Graphene boosts accuracy in lithium detection, could help make reliable sensors

Researchers at the International Iberian Nanotechnology Laboratory (INL) have demonstrated that integrating graphene into solid-contact lithium-selective electrodes significantly improves lithium detection accuracy and sensor reliability. Graphene’s unique electrical and surface properties—such as high capacitance, hydrophobicity, and minimal potential drift—make it an ideal ion-to-electron transducer. This enhancement addresses longstanding challenges in sensor technology related to precision, durability, and stable voltage readings by preventing water layer formation and ensuring efficient ion signal transmission. The study, published in Microchemical Journal as part of the NGS–New Generation Storage project, highlights graphene-modified electrodes’ superior performance compared to other materials. This advancement supports the development of next-generation potentiometric sensors with exceptional sensitivity, reproducibility, and robustness. Potential applications span healthcare monitoring, energy storage systems, industrial processes, and environmental analysis, where reliable and accurate lithium measurement is critical. Overall, leveraging graphene’s properties paves the way for more dependable and versatile lithium sensors capable of maintaining consistent