scholarly journals A Ferric-Air Battery base on Solid Oxide Fuel Cell for Electrical Energy Storage

2013 ◽  
Vol 16 (4) ◽  
pp. 257-262 ◽  
Author(s):  
Ting Luo ◽  
Shaorong Wang ◽  
Le Shao ◽  
Jiqing Qian ◽  
Xiaofeng Ye ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrical Energy ◽  
Solid Oxide ◽  
Active Materials ◽  
Electrical Energy Storage ◽  
Redox Active ◽  
Air Battery ◽  
Solid Oxide Cell ◽  
Excellent Stability

We report a ferric-air, solid oxide battery that consists of a tubular solid oxide cell with Ca(OH)2/CaO dispersed Fe/FeOx powders integrated as the redox-active materials in the fuel chamber. The key feature here is the use of Ca(OH)2 to prevent agglomeration and coarsening of Fe/FeOx powders, and more importantly to enable in situ production of H2/H2O as the electrochemical active redox couple in the fuel electrode. The proof-of-concept solid oxide battery exhibits an energy capacity of 144 Wh kg-1-Fe at a ferric utilization of 18.8% and excellent stability in ten discharge/charge cycles with a voltage efficiency of 83% that have great potential for improvement. These results showed encouraging promise of the ferric-air, solid oxide batteries for electrical energy storage applications.

High efficiency electrical energy storage using a methane–oxygen solid oxide cell

2011 ◽  
Vol 4 (3) ◽  
pp. 944-951 ◽  
Author(s):  
David M. Bierschenk ◽  
James R. Wilson ◽  
Scott A. Barnett
Keyword(s):  
Energy Storage ◽  
High Efficiency ◽  
Electrical Energy ◽  
Solid Oxide ◽  
Electrical Energy Storage ◽  
Solid Oxide Cell

scholarly journals Hydroquinone–pyrrole dyads with varied linkers

2016 ◽  
Vol 12 ◽  
pp. 89-96 ◽  
Author(s):  
Hao Huang ◽  
Christoffer Karlsson ◽  
Maria Strømme ◽  
Martin Sjödin ◽  
Adolf Gogoll
Keyword(s):  
Dft Calculations ◽  
Electrical Energy ◽  
Energy Storage Devices ◽  
Active Materials ◽  
Electrical Energy Storage ◽  
Storage Devices ◽  
H Nmr ◽  
Redox Active ◽  
Homo Lumo ◽  
C Nmr

A series of pyrroles functionalized in the 3-position with p-dimethoxybenzene via various linkers (CH2, CH2CH2, CH=CH, C≡C) has been synthesized. Their electronic properties have been deduced from 1H NMR, 13C NMR, and UV–vis spectra to detect possible interactions between the two aromatic subunits. The extent of conjugation between the subunits is largely controlled by the nature of the linker, with the largest conjugation found with the trans-ethene linker and the weakest with the aliphatic linkers. DFT calculations revealed substantial changes in the HOMO–LUMO gap that correlated with the extent of conjugation found experimentally. The results of this work are expected to open up for use of the investigated compounds as components of redox-active materials in sustainable, organic electrical energy storage devices.

Operating Conditions and System Considerations for a Reversible Solid Oxide Cell System for Electrical Energy Storage

2014 ◽  
Author(s):  
Christopher H. Wendel ◽  
Pejman Kazempoor ◽  
Robert J. Braun
Keyword(s):  
Energy Storage ◽  
Thermal Management ◽  
Management Strategies ◽  
Electrical Energy ◽  
Cell System ◽  
Operating Conditions ◽  
Solid Oxide ◽  
System Level ◽  
Widespread Application ◽  
Electrical Energy Storage

Electrical energy storage (EES) is an important component of the future electric grid. Given that no other widely available technology meets all the EES requirements, reversible (or regenerative) solid oxide cells (ReSOCs) working in both fuel cell (power producing) and electrolysis (fuel producing) modes are envisioned as a technology capable of providing highly efficient and cost-effective EES. However, there are still many challenges from cell materials development to system level operation of ReSOCs that should be addressed before widespread application. One particular challenge of this novel system is establishing effective thermal management strategies to maintain the high conversion efficiency of the ReSOC. The system presented in this paper employs a thermal management strategy of promoting exothermic methanation in the ReSOC stack to offset the endothermic electrolysis reactions during charging mode (fuel producing) while also enhancing the energy density of the stored gases. Modeling and parametric analysis of an energy storage concept is performed using a thermodynamic system model coupled with a physically based ReSOC stack model. Results indicate that roundtrip efficiencies greater than 70% can be achieved at intermediate stack temperature (∼680°C) and pressure (∼20 bar). The optimal operating conditions result from a tradeoff between high stack efficiency and high parasitic balance of plant power.

scholarly journals Phenazine–Based Covalent Organic Framework Cathode Materials with High Energy and Power Densities

2019 ◽  
Author(s):  
Edon Vitaku ◽  
Cara Gannett ◽  
Keith Carpenter ◽  
Luxi Shen ◽  
Hector Abruna ◽  
...  
Keyword(s):  
Energy Storage ◽  
Conductive Polymer ◽  
Electrical Energy ◽  
High Energy ◽  
Energy Storage Devices ◽  
Electrical Energy Storage ◽  
Storage Devices ◽  
Redox Sites ◽  
Redox Active ◽  
Power Densities

Redox-active covalent organic frameworks (COFs) are promising materials for energy storage devices because of their high density of redox sites, permanent and controlled porosity, high surface areas, and tunable structures. However, the low electrochemical accessibility of their redox-active sites has limited COF-based devices either to thin films (<250 nm) grown on conductive substrates, or to thicker films (1 µm) when a conductive polymer is introduced into the COF pores. Electrical energy storage devices constructed from bulk microcrystalline COF powders, eliminating the need for both thin-film formation and conductive polymer guests, would offer both improved capacity and potentially scalable fabrication processes. Here we report on the synthesis and electrochemical evaluation of a new phenazine-based 2D COF (DAPH-TFP COF), as well as its composite with poly(3,4-ethylenedioxythiophene) (PEDOT). Both the COF and its PEDOT composite were evaluated as powders that were solution-cast onto bulk electrodes serving as current collectors. The unmodified DAPH-TFP COF exhibited excellent electrical access to its redox sites, even without PEDOT functionalization, and outperformed the PEDOT composite of a previously reported anthraquinone-based system. Devices containing DAPH-TFP COF were able to deliver both high energy (250 Wh/kg) and power densities (2950 W/kg), validating the promise of unmodified redox-active COFs that are easily incorporated into electrical energy storage devices.

scholarly journals Redox-Active Zinc Thiolates for Low-Cost Rechargeable Aqueous Zn-ion Batteries

2021 ◽  
Author(s):  
Madison R Tuttle ◽  
Christopher Walter ◽  
Emma Brackman ◽  
Curtis Moore ◽  
Matthew Espe ◽  
...  
Keyword(s):  
Energy Storage ◽  
Large Scale ◽  
Low Cost ◽  
Electrical Energy ◽  
Zinc Ion ◽  
Electrical Energy Storage ◽  
Redox Active ◽  
Further Development

Aqueous zinc-ion batteries (AZIBs) are promising candidates for large-scale electrical energy storage due to the inexpensive, safe, and non-toxic nature of zinc. One key area that requires further development is...

Sign in / Sign up

Export Citation Format

Share Document