Acidified Nitrogen Self‐Doped Porous Carbon with Superprotonic Conduction for Applications in Solid‐State Proton Battery
Feng‐Jia Zhao, Yun Zhu, Ying Chen, Xing‐Yu Ren, Xing‐Yu Ren, Hao Dong, Han Zhang, Qiu Ren, Hong‐Bin Luo, Yang Zou, Xiao‐Ming Ren, Xiao‐Ming Ren
Abstract
Abstract Solid proton electrolytes play a crucial role in various electrochemical energy storage and conversion devices. However, the development of fast proton conducting solid proton electrolytes at ambient conditions remains a significant challenge. In this study, a novel acidified nitrogen self‐doped porous carbon material is presented that demonstrates exceptional superprotonic conduction for applications in solid‐state proton battery. The material, designated as MSA@ZIF‐8‐C, is synthesized through the acidification of nitrogen‐doped porous carbon, specifically by integrating methanesulfonic acid (MSA) into zeolitic imidazolate framework‐derived nitrogen self‐doped porous carbons (ZIF‐8‐C). This study reveals that MSA@ZIF‐8‐C achieves a record‐high proton conductivity beyond 10 −2 S cm −1 at ambient condition, along with good long‐term stability, positioning it as a cutting‐edge alternative solid proton electrolyte to the default aqueous H 2 SO 4 electrolyte in proton batteries.