English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The concentration of solute in a NaBH4 solution is limited due to the low solubility of NaBO2. The performance of a hydrogen generation system was evaluated using various concentrations of NaBH4 solution. First, a self-hydrolysis test and a hydrogen generation test for 30 min were performed. The composition of NaBH4 solution was selected to be 1 wt% NaOH + 25 wt% NaBH4 + 74 wt% H2O by considering the amount of hydrogen loss, stability of hydrogen generation, NaBO2 precipitation, conversion efficiency, and the purpose of its application. A hydrogen generation system for a 200 W fuel cell was evaluated for 3 h. Although hydrogen generation rate decreased with time due to NaBO2 precipitation, hydrogen was produced for 3 h (conversion efficiency: 87.4%). The energy density of the 200 W fuel cell system was 263 Wh/kg. A small unmanned aerial vehicle with this fuel cell system can achieve 1.5 times longer flight time than one flying on batteries.

Performance Evaluation of Hydrogen Generation System using NaBH4 Hydrolysis for 200 W Fuel Cell Powered UAV

Performance Evaluation of Hydrogen Generation System using NaBH₄ Hydrolysis for 200 W Fuel Cell Powered UAV