Researchers at Southeast University have made a breakthrough by developing a new type of concrete capable of both generating and storing electricity. This innovation has the potential to transform cement—traditionally a major source of carbon emissions—into a green energy carrier.
Source: Xinhua News Agency
Researchers at Southeast University have made a breakthrough by developing a new type of concrete capable of both generating and storing electricity. This innovation has the potential to transform cement—traditionally a major source of carbon emissions—into a green energy carrier.
Buildings account for approximately 45% of China’s total energy consumption and over 50% of its carbon emissions. In response to the construction sector’s energy challenges, a research team led by Academician Miao Changwen from the Chinese Academy of Engineering developed two cement-based materials, known as N-type and P-type thermoelectric cement, alongside a cement-based supercapacitor for energy storage.
Laboratory tests demonstrate remarkable improvements compared to conventional cement-based materials: The Seebeck coefficient of the N-type cement—an important measure of thermoelectric performance—is ten times higher than that of traditional materials. The P-type cement’s power factor is 51 times greater, and its thermoelectric conversion efficiency (ZT value) is 42 times higher.
Beyond power generation, the team developed energy-storing wall panels made from magnesium phosphate cement. These panels can store enough electricity to power a typical household for an entire day. When integrated with photovoltaic systems, they increase solar energy utilization by over 30% and reduce electricity costs by more than 50%.
“This technology offers a promising solution to reduce the carbon footprint of buildings while improving energy efficiency,” said Professor Miao Changwen. “Self-generating and self-storing concrete could significantly decrease buildings’ dependence on external power grids, paving the way for cleaner, smarter infrastructure.”The research marks a significant step toward low-carbon transformation in the construction and transportation sectors, demonstrating how innovative materials can contribute to sustainable development.
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