Unimpeded migration of ions in carbon electrodes with bimodal pores at an ultralow temperature of −100 °C

2019 ◽  
Vol 7 (27) ◽  
pp. 16339-16346 ◽  
Author(s):  
Xi Wang ◽  
Jiang Xu ◽  
Joselito M. Razal ◽  
Ningyi Yuan ◽  
Xiaoshuang Zhou ◽  
...  

The ability to rapidly charge (and discharge) energy storage devices at extremely low temperature (down to −100 °C) is critical for low-temperature applications such as high altitude exploration and space missions.

2020 ◽  
Vol 13 (10) ◽  
pp. 3527-3535 ◽  
Author(s):  
Nana Chang ◽  
Tianyu Li ◽  
Rui Li ◽  
Shengnan Wang ◽  
Yanbin Yin ◽  
...  

A frigostable aqueous hybrid electrolyte enabled by the solvation interaction of Zn2+–EG is proposed for low-temperature zinc-based energy storage devices.


2019 ◽  
Vol 139 ◽  
pp. 131-144 ◽  
Author(s):  
Jesús Muñiz ◽  
Néstor David Espinosa-Torres ◽  
Alfredo Guillén-López ◽  
Adriana Longoria ◽  
Ana Karina Cuentas-Gallegos ◽  
...  

2019 ◽  
Vol 7 (1) ◽  
pp. 191-201 ◽  
Author(s):  
Jianglin Ye ◽  
Patrice Simon ◽  
Yanwu Zhu

Abstract Tremendous efforts have been dedicated to developing high-performance energy storage devices based on the micro- or nano-manipulation of novel carbon electrodes, as certain nanocarbons are perceived to have advantages such as high specific surface areas, superior electric conductivities, excellent mechanical properties and so on. In typical electrochemical electrodes, ions are intercalated/deintercalated into/from the bulk (for batteries) or adsorbed/desorbed on/from the surface (for electrochemical capacitors). Fast ionic transport, significantly determined by ionic channels in active electrodes or supporting materials, is a prerequisite for the efficient energy storage with carbons. In this report, we summarize recent design strategies for ionic channels in novel carbons and give comments on the promising features based on those carbons towards tailorable ionic channels.


2019 ◽  
Vol 11 (46) ◽  
pp. 43608-43621 ◽  
Author(s):  
Mohd Zahid Ansari ◽  
Dip K. Nandi ◽  
Petr Janicek ◽  
Sajid Ali Ansari ◽  
Rahul Ramesh ◽  
...  

2015 ◽  
Vol 39 (8) ◽  
pp. 6108-6116 ◽  
Author(s):  
John Candler ◽  
Tyler Elmore ◽  
Bipin Kumar Gupta ◽  
Lifeng Dong ◽  
Soubantika Palchoudhury ◽  
...  

The next generation of flexible energy storage devices based on CoMoO4 for high-temperature applications were fabricated and tested.


Crystals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 115
Author(s):  
Xiaoli Wang ◽  
Yin Wang ◽  
Xinyu Zhao

The development of superior electrochemical energy-storage devices designed through a facile, cost-efficient, and green synthesis technique is the key to addressing the intermittent nature of renewable energy sources such as solar and wind energy. In our present work, we design a simple, surfactant-free, and low-temperature chemical strategy to prepare novel integrated, MnO2 composite electrodes with two-dimensional (2D) nanosheet film directly supported on three-dimensional (3D) conductive nickel foam. Benefiting from the specific 2D nanosheet architecture to provide a large interfacial contact area and highly conductive metal scaffolds to facilitate fast electron transfer, the novel nanosheet-assembled MnO2-integrated electrodes exhibit higher specific capacitance of 446 F g−1 at the current density of 1 A g−1 compared with nanostructured MnO2 and commercial MnO2 powder electrodes. More importantly, the as-synthesized devices are able to achieve an outstanding cycling performance of 95% retention after 3000 cycles. The present work, which is based on the low-temperature chemical route to deposit active materials on the conductive substrate, provides new insights into designing a binder-free supercapacitor system to improve the specific capacitance, cycling, and rate performance as next-generation, energy-storage devices.


2020 ◽  
Author(s):  
Yamin Zhang ◽  
Zhongpu Wang ◽  
Deping Li ◽  
Qing Sun ◽  
Kangrong Lai ◽  
...  

<p></p><p>Porous carbon has attracted extensive attentions as the electrode material for various energy storage devices considering its advantages like high theoretical capacitance/capacity, high conductivity, low cost and earth abundant inherence. However, there still exists some disadvantages limiting its further applications, such as the tedious fabrication process, limited metal-ion transport kinetics and undesired structure deformation at harsh electrochemical conditions. Herein, we report a facile strategy, with calcium gluconate firstly reported as the carbon source, to fabricate ultrathin porous carbon nanosheets. <a>The as-prepared Ca-900 electrode delivers excellent K-ion storage performance including high reversible capacity (430.7 mAh g<sup>-1</sup>), superior rate capability (154.8 mAh g<sup>-1</sup> at an ultrahigh current density of 5.0 A g<sup>-1</sup>) and ultra-stable long-term cycling stability (a high capacity retention ratio of ~81.2% after 4000 cycles at 1.0 A g<sup>-1</sup>). </a>Similarly, when being applied in Zn-ion capacitors, the Ca-900 electrode also exhibits an ultra-stable cycling performance with ~90.9% capacity retention after 4000 cycles at 1.0 A g<sup>-1</sup>, illuminating the applicable potentials. Moreover, the origin of the fast and smooth metal-ion storage is also revealed by carefully designed consecutive CV measurements. Overall, considering the facile preparation strategy, unique structure, application flexibility and in-depth mechanism investigations, this work will deepen the fundamental understandings and boost the commercialization of high-efficient energy storage devices like potassium-ion/sodium-ion batteries, zinc-ion batteries/capacitors and aluminum-ion batteries.</p><br><p></p>


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