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Stable High-Voltage Aqueous Zinc Battery Based on Carbon-Coated NaVPO4F Cathode
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-02-11 , DOI: 10.1021/acssuschemeng.0c08651 Duan Bin 1, 2 , Yanrong Wang 2 , Andebet Gedamu Tamirat 3 , Peng Zhu 1 , Beibei Yang 1 , Jin Wang 1 , Jianhang Huang 2 , Yongyao Xia 2
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-02-11 , DOI: 10.1021/acssuschemeng.0c08651 Duan Bin 1, 2 , Yanrong Wang 2 , Andebet Gedamu Tamirat 3 , Peng Zhu 1 , Beibei Yang 1 , Jin Wang 1 , Jianhang Huang 2 , Yongyao Xia 2
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Rechargeable aqueous zinc-ion batteries (AZBs) are potentially considered as potential alternatives for large-scale stationary energy storage systems by taking advantage of their easy operating condition, low cost, safety, and environmental friendliness. Herein, we construct high-voltage and stable AZBs with a carbon-coated NaVPO4F cathode. A 15 M NaClO4 + 1 M ZnCF3SO3 solution enables the Na+ and Zn2+ co-insertion mechanism, and the high concentration suppresses vanadium dissolution with long-term stability. The carbon-coated NaVPO4F cathode displays a superior rate capability and exhibits a reversible capacity of 87.4 mAh g–1 and a capacity retention of 94.5% over 400 cycles at 0.1 A g–1. Even at a higher current density of 1 A g–1, it demonstrates an ultralong lifetime of over 4000 cycles with a capacity retention of 89.3%. The highly reversible structural transformation that occurs during the electrochemical insertion/extraction process is evidenced by a series of ex situ XRD, Raman, and XPS analyses.
中文翻译：
基于碳包覆的NaVPO 4 F阴极的稳定高压水锌电池
凭借其易于操作的条件，低成本，安全性和环境友好性，可再充电的水性锌离子电池（AZB）可能被认为是大规模固定式储能系统的潜在替代品。在这里，我们用碳涂层的NaVPO 4 F阴极构造了高电压且稳定的AZB 。15 M NaClO 4 +1 M ZnCF 3 SO 3溶液可以实现Na +和Zn 2+的共插入机制，并且高浓度抑制钒的溶解并具有长期稳定性。碳涂层的NaVPO 4 F阴极具有出色的倍率能力，可逆容量为87.4 mAh g –1在0.1 A g –1的400次循环中，容量保持率为94.5％。即使在1 A g –1的更高电流密度下，它也显示出超过4000个循环的超长寿命，容量保持率为89.3％。一系列异位XRD，拉曼和XPS分析证明了在电化学插入/萃取过程中发生的高度可逆的结构转变。
更新日期：2021-03-01
中文翻译：
基于碳包覆的NaVPO 4 F阴极的稳定高压水锌电池
凭借其易于操作的条件，低成本，安全性和环境友好性，可再充电的水性锌离子电池（AZB）可能被认为是大规模固定式储能系统的潜在替代品。在这里，我们用碳涂层的NaVPO 4 F阴极构造了高电压且稳定的AZB 。15 M NaClO 4 +1 M ZnCF 3 SO 3溶液可以实现Na +和Zn 2+的共插入机制，并且高浓度抑制钒的溶解并具有长期稳定性。碳涂层的NaVPO 4 F阴极具有出色的倍率能力，可逆容量为87.4 mAh g –1在0.1 A g –1的400次循环中，容量保持率为94.5％。即使在1 A g –1的更高电流密度下，它也显示出超过4000个循环的超长寿命，容量保持率为89.3％。一系列异位XRD，拉曼和XPS分析证明了在电化学插入/萃取过程中发生的高度可逆的结构转变。
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