This is the accepted version of the following article: Lima G., Dubal D.P., Rueda-García D., Gómez-Romero P., Huguenin F.. Energy harvesting from neutralization reactions with saline feedback. Electrochimica Acta, (2018). 275. : 145 - . 10.1016/j.electacta.2018.04.075, which has been published in final form at https://dx.doi.org/10.1016/j.electacta.2018.04.075 © https://dx.doi.org/10.1016/j.electacta.2018.04.075. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/