Round 3: Tossup 4

The capacity of these devices is proportional to an expression raised to the dimensionless constant k according to one formulation of Peukert’s (“POY-kert's”) Law. S•S•Es such as L•L•Z•O are gaining traction to be utilized in one form of these devices, but remain challenged by dendrite formation. (15[1])John Goodenough won the 2019 Nobel Prize in Chemistry for developing one type of these devices where a cation is intercalated (15[1])into a graphite matrix. (*) Sulfuric acid is used as an electrolyte in the lead-acid type of these devices. (10[1])Nickel and cadmium name a common type of, for 10 points, what devices whose “lithium-ion” variant is rechargeable? ■END■

ANSWER: batteries [or battery; accept lithium-ion battery or Ni-Cad battery or or nickel-cadmium battery, or lead-acid battery] (SSEs are solid-state electrolytes)
<Science - Chemistry, Rohan Ganeshan> | VAULT II Packet 03
= Average correct buzzpoint

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Buzzes


Summary

TournamentEditionMatchHeardConv. %Power %Neg %Avg. Buzz
VAULT II at Georgia Tech2026-01-246100%33%17%72.83
Triangle Cup2026-03-133100%0%0%83.67
VAULT II at Eden Prairie HS2026-03-133100%67%0%64.00
VAULT II at McGill2026-03-134100%0%0%83.50
VAULT II at UCSB2026-03-135100%60%0%65.80
VAULT II Northern UK2026-04-243100%67%0%64.00
VAULT II Southern UK2026-04-244100%50%25%67.75
VAULT II at Harvard2026-04-304100%50%0%65.00
VAULT II at MINT2026-06-195100%20%0%80.40
VAULT II Stanford Online2026-07-178100%63%25%61.75