All-solid-state disordered LiTiS2pseudocapacitor

2017 ◽  
Vol 5 (30) ◽  
pp. 15661-15668 ◽  
Author(s):  
Justin M. Whiteley ◽  
Simon Hafner ◽  
Sang Sub Han ◽  
Seul Cham Kim ◽  
Viet-Duc Le ◽  
...  
Keyword(s):  
Solid State ◽  
Liquid Electrolyte ◽  
High Rate ◽  
Charge Storage ◽  
Storage Mechanism ◽  
Charge Storage Mechanism

A lithium charge storage mechanism is discovered at the interface of nano-crystallites of LiTiS2in the solid state. The surface titanium atoms can be reduced reversibly at higher voltages. Electrochemically, this appears as a pseudocapacitive effect boosting capacity greater than theoretical at high rate with no liquid electrolyte.

Fiber-based all-solid-state asymmetric supercapacitors based on Co3O4@MnO2 core/shell nanowire arrays

2017 ◽  
Vol 5 (44) ◽  
pp. 22939-22944 ◽  
Author(s):  
Xiaoying Niu ◽  
Guoyin Zhu ◽  
Zhihui Yin ◽  
Ziyang Dai ◽  
Xiaocheng Hou ◽  
...  
Keyword(s):  
Solid State ◽  
Nanowire Array ◽  
Fabrication Process ◽  
Nanowire Arrays ◽  
Charge Storage ◽  
Core Shell ◽  
Asymmetric Supercapacitors ◽  
Storage Mechanism ◽  
Array Electrode ◽  
Charge Storage Mechanism

Schematic illustration of the fabrication process and charge storage mechanism of the hierarchical Ni wire/Co3O4@MnO2 nanowire array electrode.

scholarly journals Electrochemical study of TiO2 in aqueous AlCl3 electrolyte via vacuum impregnation for superior high-rate electrode performance

BMC Energy ◽  
2019 ◽  
Vol 1 (1) ◽  
Author(s):  
A. W. Holland ◽  
A. Cruden ◽  
A. Zerey ◽  
A. Hector ◽  
R. G. A. Wills
Keyword(s):  
High Rate ◽  
Vacuum Impregnation ◽  
Charge Storage ◽  
Rate Performance ◽  
Copper Hexacyanoferrate ◽  
Electrode Performance ◽  
Storage Mechanism ◽  
Impregnation Technique ◽  
Charge Storage Mechanism ◽  
High Rate Performance

AbstractThis communication elucidates the charge storage mechanism of a TiO2 electrode in 1 mol dm− 3 AlCl3 for use in aqueous-ion batteries. Cyclic voltammetry studies suggest a surface contribution to charge storage and that cycle life can be improved by limiting the potential ≥ − 1.0 V vs SCE. In order to enhance this surface contribution, a simple vacuum impregnation technique was employed to improve electrode-electrolyte contact. This resulted in a significant improvement in the high rate performance of TiO2, where a capacity of 15 mA h g− 1 was maintained at the very high specific current of 40 A g− 1, a decrease of only 25% from when the electrode was cycled at 1 A g− 1. The vacuum impregnation process was also applied to copper-hexacyanoferrate, envisaged as a possible positive electrode, again resulting in significant improvements to high-rate performance. This demonstrates the potential for using this simple technique for improving electrode performance in other aqueous electrolyte battery systems.

Exceptional interfacial electrochemistry of few-layered 2D MoS2 quantum sheets for high performance flexible solid-state supercapacitors

2020 ◽  
Vol 8 (26) ◽  
pp. 13121-13131 ◽  
Author(s):  
Swapnil Shital Nardekar ◽  
Karthikeyan Krishnamoorthy ◽  
Parthiban Pazhamalai ◽  
Surjit Sahoo ◽  
Vimal Kumar Mariappan ◽  
...  
Keyword(s):  
Solid State ◽  
Electrode Material ◽  
High Performance ◽  
Charge Storage ◽  
Storage Mechanism ◽  
Interfacial Electrochemistry ◽  
Hidden Knowledge ◽  
Charge Storage Mechanism

Extracting the hidden knowledge behind the exception charge storage mechanism involved in the MoS2 quantum sheets electrode material.

scholarly journals Construction of 1D conductive Ni-MOF nanorods with fast Li+ kinetic diffusion and stable high-rate capacities as an anode for lithium ion batteries

2019 ◽  
Vol 1 (12) ◽  
pp. 4688-4691 ◽  
Author(s):  
Lingzhi Guo ◽  
Jinfeng Sun ◽  
Xuan Sun ◽  
Jinyang Zhang ◽  
Linrui Hou ◽  
...  
Keyword(s):  
Diffusion Coefficient ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
High Rate ◽  
Charge Storage ◽  
Lithium Storage ◽  
Storage Mechanism ◽  
Charge Storage Mechanism ◽  
Kinetic Diffusion ◽  
Storage Properties

1D conductive Ni-CAT nanorods with a superb Li+ diffusion coefficient and electronic conductivity exhibited remarkable electrochemical lithium storage properties, and the charge-storage mechanism involved was rationally put forward.

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

2021 ◽  
Vol 13 (6) ◽  
pp. 7135-7141 ◽  
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

Unraveling the different charge storage mechanism in T and H phases of MoS2

2016 ◽  
Vol 217 ◽  
pp. 1-8 ◽  
Author(s):  
Bao Zhang ◽  
Xiao Ji ◽  
Kui Xu ◽  
Chi Chen ◽  
Xiong Xiong ◽  
...  
Keyword(s):  
Charge Storage ◽  
Storage Mechanism ◽  
Charge Storage Mechanism

Understanding and Calibration of Charge Storage Mechanism in Cyclic Voltammetry Curves

2021 ◽  
Author(s):  
Xiangjun Pu ◽  
Dong Zhao ◽  
Chenglong Fu ◽  
Zhongxue Chen ◽  
Shunan Cao ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
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>

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