Poly(maleic anhydride) copolymers‐based polymer electrolytes enlighten highly safe and high‐energy‐density lithium metal batteries: Advances and prospects

Abstract

Polymer electrolytes‐based lithium metal batteries have attracted much more attention for next‐generation energy storage devices owing to their high energy density and superior safety characteristics. However, there are still some obstacles to ameliorate interfacial compatibility between conventional polymer electrolytes with lithium metal anode and high‐voltage cathodes. It is noted that poly (maleic anhydride) copolymers (PMAC)‐based polymer electrolytes (PEs) exhibit superior interfacial compatibility with both lithium metal anode and high‐voltage cathodes in virtue of their distinctive structure. These superb characteristics will endow PMAC‐based PEs very promising candidate to develop highly safe and high‐energy‐density lithium metal batteries. So far, PMAC‐based PEs have been widely used in lithium metal batteries and high‐voltage lithium metal batteries because of their prominent advantages. Herein, recent key advances of PMAC‐based PEs are summarized. The key factors affecting ionic conductivity are elaborated in terms of structural control of PMAC, lithium salts, fillers, and plasticizers. Moreover, the interfacial compatibility of PMAC‐based PEs with lithium metal anode and high‐voltage cathodes is also discussed in details. Furthermore, potential challenges and prospects of PMAC‐based PEs are also envisioned at the end of this review. It is believed that this review will shed light on highly safe and high‐energy‐density lithium metal batteries.

A Review of Polymer‐based Solid‐State Electrolytes for Lithium‐Metal Batteries: Structure, Kinetic, Interface Stability, and Application

“…MA promotes the synthesis of poly(maleic anhydride)‐copolymer, through the free radical polymer. Then, it can act as graft sites for amidation and esterification reactions to design anhydride polymers with different side chains [19,71] . Especially, polymethyl methacrylate (PMMA) regulation is a suitable polymer‐based solid electrolyte for the adverse reaction of the lithium‐mental electrode and with a higher lithium ion migration number [72,73] .…”

“…4) Safety: suppression of dendrites and thermal runaways. [14,15] Here, several polymer electrolyte materials, such as polyethylene oxide (PEO), [16] polyacrylonitrile (PAN), [17] polyvinylidene fluoride (PVDF), [18] and poly(maleic anhydride) (PMMA), [19] were selected to elaborate the connection between electrolyte structures and intrinsic properties. Meanwhile, the corresponding optimization strategies for SPEs with different structures were systematically summarized to boost their application in ASSBs (Table 1).…”

“…Then, it can act as graft sites for amidation and esterification reactions to design anhydride polymers with different side chains. [19,71] Especially, polymethyl methacrylate (PMMA) regulation is a suitable polymer-based solid electrolyte for the adverse reaction of the lithium-mental electrode and with a higher lithium ion migration number. [72,73] For PMMA regulation, Zhou et al integrated PMMA and polyvinylidene fluoride PVDF into an artificial SEI as a solid electrolyte membrane.…”

Polymer electrolytes for Li-S batteries: Polymeric fundamentals and performance optimization

“…Various inorganic oxides have been applied as inert fillers for PEO-based electrolytes, such as, Al 2 O 3 [27,60,61] and Ti n O 2nÀ1 (n = 1, 2) [28]. Oxide nanoparticles acts as the role of a Lewis acid can associate with oxygen atoms in PEO chains, which reduces crystallization of the PEO and weakens interaction between the polymer and Li ions, thus, leading to the improvement of ionic conductivity [62]. For one study, Liang and co-workers [29] employed SiO 2 as filler to prepared Li-S batteries showed excellent cycling performance with a reversible discharge capacity of about 800 mAh g À1 after 25 cycles.…”

High-Mass-Loading Anode-Free Lithium–Sulfur Batteries Enabled by a Binary Binder with Fast Lithium-Ion Transport

“…Specifically, the lithophilic environment generated by abundant electron-rich groups in MHPP promotes the ionization of lithium salts, leading to an increased carrier concentration . In addition, the steric effect of MAH and HFBMA hinders the crystallization of the PEO matrix, thereby increasing the amorphous regions for better ion conduction . Furthermore, the high mobility of PEGMA and PEGDA accelerates the movement of Li + ions along their repeated EO units .…”