Metal phthalocyanine-catalysed Li/SOCl2 cells

Abraham, K. M.; Alamgir, M.; Willstaedt, E. B.; Kilroy, William P.

doi:10.1016/0013-4686(92)87046-3

Cited by 18 publications

(10 citation statements)

References 7 publications

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“…Structural changes produced from the pyrolysis of CoPC dispersed on high surface area carbon have been documented previously. [26][27][28]33 Through a study of the thermal gravimetric analysis conducted by Abraham et al it was shown that the macrocycle dispersed on a high surface area carbon remains intact upon heat-treatment up to 600 • C. 33 It should also be noted that pyrolysis of CoPC (C 33.3 H 15.3 N 8.3 Co) (without carbon) at 600 • C results in small structural changes, primarily involving the removal of some hydrogens, leaving a residue with the composition of C 33.9 H 11.4 . 4 N 9.1 Co.…”

Section: Resultsmentioning

confidence: 99%

Cobalt Phthalocyanine Catalyzed Lithium-Air Batteries

Trahan

Jia

Mukerjee

et al. 2013

J. Electrochem. Soc.

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The full reduction of O2 to Li2O is the ultimate chemistry desired for building a super high energy density Li-air battery. Most investigations to date have identified Li2O2 as the discharge product which limits the specific energy of the Li-air battery to 3500 Wh kg−1, about 67% of the theoretical value. Here, for the first time, we report the full reduction of O2 to Li2O in a Li-air cell using cobalt phthalocyanine catalyzed carbon cathodes. Details of the oxygen reduction reaction mechanism have been discerned through cyclic voltammetry experiments in half cells as well as analysis of discharged Li-air cell cathodes by means of X-ray absorption spectroscopy and X-ray diffraction. The catalyst lowers the activation energy for O2 reduction by forming a complex with superoxide, and enables the reduction of Li2O2 to Li2O. In addition, the catalyst is effective in lowering the gap between the discharge and charge voltage plateaus leading to an increase in the energy efficiency of the Li-air battery. The breakthrough in the discharge chemistry being reported could lead to the realization of the full potential of the Li-air battery.

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Section: Resultsmentioning

confidence: 99%

Cobalt Phthalocyanine Catalyzed Lithium-Air Batteries

Trahan

Jia

Mukerjee

et al. 2013

J. Electrochem. Soc.

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“…1. It has been reported that CoPc plays an important role in Li/SOCl 2 cells, which is added to the Li/SOCl 2 cells as electrocatalyst to improve the discharge capacity, the discharge current and the lifespan of the cells [9,10]. The effect of CoPc on the performance of BCX cell was studied in this paper.…”

Section: Introductionmentioning

confidence: 97%

Comparative study on carbon cathodes with and without cobalt phthalocyanine in Li/(SOCl2+BrCl) cells

Guo

Zhou

et al. 2009

Journal of Power Sources

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“…In order to improve the practical capacity and overcome the issues of Li/SOCl 2 battery, considerable efforts have been attempted according to the cell reaction processes. [3][4][5][6][7][8][9][10][11][12][13][14][15] Among these researches, metal phthalocyanine as Li/SOCl 2 battery electrocatalyst becomes of current research interest and some progresses have been achieved. [6][7][8][9][10][11][12] Metal phthalocyanine, owning the conjugated system of 18 π-electrons, exhibits many good properties, for example, thermal stability and chemical stability.…”

mentioning

confidence: 99%

“…[3][4][5][6][7][8][9][10][11][12][13][14][15] Among these researches, metal phthalocyanine as Li/SOCl 2 battery electrocatalyst becomes of current research interest and some progresses have been achieved. [6][7][8][9][10][11][12] Metal phthalocyanine, owning the conjugated system of 18 π-electrons, exhibits many good properties, for example, thermal stability and chemical stability. Attributed to its special properties, it is very suitable to be used as a catalyst applied to oxidation-reduction reaction.…”

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confidence: 99%

Multi-Walled Carbon Nanotubes Chemically Modified by Cobalt Tetraaminophthalocyanines with Excellent Electrocatalytic Activity to Li/SOCl₂Battery

Zhang

Wang

Luo

et al. 2014

J. Electrochem. Soc.

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Fluorinated Multi-walled carbon nanotubes (F-MWCNTs) are chemically modified successfully by cobalt 2, 9, 16, 23tetraaminophthalocyanine and cobalt 1, 8, 15, 22-tetraaminophthalocyanine respectively. Their structures are characterized by IR, SEM, XPS and XRD. Important in this context is that the covalent linkages between F-MWCNTs and cobalt phthalocyanines are corroborated by monitoring the diagnostic signature of the nitrogen atoms as part of the formed -NH-bonds in them by XPS. The electrocatalytic activity of the two kinds of modified F-MWCNTs to Li/SOCl 2 battery is evaluated by adding them into the electrolyte of the battery. It is found that the modified F-MWCNTs can dramatically improve the discharge voltage and lengthen the discharge time of the battery, and finally make the capacity of the battery increase by 97.5% and 103.3% than that of the battery in the absence of them. The excellent electrocatalytic performance of the modified F-MWCNTs may be owing to the fine synergistic effect between the cobalt phthalocyanines and the MWCNTs in them. A reasonable catalytic mechanism of the modified F-MWCNTs to the battery is proposed according to the CV results.

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Metal phthalocyanine-catalysed Li/SOCl2 cells

Cited by 18 publications

References 7 publications

Cobalt Phthalocyanine Catalyzed Lithium-Air Batteries

Cobalt Phthalocyanine Catalyzed Lithium-Air Batteries

Comparative study on carbon cathodes with and without cobalt phthalocyanine in Li/(SOCl2+BrCl) cells

Multi-Walled Carbon Nanotubes Chemically Modified by Cobalt Tetraaminophthalocyanines with Excellent Electrocatalytic Activity to Li/SOCl₂Battery

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Metal phthalocyanine-catalysed Li/SOCl2 cells

Cited by 18 publications

References 7 publications

Cobalt Phthalocyanine Catalyzed Lithium-Air Batteries

Cobalt Phthalocyanine Catalyzed Lithium-Air Batteries

Comparative study on carbon cathodes with and without cobalt phthalocyanine in Li/(SOCl2+BrCl) cells

Multi-Walled Carbon Nanotubes Chemically Modified by Cobalt Tetraaminophthalocyanines with Excellent Electrocatalytic Activity to Li/SOCl2Battery

Contact Info

Product

Resources

About

Multi-Walled Carbon Nanotubes Chemically Modified by Cobalt Tetraaminophthalocyanines with Excellent Electrocatalytic Activity to Li/SOCl₂Battery