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Tuesday, July 21, 2020 | History

3 edition of Effect of KOH concentration on LEO cycle life of IPV nickel-hydrogen flight battery cells found in the catalog.

Effect of KOH concentration on LEO cycle life of IPV nickel-hydrogen flight battery cells

Effect of KOH concentration on LEO cycle life of IPV nickel-hydrogen flight battery cells

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  • 36 Currently reading

Published by National Aeronautics and Space Administration, For sale by the National Technical Information Service in [Washington, DC], [Springfield, Va .
Written in English

    Subjects:
  • Batteries (Ordnance) -- Testing.,
  • Space vehicles.

  • Edition Notes

    StatementJohn J. Smithrick and Stephen W. Hall.
    SeriesNASA technical memorandum -- 103127.
    ContributionsHall, Stephen W., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15299820M

    Fig. 3. Effect of LEO cycling at 80 % DOD on A-h IPV Hughes flight cells containing 26% KOH. IPV nickel-hydrogen flight cells manufactured by Hughes un­ derwent cycle life testing. Three of the cells contained 26% KOH electrolyte (test cells). The other three cells (control. Full text of "NASA Technical Reports Server (NTRS) The NASA Aerospace Battery Workshop" See other formats.

    Validation test of Ah advanced design IPV nickel-hydrogen flight cells by: Smithrick, John J. Published: () Effect of KOH concentration on LEO cycle life of IPV nickel-hydrogen flight cells update II / by: Smithrick, John J. Published: (). The purpose was to investigate the effect of KOH concentration on cycle life. The cycle regime was a stressful accelerated LEO, which consisted of a min charge followed by a min.

      Fig. 1 shows the effect of KOH concentration on the crystalline structure of cobalt oxide particles synthesized in scH 2 O. The particles synthesized in the absence of KOH (Co-1) or with a small concentration of KOH ( M, Co-2) retained the spinel Co 3 O 4 phase (Fig. 1a and b, JCPDS card no. ). On increasing the KOH concentration to M, additional peaks associated with the. Cycle life prediction is an essential component in the health management of nickel hydrogen battery. Before cell fail, the electrical behavior EODV could reduce with the use.


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Effect of KOH concentration on LEO cycle life of IPV nickel-hydrogen flight battery cells Download PDF EPUB FB2

Effect of KOH Concentration on LEO Cycle Life of IPV Nickel-Hydrogen Flight Battery Cells John J. Smithrick Lewis Research Center Cleveland, Ohio and Stephen W.

Hall Naval Weapons Support Center Crane, Indiana Prepared for the 25th Intersociety Energy Conversion Engineering Conference cosponsored by the AIChE, SAE, ACS, AIAA, ASME, and IEEE. @article{osti_, title = {Effect of KOH concentration on LEO cycle life of IPV nickel-hydrogen flight battery cells}, author = {Smithrick, J J and Hall, S W}, abstractNote = {A breakthrough in low earth orbit (LEO) cycle life of individual pressure vessel (IPV) nickel hydrogen battery cells was reported.

The cycle life of boiler plate cells containing 26 percent potassium hydroxide (KOH. LEO cycle life testing at 80 percent depth-of-discharge.

In this report results of cycle life testing of Hughes 48 A-hr flight cells containing 26 and 31 percent KOH electrolyte are updated (4,5). EXPERIMENTAL Test Facility The facility is capable of testing 45 battery packs with a maximum of 10 cells electrically connected in series per pack.

An update of validation test results confirming the breakthrough in low earth orbit (LEO) cycle life of nickel-hydrogen cells containing 26 percent KOH electrolyte is presented.

A breakthrough in the LEO cycle life of individual pressure vessel (IPV nickel-hydrogen cells has been previously reported. The cycle life of boiler plate cells containing 26 percent potassium hydroxide (KOH Author: John J.

Smithrick, Stephen W. Hall. The cycle regime was a stressful accelerated LEO, which consisted of a min charge followed by a min discharge (2X normal rate). The depth-of-discharge was 80 percent. Six Ah Hughes recirculation design IPV nickel-hydrogen flight battery cells are being evaluated.

Three of the cells contain 26 percent KOH (test cells), and three Author: John J. Smithrick and Stephen W. Hall. A breakthrough in the LEO cycle life of individual pressure vessel nickel-hydrogen cells is reported. The cycle life of boiler plate cells containing 26 percent KOH electrolyte was ab LEO cycles compared to cycles for cells containing 31 percent KOHAuthor: Stephen W.

Hall and John J. Smithrick. Effect of KOH concentration on LEO cycle life of IPV nickel-hydrogen flight cells update II. [Washington, DC]: [Springfield, Va: National Aeronautics and Space Administration ; For sale by the National Technical Information Service.

MLA Citation. Smithrick, John. A breakthrough in the low-earth-orbit cycle life of individual pressure vessel nickel-hydrogen battery cells was reported. The cycle life of boiler plate cells containing 26 percent KOH electrolyte was about 40 accelerated LEO cycles at 80 percent DOD com-pared to 3 cycles for cells containing 31 percent KOH.

Six 48 Ah Hughes recirculation design IPV nickel-hydrogen flight battery cells are being evaluated. Three of the cells contain 26 percent KOH (test cells), and three contain 31 percent KOH (control cells). They are undergoing real time LEO cycle life testing. The cycle regime is a min LEO orbit consisting of a min charge followed by a Six 48 A-hr Hughes recirculation design IPV nickel-hydrogen flight battery cells are being evaluated.

Three of the cells contain 26 percent KOH (test cells) and three contain 31 percent KOH (control cells). They are undergoing real time LEO cycle life testing. The cycle regime is a min LEO orbit consisting of a min charge followed by a   A breakthrough in the LEO cycle life of individual pressure vessel (IPV nickel-hydrogen cells has been previously reported.

The cycle life of boiler plate cells containing 26 percent potassium hydroxide (KOH) electrolyte was about 40 LEO cycles compared to cycles for cells containing 31 percent KOH. Potassium hydroxide concentration effects on the cycle life of a Ni/H 2 cell have been studied by carrying out a cycle life test on ten Ni/H 2 boiler plate cells which contain electrolytes of various KOH concentrations.

Failure analyses of these cells were carried out after completion of the life test, which accumulated up to 40 cycles at an 80% depth of discharge over a period of years.

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Featured software All software latest This Just In Old School Emulation MS-DOS Games Historical Software Classic PC. Effect of storage on capacity of Ah Eagle-Picher advanced IPV nickel/hydrogen flight cells, catalyzed and noncatalyzed wall wick, 26% KOH. 1 CELL VOLTAGE END OF DISCHARGE O CELL 1 o CELL 2 o CELL 3 1.s -i 12 0 CYCLE NUMBER Fig.

Battery reinitialization of the photovoltaic module of the international space station [microform] / Gya Validation test of advanced technology for IPV nickel-hydrogen flight cells--update [microform] / John J Effect of KOH concentration on LEO cycle life of IPV nickel-hydrogen flight cells [microform]:.

A breakthrough in low earth orbit (LEO) cycle life of individual pressure vessel (IPV) nickel hydrogen battery cells was reported. The cycle life of boiler plate cells containing 26 percent potassium hydroxide (KOH) electrolyte was ab LEO cycles compared to cycles for cells containing 31 percent KOH.

The effect of KOH. Effects of KOH concentration on the cycle life of a sintered-type nickel electrode were studied in a boiler plate nickel-hydrogen cell at 23 C using an accelerated min cycle regime at   Extensive characterization testing has been done on a second 40 ampere hour (A h), cell, bipolar nickel—hydrogen (Ni—H 2) battery to study the effects of operating parameters such as charge and discharge rates, temperature, and pressure on capacity, A h and watt hour (W h) efficiencies, end-of-charge (EOC), and mid-point discharge voltages.

Testing to date has produced many. Get this from a library. Effect of KOH concentration on LEO cycle life of IPV nickel-hydrogen flight cells: an update. [John J Smithrick; Stephen W Hall; United. Effect of KOH concentration on LEO cycle life of IPV nickel-hydrogen flight cells [microform]: update I Validation test of advanced technology for IPV nickel-hydrogen flight cells--update [microform] / John J Validation test of Ah advanced design IPV nickel-hydrogen flight cells [microform] / John J.

Smithri. A breakthrough in low earth orbit (LEO) cycle life of individual pressure vessel (IPV) nickel hydrogen battery cells was reported. The cycle life of boiler plate cells containing 26 percent potassium hydroxide (KOH) electrolyte was ab LEO cycles compared to cycles for cells containing 31 percent KOH.

Therefore, minimizing anionic impurities is vital for long-life nickel electrodes. 8. Effect of KOH concentration This study has highlighted differences in the behavior of the nickel electrode in 26% KOH - a new concentration for the electrolyte advocated by Lim and co-workers [ 10,13].Lim, and S.

A. Verzwyvelt, “KOH Concentration Effect on Cycle Life ofNickel Hydrogen Cells, III. Cycle Life Test,” Journal of Power Sources, Vol. 22, Mar-Aprpp. 43 CELL DESCRIPTION TYPE SEPARATOR Weight (grams)* Cell Length (in) Dome to Dome Cell Length (in) Overall strain gage weight subtracted (17g) TABLE 1 Single Zircar.