Accelerating charging dynamics in sub-nanometer pores

Having smaller energy density than batteries, supercapacitors have exceptional power density and cyclability. Their energy density can be increased using ionic liquids and electrodes with sub-nanometer pores, but this tends to reduce their power density and compromise the key advantage of supercapacitors. To help address this issue through material optimization, here we unravel the mechanisms of charging sub-nanometer pores with ionic liquids using molecular simulations, navigated by a phenomenological model. We show that charging of ionophilic pores is a diffusive process, often accompanied by overfilling followed by de-filling. In sharp contrast to conventional expectations, charging is fast because ion diffusion during charging can be an order of magnitude faster than in bulk, and charging itself is accelerated by the onset of collective modes. Further acceleration can be achieved using ionophobic pores by eliminating overfilling/de-filling and thus leading to charging behavior qualitatively different from that in conventional, ionophilic pores

A Case Study of the Use of Sandplay Therapy to Help Kids Feel Better about Starting Kindergarten

The purpose of this article is to investigate the efficacy of Sandplay Therapy (SPT) in reducing children’s kindergarten entrance anxiety in an effort to provide front-line preschool teachers with insights and strategies for addressing the emotional distress of children in their first days of nursery school. As a case study, the application of SPT to a 3-year-old boy who struggled with his transition into kindergarten was cited. The differences in his emotions and behaviors before and after six sessions of SPT were evaluated, revealing that the intervention through SPT significantly decreased his anxiety level while increasing his willingness to attend nursery school and that he finally developed a sound adaptation to the school, according to the comments of the observers. Findings showed that SPT could help kids feel less nervous about starting kindergarten and adjust better to new situations