A High‐Power Na₃V₂(PO₄)₃‐Bi Sodium‐Ion Full Battery in a Wide Temperature Range

Abstract

The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/aenm.201900022. Sodium-Ion BatteriesSodium-ion batteries (SIBs) are promising for large-scale electric energy storage due to the high abundance and wide distribution of sodium resources (Na, 2.74% in the Earth's crust). [1] Construction of full SIBs strongly relies on the selected cathodes, anodes, and their compatibility with electrolytes. [2] Although progress has been obtained in the separate individual cathode and anode, full SIBs with high performance, especially high power density, are still lacking. [3] This is closely related to the large-sized Na + (1.02 Å) as charge carriers shuttling between cathode and anode, which usually leads to sluggish kinetics and structural instability of electrode materials. [4] When operated below 0 °C outdoors for practical applications, the reaction and transport kinetics of SIBs becomes severely slow, [2,5] resulting in reduced capacity, efficiency, and power density. Therefore, realization of full SIBs with high power density and operation in a wide temperature range is faced with

Layered Ca0.28MnO2·0.5H2O as a High Performance Cathode for Aqueous Zinc‐Ion Battery

“…On the other hand, the galvanostatic intermittent titration technique (GITT) is applied to estimate the ion diffusion coefficient in CaMnO electrode. The calculation method is according to the following equation: [ 20 ] where n m , V m , and S are the moles of active materials, molar volume, and contact area between electrode and electrolyte, respectively. τ is the time duration of the pulse.…”

Mitigation of Jahn–Teller distortion and Na+/vacancy ordering in a distorted manganese oxide cathode material by Li substitution

“…Sodium-ion batteries (SIBs) have attracted extensive attention for large-scale electric energy storage due to the abundance and low cost of sodium resources. [1][2][3] However, low energy density and insufficient cycling life limit the practical application of SIBs because of the large radius and heavy mass of Na + . 4,5 Cathode materials play a crucial role in the overall performance and cost of SIBs.…”

Assessment on the Use of High Capacity “Sn4P3”/NHC Composite Electrodes for Sodium‐Ion Batteries with Ether and Carbonate Electrolytes

“…Very recently, ether-based electrolytes have been more widely investigated for graphite, [32] hard carbon, [33] Bi, [34,35] and Sn based electrodes [36,37] [17] due to their generally enhanced compatibility with many anode materials (Sb being an exception [36] ). Note that the stability of the electrolyte is also depending on the type of conductive salt used with sodium trifluoromethanesulfonate (NaOTf) and NaPF 6 being clearly favored (at least in half-cell experiments).…”