Boosting the ionic transport and structural stability of Zn-doped O3-type NaNi1/3Mn1/3Fe1/3O2 cathode material for half/full sodium-ion batteries

Qin, Wenchao; Liu, Yan; Liu, Jinfeng; Yang, Zihao; Liu, Qiaoqiao

doi:10.1016/j.electacta.2022.140357

Cited by 35 publications

(15 citation statements)

References 62 publications

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“…The shift to a higher Bragg angle indicates that the TM interlayer spacing decreased. 38,39 For the Sb-doped NaNMS samples, the increase of d-spacing and the decrease of TM layer spacing implies a wider Na-ion layer spacing, which is expected to facilitate the Na-ion diffusion. Additionally, it is worth noting that, with an increase of Sb doping amount, the intensity ratio between the (003) and (104) peaks (I (003) /I (104) ) increases gradually.…”

Section: Resultsmentioning

confidence: 99%

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

Yuan

Sun

et al. 2022

ACS Nano

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O3-Type layered oxides are widely studied as cathodes for sodium-ion batteries (SIBs) due to their high theoretical capacities. However, their rate capability and durability are limited by tortuous Na+ diffusion channels and complicated phase evolution during Na+ extraction/insertion. Here we report our findings in unravelling the mechanism for dramatically enhancing the stability and rate capability of O3-NaNi0.5Mn0.5–x Sb x O2 (NaNMS) by substitutional Sb doping, which can alter the coordination environment and chemical bonds of the transition metal (TM) ions in the structure, resulting in a more stable structure with wider Na+ transport channels. Furthermore, NaNMS nanoparticles are obtained by surface energy regulation during grain growth. The synergistic effect of Sb doping and nanostructuring greatly reduces the ionic migration energy barrier while increasing the reversibility of the structural evolution during repeated Na+ extraction/insertion. An optimized NaNMS-1 electrode delivers a reversible capacity of 212.3 mAh g–1 at 0.2 C and 74.5 mAh g–1 at 50 C with minimal capacity loss after 100 cycles at a low temperature of −20 °C. Such electrochemical performance is superior to most of the reported layered oxide cathodes used in rechargeable SIBs.

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Section: Resultsmentioning

confidence: 99%

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

Yuan

Sun

et al. 2022

ACS Nano

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“…For instance, TMoxides were used as raw materials to prepare spherical Ni/Mn/Febased cathode precursors by a combined ball milling-spray drying process (Figure 13e). [189,190] The obtained porous hollow products are beneficial for electrolyte permeation and exhibit improved ion-diffusion kinetics. Although rapid spray-drying methods have commercial potential, they still require further optimization to obtain uniform cathode materials.…”

Section: Optimal Synthesis Process: Co-precipitation Versus Other Met...mentioning

confidence: 99%

“…[ 183 ] In addition, cation substitution (such as Al, Ti, Zn, Mg, and Li) was shown to further improve the high‐voltage stability. [ 188,189 ] For example, due to the introduction of Al enhancing the TM–O bonds, widening the ion‐diffusion channels, alleviating the JT effect of Mn 3+ , and reducing the interfacial resistance, the resulting cathode (NaNi 1/3 Mn 0.328 Fe 1/3 Al 0.005 O 2 ) exhibited improved rate capability (101.2 mA h g −1 at 2 C) and cycling stability (86% capacity retention after 200 cycles at 1C). [ 190 ] An investigation of the structure and electrochemical performance of NaMn 0.5 Ni 0.2 Fe 0.3 O 2 and NaMn 0.48 Ni 0.2 Fe 0.3 Mg 0.02 O 2 cathode materials demonstrated that Mg doping reduces the JT effect through a charge compensation mechanism and improves the ionic diffusion capability by expanding the interlayer spacing.…”

Section: O3‐tye Layered Oxide Cathodesmentioning

confidence: 99%

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Practical Cathodes for Sodium‐Ion Batteries: Who Will Take The Crown?

Liang,

Hwang,

Sun

2023

Advanced Energy Materials

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In recent decades, sodium‐ion batteries (SIBs) have received increasing attention because they offer cost and safety advantages and avoid the challenges related to limited lithium/cobalt/nickel resources and environmental pollution. Because the sodium storage performance and production cost of SIBs are dominated by the cathode performance, developing cathode materials with large‐scale production capacity is the key to achieving commercial applications of SIBs. Therefore, developing host materials with high energy density, long cycling life, low production cost, and high chemical/environmental stability is crucial for implementing advanced SIBs. Among the developed cathode materials for SIBs, O3‐type sodiated transition‐metal oxides have attracted extensive attention owing to their simple synthesis methods, high theoretical specific capacity, and sufficient Na content. However, the relatively large Na‐ion radius leads to sluggish diffusion kinetics and inevitable complex phase transitions during the deintercalation/intercalation process, resulting in poor rate capability and cycling stability. Therefore, this review comprehensively summarizes the research progress and modification strategies for O3‐type cathodes, including the component design, surface modification, and optimization of synthesis methods. This work aims to guide the development of commercial layered oxides and provide technical support for the next generation of energy‐storage systems.

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Refining O3‐Type Ni/Mn‐Based Sodium‐Ion Battery Cathodes via “Atomic Knife” Achieving High Capacity and Stability

Yuan,

Li,

Sun

et al. 2024

Adv Funct Materials

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The O3‐type NaNi0.5Mn0.5O2 (NM) layered cathode in sodium ion batteries (SIBs) undergoes structural distortion and capacity degradation during cycling, which seriously hinders its practical application. Herein, lanthanum (La) is employed as a dopant in O3‐NaNi0.5Mn0.5‐xLaxO2 (NML) cathodes, which triggered an “atomic knife” effect, reducing particle size, and stabilizing crystal structure. The larger La ions generated structural strain during grain growth at high temperatures, hindering the movement of grain boundaries and refining the size of NML particles. Comprehensive characterizations illuminated La doping‐induced atomic site occupancy and phase transformations within NML. A competitive phase formation between layered NML and perovskite LaMnO3 (LMO) is observed. Spontaneously formed perovskite LMO provides surface protection. Moreover, strong La─O bonds expand the Na interlayer spacing, enhancing Na+‐ion diffusion. Consequently, NML cathodes exhibit superior long‐term cycling stability and ultrahigh rate capacities compared to pristine NM cathode and most currently reported layered cathodes for SIBs.

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Boosting the ionic transport and structural stability of Zn-doped O3-type NaNi1/3Mn1/3Fe1/3O2 cathode material for half/full sodium-ion batteries

Cited by 35 publications

References 62 publications

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

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

Practical Cathodes for Sodium‐Ion Batteries: Who Will Take The Crown?

Refining O3‐Type Ni/Mn‐Based Sodium‐Ion Battery Cathodes via “Atomic Knife” Achieving High Capacity and Stability

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