title: Potassium Secondary Batteries.
abstract: Potassium may exhibit advantages over lithium or sodium as a charge carrier in rechargeable batteries. Analogues of Prussian blue can provide millions of cyclic voltammetric cycles in aqueous electrolyte. Potassium intercalation chemistry has recently been demonstrated compatible with both graphite and nongraphitic carbons. In addition to potassium-ion batteries, potassium-O2(or -air) and potassium-sulfur batteries are emerging. Additionally, aqueous potassium-ion batteries also exhibit high reversibility and long cycling life. Because of potentially low cost, availability of basic materials, and intriguing electrochemical behaviors, this new class of secondary batteries is attracting much attention. This mini-review summarizes the current status, opportunities, and future challenges of potassium secondary batteries.
authors.affiliation: The Engineering Research Institute, Ulster University , Newtownabbey BT37 OQB, United Kingdom.|School of Chemistry and Chemical Engineering, Queen's University Belfast , Stranmillis Road, Belfast BT9 5AG, United Kingdom.
authors.forename: Ali
authors.initials: A
authors.lastname: Eftekhari
authors.affiliation: Department of Chemistry, Oregon State University , Corvallis, Oregon 97331-4003, United States.
authors.forename: Zelang
authors.initials: Z
authors.lastname: Jian
authors.affiliation: Department of Chemistry, Oregon State University , Corvallis, Oregon 97331-4003, United States.
authors.forename: Xiulei
authors.initials: X
authors.lastname: Ji
keywords: Prussian blue; graphite intercalation compound; potassium-air battery; potassium-ion battery; potassium−sulfur battery