To immobilize polyethylene glycol-borate ester/lithium fluoride in graphene oxide/poly(vinyl alcohol) for synthesizing new polymer electrolyte membrane of lithium-ion batteries

Abstract

Abstract. Polymer electrolyte membranes (PEMs) are potentially applicable in lithium-ion batteries with high safety, low cost and good performance. Here, to take advantages of ionic conductivity and selectivity of borate ester-functionalized small molecules as well as structural properties of polymer nanocomposite, a strategy of immobilizing as-synthesized polyethylene glycol-borate ester/lithium fluoride (B-PEG/LiF) in graphene oxide/poly(vinyl alcohol) (GO/PVA) to prepare a PEM is put forward. Chemical structure of the PEM is firstly characterized by ), lithium-ion transfer number (~0.49), and thermal (~273°C)/electrochemical (>4 V) stabilities of the PEM can be obtained, and the feasibility of PEMs applied in a lithium-ion battery is also confirmed. It is believed that such PEM is a promising candidate as a new battery separator.

Graphene and Graphene Oxide for Fuel Cell Technology

“…GO has been used with various polymeric membranes to enhance the performance of the fuel cell. Table represents various properties of fuel cells engineered with graphene and polymeric membranes. − …”

Gel Polymer Electrolyte with High Li+ Transference Number Enhancing the Cycling Stability of Lithium Anodes

“…The anions accumulated at the electrode surface would result in the formation of a concentration gradient, which limits the rate charge/discharge capability of the battery . Several strategies have been developed to fabricate single Li + -ion conducting GPEs by immobilizing anions on the polymer skeleton − or adding traps for anions, − but often at the expense of ionic conductivity.…”

Recent Advances in Stability Issues of Inorganic Solid Electrolytes and Composite Solid Electrolytes for All‐Solid‐State Batteries

“…In the light of the ionic conductivity of inorganic fillers, active fillers and passive fillers can be divided. [41] Usually all lithium ion conductive materials are active fillers, while the passive filler mainly includes oxides, mineral material, [42,43] carbon materials, [44] and metal-organic frameworks(MOFs). [45] The two have different mechanisms and properties in assisting the conduction of composite electrolytes.…”