodes for high performance integrated supercapacitors
Our porous Si supercapacitor devices exhibit almost ideal double layer capacitor characteristic with electrode volumetric capacitance of 7.3 F/cm. Several orders of magnitude increase in power and energy density is obtained comparing to uncoated porous silicon electrodes. Good stability of devices is confirmed performing over 5 000 charge
In-Depth Analysis of Porous Si Electrodes for
Graphitized porous silicon decorated with cobalt hexacyanoferrate nanocubes as hybrid electrode for high-performance supercapacitors. Electrochimica Acta2022, 424, 140632.
Porous Silicon‐Supported Catalytic Materials for Energy
Porous silicon (Si) has a tetrahedral structure similar to that of sp 3-hybridized carbon atoms in a typical diamond structure, which affords it unique chemical and physical properties including an adjustable intrinsic bandgap, a high-speed carrier transfer efficiency has shown great potential in photocatalysis, rechargeable batteries, solar cells, detectors, and
High-performance solid state
Silicon, which is the second most abundant element on our planet, is also used in the supercapacitor applications, especially in its nanostructured forms, silicon
Grass-like alumina nanoelectrodes for
In this work, we enhance the capacitance of porous silicon (PS) supercapacitor electrodes up to 4× by adding a new high-surface-area nanoelectrode on the existing topography, thus forming a
Silicon Based Supercapacitors Evolution to Integrated Passives
Porous Silicon (n/p-doped) filled with Ionic Conductor (e.g. Polypyrrol) Silicon Silicon Cut Porous Electrode • Au and Schlindwein, W.S., "Supercapacitor devices using porous silicon electrodes," Ionics 5, 144-149 (1999). Wei Sun, Ruilin Zheng, & Xuyuan Chen. Three Dimensional MEMS Supercapacitor Fabricated by DRIE on Silicon
Grass-like alumina nanoelectrodes for hierarchical porous silicon
reactive ion etched silicon beams,7 carbon microrods,8–10 inter-digital micromolded activated carbon,11 porous silicon,12 porous carbon nanotubes and/or graphene. 13,14 When using porous silicon (PS) as the active electrode material for the micro-supercapacitor, a thin TiN coating (5–30 nm) has been shown to
A carbon nanotube@silicon-based three-dimensional porous
Photo-supercapacitors (PSCs), as a reliable energy harvesting device, have been explored for self-powered applications by utilizing the photovoltaic effect of micro-supercapacitors. In this paper, we propose a self-powered PSC with bulk micro-machined three-dimensional (3D) porous asymmetric electrodes with a high-aspect ratio via deep reactive
Conformal titanium nitride in a porous silicon matrix: A nanomaterial
Silicon has received significantly less attention than carbon based materials as a supercapacitor material although, for example, porous silicon (PS) provides a very high surface area matrix with relatively well controlled and reproducible properties.
Graphitized porous silicon decorated with cobalt
The porous silicon obtained at 70 mA/cm 2 provided the best scaffold for deposition of active material in terms of capacitive properties [19]. The deposition of the organic compound was performed at lower current respectively, with those of other silicon supercapacitors, showing comparable results with similar energy densities,
Biomass-derived hierarchical porous carbon/silicon carbide
When functioned as the supercapacitor electrode, the as-prepared hierarchical porous carbon/silicon carbide material (HPC/SiC) exhibits outstanding specific capacitance of 234.2 F g −1 at the current density of 1 A g −1, excellent rate capability and cycling performance. 2. Results and discussion
Porous silicon supercapacitors
TY - CHAP. T1 - Porous silicon supercapacitors. AU - Grigoras, Kestutis. AU - Ahopelto, Jouni. AU - Prunnila, Mika. PY - 2018/7/4. Y1 - 2018/7/4. N2 - Continuous miniaturization of electronic devices for portable and wearable applications requires miniaturized and integrated energy storage solutions for which electrochemical double-layer capacitors, the so-called
Few-Layer Graphene Sheet-Passivated Porous Silicon Toward
The PSi-based supercapacitors with different porous structures have been realized by electrochemical etching of silicon wafer and subsequent passivation with graphene coating via the CVD process. The capacitive performances of the PSi EDLCs are closely related to the composition of the porous structure consisting of macropores, mesopores, and/or micropores.
Porous Silicon Supercapacitors | Request PDF
Development of porous silicon supercapacitors is reviewed including the first publications and discussion on the main advantages and problems related to porous silicon electrodes. Various
6 FAQs about [Porous silicon supercapacitor]
What is a porous silicon supercapacitor?
Our porous Si supercapacitor devices exhibit almost ideal double layer capacitor characteristic with electrode volumetric capacitance of 7.3 F/cm. Several orders of magnitude increase in power and energy density is obtained comparing to uncoated porous silicon electrodes.
Can porous Si based supercapacitor electrodes be used in integrated microsupercapacitors?
Abstract: We demonstrate high performance porous Si based supercapacitor electrodes that can be utilized in integrated micro supercapacitors. The key enabler here is ultra-thin TiN coating of the porous Si matrix leading to high power and stability.
Why are silicon materials unused for supercapacitors?
Scientific Reports 3, Article number: 3020 (2013) Cite this article Silicon materials remain unused for supercapacitors due to extreme reactivity of silicon with electrolytes.
What is a supercapacitor based on a grass-like alumina nanoelectrode?
Isakov et al. (2022) investigated a supercapacitor based on grass-like alumina nanoelectrodes and porous silicon, producing 5–11 mF cm 2 of areal capacitance and stability. They used industrially manufactured PS. In this context, associating nickel oxide with PS presents many advantages.
Can silicon be used as a high performance electrochemical capacitor?
Overall, the specific use of silicon as an earth-abundant material capable of being transformed into a high performance electrochemical capacitor through application of a thin surface coating opens new avenues both toward grid-scale and integrated device applications.
Should supercapacitors be used as electrodes?
Si itself, due to its prominence, would be a suitable candidate as a material for electrodes. Despite their performances, they still present shortcomings when put against batteries; hence, a lot of focus is put on increasing the performance of supercapacitors.