MIT News July 31, 2023 A team of researchers in the US (MIT, Harvard University) investigated using cement, water, and carbon black as chemical precursors for energy storage. Texture analysis revealed that the hydration reactions of cement in the presence of carbon generates a fractal-like electron-conducting carbon network that permeates the load-bearing cement-based matrix. The energy storage capacity of this space-filling carbon black network of the high specific surface area accessible to charge storage was shown to be an intensive quantity, whereas the high-rate capability of the carbon-cement electrodes exhibited self-similarity due to the hydration porosity available for charge transport. […]
Tag Archives: Supercapacitor
Supercapacitor promises storage, high power and fast charging
Science Daily May 5, 2020 The overall electrochemical performance of the semiconductor heterostructures often depends on the carrier mobility from the semiconductor interfaces and faradaic redox reactions from their active sites. An international team of researchers (Pennsylvania State University, China) has developed low-cost, two-step method to controllably grow MnO2 nanorods directly on CoMn2O4 nanosheets with robust adhesion. An induced electric field resulted from the interface effect of heterostructures tailors the kinetic performance of electrons and ions during the charge-discharge process, enhancing the electron mobility and reducing diffusion barrier for charge carriers (OH−) ions migration. As a result, the rational design […]