An Ultra‑Stable, High‑Energy and Wide‑Temperature‑Range Aqueous Alkaline Sodium‑Ion Battery with the Microporous C_(4)N/ rGO Anode  

作　　者：Mengxiao Li Rui Li Huige Ma Mingsheng Yang Yujie Dai HaiPing Yu Yuxin Hao Zhihui Wang Bei Wang Mingjun Hu Jun Yang 

机构地区：[1]School of Materials Science and Engineering,Beihang University,Beijing 100191,People’s Republic of China [2]Beijing Institute of Nanoenergy and Nanosystems,Chinese Academy of Sciences,Beijing 101400,People’s Republic of China [3]School of Nanoscience and Engineering,University of Chinese Academy of Sciences,Beijing 100049,People’s Republic of China [4]ShenSi Lab,Shenzhen Institute for Advanced Study,University of Electronic Science and Technology of China,Shenzhen 518110,People’s Republic of China

出　　处：《Nano-Micro Letters》2025年第7期160-176,共17页纳微快报(英文版)

基　　金：financial support by the National Natural Science Foundation of China(22371010,21771017 and 51702009);the“Hundred Talents Program”of the Chinese Academy of Science,Fundamental Research Funds for the Central Universities,Shenzhen Science and Technology Program(JCYJ20210324115412035 JCYJ2021-0324123202008,JCYJ20210324122803009 and ZDSYS20210813095534001);Guangdong Basic and Applied Basic Research Foundation(2021A1515110880).

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 C_(4)N/rGO and C_(4)N/KB respectively,as the alternative anodes.The results show that C_(4)N/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 C_(4)N/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 C_(4)N/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℃.This work provides an ultra-stable high-capacity CPPbased anode and antifreeze electrolyte for aqueous alkaline batteries and will facilitate their practical applications under extreme conditions.

关 键 词：Aqueous alkaline batteries Organic anode Ultra-high cycling stability Alkaline antifreeze electrolyte Wide temperature range 

分 类 号：TM911.41[电气工程—电力电子与电力传动]