Patents Reveal Apple’s Fuel Cell Research

Two patent applications published this week by the US Patent and Trademark office (USPTO) have revealed details of Apple’s internal development of fuel cells to power portable electronic devices.

The applications were first filed in 2010 and demonstrate a new concept designed by Apple for hydrogen fuel cells which should make them cheaper and lighter to produce.

Green Apple

Fuel cells create electrical power by converting a fuel such as hydrogen into an electric current, but cells produce low voltages ranging between 0.5 and 0.7 volts which means that multiple fuel cells must be arranged in a stack. However a stack’s reliability decreases as its size increases, while the necessity to use a conductive and corrosion-resistant metal such as stainless steel means that they can make a device which is too heavy to have any practical use.

The patents filed by Apple hope to rectify these faults by improving the reliability and reducing the weight of the cells but would still be even more powerful than a traditional stack of the same size.

The first patent application, “Parallel Fuel Stack Architecture”, details how Apple would arrange a stack of fuel cells in a parallel configuration which would increase its reliability and provide the ability to power devices with higher voltages.

The second, called “Reduced-Weight Fuel Cell Plate”, outlines plans to reduce the weight of the stack by configuring the fuel cells so that they can share electrodes and allow for the use of lighter and thinner monopolar plates.

Most of Apple’s devices are currently powered by lithium-ion polymer batteries, but Apple is committed to investigating the use of alternative energy sources such as solar power and fuel cells to make its devices more environmentally friendly.

This commitment extends to the construction of its new headquarters in Cupertino, California, which will have several green features. However questions remain over the energy efficiency of the company’s  iCloud service, which is powered by a data centre whose 2.28Mw power commitment makes it one of the biggest in the USA.

Steve McCaskill

Steve McCaskill is editor of TechWeekEurope and ChannelBiz. He joined as a reporter in 2011 and covers all areas of IT, with a particular interest in telecommunications, mobile and networking, along with sports technology.

Recent Posts

X’s Community Notes Fails To Stem US Election Misinformation – Report

Hate speech non-profit that defeated Elon Musk's lawsuit, warns X's Community Notes is failing to…

1 day ago

Google Fined More Than World’s GDP By Russia

Good luck. Russia demands Google pay a fine worth more than the world's total GDP,…

1 day ago

Spotify, Paramount Sign Up To Use Google Cloud ARM Chips

Google Cloud signs up Spotify, Paramount Global as early customers of its first ARM-based cloud…

2 days ago

Meta Warns Of Accelerating AI Infrastructure Costs

Facebook parent Meta warns of 'significant acceleration' in expenditures on AI infrastructure as revenue, profits…

2 days ago

AI Helps Boost Microsoft Cloud Revenues By 33 Percent

Microsoft says Azure cloud revenues up 33 percent for September quarter as capital expenditures surge…

2 days ago