Efficient decoupled water electrolysis device realized peak shaving and valley filling of electricity
(Image by ZHANG Mo)
Decoupled electrolysis of water is a promising strategy for peak load regulation of electricity. It can store surplus electricity in the valley time and produce hydrogen with low energy consumption in the peak time, relieving the imbalance between the generation and consumption of electricity.
Recently, Prof. DENG Dehui’s group from the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences (CAS) designed an efficient decoupled water device by using a kind of high-performance chainmail catalyst as the electrode.
Their study was published in The Innovation on July 14.
The researchers used the graphene-encapsulated CoNi chainmail catalyst as the electrode and polysulfides as mediators to develop decoupled water device.
The device produced hydrogen with a low potential of 0.82 V at 100 mA/cm2. Compared with the direct electrolysis of water, the potential of hydrogen production was reduced by 1.24 V, saving 60.2% energy in the peak time.
With the efficient catalysis of chainmail catalyst, this device ran stably for 500 h at the current density of 500 mA/cm2, which reached high capacity of 2.5*105 mAh/cm2 for producing hydrogen.
Prof. GUAN Jing’s group from Qingdao University of Technology studied the reaction active by DFT calculations. They revealed that the superiority of chainmail catalyst originated from the modulation of the electronic structure of graphene surface by metal core and nitrogen dopant.
“This work provides a new route to the rational use of electricity in a separate period, which is helpful to construct smart power grids in the practical applications,” said Prof. DENG.
Original Article: Highly-efficient Chainmail Catalysts Developed for Decoupled Water Electrolysis
More from: Dalian Institute of Chemical Physics | Qingdao University of Technology | Chinese Academy of Sciences
The Latest Updates from Bing News & Google News
Go deeper with Bing News on:
Decoupled electrolysis of water
- Green Hydrogen in Transportation: Fueling the Clean Mobility Revolution
Green hydrogen is emerging as a clean fuel for transportation, promising to reduce emissions and revolutionize the energy sector.
- Metal waste becomes catalyst to make hydrogen from water
Since hydrogen production conventionally relies on fossil fuel feedstock, this technology presents “the most promising green pathways for hydrogen production” via electrolysis of water.
- New hydrogen producing method is simpler and safer, researchers say
Developed at KTH Royal Institute of Technology in Stockholm, the new method decouples the standard electrolysis process for producing hydrogen gas, which splits water molecules by applying an ...
- THE POWER OF WATER
One of the key resources now at risk due to rising global temperatures is water supplies around the world and the health and quality of the water meant for drinking. ABC News is taking Earth Month ...
- The Diamond-Water Paradox, Explained
He described this problem in The Wealth of Nations by comparing the high value of a diamond, which is unessential to human life, to the low value of water, without which humans would die.
Go deeper with Google Headlines on:
Decoupled electrolysis of water
[google_news title=”” keyword=”decoupled electrolysis of water” num_posts=”5″ blurb_length=”0″ show_thumb=”left”]
Go deeper with Bing News on:
Water splitting
- 141 mm rain in 72 hours raises Rabindra Sarobar water level, rowers relieved
Heavy rain in Kolkata replenishes water at Rabindra Sarobar, bringing relief to rowers. Rowing course water level increases after 141mm rain in 72 hours. Rowers had faced challenges due to low water ...
- DC Water repairs Northwest water main break; boil water advisory impacting businesses
DC Water said Thursday morning that crews repaired a water main break that prompted a boil water advisory for thousands of customers Wednesday. The advisory went into effect May 8 after DC Water found ...
- Mossyrock water system receives $265,000 in state funds for improvements
Lewis County Water and Sewer System District No. 6, which operates around the greater Mossyrock area, has received $264,500 in state grant and loan funds to improve the system's capacity and ...
- New Study May Reveal Why Venus Has Almost No Water
Electrons in the atmosphere find these ions, and recombine to split the ions in two. In the process, hydrogen atoms zip away and may even escape into space entirely—robbing Venus of one of the two ...
- Crews to close I-12 East at I-10/I-12 split Friday night
Officials in the Town of Killian are sending more water samples to a state lab in Amite as they work to deep clean the town’s only well. The Baton Rouge Police Department is investigating the death of ...
Go deeper with Google Headlines on:
Water splitting
[google_news title=”” keyword=”water splitting” num_posts=”5″ blurb_length=”0″ show_thumb=”left”]