There is a recent growing interest in the replacement of batteries by fuel cells for portable consumer electronics, such as cellular phones, laptop computers, digital cameras and so on. This is perhaps partly due to the success of lithium-based batteries in powering laptop computers, cellular phones and the like. The requirement for higher energy density [...]

Polymer electrolyte membrane fuel cells are gaining great attention as a source of power generation for automotive applications. One key requirement for automotive applications is that the fuel cell must be tolerant of frequent start-stop cycling. A new decay mechanism related to local hydrogen starvation, which may be present during start-stop procedures, has been discovered. [...]

Polymer electrolyte membrane fuel cell is the most appropriate power source candidate for the next-generation electric vehicle and small-scale stationary power. In recent years, durability has been one of the most important issues to be solved before the commercialization of PEMFCs. PEMFC performance loss under steady-state and cycling conditions has been attributed to the significant [...]

Boron- and nitrogen-based chemical hydrides are expected to be potential hydrogen carriers for PEM fuel cells, because of their high hydrogen contents. Among them, sodium borohydride (NaBH4, denoted SB) and ammonia borane (NH3BH3, denoted AB) have attracted much attention as promising hydrogen storage materials. There are many similarities between SB and AB in their features [...]