" ... that can be charged and discharged at least 10,000 times — far more cycles than have been previously demonstrated — at a high current density. The researchers paired the new design with a commercial high energy density cathode material.
This battery technology could increase the lifetime of electric vehicles to that of the gasoline cars — 10 to 15 years — without the need to replace the battery."
Don't need 10,000 cycles. 3650 cycles gives you 10 years cycling once per day. If 300 miles per charge, that's 110,000 miles per year, 1 million miles in 10 years. Even that is 5x to total life needed for a more typical car owner who might drive 20,000 miles per year, 200,000 miles during ownership. Just 1000 cycles near 100% DoD would meet their needs, 2000 cycles would cover people who keep cars longer or are 2nd owner and bring the car to 300k or 400k miles.
We're used to having 200 to 400 mile range on a tank. less than that on a charge would be inconvenient, but a small battery drained 80% each way to work and recharged there could be OK. Say someone has an 80 mile commute, 100 mile battery. In that case 500 cycles per year, 12 years would be 6000 cycles to 80% DoD. In that case a 10,000 cycle battery of smaller capacity could be used for lower cost.