Dispersant Molecules with Functional Catechol Groups for Supercapacitor Fabrication

Cathodes for supercapacitors with enhanced capacitive performance are prepared using MnO2 as a charge storage material and carbon nanotubes (CNT) as conductive additives. The enhanced capacitive properties are linked to the beneficial effects of catecholate molecules, such as chlorogenic acid and 3,4,5-trihydroxybenzamide, which are used as co-dispersants for MnO2 and CNT. The dispersant interactions with MnO2 and CNT are discussed in relation to the chemical structures of the dispersant molecules and their biomimetic adsorption mechanisms. The dispersant adsorption is a key factor for efficient co-dispersion in ethanol, which facilitated enhanced mixing of the nanostructured components and allowed for improved utilization of charge storage properties of the electrode materials with high active mass of 40 mg cm−2. Structural peculiarities of the dispersant molecules are discussed, which facilitate dispersion and charging. Capacitive properties are analyzed using cyclic voltammetry, chronopotentiometry and impedance spectroscopy. A capacitance of 6.5 F cm−2 is achieved at a low electrical resistance. The advanced capacitive properties of the electrodes are linked to the microstructures of the electrodes prepared in the presence of the dispersants.

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Two-fold interpenetrated Mn-based metal–organic frameworks (MOFs) as battery-type electrode materials for charge storage

Dalton Transactions ◽

10.1039/c9dt04101j ◽

2020 ◽

Vol 49 (2) ◽

pp. 411-417 ◽

Cited By ~ 40

Author(s):

Kuaibing Wang ◽

Bo Lv ◽

Zikai Wang ◽

Hua Wu ◽

Jiangyan Xu ◽

...

Keyword(s):

Electrode Materials ◽

Metal Organic Frameworks ◽

Charge Storage ◽

Alkaline Batteries ◽

Metal Organic ◽

A Charge ◽

First Time

Two novel interpenetrated 2-fold Mn-MOFs were successfully prepared and applied for the first time in a charge-storage field. As a result, the bulk electrodes behave as alkaline batteries and deliver high capacities of 1004 and 619 C g−1 at 1 A g−1.

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Method, apparatus, and communication device for charging a charge storage device which is momentarily connected to a fixed load

Journal of Power Sources ◽

10.1016/s0378-7753(97)84095-5 ◽

1998 ◽

Vol 70 (1) ◽

pp. 158-159

Author(s):

B Eastmond

Keyword(s):

Storage Device ◽

Charge Storage ◽

Communication Device ◽

Fixed Load ◽

A Charge ◽

Charge Storage Device

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The Dose of Somatostatin Analogues during Pre-Surgical Treatment Is a Key Factor to Achieve Surgical Remission in Acromegaly

Endocrines ◽

10.3390/endocrines2030023 ◽

2021 ◽

Vol 2 (3) ◽

pp. 241-250

Author(s):

Marta Araujo-Castro ◽

Eider Pascual-Corrales ◽

Héctor Pian ◽

Ignacio Ruz-Caracuel ◽

Alberto Acitores Cancela ◽

...

Keyword(s):

Retrospective Study ◽

Surgical Treatment ◽

Surgical Outcomes ◽

Pituitary Adenomas ◽

Somatostatin Analogues ◽

Beneficial Effects ◽

Key Factor ◽

Long Acting ◽

First Time ◽

Endocrine Complications

Purpose: to determine whether pre-surgical treatment using long-acting somatostatin analogues (SSAs) may improve surgical outcomes in acromegaly. Methods: retrospective study of 48 patients with acromegaly operated by endoscopic transsphenoidal approach and for first time. Surgical remission was evaluated based on the 2010 criteria. Results: most patients, 83.3% (n = 40), harbored macroadenomas and 31.3% (n = 15) invasive pituitary adenomas. In this case, 14 patients were treated with lanreotide LAR and 6 with octreotide LAR, median monthly doses of 97.5 [range 60–120] and 20 [range 20–30] mg, respectively, for at least 3 months preoperatively. Presurgical variables were comparable between pre-treated and untreated patients (p > 0.05). Surgical remission was more frequent in those pre-treated with monthly doses ≥90 mg of lanreotide or ≥30 mg of octreotide than in untreated or pre-treated with lower doses (OR = 4.64, p = 0.025). However, no differences were found between pre-treated and untreated patients when lower doses were included or between those treated for longer than 6 months compared to those untreated or pre-treated for shorter than 6 months. Similarly, no differences were found either in terms of surgical or endocrine complications (OR = 0.65, p = 0.570), independently of the doses and the duration of SSA treatment (p > 0.05). Conclusions: the dose of SSAs is a key factor during pre-surgical treatment, since the beneficial effects in surgical remission were observed with monthly doses equal or higher than 90 mg of lanreotide and 30 mg of octreotide, but not with lower doses.

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Effect of Structural Ordering on the Charge Storage Mechanism of p-Type Organic Electrode Materials

ACS Applied Materials & Interfaces ◽

10.1021/acsami.0c19622 ◽

2021 ◽

Vol 13 (6) ◽

pp. 7135-7141 ◽

Cited By ~ 2

Author(s):

Brian M. Peterson ◽

Cara N. Gannett ◽

Luis Melecio-Zambrano ◽

Brett P. Fors ◽

Héctor Abruña

Keyword(s):

Electrode Materials ◽

Charge Storage ◽

Structural Ordering ◽

Storage Mechanism ◽

Organic Electrode ◽

Charge Storage Mechanism ◽

P Type

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Electrochemistry of end-capped oligothienyls. New insights into the polymerization mechanism and the charge storage, conduction and capacitive properties of polythiophene

Synthetic Metals ◽

10.1016/0379-6779(93)91202-d ◽

1993 ◽

Vol 61 (1-2) ◽

pp. 81-87 ◽

Cited By ~ 34

Author(s):

G. Zotti ◽

G. Schiavon ◽

A. Berlin ◽

G. Pagani

Keyword(s):

Charge Storage ◽

Polymerization Mechanism ◽

Capacitive Properties

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A star polymer with a metallo-phthalocyanine core as a tunable charge storage material for nonvolatile transistor memory devices

Journal of Materials Chemistry C ◽

10.1039/c7tc05790c ◽

2018 ◽

Vol 6 (11) ◽

pp. 2724-2732 ◽

Cited By ~ 16

Author(s):

Junko Aimi ◽

Po-Hung Wang ◽

Chien-Chung Shih ◽

Chih-Feng Huang ◽

Takashi Nakanishi ◽

...

Keyword(s):

Memory Device ◽

Star Polymer ◽

Charge Storage ◽

Device Performance ◽

Memory Devices ◽

Storage Material ◽

Novel Strategy ◽

A Charge

A novel strategy to control the OFET memory device performance has been demonstrated using a metallophthalocyanine-cored star-shaped polystyrene as a charge storage material.

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Stretchable batteries with gradient multilayer conductors

Science Advances ◽

10.1126/sciadv.aaw1879 ◽

2019 ◽

Vol 5 (7) ◽

pp. eaaw1879 ◽

Cited By ~ 31

Author(s):

Minsu Gu ◽

Woo-Jin Song ◽

Jaehyung Hong ◽

Sung Youb Kim ◽

Tae Joo Shin ◽

...

Keyword(s):

Self Assembly ◽

Multiple Scales ◽

Discharge Rate ◽

Rate Capability ◽

Lithium Ion ◽

Charge Storage ◽

Storage Devices ◽

Essential Components ◽

Stretchable Conductors ◽

A Charge

Stretchable conductors are essential components in next-generation deformable and wearable electronic devices. The ability of stretchable conductors to achieve sufficient electrical conductivity, however, remains limited under high strain, which is particularly detrimental for charge storage devices. In this study, we present stretchable conductors made from multiple layers of gradient assembled polyurethane (GAP) comprising gold nanoparticles capable of self-assembly under strain. Stratified layering affords control over the composite internal architecture at multiple scales, leading to metallic conductivity in both the lateral and transversal directions under strains of as high as 300%. The unique combination of the electrical and mechanical properties of GAP electrodes enables the development of a stretchable lithium-ion battery with a charge-discharge rate capability of 100 mAh g−1 at a current density of 0.5 A g−1 and remarkable cycle retention of 96% after 1000 cycles. The hierarchical GAP nanocomposites afford rapid fabrication of advanced charge storage devices.

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Enhanced charge storage of nanometric ζ-V2O5 in Mg electrolytes

Nanoscale ◽

10.1039/d0nr05060a ◽

2020 ◽

Vol 12 (43) ◽

pp. 22150-22160

Author(s):

Ian D. Johnson ◽

Gene Nolis ◽

Liang Yin ◽

Hyun Deog Yoo ◽

Prakash Parajuli ◽

...

Keyword(s):

Electrode Materials ◽

Limiting Factors ◽

Charge Storage ◽

Oxide Electrode

Nanometric ζ-V2O5 displayes an enhanced ability to reversibly store Mg2+, yielding a better understanding of kinetic limiting factors in reversible magnesiation reactions of oxide electrode materials.

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