Its sad that electricity storage is the bugboo in all this, be it transportation or energy for industry and the consumer. Over the years there have been a lot of "promising breakthroughs" but few have made it through to commercial production.
The most promising thing on the horizon right now is the news out of Singapore and NanyangTechnological Uni. They've taken the latest lithium-ion battery and replaced the traditional graphite used for the anode (negative pole) with a new gel material made from titanium dioxide, a readily available, inexpensive, safe component that can be sourced from soil. Heck, its used as a food additive and in sun screen!
The new anode material "promises" a 70% charge in 2 minutes, with a useful life of 20 years/10,000 charge and discharge cycles.
"Promising,"but don't hold your breath. Lets see if it makes it into commercial production at Elon Musk's mega battery factories. Only then will "promising" become reality.
Oh, and so much for the notion that our Chinese friends are good copiers but poor innovators!