Free Standing Hierarchically-Structured Electrodes for Energy Storage Devices

2014 ◽  
Keyword(s):  
Energy Storage ◽  
Energy Storage Devices ◽  
Free Standing ◽  
Storage Devices

A bismuth oxide nanosheet-coated electrospun carbon nanofiber film: a free-standing negative electrode for flexible asymmetric supercapacitors

2016 ◽  
Vol 4 (42) ◽  
pp. 16635-16644 ◽  
Author(s):  
Lu Li ◽  
Xitian Zhang ◽  
Zhiguo Zhang ◽  
Mingyi Zhang ◽  
Lujia Cong ◽  
...  
Keyword(s):  
Energy Storage ◽  
Bismuth Oxide ◽  
Carbon Nanofiber ◽  
Negative Electrode ◽  
Next Generation ◽  
Energy Storage Devices ◽  
Free Standing ◽  
Asymmetric Supercapacitors ◽  
Storage Devices ◽  
Nanofiber Film

The development of a negative electrode for supercapacitors is very critical for the next-generation of energy-storage devices while it remains a great challenge.

Free-Standing 3D-Sponged Nanofiber Electrodes for Ultrahigh-Rate Energy-Storage Devices

2018 ◽  
Vol 10 (40) ◽  
pp. 34140-34146 ◽  
Author(s):  
Marco Agostini ◽  
Du Hyun Lim ◽  
Sergio Brutti ◽  
Niklas Lindahl ◽  
Jou Hyeon Ahn ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Storage Devices ◽  
Free Standing ◽  
Storage Devices

Efficient high active mass paper-based energy-storage devices containing free-standing additive-less polypyrrole–nanocellulose electrodes

2014 ◽  
Vol 2 (21) ◽  
pp. 7711-7716 ◽  
Author(s):  
Zhaohui Wang ◽  
Petter Tammela ◽  
Peng Zhang ◽  
Maria Strømme ◽  
Leif Nyholm
Keyword(s):  
Energy Storage ◽  
Charge Storage ◽  
Energy Storage Devices ◽  
Free Standing ◽  
Free Paper ◽  
Active Mass ◽  
Storage Devices ◽  
Storage Performance ◽  
Novel Approach

A novel approach is employed to fabricate free-standing and additive-free paper electrodes containing up to 90 wt% polypyrrole (PPy), and with PPy mass loadings up to 20 mg cm−2, which demonstrates excellent charge storage performance for paper-based energy storage devices.

scholarly journals Nanocellulose-Based Conductive Membranes for Free-Standing Supercapacitors: A Review

Membranes ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 74 ◽  
Author(s):  
Helen H. Hsu ◽  
Wen Zhong
Keyword(s):  
Energy Storage ◽  
Volume Ratio ◽  
Composite Membranes ◽  
Energy Storage Devices ◽  
Free Standing ◽  
Suitable Material ◽  
Storage Devices ◽  
Conductive Materials ◽  
Specific Strength ◽  
Conductive Membranes

There is currently strong demand for the development of advanced energy storage devices with inexpensive, flexibility, lightweight, and eco-friendly materials. Cellulose is considered as a suitable material that has the potential to meet the requirements of the advanced energy storage devices. Specifically, nanocellulose has been shown to be an environmentally friendly material that has low density and high specific strength, Young’s modulus, and surface-to-volume ratio compared to synthetic materials. Furthermore, it can be isolated from a variety of plants through several simple and rapid methods. Cellulose-based conductive composite membranes can be assembled into supercapacitors to achieve free-standing, lightweight, and flexible energy storage devices. Therefore, they have attracted extensive research interest for the development of small-size wearable devices, implantable sensors, and smart skin. Various conductive materials can be loaded onto nanocellulose substrates to endow or enhance the electrochemical performance of supercapacitors by taking advantage of the high loading capacity of nanocellulose membranes for brittle conductive materials. Several factors can impact the electronic performance of a nanocellulose-based supercapacitor, such as the methods of loading conductive materials and the types of conductive materials, as will be discussed in this review.

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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