%0 Journal Article %A Tan, Lifu %A Kim, Byung-Man %A Pujari, Arvind %A He, Ze %A Boruah, Buddha Deka %A De Volder, Michael %D 2024 %F discovery:10196763 %I AMER CHEMICAL SOC %J Nano Letters %K lithium-ion battery, photothermal enhancement, electrochemical impedance spectroscopy, light-enhanced electrochemical reactions, renewable energy technologies, hybrid energy storage, Prussian blue analogues %N 30 %P 9147-9154 %T Photothermal Enhancement of Prussian Blue Cathodes for Li-Ion Batteries %U https://discovery.ucl.ac.uk/id/eprint/10196763/ %V 24 %X Photoenhanced batteries, where light improves the electrochemical performance of batteries, have gained much interest. Recent reports suggest that light-to-heat conversion can also play an important role. In this work, we study Prussian blue analogues (PBAs), which are known to have a high photothermal heating efficiency and can be used as cathodes for Li-ion batteries. PBAs were synthesized directly on a carbon collector electrode and tested under different thermally controlled conditions to show the effect of photothermal heating on battery performance. Our PBA electrodes reach temperatures that are 14% higher than reference electrodes using a blue LED, and a capacity enhancement of 38% was achieved at a current density of 1600 mA g-1. Additionally, these batteries show excellent cycling stability with a capacity retention of 96.6% in dark conditions and 94.8% in light over 100 cycles. Overall, this work shows new insights into the effects leading to improved battery performance in photobatteries. %Z 2024 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/).