Fast and scalable synthesis of durable Na0.44MnO2 cathode material via an oxalate precursor method for Na-ion batteries

Zhang, Ding; Shi, Wenjing; Yan, Yong‐Wang; Xu, Shoudong; Chen, Liang; Wang, Xiaomin; Liu, Shibin

doi:10.1016/j.electacta.2017.11.155

Cited by 44 publications

(26 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One of the most studied is Na 0.44 MnO 2 (NMO), with a tunnel opened structure able to allow an easy reversible Na + (de)insertion, that can be favourably obtained from many simple synthesis routes. Its main strengths are the low cost, eco-friendliness and good theoretical capacity (121 mAh g −1 ) [8]. Unfortunately, structural degradation and unsatisfactory cycling performance can derive from the Jahn-Teller distortion as a consequence of the reduction of Mn 4+ to Mn 3+ during the cell functioning.…”

Section: Introductionmentioning

confidence: 99%

From tunnel NMO to layered polymorphs oxides for sodium ion batteries

et al. 2020

View full text Add to dashboard Cite

The search for highly performing cathode materials for sodium batteries is a fascinating topic. Unfortunately, Na0.44MnO2 (NMO), the well-known cathode material with good electrochemical performances, suffers from structural degradation due to reduction of Mn4+ to the Jahn–Teller Mn3+ ion, limiting the long-term cyclability. The cation substitution can be a useful way to mitigate the problem, thanks to the possible stabilization of mixtures of different polymorphs. In this paper, NMO was first substituted with Fe ions, obtaining Na0.44Mn0.5Fe0.5O2, with layered structure, then Al, Si and Cu (10% atom) were substituted on both Mn and Fe ions. Mixtures of P3 type phases, in different amount depending on dopant, were obtained and quantified by Rietveld refinements, and relationships between chemical composition, polymorph type and morphology were proposed. Cyclic voltammetry showed broad peaks, due to the complex structural transitions consequent to the intercalation/deintercalation of sodium. Charge discharge cycles disclosed the superior performances of Cu doped sample, which also benefits from improved air stability, a well-known issue of layered compounds. Discharge capacity values of about 63 mAh/g were detected at 1C, and after 50 cycles at C/2, capacities of about 80 mAh/g are obtained, with a capacity retention of 86%.

show abstract

Section: Introductionmentioning

confidence: 99%

From tunnel NMO to layered polymorphs oxides for sodium ion batteries

et al. 2020

View full text Add to dashboard Cite

show abstract

“…In its crystal structure, sodium ions can be located in wide S‐shaped and narrower tunnels. It is expected that only the large S‐shaped tunnels can offer diffusion path to accommodate the relatively large size of sodium ions ( Figure a,b), therefore, the x of tunnel Na x MnO 2 varies over the range of 0.22–0.66 during charge and discharge process with a series of phase changes (Figure c) …”

Section: Cathode Materialsmentioning

confidence: 99%

Section: Cathode Materialsmentioning

confidence: 99%

Recent Progress in Rechargeable Sodium‐Ion Batteries: toward High‐Power Applications

Wang

Zhao

et al. 2019

Small

292

152

View full text Add to dashboard Cite

The increasing demands for renewable energy to substitute traditional fossil fuels and related large‐scale energy storage systems (EES) drive developments in battery technology and applications today. The lithium‐ion battery (LIB), the trendsetter of rechargeable batteries, has dominated the market for portable electronics and electric vehicles and is seeking a participant opportunity in the grid‐scale battery market. However, there has been a growing concern regarding the cost and resource availability of lithium. The sodium‐ion battery (SIB) is regarded as an ideal battery choice for grid‐scale EES owing to its similar electrochemistry to the LIB and the crust abundance of Na resources. Because of the participation in frequency regulation, high pulse‐power capability is essential for the implanted SIBs in EES. Herein, a comprehensive overview of the recent advances in the exploration of high‐power cathode and anode materials for SIB is presented, and deep understanding of the inherent host structure, sodium storage mechanism, Na+ diffusion kinetics, together with promising strategies to promote the rate performance is provided. This work may shed light on the classification and screening of alternative high rate electrode materials and provide guidance for the design and application of high power SIBs in the future.

show abstract

“…Since NIBs were first proposed by Delmas et al in the early 1980s, many electrode materials with different electrochemical performances have been developed over the past 35 years, including layered structure materials, tunnel‐type structure materials, polyanion‐based materials, alloying materials, and Prussian blue analogs . However, most of these developed materials are classified as single crystalline structures and exhibit limited electrochemical performances.…”

Section: Introductionmentioning

confidence: 99%

Composite‐Structure Materials for Na‐Ion Batteries

2018

Small Methods

View full text Add to dashboard Cite

structure materials, [25][26][27][28][29][30][31][32][33] polyanion-based materials, [34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50] alloying materials, [9,[51][52][53][54][55][56] and Prussian blue analogs. [57][58][59][60][61] However, most of these developed materials are classified as single crystalline structures and exhibit limited electrochemical performances. Thus, scientists have started to think about developing a new material system that possesses the advantages of multiple materials in one material. An attractive strategy to accomplish this goal is the composite-structure material system, which has received much attention recently. [62][63][64] Compared with single-structure materials, compositestructure materials (CSMs) always exhibit better comprehensive electrochemical performance, e.g., larger reversible capacities and better cycling or rate performance. [65,66] The best example of a CSM has been studied in LIBs for many years, i.e., lithium-manganese-rich layered oxides (LLOs), [67][68][69][70] which possess both layered rhombohedral structures and mono clinic Li 2 MnO 3 -like structures. These CSMs deliver a high discharge capacity of ≈300 mAh g −1 and a high energy density of ≈1000 Wh kg −1 , which are almost two times larger than those of conventional cathode materials for LIBs.Electrode materials for NIBs are mostly derived from LIBs. Recently, some CSMs have been proposed to create NIBs with high electrochemical performance, exhibiting great potential in high-energy-density devices. However, most published CSMs are identified after the synthesis process, and few studies have been conducted on designing CSMs because of the complexity of their crystalline structure. In addition, characterizing all the structures in CSMs is more difficult than characterizing singlestructure materials. Currently, adjusting structural proportions and further balancing the electrochemical performance of CSMs still remain major challenges. Examining the literature, a detailed review of CSMs used in NIBs is lacking. In this work, research development of CSMs for NIBs is conducted based on the crystalline structure, including structure design, identification, and adjustment. Some important work and recent achievements on CSMs with a future outlook based on a mechanism analysis are also reviewed. By reviewing previous important studies on CSMs, a new electrode-material structure system for NIBs is established in this work. Structures in CSMsMost NIB electrode materials are developed based on LIB materials because the batteries have similar mechanisms. [1,3,4] Due to the growing concern of aggravated environmental problems (air pollution, global warming, etc.) and Li resources, Na-ion batteries have received significant attention as a promising alternative. Many electrode materials for Na-ion batteries have been reported in the past, especially over the past five years. However, most of these materials have a single crystalline structure and exhibit a limited electrochemical performance. Recently,...

show abstract

Fast and scalable synthesis of durable Na0.44MnO2 cathode material via an oxalate precursor method for Na-ion batteries

Cited by 44 publications

References 48 publications

From tunnel NMO to layered polymorphs oxides for sodium ion batteries

From tunnel NMO to layered polymorphs oxides for sodium ion batteries

Recent Progress in Rechargeable Sodium‐Ion Batteries: toward High‐Power Applications

Composite‐Structure Materials for Na‐Ion Batteries

Contact Info

Product

Resources

About