Recent developments of layered transition metal oxide cathodes for sodium‐ion batteries toward desired high performance

Abstract

With the development of society, sodium-ion batteries (SIBs) attract more and more attention and are expected to be the next generation of daily energy storage devices. Among the previously reported cathode materials for SIBs, the layered transition metal oxides are considered to be the most competitive cathode materials due to their high specific capacities, simple synthesis process, and many similar advantages to the successful Li transition metal oxides in lithium-ion batteries (LIBs). This review summarizes the recent progress of layered transition metal oxide cathode materials for SIBs, which mainly include Mn-based, Ni/Mn-based, Ni/Co/Mn-based, and Ni/Fe/Mn-based layered cathode materials. The remaining challenges and future developments for the layered transition metal oxide cathode materials are also discussed. This review is expected to provide some insights into the development of layered transition metal oxide cathodes for high-performance SIBs.

A High-Rate, Durable Cathode for Sodium-Ion Batteries: Sb-Doped O3-Type Ni/Mn-Based Layered Oxides

“…As shown in Figure e, NaNMS-1 retains a capacity of 110.2 mAh g –1 at 1 C after 100 cycles, and the Coulombic efficiency after the third cycle is close to 100%. On the contrary, the capacity retention of NaNM is only 28.5% (52.0 mAh g –1 ) after 100 cycles at 1 C, due to irreversible structural damage caused by multiple phase transitions. , Since the NaNMS-1 sample with the smallest Sb doping amount (Sb = 0.01) shows the best electrochemical performance, we have also investigated the electrochemical performance of NaNMS-0.5 with a further reduced Sb doping amount (Sb = 0.005). As shown in Figure S7, the NaNMS-0.5 sample exhibits better electrochemical performance than the pristine NaNM sample but worse than the NaNMS-1 and NaNMS-2 samples.…”

“…Therefore, recent research efforts have been directed to the development of alternative energy storage devices using abundant and environmental friendly raw materials. Room-temperature sodium-ion batteries (SIBs), with low-cost sodium resources and similar chemical properties to those of LIBs, are considered a feasible technology for large-scale energy storage applications. − …”

Advanced material characterization techniques for sodium‐ion battery

“…These inherent drawbacks of lithium‐ion batteries inspired the replacement invention of the energy storage facility. Sodium‐ion batteries, regarded as the potential alternative to lithium‐ion batteries, have attracted a lot of attention on account of the abundance of sodium resources and the comparable reaction pattern with lithium‐ion batteries 8–10 . The development and utilization of sodium‐ion batteries are depending on the electrode materials.…”

Copper complex/polyoxometalate‐based tunable multi‐color film for energy storage

“…In recent years, energy conservation and storage devices have been the focus of significant research efforts due to the energy crisis. 1,2 Electrochromic energy storage (EES) devices combine the advantages of energy storage with accompanying color changes through electrochemical reactions and are suitable for many rapidly developing technologies, including electrochromic (EC) smart windows, [3][4][5] wearable devices, 6 flexible displays, 7,8 and miniaturized indicators. 9,10 As we know, electrode material plays a key role in assembling EES devices.…”