scholarly journals The Rise of Flexible Zinc-Ion Hybrid Capacitors: Advances, Challenges, and Outlooks

2021 ◽  
Author(s):  
Cheng Wang ◽  
Xin Zeng ◽  
Patrick Cullen ◽  
Zengxia Pei
Keyword(s):  
Energy Density ◽  
Electronic Devices ◽  
High Energy ◽  
Zinc Ion ◽  
High Energy Density ◽  
Power Sources ◽  
Flexible Electronic ◽  
Hybrid Capacitors ◽  
Flexible Electronic Devices

The advent of flexible electronic devices has raised urgent demand for compatible flexible power sources. Zinc-ion hybrid capacitors (ZIHCs) combine the complementary advantages of zinc-ion batteries for high energy density...

Innovation and challenges in materials design for flexible rechargeable batteries: from 1D to 3D

2018 ◽  
Vol 6 (3) ◽  
pp. 735-753 ◽  
Author(s):  
Yanghua He ◽  
Bryan Matthews ◽  
Jingyun Wang ◽  
Li Song ◽  
Xiaoxia Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Electronic Devices ◽  
Materials Design ◽  
High Energy ◽  
Rechargeable Batteries ◽  
High Energy Density ◽  
Flexible Electronic ◽  
Flexible Electronic Devices

Due to the emergence of numerous flexible electronic devices, the design and fabrication of flexible rechargeable batteries with high energy density have attracted great attention.

Polyacrylonitrile derived porous carbon for zinc ion hybrid capacitors with high energy density

2021 ◽  
Author(s):  
Xiaowen Fan ◽  
Penggao Liu ◽  
Baixue Ouyang ◽  
Ruizheng Cai ◽  
Xinxin Chen ◽  
...  
Keyword(s):  
Energy Density ◽  
Porous Carbon ◽  
High Energy ◽  
Zinc Ion ◽  
High Energy Density ◽  
Hybrid Capacitors

Graphene fiber-based asymmetric micro-supercapacitors

2014 ◽  
Vol 2 (25) ◽  
pp. 9736-9743 ◽  
Author(s):  
Bingna Zheng ◽  
Tieqi Huang ◽  
Liang Kou ◽  
Xiaoli Zhao ◽  
Karthikeyan Gopalsamy ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Energy Density ◽  
Electronic Devices ◽  
Negative Electrode ◽  
High Energy ◽  
Positive Electrode ◽  
High Energy Density ◽  
Hybrid Fiber ◽  
Flexible Electronic ◽  
The Way

Fiber-based asymmetric micro-supercapacitor (F-asym-mSC) is assembled by core–sheath graphene fiber decorated by MnO2as the positive electrode and graphene-carbon nanotubes hybrid fiber as the negative electrode. The F-asym-mSC shows the highest energy density (11.9 μWh cm−2) for fiber-based supercapacitors and paves the way to high energy density, wearable, and flexible electronic devices.

Review on challenges of direct liquid fuel cells for portable application

2015 ◽  
Vol 12 (6) ◽  
pp. 591-606 ◽  
Author(s):  
Venkateswarlu Velisala ◽  
G. Naga Srinivasulu ◽  
B. Srinivasa Reddy ◽  
K. Venkata Koteswara Rao
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Energy Density ◽  
Liquid Fuel ◽  
Electronic Devices ◽  
High Energy ◽  
Pem Fuel Cells ◽  
Green Energy ◽  
High Energy Density ◽  
Power Sources

Fuel cells technologies are the most promising green energy technologies for diverse applications. One of the fastest growing areas is the portable electronic applications where the power range is the order of 1–100 W. For most of the portable electronic devices, rechargeable battery is the major energy source. Due to limitations like limited capacity, requirement of external power for recharge have led many researchers to look for alternative power sources to power portable electronic devices. The high energy density of fuel cells makes them very attractive alternative to batteries for portable power applications. There are a variety of fuel cell technologies being considered to replace batteries in portable electronic equipment. Direct Liquid Fuel Cells (DLFCs) have attracted much attention due to their potential applications as a power source for portable electronic devices. The advantages of DLFCs over hydrogen fed PEM fuel cells include a higher theoretical energy density and efficiency, a more convenient handling of the streams, and enhanced safety. Unlike batteries, fuel cells need not be recharged, merely refueled. This paper provides an overview on challenges of DLFCs (Direct Liquid Fuel Cells), like fuel crossover, cost, durability, water management, weight and size along with approaches being investigated to solve these challenges. Portable Fuel Cell Commercialization Targets for future and producers of portable fuel cells across the globe are also discussed in this paper.

A High-Performance Free-Standing Zn Anode for Flexible Zinc-Ion Batteries

Nanoscale ◽  
2021 ◽  
Author(s):  
Chenxi Gao ◽  
Jiawei Wang ◽  
Yuan Huang ◽  
Zixuan Li ◽  
Jiyan Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Low Cost ◽  
High Energy ◽  
Zinc Ion ◽  
High Energy Density ◽  
Free Standing ◽  
Energy Device ◽  
Zn Anode ◽  
Significant Attention

Zinc-ion batteries (ZIBs) have attracted significant attention owing to their high safety, high energy density, and low cost. ZIBs have been studied as a potential energy device for portable and...

Highly Oriented Graphene Sponge Electrode for Ultra High Energy Density Lithium Ion Hybrid Capacitors

2016 ◽  
Vol 8 (38) ◽  
pp. 25297-25305 ◽  
Author(s):  
Wook Ahn ◽  
Dong Un Lee ◽  
Ge Li ◽  
Kun Feng ◽  
Xiaolei Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Ultra High Energy ◽  
Graphene Sponge ◽  
Hybrid Capacitors

Suppressing Manganese Dissolution in Potassium Manganate with Rich Oxygen Defects Engaged High‐Energy‐Density and Durable Aqueous Zinc‐Ion Battery

2019 ◽  
Vol 29 (15) ◽  
pp. 1808375 ◽  
Author(s):  
Guozhao Fang ◽  
Chuyu Zhu ◽  
Minghui Chen ◽  
Jiang Zhou ◽  
Boya Tang ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
Zinc Ion ◽  
High Energy Density ◽  
Oxygen Defects

Core–Shell Structured NiCo2O4@ZnCo2O4 Nanomaterials with High Energy Density for Hybrid Capacitors

2021 ◽  
Vol 16 (7) ◽  
pp. 1134-1142
Author(s):  
Wenduo Yang ◽  
Jun Xiang ◽  
Sroeurb Loy ◽  
Nan Bu ◽  
Duo Cui ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrode Material ◽  
Composite Electrode ◽  
Electrode Materials ◽  
Structural Characteristics ◽  
High Energy ◽  
High Energy Density ◽  
Core Shell ◽  
Shell Composite ◽  
Hybrid Capacitors

NiCo2O4 as an electrode material for supercapacitors (SCs) has been studied by a host of researchers due to its unique structural characteristics and high capacitance. However, its performance has not yet reached the level of practical applications.it is an effective strategy to synthesize composite electrode materials for tackling the problem. Herein, NiCo2O4@ZnCo2O4 as a novel core–shell composite electrode material has been fabricated through a two-step simple hydrothermal method. The as-prepared sample can be directly used as cathode material of a supercapacitor, and its specific capacitance is 463.1 C/g at 1 A/g. An assembled capacitor has an energy density of 77 Wh·kg−1 at 2700 W·kg−1, and after 8000 cycles, 88% of the initial capacity remains.

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