Analysis of Li-Air Battery: Voltage Loss due to Insoluble Discharge Formation

2015 ◽  
Author(s):  
Hao Yuan ◽  
Yun Wang
Keyword(s):  
Experimental Data ◽  
Pore Structure ◽  
Battery Voltage ◽  
Air Cathode ◽  
Voltage Loss ◽  
Air Battery ◽  
Electrode Passivation ◽  
Discharge Formation

In this paper, we present analysis of air cathode performance, taking into account both electrode passivation and transport resistance raised by insoluble products. Both effects are theoretically evaluated and compared. Validation is carried out against experimental data under low currents. The effects of electrode pore structure, such as porosity and tortuosity, on both the influence of insoluble precipitates and discharge capability are investigated.

Multi-Dimensional Modeling of Lithium-Air Batteries

2013 ◽  
Author(s):  
Yun Wang ◽  
Sung Chan Cho
Keyword(s):  
High Performance ◽  
Electrochemical Reaction ◽  
High Current Density ◽  
Pore Space ◽  
Uniform Distributions ◽  
Dimensional Modeling ◽  
Voltage Loss ◽  
Air Battery ◽  
Electrode Passivation ◽  
Lithium Air Batteries

In this study, we develop a multi-dimensional model of lithium-air (Li-air) batteries to evaluate their performance. The model consists of a set of partial differential equations of species and charges conservation, in conjunction of the electrochemical reaction kinetics at the reaction interface, and takes into account two major mechanisms of voltage loss due to insoluble discharge products formation: namely, electrode passivation and increased oxygen transport resistance. The model is successfully implemented to numerical simulation of discharging operation of a two-dimensional Li-air battery. Highly non-uniform distributions of oxygen and insoluble products are revealed under high current density. The pore space in the electrode is not fully utilized, particularly under high discharging current operation. The fundamental model and numerical tool are important for developing high-performance Li-air batteries.

scholarly journals A dual pore carbon aerogel based air cathode for a highly rechargeable lithium-air battery

2014 ◽  
Vol 272 ◽  
pp. 1061-1071 ◽  
Author(s):  
Fang Wang ◽  
Yang-Hai Xu ◽  
Zhong-Kuan Luo ◽  
Yan Pang ◽  
Qi-Xing Wu ◽  
...  
Keyword(s):  
Carbon Aerogel ◽  
Air Cathode ◽  
Air Battery

scholarly journals CoSb3 alloy nanoparticles wrapped with N-doped carbon layers as a highly active bifunctional electrocatalyst for zinc–air batteries

RSC Advances ◽  
2017 ◽  
Vol 7 (52) ◽  
pp. 33012-33019 ◽  
Author(s):  
Tian-bo Yang ◽  
Kai-Yuan Zhou ◽  
Guang-Yi Chen ◽  
Wan-Xi Zhang ◽  
Ji-Cai Liang
Keyword(s):  
Electrochemical Properties ◽  
Alloy Nanoparticles ◽  
Air Cathode ◽  
Bifunctional Electrocatalyst ◽  
Catalytic Activities ◽  
Highly Active ◽  
Air Battery ◽  
Zinc Air Batteries

CoSb3 nanoparticles wrapped with N-doped carbon layers have been prepared and showed excellent catalytic activities both for ORR and OER. A real rechargeable zinc–air battery with CoSb3@NCL-30 catalyst as air cathode exhibited outstanding electrochemical properties.

Evaluation of an Early Stage Air Cathode for Zinc Air Battery Applications

2014 ◽  
Vol 59 (1) ◽  
pp. 115-125 ◽  
Author(s):  
X. Zhang ◽  
W. Qu ◽  
J. Fahlman ◽  
K. Tsay ◽  
X.-Z. Yuan
Keyword(s):  
Early Stage ◽  
Air Cathode ◽  
Air Battery

Experimental Performance Evaluation of a Rechargeable Lithium-Air Battery With Hyper-Branched Polymer Electrolyte

2018 ◽  
Author(s):  
Susanta K. Das ◽  
K. Joel Berry
Keyword(s):  
Polymer Electrolyte ◽  
Real World ◽  
Lithium Metal ◽  
Air Cathode ◽  
Battery Cell ◽  
Branched Polymer ◽  
Experimental Performance ◽  
Operation Conditions ◽  
Air Battery ◽  
Battery Cells

Synthesis of hyper branched polymer (HBP) based electrolyte has been examined in this study. A real world lithium-air battery cell was fabricated using the developed HBP electrolyte, oxygen permeable air cathode and lithium metal as anode material. Detailed synthesis procedures of hyper branched polymer electrolyte and the effect of different operation conditions on the real-world lithium-air battery cell were discussed in this paper. The fabricated battery cells were tested under dry air with 0.1mA∼0.2mA discharge current to determine the effect of different operation conditions such as carbon source, electrolyte types and cathode processes. It was found that different processes affect the battery cell performance significantly. We developed optimized battery cell materials upon taking into account the effect of different processes. Several battery cells were fabricated using the same optimized anode, cathode and electrolyte materials in order to determine the battery cells performance and reproducibility. Experimental results showed that the optimized battery cells were able to discharge over 55 hours at over 2.5V. It implies that the optimized battery cell can hold charge for more than two days at over 2.5V. It was also shown that the lithium-air battery cell can be reproduced without loss of performance with the optimized battery cell materials.

A rechargeable zinc-air battery based on zinc peroxide chemistry

Science ◽  
2020 ◽  
Vol 371 (6524) ◽  
pp. 46-51
Author(s):  
Wei Sun ◽  
Fei Wang ◽  
Bao Zhang ◽  
Mengyi Zhang ◽  
Verena Küpers ◽  
...  
Keyword(s):  
Atmospheric Carbon Dioxide ◽  
Ambient Air ◽  
High Energy ◽  
Zinc Ion ◽  
High Energy Density ◽  
Air Cathode ◽  
Reversible Redox ◽  
Air Battery ◽  
Zinc Peroxide ◽  
Zinc Air Batteries

Rechargeable alkaline zinc-air batteries promise high energy density and safety but suffer from the sluggish 4 electron (e−)/oxygen (O2) chemistry that requires participation of water and from the electrochemical irreversibility originating from parasitic reactions caused by caustic electrolytes and atmospheric carbon dioxide. Here, we report a zinc-O2/zinc peroxide (ZnO2) chemistry that proceeds through a 2e−/O2 process in nonalkaline aqueous electrolytes, which enables highly reversible redox reactions in zinc-air batteries. This ZnO2 chemistry was made possible by a water-poor and zinc ion (Zn2+)–rich inner Helmholtz layer on the air cathode caused by the hydrophobic trifluoromethanesulfonate anions. The nonalkaline zinc-air battery thus constructed not only tolerates stable operations in ambient air but also exhibits substantially better reversibility than its alkaline counterpart.

Optimal cobalt oxide (Co3O4): Graphene (GR) ratio in Co3O4/GR as air cathode catalyst for air-breathing hybrid electrolyte lithium-air battery

2020 ◽  
Vol 471 ◽  
pp. 228373 ◽  
Author(s):  
Si-Han Peng ◽  
Tse-Hsi Chen ◽  
Chih-Hsun Lee ◽  
Hsin-Chun Lu ◽  
Shingjiang Jessie Lue
Keyword(s):  
Cobalt Oxide ◽  
Cathode Catalyst ◽  
Air Cathode ◽  
Air Breathing ◽  
Air Battery

scholarly journals Electrochemical Activity of a La0.9Ca0.1Co1−xFexO3Catalyst for a Zinc Air Battery Electrode

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Seungwook Eom ◽  
Seyoung Ahn ◽  
Sanghwan Jeong
Keyword(s):  
Oxygen Reduction ◽  
Electrochemical Measurement ◽  
Electrochemical Performances ◽  
Cathode Catalyst ◽  
Air Cathode ◽  
Substitution Level ◽  
Battery Electrode ◽  
Substitution Ratio ◽  
Air Battery ◽  
Battery Application

The optimum composition of cathode catalyst has been studied for rechargeable zinc air battery application. La0.9Ca0.1Co1−xFexO3  (x=0–0.4)perovskite powders were prepared using the citrate method. The substitution ratio of Co2+with Fe3+cations was controlled in the range of 0–0.4. The optimum substitution ratio of Fe3+cations was determined by electrochemical measurement of the air cathode composed of the catalyst, polytetrafluoroethylene (PTFE) binder, and Vulcan XC-72 carbon. The substitution by Fe enhanced the electrochemical performances of the catalysts. Considering oxygen reduction/evolution reactions and cyclability, we achieved optimum substitution level ofx=0.1in La0.9Ca0.1Co1−xFexO3.

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