Engineering and Technology

How to speed up ion transport in nanopores

K. Breitsprecher, M. Janssen, et al.

This groundbreaking study conducted by Konrad Breitsprecher, Mathijs Janssen, Pattarachai Srimuk, B. Layla Mehdi, Volker Presser, Christian Holm, and Svyatoslav Kondrat reveals that slow voltage sweeps can significantly enhance the charging efficiency of ultranarrow pores, outperforming abrupt voltage steps and resolving ionic clogging issues. Their innovative approach shows promise for advancing energy storage technologies.

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Abstract

Electrolyte-filled subnanometre pores are crucial in various technologies. However, slow ion transport hinders their efficiency. This study experimentally verifies that a slow voltage sweep charges ultranarrow pores faster than an abrupt voltage step, avoiding ionic clogging. Furthermore, a non-linear voltage sweep is developed and shown to further accelerate charging. For discharging, reversing the potential and sweeping to zero proves faster than short-circuiting. These findings offer significant improvements for energy storage and related applications.

Publisher

Nature Communications

Published On

Nov 30, 2020

Authors

Konrad Breitsprecher, Mathijs Janssen, Pattarachai Srimuk, B. Layla Mehdi, Volker Presser, Christian Holm, Svyatoslav Kondrat

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