scholarly journals The Cellulose Nanofibers for Optoelectronic Conversion and Energy Storage

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Yongfeng Luo ◽  
Jianxiong Zhang ◽  
Xi Li ◽  
Chunrong Liao ◽  
Xianjun Li
Keyword(s):  
Energy Storage ◽  
Cellulose Nanofibers ◽  
Optoelectronic Device ◽  
Nanostructured Material ◽  
The Novel ◽  
Energy Storage Devices ◽  
Tempo Oxidation ◽  
Environment Friendly ◽  
Storage Devices ◽  
Low Thermal Expansion

Cellulose widely exists in plant tissues. Due to the large pores between the cellulose units, the regular paper is nontransparent that cannot be used in the optoelectronic devices. But some chemical and physical methods such as 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO) oxidation can be used to improve the pores scale between the cellulose units to reach nanometer level. The cellulose nanofibers (CNFs) have good mechanical strength, flexibility, thermostability, and low thermal expansion. The paper made of these nanofibers represent a kind of novel nanostructured material with ultrahigh transparency, ultrahigh haze, conductivity, biodegradable, reproducible, low pollution, environment friendly and so on. These advantages make the novel nanostructured paper apply in the optoelectronic device possible, such as electronics energy storage devices. This kind of paper is considered most likely to replace traditional materials like plastics and glass, which is attracting widespread attention, and the related research has also been reported. The purpose of this paper is to review CNFs which are applied in optoelectronic conversion and energy storage.

scholarly journals Oriented Graphenes from Plasma-Reformed Coconut Oil for Supercapacitor Electrodes

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1679 ◽  
Author(s):  
Shailesh Kumar ◽  
Phil Martin ◽  
Avi Bendavid ◽  
John Bell ◽  
Kostya (Ken) Ostrikov
Keyword(s):  
Energy Storage ◽  
Coconut Oil ◽  
Single Step ◽  
Energy Storage Devices ◽  
Graphene Nanosheet ◽  
Environment Friendly ◽  
Storage Devices ◽  
Surface Functionality ◽  
Scan Rate ◽  
Density Surface

The utilization of vertical graphene nanosheet (VGN) electrodes for energy storage in supercapacitors has long been desired yet remains challenging, mostly because of insufficient control of nanosheet stacking, density, surface functionality, and reactivity. Here, we report a single-step, scalable, and environment-friendly plasma-assisted process for the fabrication of densely packed yet accessible surfaces of forested VGNs (F-VGNs) using coconut oil as precursor. The morphology of F-VGNs could be controlled from a continuous thick structure to a hierarchical, cauliflower-like structure that was accessible by the electrolyte ions. The surface of individual F-VGNs was slightly oxygenated, while their interior remained oxygen-free. The fabricated thick (>10 μm) F-VGN electrodes presented specific capacitance up to 312 F/g at a voltage scan rate of 10 mV/s and 148 F/g at 500 mV/s with >99% retention after 1000 cycles. This versatile approach suggests realistic opportunities for further improvements, potentially leading to the integration of F-VGN electrodes in next-generation energy storage devices.

scholarly journals 3D network of cellulose-based energy storage devices and related emerging applications

2017 ◽  
Vol 4 (4) ◽  
pp. 522-545 ◽  
Author(s):  
Saikat Dutta ◽  
Jeonghun Kim ◽  
Yusuke Ide ◽  
Jung Ho Kim ◽  
Md. Shahriar A. Hossain ◽  
...  
Keyword(s):  
Energy Storage ◽  
Bacterial Cellulose ◽  
Cellulose Nanofibers ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Nanostructured Electrodes ◽  
3D Network ◽  
Natural Cellulose ◽  
Hierarchical Carbon

There has recently been a major thrust toward advanced research in the area of hierarchical carbon nanostructured electrodes derived from cellulosic resources, such as cellulose nanofibers (CNFs), which are accessible from natural cellulose and bacterial cellulose (BC).

How charge regulation and ion–surface affinity affect the differential capacitance of an electrical double layer

2020 ◽  
Vol 22 (32) ◽  
pp. 18229-18238
Author(s):  
Amanda B. Quadre ◽  
Sidney J. de Carvalho ◽  
Guilherme Volpe Bossa
Keyword(s):  
Energy Storage ◽  
Double Layer ◽  
Electrical Double Layer ◽  
Electric Double Layer ◽  
Differential Capacitance ◽  
Energy Storage Devices ◽  
Environment Friendly ◽  
Storage Devices ◽  
Charge Regulation

The differential capacitance of an electrical double layer is a topic of great importance to develop more efficient and environment-friendly energy storage devices: electric double layer supercapacitors.

Smart nanopaper based on cellulose nanofibers with hybrid PEDOT:PSS/polypyrrole for energy storage devices

2017 ◽  
Vol 165 ◽  
pp. 86-95 ◽  
Author(s):  
Makara Lay ◽  
M. Àngels Pèlach ◽  
Neus Pellicer ◽  
Joaquim A. Tarrés ◽  
Kim Ngun Bun ◽  
...  
Keyword(s):  
Energy Storage ◽  
Cellulose Nanofibers ◽  
Energy Storage Devices ◽  
Storage Devices

scholarly journals Hybridisation of battery, supercapacitor and hybrid capacitor for load applications with high crest factors: a case study of electric vehicles

2019 ◽  
Vol 16 (2) ◽  
pp. 614
Author(s):  
Immanuel Ninma Jiya ◽  
Nicoloy Gurusinghe ◽  
Rupert Gouws
Keyword(s):  
Energy Storage ◽  
Electric Vehicles ◽  
The Novel ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Multiple Input ◽  
Optimum Utilization ◽  
Hybrid Capacitors ◽  
Charge Discharge

This paper proposes a novel topology of hybridizing battery, supercapacitor and hybrid capacitor for optimum utilization of energy in electric vehicles. Hybridization of energy storage has been the theme of much research in the field of power electronics as it is an effective economic solution towards improving the utilization of energy. Batteries have fallen short in comparison to both supercapacitors and hybrid capacitors because of their low power density and limited charge-discharge cycle. Most of the previous research in this field focuses on hybridizing either supercapacitor or hybrid capacitor with the battery but not both. This paper deals with the combination of both supercapacitor and hybrid capacitor with the battery thus addressing the problem of the lack of autonomy between two recharge points in supercapacitors, three hybridization techniques are considered and the balance point of the supercapacitor and hybrid capacitor banks is presented. The prospects of using a multiple-input DC-DC converter is also analyzed. An experimental electric vehicle profile was used to verify the proposed topology and the results are presented. The application of the novel hybridization of the three energy storage devices can be extended to other applications having a load profile with high crest factors.

An aqueous hybrid electrolyte for low-temperature zinc-based energy storage devices

2020 ◽  
Vol 13 (10) ◽  
pp. 3527-3535 ◽  
Author(s):  
Nana Chang ◽  
Tianyu Li ◽  
Rui Li ◽  
Shengnan Wang ◽  
Yanbin Yin ◽  
...  
Keyword(s):  
Energy Storage ◽  
Low Temperature ◽  
Energy Storage Devices ◽  
Storage Devices

A frigostable aqueous hybrid electrolyte enabled by the solvation interaction of Zn2+–EG is proposed for low-temperature zinc-based energy storage devices.

Ultrathin Carbon Nanosheets for Highly-efficient Capacitive K-ion and Zn-ion Storage

2020 ◽  
Author(s):  
Yamin Zhang ◽  
Zhongpu Wang ◽  
Deping Li ◽  
Qing Sun ◽  
Kangrong Lai ◽  
...  
Keyword(s):  
Energy Storage ◽  
Porous Carbon ◽  
Metal Ion ◽  
Rate Capability ◽  
Energy Storage Devices ◽  
Capacity Retention ◽  
Carbon Nanosheets ◽  
Storage Devices ◽  
High Efficient ◽  
Ion Storage

<p></p><p>Porous carbon has attracted extensive attentions as the electrode material for various energy storage devices considering its advantages like high theoretical capacitance/capacity, high conductivity, low cost and earth abundant inherence. However, there still exists some disadvantages limiting its further applications, such as the tedious fabrication process, limited metal-ion transport kinetics and undesired structure deformation at harsh electrochemical conditions. Herein, we report a facile strategy, with calcium gluconate firstly reported as the carbon source, to fabricate ultrathin porous carbon nanosheets. <a>The as-prepared Ca-900 electrode delivers excellent K-ion storage performance including high reversible capacity (430.7 mAh g<sup>-1</sup>), superior rate capability (154.8 mAh g<sup>-1</sup> at an ultrahigh current density of 5.0 A g<sup>-1</sup>) and ultra-stable long-term cycling stability (a high capacity retention ratio of ~81.2% after 4000 cycles at 1.0 A g<sup>-1</sup>). </a>Similarly, when being applied in Zn-ion capacitors, the Ca-900 electrode also exhibits an ultra-stable cycling performance with ~90.9% capacity retention after 4000 cycles at 1.0 A g<sup>-1</sup>, illuminating the applicable potentials. Moreover, the origin of the fast and smooth metal-ion storage is also revealed by carefully designed consecutive CV measurements. Overall, considering the facile preparation strategy, unique structure, application flexibility and in-depth mechanism investigations, this work will deepen the fundamental understandings and boost the commercialization of high-efficient energy storage devices like potassium-ion/sodium-ion batteries, zinc-ion batteries/capacitors and aluminum-ion batteries.</p><br><p></p>

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