Advancements in Manganese‐Based Cathodes for Aqueous Zinc‐Ion Batteries: Challenges and Optimization Strategies
Zhengchu Zhang, Yongbiao Mu, Li‐Juan Xiao, Xian Yong Wei, Meisheng Han, Chao Yang, Limin Zang, Lin Zeng, Jianhui Qiu
Abstract
ABSTRACT Aqueous zinc‐ion batteries (AZIBs) have emerged as a promising energy storage solution due to their eco‐friendly aqueous electrolytes, high theoretical capacity of zinc anodes, and abundant global zinc reserves. Among the reported cathode materials, manganese‐based cathodes are widely used in AZIBs due to their high theoretical capacity and low cost. However, practical applications of manganese‐based cathodes face several challenges, including structural instability, low electrical conductivity, and slow diffusion kinetics. This review begins by exploring the crystalline structures of manganese‐based compounds commonly used in AZIBs, systematically analyzing their reaction mechanisms. Furthermore, it examines the main challenges currently encountered by manganese‐based compounds in AZIBs. Addressing these challenges, this review summarizes corresponding optimization strategies, providing valuable references and insights for the development and application of manganese‐based cathodes in AZIBs.