The influence of gamma radiation on Electrical behaviour of isotactic polypropylene

Mouaci, S.; Belkahla, N.; Saidi-Amroun, N.; Saïdi, M.

doi:10.1109/icsd.2013.6619717

Cited by 4 publications

(1 citation statement)

References 16 publications

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“…When exposed to radiation, they are susceptible to photooxidation which results in a reaction that reduces PP's molecular weight by effectively thinning the material, provoking the loss of surface smoothness and discoloration. 32,33 Samples of PP film were obtained from several dissected batteries; unirradiated reference battery, B511, B512, B513, B515, B522, B313, B322, and B323. A section from the end of the PP strips was sampled and put under uniformly bright overhead white light on top of a simple A4 white paper to minimize color variation caused by the environment.…”

Section: Post-radiation Physical Damagesmentioning

confidence: 99%

Radiation Testing of Commercial Rechargeable Lithium Polymer Batteries for Small Satellite Applications

Muçogllava¹,

Hashmani²,

Çakmakoğlu³

et al. 2022

J. Electrochem. Soc.

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Commercial-off-the-shelf (COTS) electrical components are becoming of interest for small satellite applications due to their accessibility, good performance, and low cost. We quantify the performance of Lithium Polymer (LiPo) COTS batteries under irradiation to assess their reliability. LiPo battery cells with LiCoO2 cathodes, nominal voltages of 3.7 V, and rated capacities of 6000 mAh are irradiated with a 30 MeV proton beam from the Middle East Technical University Defocusing Beamline, which delivers a maximum of 69 krad primary dose. Results show protons cause short-term damage, resulting in up to 17% faster discharge rates, which decreases after six months depending on the cell's position and primary and secondary deposited dose. Additionally, a consumption rate increase of up to 42% occurs for the cells under prolonged secondary irradiation (1.2 krad). The separating polypropylene layer undergoes thinning and discoloration mainly due to secondary particles like neutrons and gammas. Finally, the LiCoO2 cathode of two batteries show dried polymer binder, polyvinylidene fluoride (PVdF), build-up, both potentially caused by discharge in a radioactive environment. Damaged cells do not suffer leakage.

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Section: Post-radiation Physical Damagesmentioning

confidence: 99%