Politics Forum
|
List All Forums | About |
![]() ![]() Section 16: EV Issues Subject: New Battery Msg# 1231823
|
||||||
Jim (& ALL)
The trouble with reports based on new experimental technologies is their tendency to omit any drawbacks and problems being faced, before they can be put into mass production. And it can take efforts to read a bunch of sources to find some balanced versions. Yet its possible. Here's some comments from a more critical analysis of the graphene batteries for EVs. Click Here << "A graphene battery uses a material called graphene in its electrodes. To step back further, graphene is a form of carbon. Graphene is a sheet of carbon that is only one atom thick. When stacked up, these sheets of graphene form graphite, which most people recognize as the stuff in pencils." << "Graphene Is Hard To Make And Work With: << "A few other graphene-making processes have been developed, but none are ready for use in a factory. Furthermore, graphite is very delicate when spread thinly. (Imagine writing something in pencil and then trying to lift the lettering off of the page intact.) Graphene is literally as thin as graphite gets (since it’s one atom thick)." << "If Graphene Batteries Become Available, It Will Take A Long Time << "While scientists may successfully make one or two prototype batteries, one can’t simply scale up their method in the same way one would double the ingredients in a cookie recipe." << "At present, graphene shows a lot of promise. Whether it lives up to its own hype remains to be seen." And lets consider the common sense of evaluating drawbacks. Recall how critics of adopting EV power for military tanks have pointed out the common sense argument that recharging of tanks on the battle field is virtually impossible. Seems there's a long road ahead before the drawbacks of graphene battery technology will be resolved, and become viable for its mass production. Success is not assured. |
||||||
|
||||||
For reference, the above message is a reply to a message where: China built a graphene-based battery that charges in 5 minutes — and lasts 4 times longer than lithium In a major leap for energy storage, Chinese scientists have unveiled a graphene-supercapacitor hybrid battery that charges in under 5 minutes and lasts over 10,000 cycles — far outperforming conventional lithium-ion batteries in both speed and lifespan. The team, based at Tsinghua University, says the battery could revolutionize electric vehicles, smartphones, and grid storage. At the core is a graphene-laced anode and carbon nanotube cathode, which allows for incredibly fast ion movement without degrading the structure. Unlike lithium batteries, which rely on slow chemical reactions and fragile materials, this battery is based on physical ion transport, which is faster, cooler, and safer. It doesn't swell, leak, or overheat under stress. In lab tests, the battery recharged to 80% in just 3.2 minutes — enough for an EV to gain 300+ km of range in a coffee break. And after 12,000 full charge cycles, it retained over 90% of its capacity. Traditional lithium cells degrade below 70% in half that time. The graphene hybrid not only charges faster but lasts four times longer, significantly reducing battery waste. The battery can also operate in extreme temperatures — from -30°C to 60°C — making it ideal for aerospace, military, or off-grid use. It’s built without rare-earth metals or cobalt, slashing environmental and ethical concerns in supply chains. China’s EV companies are already integrating prototypes into two-wheeler scooters and drones. A Tesla-sized EV battery using this tech could fully recharge in 8 minutes — a game-changing upgrade for transport, logistics, and emergency infrastructure. |