You can charge your AirPods with Apple's wireless charging mat if you have the Qi-equipped charging case. Little is known about the new case at this time, but it will work with the first-generation AirPods. The case will be sold as a separate accessory just like the current AirPods charging case. Pricing is unknown at this time.
The AirPower mat can charge up to three devices at one time. This includes the AirPods charging case, the iPhone X, iPhone 8, iPhone 8 Plus, and the Apple Watch Series 3. The AirPower mat will be sold as a separate accessory starting sometime in 2018.