A flexible rechargeable quasi-solid-state Ni–Fe battery based on surface engineering exhibits high energy and long durability

2018 ◽  
Vol 5 (8) ◽  
pp. 1805-1815 ◽  
Author(s):  
Wenda Qiu ◽  
Hongbing Xiao ◽  
Wenting He ◽  
Yu Li ◽  
Yexiang Tong
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Surface Engineering ◽  
Rapid Development ◽  
High Energy ◽  
Wearable Electronics ◽  
Safe Operation ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Power Densities

With the rapid development of portable and wearable electronics, energy storage devices featuring high energy and power densities, long-cycle lifetime, environment friendliness, safe operation, lightweight, ultrathin thickness and flexibilityl have become increasingly important.

Hedgehog-inspired nanostructures for hydrogel-based all-solid-state hybrid supercapacitors with excellent flexibility and electrochemical performance

Nanoscale ◽  
2018 ◽  
Vol 10 (40) ◽  
pp. 19004-19013 ◽  
Author(s):  
Pengxiao Sun ◽  
Weidong He ◽  
Hongcen Yang ◽  
Ruya Cao ◽  
Jiangmei Yin ◽  
...  
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Electrochemical Performance ◽  
Wearable Electronics ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Hybrid Supercapacitors ◽  
High Security ◽  
Power Densities ◽  
Smart Wearable

High-security deformable energy-storage devices that are mechanically robust, with considerable energy and power densities are becoming desirable for smart wearable electronics.

Understanding the reaction mechanism and performances of 3d transition metal cathodes for all-solid-state fluoride ion batteries

2021 ◽  
Vol 9 (1) ◽  
pp. 406-412
Author(s):  
Datong Zhang ◽  
Kentaro Yamamoto ◽  
Aika Ochi ◽  
Yanchang Wang ◽  
Takahiro Yoshinari ◽  
...  
Keyword(s):  
Energy Storage ◽  
Reaction Mechanism ◽  
Solid State ◽  
Transition Metal ◽  
Cathode Materials ◽  
High Energy ◽  
Fluoride Ion ◽  
Energy Storage Devices ◽  
Storage Devices

Fluoride ion batteries (FIBs) are regarded as promising energy storage devices, and it is important and urgent to develop cathode materials with high energy densities for use in FIBs.

scholarly journals Phenazine–Based Covalent Organic Framework Cathode Materials with High Energy and Power Densities

2019 ◽  
Author(s):  
Edon Vitaku ◽  
Cara Gannett ◽  
Keith Carpenter ◽  
Luxi Shen ◽  
Hector Abruna ◽  
...  
Keyword(s):  
Energy Storage ◽  
Conductive Polymer ◽  
Electrical Energy ◽  
High Energy ◽  
Energy Storage Devices ◽  
Electrical Energy Storage ◽  
Storage Devices ◽  
Redox Sites ◽  
Redox Active ◽  
Power Densities

Redox-active covalent organic frameworks (COFs) are promising materials for energy storage devices because of their high density of redox sites, permanent and controlled porosity, high surface areas, and tunable structures. However, the low electrochemical accessibility of their redox-active sites has limited COF-based devices either to thin films (<250 nm) grown on conductive substrates, or to thicker films (1 µm) when a conductive polymer is introduced into the COF pores. Electrical energy storage devices constructed from bulk microcrystalline COF powders, eliminating the need for both thin-film formation and conductive polymer guests, would offer both improved capacity and potentially scalable fabrication processes. Here we report on the synthesis and electrochemical evaluation of a new phenazine-based 2D COF (DAPH-TFP COF), as well as its composite with poly(3,4-ethylenedioxythiophene) (PEDOT). Both the COF and its PEDOT composite were evaluated as powders that were solution-cast onto bulk electrodes serving as current collectors. The unmodified DAPH-TFP COF exhibited excellent electrical access to its redox sites, even without PEDOT functionalization, and outperformed the PEDOT composite of a previously reported anthraquinone-based system. Devices containing DAPH-TFP COF were able to deliver both high energy (250 Wh/kg) and power densities (2950 W/kg), validating the promise of unmodified redox-active COFs that are easily incorporated into electrical energy storage devices.

scholarly journals Cryopolymerization enables anisotropic polyaniline hybrid hydrogels with superelasticity and highly deformation-tolerant electrochemical energy storage

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Le Li ◽  
Yu Zhang ◽  
Hengyi Lu ◽  
Yufeng Wang ◽  
Jingsan Xu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Polyvinyl Alcohol ◽  
Complete Recovery ◽  
High Energy ◽  
Continuous Phase ◽  
High Energy Density ◽  
Wearable Electronics ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Hybrid Hydrogels

AbstractThe development of energy storage devices that can endure large and complex deformations is central to emerging wearable electronics. Hydrogels made from conducting polymers give rise to a promising integration of high conductivity and versatility in processing. However, the emergence of conducting polymer hydrogels with a desirable network structure cannot be readily achieved using conventional polymerization methods. Here we present a cryopolymerization strategy for preparing an intrinsically stretchable, compressible and bendable anisotropic polyvinyl alcohol/polyaniline hydrogel with a complete recovery of 100% stretching strain, 50% compressing strain and fully bending. Due to its high mechanical strength, superelastic properties and bi-continuous phase structure, the as-obtained anisotropic polyvinyl alcohol/polyaniline hydrogel can work as a stretching/compressing/bending electrode, maintaining its stable output under complex deformations for an all-solid-state supercapacitor. In particular, it achieves an extremely high energy density of 27.5 W h kg−1, which is among that of state-of-the-art stretchable supercapacitors.

Planar all-solid-state rechargeable Zn–air batteries for compact wearable energy storage

2019 ◽  
Vol 7 (29) ◽  
pp. 17581-17593 ◽  
Author(s):  
Zhiqian Cao ◽  
Haibo Hu ◽  
Mingzai Wu ◽  
Kun Tang ◽  
Tongtong Jiang
Keyword(s):  
Energy Efficiency ◽  
Energy Storage ◽  
Solid State ◽  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Next Generation ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Novel Design

Planar all-solid-state rechargeable Zn–air batteries with superior energy efficiency demonstrate a novel design for compact all-solid-state rechargeable ZABs towards next-generation wearable energy storage devices with high energy density and safety.

In-situ Formation of Co3O4 Nanocrystals Embedded in Laser-Induced Graphene Foam for High-Energy Flexible Micro-supercapacitor

2022 ◽  
Author(s):  
Xiaohong Ding ◽  
Ruilai Liu ◽  
Jiapeng Hu ◽  
Jingyun Zhao ◽  
Jinjin Wu ◽  
...  
Keyword(s):  
Cost Effective ◽  
High Energy ◽  
Wearable Electronics ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Effective Synthesis ◽  
In Situ Formation ◽  
The Cost ◽  
Power Densities

The cost-effective synthesis of flexible energy storage devices with high energy and power densities is a challenge in wearable electronics. Here, we report a facile, efficient, and scalable approach for...

scholarly journals Review on carbonaceous materials and metal composites in deformable electrodes for flexible lithium-ion batteries

RSC Advances ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 5958-5992
Author(s):  
Jahidul Islam ◽  
Faisal I. Chowdhury ◽  
Join Uddin ◽  
Rifat Amin ◽  
Jamal Uddin
Keyword(s):  
Energy Storage ◽  
Lithium Ion Batteries ◽  
Electronic Devices ◽  
Lithium Ion ◽  
High Energy ◽  
Energy Storage Devices ◽  
Metal Composites ◽  
Storage Devices ◽  
Power Densities ◽  
Good Cycling Stability

With the rapid propagation of flexible electronic devices, flexible lithium-ion batteries are emerging as the most promising energy supplier among all of the energy storage devices due to high energy and power densities with good cycling stability.

“All-in-Gel” design for supercapacitors towards solid-state energy devices with thermal and mechanical compliance

2019 ◽  
Vol 7 (15) ◽  
pp. 8826-8831 ◽  
Author(s):  
Chengyao Yin ◽  
Xinhua Liu ◽  
Junjie Wei ◽  
Rui Tan ◽  
Jie Zhou ◽  
...  
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
State Energy ◽  
Step Change ◽  
Wearable Electronics ◽  
Energy Storage Devices ◽  
Composite Electrolyte ◽  
Storage Devices ◽  
Energy Devices ◽  
Mechanical Compliance

“All-in-gel” supercapacitor is designed via ionogel composite electrolyte and Bucky gel electrodes. These flexible, conductive and shape-conformable gels represent a step change in the design of safe energy storage devices for wearable electronics, in particular those facing the increased demands of hazardous operational environments.

scholarly journals Phenazine–Based Covalent Organic Framework Cathode Materials with High Energy and Power Densities

2019 ◽  
Author(s):  
Edon Vitaku ◽  
Cara Gannett ◽  
Keith Carpenter ◽  
Luxi Shen ◽  
Hector Abruna ◽  
...  
Keyword(s):  
Energy Storage ◽  
Conductive Polymer ◽  
Electrical Energy ◽  
High Energy ◽  
Energy Storage Devices ◽  
Electrical Energy Storage ◽  
Storage Devices ◽  
Redox Sites ◽  
Redox Active ◽  
Power Densities

Redox-active covalent organic frameworks (COFs) are promising materials for energy storage devices because of their high density of redox sites, permanent and controlled porosity, high surface areas, and tunable structures. However, the low electrochemical accessibility of their redox-active sites has limited COF-based devices either to thin films (<250 nm) grown on conductive substrates, or to thicker films (1 µm) when a conductive polymer is introduced into the COF pores. Electrical energy storage devices constructed from bulk microcrystalline COF powders, eliminating the need for both thin-film formation and conductive polymer guests, would offer both improved capacity and potentially scalable fabrication processes. Here we report on the synthesis and electrochemical evaluation of a new phenazine-based 2D COF (DAPH-TFP COF), as well as its composite with poly(3,4-ethylenedioxythiophene) (PEDOT). Both the COF and its PEDOT composite were evaluated as powders that were solution-cast onto bulk electrodes serving as current collectors. The unmodified DAPH-TFP COF exhibited excellent electrical access to its redox sites, even without PEDOT functionalization, and outperformed the PEDOT composite of a previously reported anthraquinone-based system. Devices containing DAPH-TFP COF were able to deliver both high energy (250 Wh/kg) and power densities (2950 W/kg), validating the promise of unmodified redox-active COFs that are easily incorporated into electrical energy storage devices.

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