Hydrogen Bonding Reinforced Hydrogel Electrolyte for Flexible, Robust and All-In-One Supercapacitor with Excellent Low-Temperature Tolerance

ACS Applied Materials & Interfaces
Huimin YuJun Ma

Abstract

Flexible supercapacitors are promising energy storage devices for emerging wearable electronics. However, due to the poor mechanical strength, complicated device manufacturing process and unsatisfactory low-temperature tolerance, their overall performance for practical applications is hindered. Herein we report a hydrogen bonding-reinforced, dual-crosslinked poly (vinyl alcohol), acrylic acid and H2SO4 (PVA-AA-S) hydrogel electrolyte for all-in-one flexible supercapacitors. The PVA-AA-S hydrogel demonstrates excellent compressive/tensile properties and high ionic conductivity. It tolerates a compressive stress of 0.53 MPa and is stretchable up to 500%. The PVA-AA-S hydrogel-based all-in-one supercapacitor shows promising electrochemical performance under various harsh conditions. The device energy density and power density reach up to 14.2 µWh cm-2 and 0.94 mW cm-2, respectively. Furthermore, it retains nearly 80% capacitance after being stored at -35 ℃ for 23 days. The excellent performance of the hydrogel electrolyte originates from its abundant strong hydrogen bonding between the polymer chains and water molecules.

References

Mar 15, 2014·Science·Patrice SimonBruce Dunn
Jun 11, 2014·Advanced Materials·Xianfu WangGuozhen Shen
Jun 9, 2015·Chemical Society Reviews·Cheng ZhongJiujun Zhang
Nov 6, 2015·Advanced Materials·Volkan YesilyurtDaniel G Anderson
May 27, 2016·Nature Communications·Xu PengYi Xie
Sep 8, 2016·Nature Communications·Maria R LukatskayaYury Gogotsi
Mar 16, 2017·Advanced Materials·Hong ChenJie Zheng
Apr 20, 2017·ACS Applied Materials & Interfaces·Feng TaoQinmin Pan
Nov 23, 2019·Science·Ekaterina PomerantsevaYury Gogotsi

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.