Parent Interventions: Vitamin D Deficiency in Middle Childhood Can Cause Aggressive Behavior  |  Technology Inceptions: Flipkart revamps seller onboarding process  |  Technology Inceptions: New range of Nokia Mesh Wi-Fi Router  |  Teacher Insights: Vacation to reduce cardiovascular diseases  |  Science Innovations: Chemo drug with fewer side effects  |  National Edu News: Kala Utsav 2019 Guidelines Released by MHRD  |  Education Information: Chandrayaan-2 Precisely Inserted in Defined Orbit  |  Health Monitor: Fascination for Slimness Has Racial Origins, Not Linked to Health  |  Parent Interventions: Online Brain Games Help in Multi-Tasking at Old Age   |  National Edu News: Intellectual Property Talent Search Exam 2019-20  |  Teacher Insights: Interactive Anatomy Learning Using Virtual Dissection  |  International Edu News: Climate change concern at internship meet  |  National Edu News: Kuwait demands NBA approval of degrees  |  Teacher Insights: Lower returns prompt higher risk-taking  |  Science Innovations: Egg shells help repair bones   |  
  • Pallikkutam Magazine
  • Companion Magazine
  • Mentor
  • Smart Board
  • Pallikkutam Publications

May 24, 2019 Friday 02:24:22 PM IST

IISc Develops Cheaper Method of Producing Hydrogen Gas

Science Innovations

Researchers at Indian Institute of Science (IISC) have developed a low cost catalyst that can help in splitting of water to hydrogen gas.
The team has developed it by combining cobalt oxide with phosphate salts of sodium. It is two-hundred times less expensive than the currently used ruthenium dioxide catalyst. Ruthenium and platinum currently used in catalysts are precious and rare metals.The new catalysts can be used for large scale applications in many devices such as metal-air batteries, fuel cells etc. The team behind the innovation is Prabeer Barpanda, Asst Professor and Ritambhara Gond, PhD students at the Materials Research Centre of IISc. Colloborators in the research were from Jawaharlal Nehru Centre for Advanced Scientific Research.  
When water is split using electricity in the presence of a catalyst, hydrogen atoms receive electrons from one electrode to form hydrogen gas, while at the opposite electrode, oxygen gas is released (Oxygen Evolution Reaction). Researchers have largely focused on speeding up the latter reaction. Catalysts made of platinum or ruthenium metals are the most efficient at this, as they waste the least energy, and reaction rates are higher. Their cost and scarcity, however, hinders their large-scale application.

To develop low-cost alternatives, the IISc team turned to salts called metaphosphates, which have previously been tested for energy storage applications but not for catalysis. The researchers roasted sodium metaphosphate and cobalt oxide in the presence of argon gas in a furnace deprived of oxygen. This created a “sheet” of partially-burnt carbon onto which crystals made of cobalt oxide framed by sodium metaphosphate were spread out.
Source: Indian Institute of Science



Comments