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Binary Fe/Mn-Based Nanocomposites as Li-Free Cathode Materials for Li Batteries Assembled in Charged State
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-01-20 , DOI: 10.1021/acs.iecr.1c04661 Venkata Rohit Punyapu 1 , Yi Ding 2 , Ka Yuen Simon Ng 1 , Da Deng 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-01-20 , DOI: 10.1021/acs.iecr.1c04661 Venkata Rohit Punyapu 1 , Yi Ding 2 , Ka Yuen Simon Ng 1 , Da Deng 1
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Li-ion batteries play important roles in this mobile society. The ever-increasing demand for energy storage, particularly from electric vehicles, requires next-generation Li batteries with higher energy density and better safety. In contrast to existing Li-ion batteries using lithiated cathodes and Li-free anodes, we explore Li-free cathodes coupled with lithium/lithiated anodes in order to construct new Li batteries assembled in a charged state. Two highly promising Li-free cathode materials of 1-D FeOF nanorods and 2-D monolayer MnO2 nanosheets are integrated to make FeOF@MnO2 nanocomposites. FeOF nanorods are sandwiched by monolayer MnO2 nanosheets where FeOF nanoparticles could prevent the restacking of the monolayer MnO2 nanosheets and the presence of monolayer MnO2 nanosheets could enhance the electrical integration of the FeOF nanorods. Synergistic effects of the binary Fe/Mn-based cathodes can lead to both high voltage and high capacity, compared to individual components. Electrochemical evaluation reveals that binary Fe/Mn-based Li-free cathodes demonstrate promising performances and are worthy of further investigation and optimization.
中文翻译：
二元铁/锰基纳米复合材料作为充电状态组装锂电池的无锂正极材料
锂离子电池在这个移动社会中发挥着重要作用。对储能的需求不断增长，尤其是电动汽车，需要具有更高能量密度和更好安全性的下一代锂电池。与使用锂化正极和无锂负极的现有锂离子电池相比，我们探索了无锂正极与锂/锂化负极相结合，以构建在充电状态下组装的新锂电池。将一维 FeOF 纳米棒和二维单层 MnO 2纳米片这两种极具前景的无锂正极材料集成在一起，制备了 FeOF@MnO 2纳米复合材料。FeOF 纳米棒被单层 MnO 2纳米片夹在中间，其中 FeOF 纳米颗粒可以防止单层 MnO 2重新堆叠纳米片和单层MnO 2纳米片的存在可以增强FeOF纳米棒的电集成。与单个组件相比，二元 Fe/Mn 基阴极的协同效应可导致高电压和高容量。电化学评估表明，二元铁/锰基无锂正极表现出良好的性能，值得进一步研究和优化。
更新日期：2022-01-20
中文翻译：
二元铁/锰基纳米复合材料作为充电状态组装锂电池的无锂正极材料
锂离子电池在这个移动社会中发挥着重要作用。对储能的需求不断增长，尤其是电动汽车，需要具有更高能量密度和更好安全性的下一代锂电池。与使用锂化正极和无锂负极的现有锂离子电池相比，我们探索了无锂正极与锂/锂化负极相结合，以构建在充电状态下组装的新锂电池。将一维 FeOF 纳米棒和二维单层 MnO 2纳米片这两种极具前景的无锂正极材料集成在一起，制备了 FeOF@MnO 2纳米复合材料。FeOF 纳米棒被单层 MnO 2纳米片夹在中间，其中 FeOF 纳米颗粒可以防止单层 MnO 2重新堆叠纳米片和单层MnO 2纳米片的存在可以增强FeOF纳米棒的电集成。与单个组件相比，二元 Fe/Mn 基阴极的协同效应可导致高电压和高容量。电化学评估表明，二元铁/锰基无锂正极表现出良好的性能，值得进一步研究和优化。
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