Interfacing Si‐Based Electrodes: Impact of Liquid Electrolyte and Its Components

Advanced Materials Interfaces, vol. 9

Abstract

Abstract As the demand for mobile energy storage devices has steadily increased during the past decades due to the rising popularity of portable electronics as well as the continued implementation of electromobility, energy density has become a crucial metric in the development of modern batteries. It was realized early on that the successful utilization of silicon as negative electrode material in lithium‐ion batteries would be a quantum leap in improving achievable energy densities due to the roughly ten‐fold increase in specific capacity compared to the state‐of‐the‐art graphite material. However, being an alloying type material rather than an intercalation/insertion type, silicon poses numerous obstacles that need to be overcome for its successful implementation as a negative electrode material with the most prominent one being its extreme volume changes on (de‐)lithiation. While, as of today, a plethora of different types of Si‐based electrodes have been reported, a universally common feature is the interface between Si‐based electrode and electrolyte. This review focuses on the knowledge gained thus far on the impact of different liquid electrolyte components/formulations on the interfaces and interphases encountered at Si‐based electrodes.

Authors 6

1. Christian Wölke

   Forschungszentrum Jülich · Helmholtz-Institute Münster

   Affiliation as printed

   Forschungszentrum Jülich GmbH Helmholtz‐Institute Münster (IEK‐12) Corrensstrasse 46 48149 Münster Germany

2. Bahareh Alsadat Sadeghi

   Forschungszentrum Jülich · Helmholtz-Institute Münster

   Affiliation as printed

   Forschungszentrum Jülich GmbH Helmholtz‐Institute Münster (IEK‐12) Corrensstrasse 46 48149 Münster Germany

3. Gebrekidan Gebresilassie Eshetu Aachen Aging Processes and Lifetime Prediction of Batteries Institute for Power Electronics and Electrical Drives (ISEA)

   RWTH Aachen University

   Affiliation as printed

   Aging Processes and Lifetime Prediction of Batteries Institute for Power Electronics and Electrical Drives (ISEA) RWTH Aachen University Jägerstrasse 17‐19 52066 Aachen Germany

4. Egbert Figgemeier Aachen Aging Processes and Lifetime Prediction of Batteries Institute for Power Electronics and Electrical Drives (ISEA)

   Forschungszentrum Jülich · Helmholtz-Institute Münster · RWTH Aachen University

   Affiliation as printed

   Aging Processes and Lifetime Prediction of Batteries Institute for Power Electronics and Electrical Drives (ISEA) RWTH Aachen University Jägerstrasse 17‐19 52066 Aachen Germany

   Forschungszentrum Jülich GmbH Helmholtz‐Institute Münster (IEK‐12) Corrensstrasse 46 48149 Münster Germany

5. Martin Winter

   Forschungszentrum Jülich · University of Münster · Helmholtz-Institute Münster

   Affiliation as printed

   Forschungszentrum Jülich GmbH Helmholtz‐Institute Münster (IEK‐12) Corrensstrasse 46 48149 Münster Germany

   University of Münster MEET Battery Research Center Corrensstrasse 46 48149 Münster Germany

6. Isidora Cekić-Lasković corresponding

   Forschungszentrum Jülich · Helmholtz-Institute Münster

   Affiliation as printed

   Forschungszentrum Jülich GmbH Helmholtz‐Institute Münster (IEK‐12) Corrensstrasse 46 48149 Münster Germany