@article{discovery10196763, pages = {9147--9154}, note = {2024 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/).}, journal = {Nano Letters}, number = {30}, year = {2024}, title = {Photothermal Enhancement of Prussian Blue Cathodes for Li-Ion Batteries}, publisher = {AMER CHEMICAL SOC}, volume = {24}, author = {Tan, Lifu and Kim, Byung-Man and Pujari, Arvind and He, Ze and Boruah, Buddha Deka and De Volder, Michael}, abstract = {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.}, url = {http://dx.doi.org/10.1021/acs.nanolett.4c00752}, keywords = {lithium-ion battery, photothermal enhancement, electrochemical impedance spectroscopy, light-enhanced electrochemical reactions, renewable energy technologies, hybrid energy storage, Prussian blue analogues} }