Question

Design an ultra-capacitor. Find an electrode geometry which maximizes the stored charge for a 100 cm3 volume. Discuss possible physical limits for the design, including dielectric breakdown, leakage current, and mechanical stability. Assume the operating voltage is 16 V. Compare your design to performance of commercially available units (e.g.from Maxwell Technologies).

Answer 1

Rough nanopore Slit nanopore Nanotube Open flat electrode Electrode geometry Capacitance

capacitive ene torage dtevices neceiving inneasing eIperimen ta Poten tial for en ergy applications. Curent lield and thedati ca thein attent on due to enomDuu Teseanch in hic is fcused both the on mprove ment the Super capa si os ere and the power densty nano stnuclure and th the Povous electvodes structure tomposition of Chemica elecbalyfet the NanD lu bes CCNT) is the of hese, out best electio de marimizes s tded Charge metry -that becau the has conducting Capadty than op per 6f hat bette of steel as has Sin th mass about Dne phoykical limits besign 7aphane Lauyored page depends upon moy the nano tu be -the 0lle d up nanota ke Shee nanotu be Preterned that most Malti anp we ll a s a s minimize CLurYYent be Can leak inceased upto dorger extent darge fuae tre egh mechanical extremty Hme to the DLLE area Cons tant etec tode Last the shemely dong of the due to the electroole geometry Cnd pde Size lta capacits voltag Can be open ated over wide <pectun the'rn ated tom voltage bneakdown vol tage Vol ts The nati ng nanDtu be is 2.7 Per cel bich is mainty denived by the e lectro chemical tyte and elec tro electrode matenials

applyapiceapl+ ccop) V capt V opeating NOI di ele chic bre ak down 16 .143 v. loites associate d with The inter nalresis ten ce of ultna cap atitons device nesultng due to Cne the IR dop dving yeng capaciter effici enty high mast Foy the ultra ercess of 98. for Con powe Current opicains ePReiency the effiueny hagh re duced ica un des pulser Curent 9eatey than