London's first fully electric buses to be introduced on two routes will include USB ports so commuters can charge their mobile phones.
Each will feature USB sockets on 12 chairs and screens with updates on London overground and tube transport, as well as information about bus stops to come.
Mr Khan said: "It’s vital that we act now to clean-up our capital’s toxic air and do everything we can to help prevent the thousands of deaths it causes each year.
"I’ve set out a comprehensive plan to improve our air, and the transformation of London’s bus fleet will play a key role in making our transport cleaner and heathier."
Nine of the 51 new buses, which will eliminate nitrogen oxide emissions and reduce carbon dioxide emissions by 40%, were unveiled at Waterloo bus garage this week (September 12) and will become Europe's largest collection of electric buses.
The fleet is the first step towards all 300 central London single deck buses becoming zero emissions by 2020, part of City Hall's series of proposed crackdowns to tackle air pollution .
Transport for London ’s managing director of surface transport, Leon Daniels, said: "These are the first two electric routes that travel through the heart of the capital.
"They will mean better air quality and better journeys for customers – with less noise and vibration than traditional buses.
"Today is a real game-changer in the drive to green the capital’s transport network."
London currently has around 2,000 hybrid electric buses.