Polythiophene mesoporous birnessite-MnO2/Pd cathode air electrode for rechargeable Li-air battery

Arjun Kumar Thapa; Bill Pandit; Hem Sharma Paudel; Rajesh Thapa; Shintaro Ida; Jacek B. Jasinski; Gamini U. Sumanasekera; Tatsumi Ishihara

doi:10.1016/j.electacta.2014.02.071

Polythiophene mesoporous birnessite-MnO₂/Pd cathode air electrode for rechargeable Li-air battery

Arjun Kumar Thapa, Bill Pandit, Hem Sharma Paudel, Rajesh Thapa, Shintaro Ida, Jacek B. Jasinski, Gamini U. Sumanasekera, Tatsumi Ishihara

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

Mesoporous birnessite-manganese oxide (b-MnO₂) was studied for air electrode for Li-air rechargeable battery. In this study, mesoporous b-MnO₂ with an average pore size of 3.52 nm and BET surface area of 237 m² g^-1 was successfully prepared using inorganic/organic phase. Prepared mesoporous b-MnO₂ was applied for air electrode for Li-air battery and discharge capacity of 345 mAh g ^-1 was observed at a current of 0.13 mA cm^-2. With the dispersion of small amount of Pd to mesoporous b-MnO₂, it was found that the Li-air cell showed a reasonably large discharge capacity of 487 mAh g^-1 at 0.13 mA cm^-2 at the initial cycle. The first discharge plateau around 2.71 V vs. Li/Li⁺ and charge plateau at 3.58 V vs. Li/Li⁺ with highly reversible capacity were observed. The energy efficiency for the charge and discharge was estimated to be ca. 76.4%. The ex-situ XRD result of the mesoporous b-MnO₂/Pd/TAB-2 (85/5/10) air electrode suggested that the observed capacity mainly came from Li ⁺ and O₂ to form Li₂O₂ after discharge to 2.0 V. Formation of Li₂CO₃ was hardly observed.

Original language	English
Pages (from-to)	410-415
Number of pages	6
Journal	Electrochimica Acta
Volume	127
DOIs	https://doi.org/10.1016/j.electacta.2014.02.071
Publication status	Published - May 1 2014

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)
Electrochemistry

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10.1016/j.electacta.2014.02.071

Cite this

@article{72501cf2796f4e1fa081caff5f709685,

title = "Polythiophene mesoporous birnessite-MnO2/Pd cathode air electrode for rechargeable Li-air battery",

abstract = "Mesoporous birnessite-manganese oxide (b-MnO2) was studied for air electrode for Li-air rechargeable battery. In this study, mesoporous b-MnO2 with an average pore size of 3.52 nm and BET surface area of 237 m2 g-1 was successfully prepared using inorganic/organic phase. Prepared mesoporous b-MnO2 was applied for air electrode for Li-air battery and discharge capacity of 345 mAh g -1 was observed at a current of 0.13 mA cm-2. With the dispersion of small amount of Pd to mesoporous b-MnO2, it was found that the Li-air cell showed a reasonably large discharge capacity of 487 mAh g-1 at 0.13 mA cm-2 at the initial cycle. The first discharge plateau around 2.71 V vs. Li/Li+ and charge plateau at 3.58 V vs. Li/Li+ with highly reversible capacity were observed. The energy efficiency for the charge and discharge was estimated to be ca. 76.4%. The ex-situ XRD result of the mesoporous b-MnO2/Pd/TAB-2 (85/5/10) air electrode suggested that the observed capacity mainly came from Li + and O2 to form Li2O2 after discharge to 2.0 V. Formation of Li2CO3 was hardly observed.",

author = "Thapa, {Arjun Kumar} and Bill Pandit and Paudel, {Hem Sharma} and Rajesh Thapa and Shintaro Ida and Jasinski, {Jacek B.} and Sumanasekera, {Gamini U.} and Tatsumi Ishihara",

note = "Funding Information: This work was financially supported by Li-EAD project of the New Energy and Industrial Technology Development Organization (NEDO), Japan.",

year = "2014",

month = may,

day = "1",

doi = "10.1016/j.electacta.2014.02.071",

language = "English",

volume = "127",

pages = "410--415",

journal = "Electrochimica Acta",

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TY - JOUR

T1 - Polythiophene mesoporous birnessite-MnO2/Pd cathode air electrode for rechargeable Li-air battery

AU - Thapa, Arjun Kumar

AU - Pandit, Bill

AU - Paudel, Hem Sharma

AU - Thapa, Rajesh

AU - Ida, Shintaro

AU - Jasinski, Jacek B.

AU - Sumanasekera, Gamini U.

AU - Ishihara, Tatsumi

N1 - Funding Information: This work was financially supported by Li-EAD project of the New Energy and Industrial Technology Development Organization (NEDO), Japan.

PY - 2014/5/1

Y1 - 2014/5/1

N2 - Mesoporous birnessite-manganese oxide (b-MnO2) was studied for air electrode for Li-air rechargeable battery. In this study, mesoporous b-MnO2 with an average pore size of 3.52 nm and BET surface area of 237 m2 g-1 was successfully prepared using inorganic/organic phase. Prepared mesoporous b-MnO2 was applied for air electrode for Li-air battery and discharge capacity of 345 mAh g -1 was observed at a current of 0.13 mA cm-2. With the dispersion of small amount of Pd to mesoporous b-MnO2, it was found that the Li-air cell showed a reasonably large discharge capacity of 487 mAh g-1 at 0.13 mA cm-2 at the initial cycle. The first discharge plateau around 2.71 V vs. Li/Li+ and charge plateau at 3.58 V vs. Li/Li+ with highly reversible capacity were observed. The energy efficiency for the charge and discharge was estimated to be ca. 76.4%. The ex-situ XRD result of the mesoporous b-MnO2/Pd/TAB-2 (85/5/10) air electrode suggested that the observed capacity mainly came from Li + and O2 to form Li2O2 after discharge to 2.0 V. Formation of Li2CO3 was hardly observed.

AB - Mesoporous birnessite-manganese oxide (b-MnO2) was studied for air electrode for Li-air rechargeable battery. In this study, mesoporous b-MnO2 with an average pore size of 3.52 nm and BET surface area of 237 m2 g-1 was successfully prepared using inorganic/organic phase. Prepared mesoporous b-MnO2 was applied for air electrode for Li-air battery and discharge capacity of 345 mAh g -1 was observed at a current of 0.13 mA cm-2. With the dispersion of small amount of Pd to mesoporous b-MnO2, it was found that the Li-air cell showed a reasonably large discharge capacity of 487 mAh g-1 at 0.13 mA cm-2 at the initial cycle. The first discharge plateau around 2.71 V vs. Li/Li+ and charge plateau at 3.58 V vs. Li/Li+ with highly reversible capacity were observed. The energy efficiency for the charge and discharge was estimated to be ca. 76.4%. The ex-situ XRD result of the mesoporous b-MnO2/Pd/TAB-2 (85/5/10) air electrode suggested that the observed capacity mainly came from Li + and O2 to form Li2O2 after discharge to 2.0 V. Formation of Li2CO3 was hardly observed.

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