A novel long-side-chain sulfonated poly(2,6-dimethyl-1,4-phenylene oxide) membrane for vanadium redox flow battery
A novel long-side-chain sulfonated poly(2,6-dimethyl-1,4-phenylene oxide) membrane for vanadium redox flow battery
复制标题
一种用于钒氧化还原液流电池的新型长侧链磺化聚(2,6-二甲基-1,4-苯醚)膜
DOI：
10.1016/j.ijhydene.2017.10.143
复制
发表时间：
2018-01
影响因子：
7.2
通讯作者：
He Gaohong
中科院分区：
文献类型：
--
作者：
Yan Xiaoming;Sun Jiahui;Gao Li;Zheng Wenji;Dai Yan;Ruan Xuehua;He Gaohong
制备了一种新型的长侧链磺化聚（2，6-二甲基-1，4-苯醚）（S-L-PPO）膜用于VRFB。长侧链通过简单可控的对氟苯甲酰氯酰化反应和随后的对羟基苯磺酸钠缩合反应引入到PPO主链上。长侧链的引入驱动形成良好的亲水/疏水微相分离结构，这是由AFM证实。磺化度（DS）为51%的S-L-PPO膜表现出超低的钒渗透率（4.3 × 10− 9 cm 2s −1）和良好的质子传导率（44 mS cm−1）。结果，在120 mA cm-2的电流密度下，具有S-L-PPO-51%膜的VRFB的能量效率高达81.8%，高于具有Nafion 212的能量效率（78.0%）。S-L-PPO-51%膜电池的自放电持续时间为222 h，是Nafion 212膜电池（23 h）的9倍。这表明该膜在VRFB中具有良好的应用前景。
A novel long-side-chain sulfonated poly(2,6-dimethyl-1,4-phenylene oxide) (S-L-PPO) membrane was successfully prepared for VRFB applications. The long side chains were introduced onto the PPO backbones by a simple and controllable acylation with 4-fluorobenzoyl chloride and a subsequent condensation with sodium 4-hydroxybenzenesulfonate. The introduction of long side chains drives the formation of a good hydrophilic/hydrophobic micro-phase separation structure, which is evidenced by AFM. The S-L-PPO membrane with a degree of sulfonation (DS) of 51% showed an ultralow vanadium permeability (4.3 × 10−9cm2s−1) and a decent proton conductivity (44 mS cm−1). As a result, the energy efficiency of VRFB with S-L-PPO-51% membrane was up to 81.8% that was higher than that with Nafion 212 (78.0%) at a current density of 120 mA cm−2. In addition, the self-discharge duration of the cell with S-L-PPO-51% membrane was 222 h that was nine times longer than that of Nafion 212 (23 h). All these indicate that the membrane prepared here is promising for the application in VRFB.
登录
查看更多内容
影响因子：
9.2
作者：
Bibo Yin;Zhaohua Li;Wenjing Dai;Lei Wang;Lihong Yu;Jingyu Xi
通讯作者：
Bibo Yin;Zhaohua Li;Wenjing Dai;Lei Wang;Lihong Yu;Jingyu Xi
影响因子：
9.5
作者：
Suminto Winardi;S. Raghu;M. O. Oo;Q. Yan;N. Wai;T. Lim;T. Lim;M. Skyllas-Kazacos
通讯作者：
Suminto Winardi;S. Raghu;M. O. Oo;Q. Yan;N. Wai;T. Lim;T. Lim;M. Skyllas-Kazacos
影响因子：
9.2
作者：
Hongzhang Zhang;Huamin Zhang;Xianfeng Li;Z. Mai;Wenping Wei;Yun Li
通讯作者：
Hongzhang Zhang;Huamin Zhang;Xianfeng Li;Z. Mai;Wenping Wei;Yun Li
影响因子：
--
作者：
Sun Yang;Yeonho Ahn;Dukjoon Kim
通讯作者：
Sun Yang;Yeonho Ahn;Dukjoon Kim
影响因子：
4.6
作者：
J. Ran;Liang Wu;Yanfei Ru;Min Hu;Liang Din;T. Xu
通讯作者：
J. Ran;Liang Wu;Yanfei Ru;Min Hu;Liang Din;T. Xu