An Ultra-Stable, High-Energy and Wide-Temperature-Range Aqueous Alkaline Sodium-Ion Battery with the Microporous C4N/rGO Anode

被引：1

作者：

Mengxiao Li ^{[1
]}

Rui Li ^{[2
]}

Huige Ma ^{[3
]}

Mingsheng Yang ^{[2
]}

Yujie Dai ^{[3
]}

HaiPing Yu ^{[1
]}

Yuxin Hao ^{[2
]}

Zhihui Wang ^{[3
]}

Bei Wang ^{[2
]}

Mingjun Hu ^{[3
]}

Jun Yang ^{[2
]}

机构：

[1] School of Materials Science and Engineering, Beihang University, Beijing

[2] Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing

[3] School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing

[4] ShenSi Lab, Shenzhen Institute for Advanced Study, University of Electronic Science and Technology of China, Shenzhen

来源：

Nano-Micro Letters | 2025年 / 17卷 / 1期

基金：

中国国家自然科学基金;

关键词：

Alkaline antifreeze electrolyte; Aqueous alkaline batteries; Organic anode; Ultra-high cycling stability; Wide temperature range;

D O I：

10.1007/s40820-024-01589-w

中图分类号：

学科分类号：

摘要：

Common anode materials in aqueous alkaline electrolytes, such as cadmium, metal hydrides and zinc, usually suffer from remarkable biotoxicity, high cost, and serious side reactions. To overcome these problems, we develop a conjugated porous polymer (CPP) in-situ grown on reduced graphene oxide (rGO) and Ketjen black (KB), noted as C4N/rGO and C4N/KB respectively, as the alternative anodes. The results show that C4N/rGO electrode delivers a low redox potential (−0.905 V vs. Ag/AgCl), high specific capacity (268.8 mAh g−1 at 0.2 A g−1), ultra-stable and fast sodium ion storage behavior (216 mAh g−1 at 20 A g−1) in 2 M NaOH electrolyte. The assembled C4N/rGO//Ni(OH)2 full battery can cycle stably more than 38,000 cycles. Furthermore, by adding a small amount of antifreeze additive dimethyl sulfoxide (DMSO) to adjust the hydrogen bonding network, the low-temperature performance of the electrolyte (0.1 DMSO/2 M NaOH) is significantly improved while hydrogen evolution is inhibited. Consequently, the C4N/rGO//Ni(OH)2 full cell exhibits an energy density of 147.3 Wh Kg−1 and ultra-high cycling stability over a wide temperature range from −70 to 45 °C. This work provides an ultra-stable high-capacity CPP-based anode and antifreeze electrolyte for aqueous alkaline batteries and will facilitate their practical applications under extreme conditions. (Figure presented.) © The Author(s) 2025.

引用

共 48 条

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