Characteristic of novel composition Nax[Ni0.6Co0.2Mn0.2]O2 as Cathode Materials for So-dium Ion-Batteries

Jang, Byeong-Chan; Shin, Ji-Woong; Bae, J.; Son, Jong‐Tae

doi:10.14447/jnmes.v20i1.290

Cited by 3 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…0.16 Na can be reversibly inserted into Na 2/3 Mn 1/3 Co 2/3 O 2 on discharge from 2.5 to 1.25 V and large reversible capacity is obtained in P2‐Na x Mn 1/2 Co 1/2 O 2 but Na compensation is necessary for the practical use. Although P2‐Na 2/3 [Mn, Co, Ni]O 2 has been also extensively studied in Na batteries, the low working voltage and indispensableness of external Na compensation are drawbacks for P2‐Na 2/3 [Mn, Co]O 2 and the related materials.…”

Section: P2 Type Layered Materialsmentioning

confidence: 99%

Electrochemistry and Solid‐State Chemistry of NaMeO₂ (Me = 3d Transition Metals)

Kubota

Kumakura

Yoda

et al. 2018

Advanced Energy Materials

294

246

View full text Add to dashboard Cite

electrode in Na-ion batteries is also advantageous to the cost reduction, while copper foil is necessary in Li-ion batteries. [30,31] Studies on room-temperature Na-ion batteries have started since 1970s and electrochemical properties of Na//Na x CoO 2 and Na//TiS 2 cells were reported in 1980 [32,33] when that of Li//LiCoO 2 was also first reported. [34] Then, Li-ion batteries was commercialized in 1991. In principle, Li-ion batteries consist of a Li-containing material such as LiCoO 2 as a positive electrode material and a Li-insertion material such as carbon as a negative one. On charge process, Li + ions move from the posi tive to negative electrode through electrolyte solution with simultaneous movement of electrons through an external circuit. A discharge process proceeds in the opposite direction. Li + ions and electrons come back to the positive electrode on the discharge. For ease in handling, Licontaining materials are utilized for the positive and non-Li ones for the negative electrode. Li-ion batteries have attracted much attention as high-voltage rechargeable batteries. On the other hand, Na-ion batteries essentially consist of the same technology with Li-ion batteries, except charge carriers. Na-containing materials are used for the positive and non-Na ones for the negative electrode. Na//Na x CoO 2 , however, shows working voltage ≈1 V lower than Li//LiCoO 2 , resulting in lower energy density. [35] As a result, Na-ion batteries have never been commercialized so far. [18] Indeed, Allied Corp. in USA, Showa Denko K. K., and Hitachi, Ltd. in Japan had collaborative work on Na-ion batteries and filed patents of Na-Pb alloy//γ-Na x CoO 2 cells [36][37][38][39] exhibiting good cycle stability but they had never commercialized the Na-ion batteries. The Na-Pb alloy//γ-Na x CoO 2 cells needed presodiation process for the Pb negative electrode. Therefore, primary drawback of Na-ion batteries was no candidates as practical negative electrode materials without Na predoping. Now, nongraphitizable carbon, so called hard carbon, is known to deliver large reversible capacity with good capacity retention. [40,41] Thus, secondary issue is low working potential of positive electrode materials. Open circuit potential of αand γ-Na x CoO 2 in Na cells is lower than that of α-NaFeO 2 type LiCoO 2 in the Li cell at the end of discharge. Indeed, standard redox potential of Na metal is lower than that of Li metal by ≈0.3 V. [42,43] The difference is, however, much smaller than that between Na x CoO 2 and LiCoO 2 at the end of discharge (ΔV ≈ 1.5 V), [14] which is probably due to larger ionic size and lower Lewis acidity of Na + in comparison to Li + as already discussed by Goodenough and Mizushima et al. in 1980. [35] Since our group demonstrated hard carbon//NaNi 1/2 Mn 1/2 O 2 full cells exhibiting acceptable cycle stability in 2009 [44] and Sodium 3d transition metal oxides for Na-ion batteries have attracted attention of battery researchers because of their new chemistries and abundant material resources in the eart...

show abstract

Section: P2 Type Layered Materialsmentioning

confidence: 99%

Electrochemistry and Solid‐State Chemistry of NaMeO₂ (Me = 3d Transition Metals)

Kubota

Kumakura

Yoda

et al. 2018

Advanced Energy Materials

294

246

View full text Add to dashboard Cite

show abstract

“…Sodium‐ion batteries (SIBs) have fascinated great consideration as alternatives to LIBs for energy storage applications owing to the copiousness of sodium resources on the earth and low cost. Additionally, the working mechanism of sodium is similar to lithium 1‐7 …”

Section: Introductionmentioning

confidence: 99%

Significant role of magnesium substitution in improved performance of layered O3‐Na‐Mn‐Ni‐Mg‐O cathode material for developing sodium‐ion batteries

Kouthaman

Kannan

Ponnaiah

et al. 2022

Intl J of Energy Research

View full text Add to dashboard Cite

Summary The swap of inactive elements is an auspicious strategy for enhancing electrochemical performance and structural durability of the layer cathode material in sodium ion batteries (SIBs). In this regard, the O3‐type Na0.9Mn0.65Ni0.35O2 and inactive element Mg substituted Na0.9Mn0.55Ni0.35Mg0.1O2 and Na0.9Mn0.60Ni0.35Mg0.05O2 cathode materials were prepared using simple solid state reaction for SIBs. The Rietveld refinement confirms the cathode materials have rhombohedral structure and R‐3m space group. O3‐Na0.9Mn0.55Ni0.35Mg0.1O2, O3‐Na0.9Mn0.60Ni0.35Mg0.05O2, and O3‐Na0.9Mn0.65Ni0.35O2 deliver discharge capacity of 174, 179, and 202 mAh g−1 in the voltage range from 2 to 4 V at current density of 0.1C. Moreover, partial quantity of magnesium (Mg) substitution enhances the structural stability by increasing sodium‐oxide (NaO2) diffusion layer and reducing the transition metal oxide (TMO2) layers during cycling process in cathode materials for SIBs. HIGHLIGHTS O3‐Na0.9Mn0.60Ni0.35Mg0.05O2 cathode is prepared via solid state reaction. Mg substitution is enlarged Na‐ion diffusion layer. The prepared cathode reveals discharge capacity of 179 mAh g−1. The obtained cathode exhibits good cycle performance.

show abstract

Dual metal (Fe and Mg) substituted layered titanium-based P2 and O3-type negative electrodes for rechargeable sodium batteries

Kannan

Kouthaman

Subadevi

et al. 2023

Advanced Powder Technology

View full text Add to dashboard Cite

Characteristic of novel composition Nax[Ni0.6Co0.2Mn0.2]O2 as Cathode Materials for So-dium Ion-Batteries

Cited by 3 publications

References 0 publications

Electrochemistry and Solid‐State Chemistry of NaMeO₂ (Me = 3d Transition Metals)

Electrochemistry and Solid‐State Chemistry of NaMeO₂ (Me = 3d Transition Metals)

Significant role of magnesium substitution in improved performance of layered O3‐Na‐Mn‐Ni‐Mg‐O cathode material for developing sodium‐ion batteries

Dual metal (Fe and Mg) substituted layered titanium-based P2 and O3-type negative electrodes for rechargeable sodium batteries

Contact Info

Product

Resources

About

Characteristic of novel composition Nax[Ni0.6Co0.2Mn0.2]O2 as Cathode Materials for So-dium Ion-Batteries

Cited by 3 publications

References 0 publications

Electrochemistry and Solid‐State Chemistry of NaMeO2 (Me = 3d Transition Metals)

Electrochemistry and Solid‐State Chemistry of NaMeO2 (Me = 3d Transition Metals)

Significant role of magnesium substitution in improved performance of layered O3‐Na‐Mn‐Ni‐Mg‐O cathode material for developing sodium‐ion batteries

Dual metal (Fe and Mg) substituted layered titanium-based P2 and O3-type negative electrodes for rechargeable sodium batteries

Contact Info

Product

Resources

About

Electrochemistry and Solid‐State Chemistry of NaMeO₂ (Me = 3d Transition Metals)

Electrochemistry and Solid‐State Chemistry of NaMeO₂ (Me = 3d Transition Metals)