Designing a High-Power Sodium-Ion Battery by in Situ Metal Plating
Designing a High-Power Sodium-Ion Battery by in Situ Metal Plating
复制标题
DOI：
10.1021/acsaem.8b01361
复制
发表时间：
2018-12
影响因子：
6.4
通讯作者：
Francesco Mazzali;Marcin W. Orzech;A. Adomkevicius;Ambra Pisanu;L. Malavasi;D. Deganello;S. Margadonna
中科院分区：
文献类型：
--
作者：
Francesco Mazzali;Marcin W. Orzech;A. Adomkevicius;Ambra Pisanu;L. Malavasi;D. Deganello;S. Margadonna
钠离子电池代表了一种直接技术，也是锂离子电池更可持续的替代品，但需要更高的能量和功率水平才能满足绿色电气化的需求。在这里，介绍了无阳极钠离子电池的设计，并从减少质量和高功率能力方面讨论了电池的性能。该电池由六氰基铁酸铁还原氧化石墨烯复合材料作为阴极材料组成，其合成经过定制，可实现最小的结构缺陷（3%）和水含量。其高电位氧化还原电对 FeLS(C) 在高电流速率下稳定，为全电池提供高放电电压和功率。作为负极基板，采用碳涂层铝箔来原位电镀/剥离Na金属，在施加电流为2 mA/cm2时表现出非常小的电压滞后。总体而言，这种简化的全电池架构可以在标称 1C (= 150 mA/g) 下提供 340 Wh/kg 和 500 W/kg，保留 8...
Sodium-ion batteries represent a drop-in technology and a more sustainable alternative to lithium-ion batteries, but higher energies and power levels are required to meet the demands for a greener electrification. Here, the design of an anode-free sodium-ion battery is presented, and the performance of the battery is discussed in terms of reduced mass and high power capabilities. The cell consists of an iron hexacyanoferrate–reduced graphene oxide composite as cathode material, the synthesis of which is tailored to achieve minimal structural defects (3%) and water content. Its high-potential redox couple FeLS(C) is stabilized at high current rates, granting the full cell high discharge voltage and power. As negative substrate, a carbon-coated aluminum foil was adopted for in situ plating/stripping of Na metal, showing very small voltage hysteresis up to an applied current of 2 mA/cm2. Overall, this simplified full-cell architecture can deliver 340 Wh/kg and 500 W/kg at nominal 1C (= 150 mA/g), retaining 8...