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All-solid-state lithium-oxygen battery with high safety in wide ambient temperature range.

Kitaura H, Zhou H - Sci Rep (2015)

Bottom Line: The cell works at room temperature and first full discharge capacity of 1420 mAh g(-1) at 10 mA g(-1) (based on the mass of carbon material in the air electrode) was obtained.The charge curve started from 3.0 V, and that the majority of it lay below 4.2 V.The cell also safely works at high temperature over 80 °C with the improved battery performance.

View Article: PubMed Central - PubMed

Affiliation: Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology, Umezono, 1-1-1, Tsukuba, 305-8568, JAPAN.

ABSTRACT
There is need to develop high energy storage devices with high safety to satisfy the growing industrial demands. Here, we show the potential to realize such batteries by assembling a lithium-oxygen cell using an inorganic solid electrolyte without any flammable liquid or polymer materials. The lithium-oxygen battery using Li1.575Al0.5Ge1.5(PO4)3 solid electrolyte was examined in the pure oxygen atmosphere from room temperature to 120 °C. The cell works at room temperature and first full discharge capacity of 1420 mAh g(-1) at 10 mA g(-1) (based on the mass of carbon material in the air electrode) was obtained. The charge curve started from 3.0 V, and that the majority of it lay below 4.2 V. The cell also safely works at high temperature over 80 °C with the improved battery performance. Furthermore, fundamental data of the electrochemical performance, such as cyclic voltammogram, cycle performance and rate performance was obtained and this work demonstrated the potential of the all-solid-state lithium-oxygen battery for wide temperature application as a first step.

No MeSH data available.


Related in: MedlinePlus

Impedance spectra for all-solid-state Li-O2 cell at different temperatures before discharging.(a) Impedance spectra and (b) enlarged view of part of data at room temperature, 80 °C, and 120 °C. Black, red and blue circles indicate the spectra at room temperature, 80 °C and 120 °C, respectively.
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f3: Impedance spectra for all-solid-state Li-O2 cell at different temperatures before discharging.(a) Impedance spectra and (b) enlarged view of part of data at room temperature, 80 °C, and 120 °C. Black, red and blue circles indicate the spectra at room temperature, 80 °C and 120 °C, respectively.

Mentions: Another way to enhance the cell performance is to increase the temperature, since the lithium ion conductivity and reaction kinetics are enhanced at increased temperature. In addition, having a wide operating temperature range is an advantage since the battery can be used in various environments. Figure 3a shows the impedance spectra of the cells at RT, 80 °C and 120 °C; Fig. 3b shows an enlarged view of part of Fig. 3a. The data described a semicircle in the high frequency region and a linear trend in the low frequency region. The total cell resistance was determined by the intersection of the semicircle at the low frequency side. The cell at RT showed a resistance of about 2600 Ω, which decreased with increasing temperature. The cell resistance was about 500 Ω and 300 Ω at 80 °C and 120 °C, respectively. The unchanged shape of the impedance spectra at elevated temperature indicated that heating caused no unfavorable, severe reactions between the electrode materials.


All-solid-state lithium-oxygen battery with high safety in wide ambient temperature range.

Kitaura H, Zhou H - Sci Rep (2015)

Impedance spectra for all-solid-state Li-O2 cell at different temperatures before discharging.(a) Impedance spectra and (b) enlarged view of part of data at room temperature, 80 °C, and 120 °C. Black, red and blue circles indicate the spectra at room temperature, 80 °C and 120 °C, respectively.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4543982&req=5

f3: Impedance spectra for all-solid-state Li-O2 cell at different temperatures before discharging.(a) Impedance spectra and (b) enlarged view of part of data at room temperature, 80 °C, and 120 °C. Black, red and blue circles indicate the spectra at room temperature, 80 °C and 120 °C, respectively.
Mentions: Another way to enhance the cell performance is to increase the temperature, since the lithium ion conductivity and reaction kinetics are enhanced at increased temperature. In addition, having a wide operating temperature range is an advantage since the battery can be used in various environments. Figure 3a shows the impedance spectra of the cells at RT, 80 °C and 120 °C; Fig. 3b shows an enlarged view of part of Fig. 3a. The data described a semicircle in the high frequency region and a linear trend in the low frequency region. The total cell resistance was determined by the intersection of the semicircle at the low frequency side. The cell at RT showed a resistance of about 2600 Ω, which decreased with increasing temperature. The cell resistance was about 500 Ω and 300 Ω at 80 °C and 120 °C, respectively. The unchanged shape of the impedance spectra at elevated temperature indicated that heating caused no unfavorable, severe reactions between the electrode materials.

Bottom Line: The cell works at room temperature and first full discharge capacity of 1420 mAh g(-1) at 10 mA g(-1) (based on the mass of carbon material in the air electrode) was obtained.The charge curve started from 3.0 V, and that the majority of it lay below 4.2 V.The cell also safely works at high temperature over 80 °C with the improved battery performance.

View Article: PubMed Central - PubMed

Affiliation: Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology, Umezono, 1-1-1, Tsukuba, 305-8568, JAPAN.

ABSTRACT
There is need to develop high energy storage devices with high safety to satisfy the growing industrial demands. Here, we show the potential to realize such batteries by assembling a lithium-oxygen cell using an inorganic solid electrolyte without any flammable liquid or polymer materials. The lithium-oxygen battery using Li1.575Al0.5Ge1.5(PO4)3 solid electrolyte was examined in the pure oxygen atmosphere from room temperature to 120 °C. The cell works at room temperature and first full discharge capacity of 1420 mAh g(-1) at 10 mA g(-1) (based on the mass of carbon material in the air electrode) was obtained. The charge curve started from 3.0 V, and that the majority of it lay below 4.2 V. The cell also safely works at high temperature over 80 °C with the improved battery performance. Furthermore, fundamental data of the electrochemical performance, such as cyclic voltammogram, cycle performance and rate performance was obtained and this work demonstrated the potential of the all-solid-state lithium-oxygen battery for wide temperature application as a first step.

No MeSH data available.


Related in: MedlinePlus