当前位置：
X-MOL 学术
›
Inorg. Chem.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Crystalline MnCO3@Amorphous MnOx Composite as Cathode Material for High-Performance Aqueous Zinc-Ion Batteries
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2024-05-16 , DOI: 10.1021/acs.inorgchem.4c00622 Ting Chen 1 , Shuo Zhao 1 , Yuanfeng Liu 1 , Guochun Li 1, 2 , Yingxue Cui 1 , Jingxia Qiu 1, 3 , Jiabiao Lian 1 , Bo Zhang 1
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2024-05-16 , DOI: 10.1021/acs.inorgchem.4c00622 Ting Chen 1 , Shuo Zhao 1 , Yuanfeng Liu 1 , Guochun Li 1, 2 , Yingxue Cui 1 , Jingxia Qiu 1, 3 , Jiabiao Lian 1 , Bo Zhang 1
Affiliation
|
Rechargeable aqueous zinc-ion batteries (RAZIBs) have received extensive attention because of their advantages of low cost, high safety, and nontoxicity. However, problems such as dissolution of the active cathode material, dendrites/passivation of the zinc anode, and slow reaction kinetics hindered their further applications. In this work, a crystalline/amorphous composite-type material composed of crystalline MnCO3 and amorphous MnOx was prepared and used as the cathode material for RAZIBs. The MnCO3@amorphous MnOx (MnCO3@A-MnOx) composite possesses the merits of both the pure crystalline phase of MnCO3 and the amorphous phase of MnOx, which can deliver better electrochemical performance than the corresponding single component in repeated cycles. In addition, crystalline MnCO3 undergoes a complex phase transition to the active MnO2 during the first charge process, providing the composite with a stable structure and additional electrochemical capacity. The electrochemical measurement results indicate that the MnCO3@A-MnOx electrode can display high reversible discharge capacity at 0.1 A g–1, excellent rate performance at 5.0 A g–1, and long cycling stability over 2000 cycles, showing great potential as a cathode material for high-performance RAZIBs.
中文翻译：
结晶MnCO3@非晶MnOx复合材料作为高性能水系锌离子电池正极材料
可充电水性锌离子电池（RAZIB）因其成本低、安全性高、无毒等优点而受到广泛关注。然而，活性正极材料的溶解、锌负极的枝晶/钝化以及反应动力学缓慢等问题阻碍了它们的进一步应用。在这项工作中，制备了由结晶MnCO 3和非晶MnO x组成的结晶/非晶复合型材料，并将其用作RAZIBs的正极材料。 MnCO 3 @非晶MnO x (MnCO 3 @A-MnO x )复合材料同时具有MnCO 3纯晶相和MnO x非晶相的优点，在重复使用中比相应的单一组分具有更好的电化学性能。循环。此外，在第一次充电过程中，结晶MnCO 3经历复杂的相变到活性MnO 2 ，从而为复合材料提供了稳定的结构和额外的电化学容量。电化学测试结果表明，MnCO 3 @A-MnO x电极在0.1 A g –1下表现出高可逆放电容量，在5.0 A g –1下表现出优异的倍率性能，以及超过2000次循环的长循环稳定性，在以下方面表现出巨大的潜力：高性能 RAZIB 的阴极材料。
更新日期：2024-05-16
中文翻译：
结晶MnCO3@非晶MnOx复合材料作为高性能水系锌离子电池正极材料
可充电水性锌离子电池（RAZIB）因其成本低、安全性高、无毒等优点而受到广泛关注。然而，活性正极材料的溶解、锌负极的枝晶/钝化以及反应动力学缓慢等问题阻碍了它们的进一步应用。在这项工作中，制备了由结晶MnCO 3和非晶MnO x组成的结晶/非晶复合型材料，并将其用作RAZIBs的正极材料。 MnCO 3 @非晶MnO x (MnCO 3 @A-MnO x )复合材料同时具有MnCO 3纯晶相和MnO x非晶相的优点，在重复使用中比相应的单一组分具有更好的电化学性能。循环。此外，在第一次充电过程中，结晶MnCO 3经历复杂的相变到活性MnO 2 ，从而为复合材料提供了稳定的结构和额外的电化学容量。电化学测试结果表明，MnCO 3 @A-MnO x电极在0.1 A g –1下表现出高可逆放电容量，在5.0 A g –1下表现出优异的倍率性能，以及超过2000次循环的长循环稳定性，在以下方面表现出巨大的潜力：高性能 RAZIB 的阴极材料。
京公网安备 11010802027423号