Meetings and individual work during the workday: Examining their interdependent impact on knowledge workers' energy.

An important issue that has received little attention to date is how different types of work activities may interplay to influence workday energy, a critical resource for individuals' performance at work. Integrating the notion of workday design with event system theory, we examine two prominent types of work activities for knowledge workers-meetings and individual work-to investigate how time allocation and pressure complementarity between them influence workday energy. We conducted two experience sampling studies, one with 245 knowledge workers from diverse organizations and the other with 167 employees from two technology companies. We found a time allocation effect, such that for a given period of the workday (i.e., the morning or the afternoon), the greater the proportion of time a knowledge worker spent in meetings relative to individual work, the less this person engaged in microbreak activities for replenishment during that period. The reduction in microbreak activities, in turn, harmed energy. We also found a pressure complementarity effect in the morning (though not in the afternoon), such that when a meeting involved low pressure in the presence of high-pressure individual work or vice versa, when a meeting involved high pressure in the presence of low-pressure individual work, such complementarity benefited energy. Overall, this research advances our understanding of how everyday work activities relate to knowledge workers' energy and sheds new light on the issue of work and workday designs. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Mesoporous Pt@Pt-skin Pt3Ni core-shell framework nanowire electrocatalyst for efficient oxygen reduction.

The design of Pt-based nanoarchitectures with controllable compositions and morphologies is necessary to enhance their electrocatalytic activity. Herein, we report a rational design and synthesis of anisotropic mesoporous Pt@Pt-skin Pt3Ni core-shell framework nanowires for high-efficient electrocatalysis. The catalyst has a uniform core-shell structure with an ultrathin atomic-jagged Pt nanowire core and a mesoporous Pt-skin Pt3Ni framework shell, possessing high electrocatalytic activity, stability and Pt utilisation efficiency. For the oxygen reduction reaction, the anisotropic mesoporous Pt@Pt-skin Pt3Ni core-shell framework nanowires demonstrated exceptional mass and specific activities of 6.69 A/mgpt and 8.42 mA/cm2 (at 0.9 V versus reversible hydrogen electrode), and the catalyst exhibited high stability with negligible activity decay after 50,000 cycles. The mesoporous Pt@Pt-skin Pt3Ni core-shell framework nanowire configuration combines the advantages of three-dimensional open mesopore molecular accessibility and compressive Pt-skin surface strains, which results in more catalytically active sites and weakened chemisorption of oxygenated species, thus boosting its catalytic activity and stability towards electrocatalysis.