Modeling self-discharge of Li/SOCl2 cells

Spotnitz, Robert; Yeduvaka, Gowri; Nagasubramanian, Ganesan; Jungst, Rudolph G.

doi:10.1016/j.jpowsour.2006.09.025

Cited by 29 publications

(17 citation statements)

References 10 publications

(19 reference statements)

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“…The excellent electrochemical performance of Li/SOCl 2 primary batteries and reserve batteries has aroused great interest over the past two decades [1][2][3][4][5][6]. However, the energy of Li/SOCl 2 battery in practice is much lower than that in theory, which renders a great challenge in the application of Li/SOCl 2 battery.…”

Section: Introductionmentioning

confidence: 99%

Influence of the electronic configuration of the central metal ions on catalytic activity of metal phthalocyanines to Li/SOCl2 battery

Zhao

et al. 2009

Journal of Power Sources

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Section: Introductionmentioning

confidence: 99%

Influence of the electronic configuration of the central metal ions on catalytic activity of metal phthalocyanines to Li/SOCl2 battery

Zhao

et al. 2009

Journal of Power Sources

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“…After separation from the mothership, power is provided by a battery consisting of nine SAFT LSH20 D-size non-rechargeable Li-SOCl 2 primary cells (Spotnitz et al 2006;Eisenmann 1996;Evans et al 1989 andCho 1987). The cell type used has flight heritage; in fact, due to timely availability the cells used in the development of the MASCOT lander are from exactly the same batch as those used on the cometary lander Philae.…”

Section: The Mascot Batterymentioning

confidence: 99%

“…A brief loading of the battery before separation verifies that it has been switched on and is healthy. A brief power draw is also necessary to overcome the voltage delay phenomenon characteristic of Li-SOCl 2 chemistries (Eisenmann 1996;Spotnitz et al 2006) by a controlled depassivation while a fall-back power source is still available in case the UPB voltage drops so low as to cause a system restart. The PCDU was delivered by CNES with a development by Steel.…”

Section: Mascot Power Conditioning and Distribution Unitmentioning

confidence: 99%

MASCOT—The Mobile Asteroid Surface Scout Onboard the Hayabusa2 Mission

Ho,

Baturkin,

Grimm

et al. 2016

Space Sci Rev

127

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On December 3rd, 2014, the Japanese Space Agency (JAXA) launched successfully the Hayabusa2 (HY2) spacecraft to its journey to Near Earth asteroid (162173) Ryugu. Aboard this spacecraft is a compact landing package, MASCOT (Mobile Asteroid surface SCOuT), which was developed by the German Aerospace Centre (DLR) in collaboration with the Centre National d'Etudes Spatiales (CNES). Similar to the famous predecessor mission Hayabusa, Hayabusa2, will also study an asteroid and return samples to Earth. This time, however, the target is a C-type asteroid which is considered to be more primitive than (25143) Itokawa and provide insight into an even earlier stage of our Solar System.Upon arrival at asteroid Ryugu in 2018, MASCOT will be released from the HY2 spacecraft and gently descend by free fall from an altitude of about 100 m to the surface of the asteroid. After a few bounces, the lander will come to rest at the surface and perform its scientific investigations of the surface structure and mineralogical composition, the thermal behaviour and the magnetic properties by operating its four scientific instruments. Those include an IR imaging spectrometer (MicrOmega, IAS Paris), a camera (MASCAM, DLR Berlin), a radiometer (MARA, DLR Berlin) and a magnetometer (MASMAG, TU Braunschweig).In order to allow optimized payload operations the thermal design of MASCOT is required to cope with the contrasting requirements of the 4-year cruise in cold environment versus the hot conditions on the surface of the asteroid. Operations up to 2 asteroid days (∼16 hours) based on a primary battery are currently envisaged. A mobility mechanism allows locomotion on the surface. The mechanism is supported by an attitude and motion sensing system and an intelligent autonomy manager, which is implemented in the onboard software that enables MASCOT to operate fully independently when ground intervention is not available.

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“…Li/SOCl 2 cells have the highest energy density among the realized chemical power sources, high working voltage and stable discharge voltage, and can be used in wide operating temperature ranges and stored for a long time [1][2][3]. However, the Li/SOCl 2 cell also has some problems such as the safety performance, the voltage delay phenomenon and the large current discharge capabilities [4].…”

Section: Introductionmentioning

confidence: 99%