%0 Journal Article %T Toward Highly Reliable Potassium‐Ion Half and Full Coin Cells %+ Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM) %A Larhrib, Badre %A Madec, Lénaïc %< avec comité de lecture %J Batteries & Supercaps %I Wiley %V 6 %P e202300061. %8 2023 %D 2023 %R 10.1002/batt.202300061 %K graphite %K half-cells %K KVPO4F0.5O0.5 %K parameters optimization %K full cells %Z Chemical Sciences %Z Chemical Sciences/Material chemistryJournal articles %X To develop high energy and high-power potassium-ion batteries (KIBs), performance need to be evaluated in full-cells instead of half-cells based on the highly reactive K metal that leads to misinterpretation of the results. However, assembling KIBs full-cells is not trivial as many parameters are critical to the obtained performance. This work demonstrates approaches to assemble reliable K-ion full-cells using graphite and KVPO4F0.5O0.5 based electrodes. First, the optimal separators choice/number and electrolyte choice/volume are determined in half-cells then the optimal electrolyte volume is determined in full-cells. Importantly, the electrolyte volume should be fixed to about 4 times the porosity volume for both half- and full-cells. Then, using 3-electrodes cells, the optimal negative/positive (N/P) diameter ratio then the optimal N/P capacity ratio are determined to be 1.16±0.2. Finally, these approaches allow assembling KVPFO//graphite coin-cells with an energy density of about 47 Wh kgdevice−1 using a high N/P loading ratio of 4/10 (in mgactive-material cm−2). Overall, this work can be used as a guide to assemble any KIBs full-cell system and thus paves the way to the determine the best negative/positive materials combination in order to develop efficient KIBs. %G English %2 https://univ-pau.hal.science/hal-04079044/document %2 https://univ-pau.hal.science/hal-04079044/file/Full%20cells%20assembly%20-%20Manuscript%20accepted%20article.pdf %L hal-04079044 %U https://univ-pau.hal.science/hal-04079044 %~ CNRS %~ UNIV-PAU %~ IPREM %~ INC-CNRS %~ UPPA-OA