Technically, a copper wire is a battery that charges in (a very tiny fraction of ) seconds.
Comment on New nickel-iron battery charges in seconds, survives 12,000 cycles
Ilovethebomb@sh.itjust.works 18 hours ago
However, this technology does not yet match the energy density of lithium-ion batteries.
It would be good if you actually told us what that energy density is…
InnerScientist@lemmy.world 16 hours ago
Zink@programming.dev 8 hours ago
ahkshuallly, don’t you mean a capacitor?
eleitl@lemmy.zip 10 hours ago
Abstract
Downsizing metal nanoparticles into nanoclusters and single atoms represents a transformative approach to maximizing atom utilization efficiency for energy applications. Herein, a bovine serum albumin-templated synthetic strategy is developed to fabricate iron and nickel nanoclusters, which are subsequently hydrothermally composited with graphene oxide. Through KOH-catalyzed pyrolysis, the downsized metal nanoclusters and single atoms are embedded in a hierarchically porous protein/graphene-derived carbonaceous aerogel framework. The carbon-supported Fe subnanoclusters (FeSNC) as the negative electrode and Ni subnanoclusters (NiSNC) as the positive electrode exhibit remarkable specific capacitance (capacity) values of 373 F g−1 (93 mAh g−1) and 1125 F g−1 (101 mAh g−1) at 1.0 A g−1, respectively. Assembled into a supercapacitor-battery hybrid configuration, the device achieves an excellent specific energy (47 W h kg−1) and superior specific power (18 kW kg−1), while maintaining outstanding cycling stability of over 12 000 cycles. Moreover, FeSNCs displayed a significantly reduced oxygen evolution overpotential (η10 = 270 mV), outperforming the RuO2 benchmark (η10 = 328 mV). Molecular dynamics simulations, coupled with density functional theory calculations, offer insights into the dynamic behavior and electronic properties of these materials. This work underscores the immense potential of metallic subnanoclusters for advancing next-generation energy storage and conversion technologies.
CptOblivius@lemmy.world 16 hours ago
Two important parts of a battery are how much energy it can store in a certain space and how much it weighs. If it is bigger and holds the same amount of energy that might be ok for a non mobile storage if it costs less, like a house. If it weighs more for a certain energy that wouldn’t be useful for cars and mobile things but might be ok for small things where the weight is negligible anyway. For cars you want a small energy dense battery that is light as possible
whoisearth@lemmy.ca 10 hours ago
About tree fiddy
OrteilGenou@lemmy.world 8 hours ago
Ah said MONSTAH!