Which type of fuel cell is used in Honda Clarity?
The simple answer: The Honda Clarity’s hydrogen variant uses a Proton Exchange Membrane (PEM) fuel cell stack to generate electricity from hydrogen.
Beyond the quick answer, the Clarity program included several powertrain options, but the hydrogen-powered version is defined by PEM technology. This article explains what PEM means, how it powers the car, and how it fits into Honda’s broader approach to hydrogen mobility.
PEM fuel cell in the Clarity: how it works
In the Clarity Fuel Cell, hydrogen stored on board is fed into a polymer electrolyte membrane that separates protons and electrons, producing electricity to drive the vehicle’s electric motor. The system is designed to work with an on-board battery to smooth power delivery and manage energy during acceleration, deceleration, and cruising. The fuel cell stack operates at relatively low temperatures, enabling quicker startup and operation suitable for everyday driving.
Key details about this configuration are summarized below:
- The fuel cell type: PEM (Proton Exchange Membrane) fuel cell stack.
- Power source and energy flow: Hydrogen from on-board tanks is converted to electricity by the PEM stack, which then powers the electric motor and charges a small battery.
- System integration: Part of Honda's Clarity Fuel Cell platform; designed for relatively quick refueling and longer-range capability compared with many battery-electric vehicles, depending on fueling infrastructure.
- Infrastructure note: Refueling requires hydrogen stations; availability varies by market and can affect practical use.
Conclusion: The PEM fuel cell is central to how the Clarity FCV produces propulsion energy from hydrogen without combustion.
Context and related tech
What PEM means in car applications
PEM stands for Proton Exchange Membrane. PEM fuel cells use a solid polymer electrolyte and operate at modest temperatures (around 80°C), which supports rapid startup and smooth operation for automotive use. They convert chemical energy from hydrogen into electrical energy to drive the vehicle’s electric motor, with water vapor as the primary emission.
Clarity lineup and current status
The Honda Clarity family has included a Fuel Cell Vehicle (FCV), a Plug-in Hybrid (PHEV), and a Battery Electric Vehicle (BEV) variant at different times. The FCV version relies on PEM technology for its energy conversion. In the early 2020s, Honda limited new FCV deliveries in several markets due to hydrogen infrastructure constraints, while pursuing broader hydrogen and fuel-cell initiatives through partnerships and research.
Summary: The Honda Clarity’s hydrogen variant uses a PEM (Proton Exchange Membrane) fuel cell to convert hydrogen into electricity for propulsion. This technology defines the FCV version of the Clarity, even as market and infrastructure factors have influenced its broader availability.
