In-Situ Embedding of Cobaltous Sulfide Quantum Dots among Transition Metal Layered Double Hydroxide for High Performance All-Solid-State Asymmetric Supercapacitors

2021 ◽  
Author(s):  
Zhiqiang Liu ◽  
Yanling Qiu ◽  
Aitang Zhang ◽  
Wenrong Yang ◽  
Colin J. Barrow ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solid State ◽  
Active Sites ◽  
High Performance ◽  
Metal Species ◽  
Asymmetric Supercapacitors ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
In Situ Embedding

Layered double hydroxides (LDHs) are widely used as cathode materials for supercapacitors (SCs) thanks to their many advantages. However, the single metal species with limited active sites limit the further...

In situ formation of a renewable cellulose hydrogel electrolyte for high-performance flexible all-solid-state asymmetric supercapacitors

2019 ◽  
Vol 3 (11) ◽  
pp. 3109-3115 ◽  
Author(s):  
Hongfei Wang ◽  
Juan Wu ◽  
Jun Qiu ◽  
Kefu Zhang ◽  
Jingwen Shao ◽  
...  
Keyword(s):  
Solid State ◽  
High Performance ◽  
Asymmetric Supercapacitors ◽  
Cellulose Hydrogel ◽  
In Situ Formation

Renewable cellulose hydrogels have been fabricated as the electrolyte for high-performance flexible all-solid-state asymmetric supercapacitors.

scholarly journals Polymer/Iron-Based Layered Double Hydroxides as Multifunctional Wound Dressings

Pharmaceutics ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 1130
Author(s):  
Mariana Pires Figueiredo ◽  
Ana Borrego-Sánchez ◽  
Fátima García-Villén ◽  
Dalila Miele ◽  
Silvia Rossi ◽  
...  
Keyword(s):  
Drug Release ◽  
High Performance ◽  
Mechanical Performance ◽  
Release Kinetics ◽  
Wound Dressings ◽  
In Vitro Drug Release ◽  
Improved Performance ◽  
Double Hydroxide ◽  
Double Hydroxides

This work presents the development of multifunctional therapeutic membranes based on a high-performance block copolymer scaffold formed by polyether (PE) and polyamide (PA) units (known as PEBA) and layered double hydroxide (LDH) biomaterials, with the aim to study their uses as wound dressings. Two LDH layer compositions were employed containing Mg2+ or Zn2+, Fe3+ and Al3+ cations, intercalated with chloride anions, abbreviated as Mg-Cl or Zn-Cl, or intercalated with naproxenate (NAP) anions, abbreviated as Mg-NAP or Zn-NAP. Membranes were structurally and physically characterized, and the in vitro drug release kinetics and cytotoxicity assessed. PEBA-loading NaNAP salt particles were also prepared for comparison. Intercalated NAP anions improved LDH–polymer interaction, resulting in membranes with greater mechanical performance compared to the polymer only or to the membranes containing the Cl-LDHs. Drug release (in saline solution) was sustained for at least 8 h for all samples and release kinetics could be modulated: a slower, an intermediate and a faster NAP release were observed from membranes containing Zn-NAP, NaNAP and Mg-NAP particles, respectively. In general, cell viability was higher in the presence of Mg-LDH and the membranes presented improved performance in comparison with the powdered samples. PEBA containing Mg-NAP sample stood out among all membranes in all the evaluated aspects, thus being considered a great candidate for application as multifunctional therapeutic dressings.

Vacancies-engineered MoO3 and Na+-preinserted MnO2 in-situ grown N-doped graphene nanotubes as electrode materials for high-performance asymmetric supercapacitor

2021 ◽  
Author(s):  
Jian Zhao ◽  
He Cheng ◽  
Huanyu Li ◽  
Yan-Jie Wang ◽  
Qingyan Jiang ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
High Energy ◽  
Cooperative Effect ◽  
Electrochemical Energy Storage ◽  
Asymmetric Supercapacitor ◽  
Asymmetric Supercapacitors ◽  
Doped Graphene ◽  
Power Densities

Developing advanced negative and positive electrode materials for asymmetric supercapacitors (ASCs) as the electrochemical energy storage can enable the device to reach high energy/power densities resulting from the cooperative effect...

High-Performance Flexible Solid-State Supercapacitor with an Extended Nanoregime Interface through in Situ Polymer Electrolyte Generation

2016 ◽  
Vol 8 (2) ◽  
pp. 1233-1241 ◽  
Author(s):  
Bihag Anothumakkool ◽  
Arun Torris A. T. ◽  
Sajna Veeliyath ◽  
Vidyanand Vijayakumar ◽  
Manohar V. Badiger ◽  
...  
Keyword(s):  
Solid State ◽  
Polymer Electrolyte ◽  
High Performance
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