Sustainable Dual‐Ion Batteries beyond Li

Abstract

The limitations of resources used in current Li‐ion batteries render them unsuitable for grid energy storage systems, prompting the search for low‐cost and resource‐abundant alternatives. “Beyond‐Li cation” batteries have emerged as promising contenders; however, they confront noteworthy challenges due to the scarcity of suitable host materials for these cations. In contrast, anions, the other crucial component in electrolytes, demonstrate reversible intercalation capacity in specific materials like graphite. The convergence of anion and cation storage has given rise to a new battery technology known as dual‐ion batteries (DIBs). This comprehensive review presents the current status, advancements, and future prospects of sustainable DIBs beyond Li. Notably, most DIBs exhibit similar cathode reaction mechanisms involving anion intercalation, while the distinguishing factor lies in the cation types functioning at the anode. Accordingly, this review is organized into sections by various cation types, including Na‐, K‐, Mg‐, Zn‐, Ca‐, Al‐, NH4+‐, and proton‐based DIBs. Moreover, a perspective on these novel DIBs is presented, along with proposed protocols for investigating DIBs and promising future research directions. We envision that this review will inspire fresh concepts, ideas, and research directions, while raising important questions to further tailor and understand sustainable DIBs, ultimately facilitating their practical realization.This article is protected by copyright. All rights reserved

Superhalide-Anion-Motivator Reforming-Enabled Bipolar Manipulation toward Longevous Energy-Type Zn||Chalcogen Batteries

“…Additionally, in previous studies, chalcogen oxidation conversion in Al-based IL electrolytes (EMImCl:AlCl 3 ) also generally faces similar poor cyclability caused by severe shuttle effect or intermediate decomposition. − It is believed that the superhalide anion species play crucial roles in mediating chalcogen conversion products and battery lifespan. − Besides, battery performance degradation related to anode dendrite growth in IL electrolytes seems to be underestimated, as well. Thus, manipulating superhalide anion species in IL electrolytes could be sensible yet relevant studies remain absent so far. − …”