Advances of sulfide‐type solid‐state batteries with negative electrodes: Progress and perspectives

Abstract

All-solid-state battery (ASSB) technology is the focus of considerable interest owing to their safety and the fact that their high energy density meets the requirements of emerging battery applications, such as electric vehicles and energy storage systems (ESSs). In light of this, current research on high-energy ASSBs harnesses the benefits of solid-state battery systems by employing anode materials with high energy densities. Owing to the excellent physical safety of solid electrolytes, it is possible to build a battery with high energy density by using high-energy negative electrode materials and decreasing the amount of electrolyte in the battery system. Sulfide-based ASSBs with high ionic conductivity and low physical contact resistance is recently receiving considerable attention. This review provides a summary on various anode materials for ASSBs operating under electrochemically reducing conditions from the perspective of electrochemical and physical safety. The electrochemical and physical properties of sulfide electrolytes used for lithium (Li) metal and particle-type anode materials are presented, as well as strategies for mitigating interfacial failures in solid-state cells through interlayer and electrode design.

Directly Using Li2CO3 as a Lithiophobic Interlayer to Inhibit Li Dendrites for High-Performance Solid-State Batteries

“…Due to the generation of Li x In, will it cause the potential of Li-In-F to be different from that of Li metal? When x = 1, the potential of Li-In alloy is 0.62 V (vs Li + /Li) . According to literature reports, , the potential of Li-In alloy gradually decreases during lithification, and a higher lithium content is likely to approach the potential of lithium metal.…”

“…42 In addition, InF 3 peaks that did not fully react with molten Li were also detected (446.2 and 453.9 eV from In 3d and In 4d of InF 3 (Figure 2f), 40 In alloy is 0.62 V (vs Li + /Li). 43 According to literature reports, 44,45 the potential of Li-In alloy gradually decreases during lithification, and a higher lithium content is likely to approach the potential of lithium metal. When the lithium content reaches 60 atom %, the thermodynamic driving force with redox potentials approaches 0 V (vs Li + /Li).…”

Insights into interfacial physiochemistry in sulfide solid-state batteries: a review

“…These studies have promoted the practical procedure for solid-state batteries by providing possible alternatives to the aforementioned alloy. 142,143,157…”

Progress and Perspective of Controlling Li Dendrites Growth in All‐Solid‐State Li Metal Batteries via External Physical Fields

“…as summarized elsewhere. [20,134] However, it has to be noted that most of these conventional strategies require involving additional material processing steps, introducing new materials, and adding new layers that eventually increase battery cost and complexity, which may hinder the wide deployment of SSLBs. In contrast, using external fields, such as mechanical force, temperature physical field, electric field, pulse current, and even magnetic field to regulate Li dendrites in SSLMBs, seems to be the most cost-effective strategy.…”