GB/T 42847.2-2023

This standard specifies test procedures for evaluating the performance of proton exchange membrane fuel cells and stacks operating in reversible mode, where the same device can function both as a fuel cell (generating electricity) and as an electrolyzer (producing hydrogen). It is applied in the energy storage industry, specifically for testing single cells and stacks used in reversible fuel cell systems that enable grid-scale energy storage and load balancing. The procedures cover key performance metrics such as voltage-current characteristics, efficiency, and durability under both power generation and hydrogen production conditions.