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The document is a contents list for the New Journal of Chemistry, a journal focused on new directions in chemistry. It includes a list of communications and papers featured in the journal's latest issue, covering a range of topics such as the synthesis of specific compounds, analysis of porosity evolution, and the role of certain ions in chemical reactions. The journal is published by The Royal Society of Chemistry and the Centre National de la Recherche Scientifique. This document is a list of papers published in The Royal Society of Chemistry and the Centre National de la Recherche Scientifique journal, New J. Chem., in 2024. The papers cover a range of topics including crystal structures, semiconducting properties, and photocatalysis. The document provides a brief summary of each paper's topic and authors. [Extracted from the article]

For safety concerns, polymer-based Li–O2 batteries have received more attention than traditional non-aqueous Li–O2 batteries. However, poor cycling stability, low round trip efficiency, and over charge potential during cycling are the major shortcomings for their future applications. In this work, a soluble redox mediator integrated into a polymer electrolyte provides immediate access to the solid discharged product, lowering the energy barrier for reversible Li2O2 generation and disintegration. Moreover, introducing a redox mediator to the polymer electrolyte boosts the ORR during discharge and the OER during the recharge process. The synergistic redox mediator pBQ (1,4 benzoquinone) dramatically reduces the over-potential. A small proportion of pBQ in the polymer electrolyte allows Li2O2 to develop in a thin film-like morphology on the cathode surface, resulting in a high reversible capacity of ∼12 000 mA h g−1 and an extended cycling stability of 100 cycles at 200 mA g−1 with a cut-off capacity of 1000 mA h g−1. The remarkable cell performance is attributed to the fast kinetics of para benzoquinone for the ORR and OER in Li–O2 batteries. The use of a redox mediator in a polymer electrolyte opens a new avenue for practical Li–O2 battery applications in achieving low charge potential and excellent energy efficiency. [ABSTRACT FROM AUTHOR]