A proton-hopping charge storage mechanism of ionic one-dimensional coordination polymers for high-performance supercapacitors

2017 ◽  
Vol 53 (86) ◽  
pp. 11786-11789 ◽  
Author(s):  
Nutthaphon Phattharasupakun ◽  
Juthaporn Wutthiprom ◽  
Surasak Kaenket ◽  
Thana Maihom ◽  
Jumras Limtrakul ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Coordination Polymers ◽  
High Performance ◽  
Charge Storage ◽  
Aqueous Electrolytes ◽  
Proton Conducting ◽  
One Dimensional ◽  
Storage Mechanism ◽  
Charge Storage Mechanism

A proton-conducting coordination polymer of Zn2+ phosphate and protonated imidazole has been used as a novel supercapacitor material in aqueous electrolytes.

scholarly journals The Role of Al3+-Based Aqueous Electrolytes in the Charge Storage Mechanism of MnOx Cathodes

2020 ◽  
Author(s):  
Véronique Balland ◽  
Mickaël Mateos ◽  
Kenneth D. Harris ◽  
Benoit Limoges
Keyword(s):  
Manganese Oxide ◽  
Critical Analysis ◽  
Charge Storage ◽  
Aqueous Electrolytes ◽  
Storage Mechanism ◽  
Main Charge ◽  
Charge Storage Mechanism ◽  
The Subject

<p>Rechargeable aqueous aluminium batteries are the subject of growing interest, but the charge storage mechanisms at manganese oxide-based cathodes remain poorly understood with as many mechanisms as studies. Here, we use an original <i>in situ</i> spectroelectrochemical methodology to unambiguously demonstrate that the reversible proton-coupled MnO<sub>2</sub>-to-Mn<sup>2+</sup> conversion is the main charge storage mechanism occurring at MnO<sub>2</sub> cathodes over a range of slightly acidic Al<sup>3+</sup>-based aqueous electrolytes. In Zn/MnO<sub>2</sub> assemblies, this mechanism is associated with high gravimetric capacity and discharge potentials, up to 560 mAh·g<sup>-1</sup> and 1.76 V respectively, attractive efficiencies (<i>CE</i> > 98.5 % and <i>EE</i> > 80%) and excellent cyclability (> 750 cycles at 10 A·g<sup>-1</sup>). Finally, we conducted a critical analysis of the data previously published on MnO<sub>x</sub> cathodes in Al<sup>3+</sup>-based aqueous electrolytes to conclude on a universal charge storage mechanism, <i>i.e.</i>, the reversible electrodissolution/electrodeposition of MnO<sub>2</sub>.<i></i></p>

scholarly journals Na2.4Al0.4Mn2.6O7 anionic redox cathode material for sodium ion batteries- a combined experimental and theoretical approach to elucidate its charge storage mechanism

2022 ◽  
Author(s):  
Cindy Soares ◽  
Begoña Silvan ◽  
Yong-Seok Choi ◽  
Veronica Celorrio ◽  
Giannantonio Cibin ◽  
...  
Keyword(s):  
Cathode Material ◽  
Theoretical Approach ◽  
High Performance ◽  
Sodium Ion ◽  
Charge Storage ◽  
Sodium Ion Batteries ◽  
Storage Mechanism ◽  
Charge Storage Mechanism

Here we report the synthesis via ceramic methods of the high-performance Mn-rich Na2.4Al0.4Mn2.6O7 oxygen-redox cathode material for Na-ion batteries which we use as a testbed material to study the effects...

The Charge Storage Mechanism of MnCO 3 in Aqueous Electrolytes

2020 ◽  
Vol 5 (17) ◽  
pp. 5316-5322
Author(s):  
Vishnu Vardhan Palem ◽  
Mustapha Balarabe Idris ◽  
Thiruvenkatam Subramaniam ◽  
Devaraj Sappani
Keyword(s):  
Charge Storage ◽  
Aqueous Electrolytes ◽  
Storage Mechanism ◽  
Charge Storage Mechanism

Charge storage mechanism of MOF-derived Mn2O3 as high performance cathode of aqueous zinc-ion batteries

2021 ◽  
Vol 52 ◽  
pp. 277-283 ◽  
Author(s):  
Min Mao ◽  
Xingxing Wu ◽  
Yi Hu ◽  
Qunhui Yuan ◽  
Yan-Bing He ◽  
...  
Keyword(s):  
High Performance ◽  
Zinc Ion ◽  
Charge Storage ◽  
Storage Mechanism ◽  
Charge Storage Mechanism

Combined capacitive and electrochemical charge storage mechanism in high performance graphene-based lithium-ion batteries

2021 ◽  
pp. 100928
Author(s):  
Silvio Scaravonati ◽  
Michele Sidoli ◽  
Giacomo Magnani ◽  
Alberto Morenghi ◽  
Marcello Canova ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Lithium Ion ◽  
Charge Storage ◽  
Storage Mechanism ◽  
Charge Storage Mechanism

scholarly journals The Role of Al3+-Based Aqueous Electrolytes in the Charge Storage Mechanism of MnOx Cathodes

2020 ◽  
Author(s):  
Véronique Balland ◽  
Mickaël Mateos ◽  
Kenneth D. Harris ◽  
Benoit Limoges
Keyword(s):  
Manganese Oxide ◽  
Critical Analysis ◽  
Charge Storage ◽  
Aqueous Electrolytes ◽  
Storage Mechanism ◽  
Main Charge ◽  
Charge Storage Mechanism ◽  
The Subject

<p>Rechargeable aqueous aluminium batteries are the subject of growing interest, but the charge storage mechanisms at manganese oxide-based cathodes remain poorly understood with as many mechanisms as studies. Here, we use an original <i>in situ</i> spectroelectrochemical methodology to unambiguously demonstrate that the reversible proton-coupled MnO<sub>2</sub>-to-Mn<sup>2+</sup> conversion is the main charge storage mechanism occurring at MnO<sub>2</sub> cathodes over a range of slightly acidic Al<sup>3+</sup>-based aqueous electrolytes. In Zn/MnO<sub>2</sub> assemblies, this mechanism is associated with high gravimetric capacity and discharge potentials, up to 560 mAh·g<sup>-1</sup> and 1.76 V respectively, attractive efficiencies (<i>CE</i> > 98.5 % and <i>EE</i> > 80%) and excellent cyclability (> 750 cycles at 10 A·g<sup>-1</sup>). Finally, we conducted a critical analysis of the data previously published on MnO<sub>x</sub> cathodes in Al<sup>3+</sup>-based aqueous electrolytes to conclude on a universal charge storage mechanism, <i>i.e.</i>, the reversible electrodissolution/electrodeposition of MnO<sub>2</sub>.<i></i></p>

Charge storage mechanism and degradation of P2-type sodium transition metal oxides in aqueous electrolytes

2018 ◽  
Vol 6 (44) ◽  
pp. 22266-22276 ◽  
Author(s):  
Shelby Boyd ◽  
Rohan Dhall ◽  
James M. LeBeau ◽  
Veronica Augustyn
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Structural Changes ◽  
Charge Storage ◽  
Aqueous Electrolytes ◽  
Storage Mechanism ◽  
Charge Storage Mechanism

P2-type sodium transition metal oxides undergo water-driven structural changes that strongly affect electrochemical charge storage in aqueous electrolytes.

An Alternative Charge-Storage Mechanism for High-Performance Sodium-Ion and Potassium-Ion Anodes

2021 ◽  
pp. 915-924
Author(s):  
Yanjiao Ma ◽  
Yuan Ma ◽  
Holger Euchner ◽  
Xu Liu ◽  
Huang Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
Potassium Ion ◽  
Sodium Ion ◽  
Charge Storage ◽  
Storage Mechanism ◽  
Charge Storage Mechanism

scholarly journals Novel insights into the charge storage mechanism in pseudocapacitive vanadium nitride thick films for high-performance on-chip micro-supercapacitors

2020 ◽  
Vol 13 (3) ◽  
pp. 949-957 ◽  
Author(s):  
Kevin Robert ◽  
Didier Stiévenard ◽  
Dominique Deresmes ◽  
Camille Douard ◽  
Antonella Iadecola ◽  
...  
Keyword(s):  
High Performance ◽  
Thick Films ◽  
Vanadium Nitride ◽  
Charge Storage ◽  
Storage Mechanism ◽  
Charge Storage Mechanism ◽  
On Chip

Unveiling the charge storage mechanism of vanadium nitride to defy the limits of on-chip micro-supercapacitors.

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