Ce(III)‐Based Coordination‐Complex‐Based Efficient Radical Scavenger for Exceptional Durability Enhancement of Polymer Application in Proton‐Exchange Membrane Fuel Cells and Organic Photovoltaics

Abstract

To ensure a sustainable future, a tremendous range of energy conversion and storage devices including fuel cells, photovoltaics, and electrolyzers, has been developed in recent decades for the eco-friendly production and consumption of energy, without increasing CO 2 emissions. [1] The main concern about those devices for practical realization is maximizing the overall lifetime of their operation, which is largely affected by the durability of device-configuring materials under the specific operation condition for each device. In particular, soft polymeric materials are some of the key materials in those devices and are widely applied as active sites for energy conversion, charge carrier transporting media, material transporting media, etc. However, degradation of those polymeric materials in the device inevitably occurs during device operation in physical and chemical manner. [2] To be more

Crystallinity-modulated hollow CeO2−x nanorods as free radical scavengers for long-term photostability in organic photovoltaics

“…It has been well known that the Ce 3+ state is an active species for ˙OH radical scavenging. 32–37 However, while the CeO 2− x S-hNRs possessed the lowest surface concentration of Ce 3+ species, they showed radical scavenging efficiency that was comparable to the CeO 2− x P-hNRs. Therefore, the superior ˙OH radical scavenging performances of CeO 2− x S-hNR and CeO 2− x P-hNR are mainly due to their high surface area.…”