On July 15th, in the laboratory of the Australian National University in Canberra, Australia, Dr. Heping Shen holds a photochemical cell device. Xinhua News Agency
Researchers from the Australian National University have announced that they have set a new record for the conversion efficiency of solar hydrogen production and have found a low-cost hydrogen production method.
The Australian National University issued a communiqué on its official website a few days ago, stating that the project is co-led by Dr. Siva Karuturi and Dr. Shen Heping. Related research results have been published in the US "Advanced Energy Materials" magazine. The paper pointed out that the new research has achieved an "unprecedented" 17.6% of the conversion efficiency of solar hydrogen production through low-cost semiconductor materials.
Karuturi said in the communiqué that compared with the traditional hydrogen production method, the new method avoids the energy loss caused by multiple conversions of direct current and alternating current and the loss in the process of power transmission. At the same time, it does not require a large number of additional facilities and has a significant cost. Advantage.
"In the past, solar power plants had to produce electricity and then use it to electrolyze water to produce hydrogen. This new method is more direct and efficient." Karuturi said.
According to reports, the research team used a "stacked" light absorber structure to place the perovskite battery on top of a special silicon electrode. Shen Heping said that perovskite materials have extraordinary optoelectronic properties and provide great potential for the production of low-cost, high-efficiency silicon laminated devices.
"With the unprecedented increase in the efficiency of perovskite cells, the stability of perovskite materials has also been significantly improved, making it one of the most attractive candidates for the solar industry." Shen Heping told Xinhua News Agency reporters on the 29th.
The communiqué stated that the research team is working to increase the conversion efficiency of 17.6% to 20% in the next few months, paving the way for low-cost green hydrogen production. The research team is exploring how to use cheaper materials to replace the platinum and other precious metal catalysts used in this study to further reduce costs. (Reporter Yue Dongxing Bai Xu)
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