Qi isn't the standard...... It's probably most widely used but there are still competing technologies in the wireless charging world..
"What both parties get, though, is a leg up on Qi. Originally, the Wireless Power Consortium's Qi standard was the front-runner in wireless charging — attracting device manufacturers like HTC, LG, and Samsung to build phones and tablets with the tech — but over the past couple years the PMA and A4WP have attracted a host of supporters, including Intel, AT&T, Starbucks, McDonalds (via PowerKiss), and The Coffee Bean and Tea Leaf. Qualcomm and Samsung have been playing the field, presumably hedging their bets, but both are founding members of the A4WP. WiTricity, the MIT spinoff that invented resonant wireless charging, is now an A4WP member as well."
You now have
Rezence™ Wireless Power, Wireless Charging Standard | A4WP The A4WP technology and
Wireless Power Consortium – creating a standard for wireless charging which is your Qi (Which is what Google backs and pushes)