Integrated sensor printed on the separator enabling the detection of dissolved manganese ions in battery cell

PALJK, TINA; BRACAMONTE, VICTORIA; SYROVÝ, TOMÁS; TALIAN, SARA DRVARIC; HOCEVAR, SAMO; DOMINKO, ROBERT

Energy Storage Materials

Elsevier

Año: 2022

2405-8297

onventional monitoring of Li-ion battery cell performance is carried out by combining empirical measurement of the extrinsic parameters with multipart modeling and approximation algorithms. A step forward would be enabling more reliable built-in sensing systems that allow collecting direct information, such as a degree of constituting materials degradation. Transition metal dissolution is one of the most severe degradation processes affecting the performance of the whole battery cell. It can be accelerated through different mechanisms, and its monitoring has been a topic of several studies in recent decades. In this work, we establish an approach for unambiguous detection of dissolved manganese ions via the built-in electrochemical sensor with scavenger moieties. We demonstrate that manganese ion-imprinted polymer (Mn(II)-IIP) deposited between two electrodes printed directly on the separator can be used as a sensing layer. The resistance changes of this sensing layer due to the coord