High-performance rechargeable aqueous Zn-ion batteries with a poly(benzoquinonyl sulfide) cathode

被引：202
作者：
Dawut, Gulbahar [1 ,2 ]
Lu, Yong [1 ]
Miao, Licheng [1 ]
Chen, Jun [1 ]
机构：
[1] Nankai Univ, Coll Chem, Key Lab Adv Energy Mat Chem, Minist Educ, Tianjin 300071, Peoples R China
[2] Kashgar Univ, Coll Chem & Environm Sci, Xinjiang Lab Native Med & Edible Plant Resources, Kashgar 844006, Peoples R China
来源：
INORGANIC CHEMISTRY FRONTIERS | 2018年 / 5卷 / 06期
关键词：
HIGH-CAPACITY; POLYMER BATTERY; HIGH-ENERGY; INTERCALATION; LI; NANOCOMPOSITE; POLYPYRROLE; GRAPHENE; DENSITY; CARBON;
D O I：
10.1039/c8qi00197a
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
We report high-performance aqueous Zn-ion batteries consisting of a zinc anode, a poly(benzoquinonyl sulfide) (PBQS) cathode, and a 3 M Zn(CF3SO3)(2) aqueous electrolyte. The PBQS cathode displays an initial discharge capacity of 203 mA h g(-1) at 0.1C and a good capacity retention of 86% after 50 cycles at 0.2C. The PBQS cathode can deliver a high reversible capacity of 126 mA h g(-1) at a high rate of 5.0C. Meanwhile, we also studied the redox mechanism during discharge/charge processes by ex situ infrared spectra and theoretical calculations, revealing that reversible bonding of Zn2+ ions with carbonyl oxygen atoms in PBQS occurs in the redox reactions of PBQS molecules. The redox reactions of PBQS molecules can be regarded as the reversible bonding of Zn2+ ions with carbonyl oxygen atoms in PBQS.
引用
收藏
页码：1391 / 1396
页数：6
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