Na 2 Ni 2 TeO 6 : Evaluation as a cathode for sodium battery

Gupta, Asha; Mullins, C. Buddie; Goodenough, John B

doi:10.1016/j.jpowsour.2013.06.073

Cited by 114 publications

(137 citation statements)

References 7 publications

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“…In the case of transition metal ordering, we found that as expected it is mainly controlled by the difference in the ionic radii of M1 and M2, as illustrated by a large number of P2-layered oxides689121314151617181920212223242526272829303132333435. Large difference in ionic radii is favourable for forming ordered arrangement while small difference tends to form disordered arrangement.…”

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confidence: 69%

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P2-Na0.6[Cr0.6Ti0.4]O2 cation-disordered electrode for high-rate symmetric rechargeable sodium-ion batteries

et al. 2015

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Most P2-type layered oxides exhibit Na+/vacancy-ordered superstructures because of strong Na+–Na+ interaction in the alkali metal layer and charge ordering in the transition metal layer. These superstructures evidenced by voltage plateaus in the electrochemical curves limit the Na+ ion transport kinetics and cycle performance in rechargeable batteries. Here we show that such Na+/vacancy ordering can be avoided by choosing the transition metal ions with similar ionic radii and different redox potentials, for example, Cr3+ and Ti4+. The designed P2-Na0.6[Cr0.6Ti0.4]O2 is completely Na+/vacancy-disordered at any sodium content and displays excellent rate capability and long cycle life. A symmetric sodium-ion battery using the same P2-Na0.6[Cr0.6Ti0.4]O2 electrode delivers 75% of the initial capacity at 12C rate. Our contribution demonstrates that the approach of preventing Na+/vacancy ordering by breaking charge ordering in the transition metal layer opens a simple way to design disordered electrode materials with high power density and long cycle life.

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supporting

confidence: 69%

“…The superior Na storage performance from both positive and negative electrodes originates from the peculiar cation-disordered feature in Na 0.6 [Cr 0.6 Ti 0.4 ]O 2 . This performance is much better than that of other P2-type oxides with ordered structure6913151617182024.…”

Section: Resultsmentioning

confidence: 83%

P2-Na0.6[Cr0.6Ti0.4]O2 cation-disordered electrode for high-rate symmetric rechargeable sodium-ion batteries

et al. 2015

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“…Up to present, numerous cathode materials have been evaluated, such as the P2 or O3-layered oxide Na x MO 2 (0.5 < x < 1, M:Ni, Co, Mn, Fe, Cr, Ti, etc.) [5,6,7,8,9,10,11,12,13,14,15,16,17,18], tunnel-type Na 0.44 MnO 2 [19,20], Na 0.66 [Mn 0.66 Ti 0.34 ]O 2 [21], Na superionic conductor (NASICON)-Na 3 V 2 (PO 4 ) 3 /C [22], ferrocyanide-like copper hexacyanoferrate (CuHCF) [23], nickel and copper hexacyanoferrate (Ni-CuHCF) [24], etc. In contrast, the choices of anode materials for sodium-ion batteries are limited to carbonaceous materials, alloys, Ti-based oxides and some organic compounds.…”

Section: Introductionmentioning

confidence: 99%

High Capacity and High Efficiency Maple Tree-Biomass-Derived Hard Carbon as an Anode Material for Sodium-Ion Batteries

et al. 2018

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Sodium-ion batteries (SIBs) are in the spotlight because of their potential use in large-scale energy storage devices due to the abundance and low cost of sodium-based materials. There are many SIB cathode materials under investigation but only a few candidate materials such as carbon, oxides and alloys were proposed as anodes. Among these anode materials, hard carbon shows promising performances with low operating potential and relatively high specific capacity. Unfortunately, its low initial coulombic efficiency and high cost limit its commercial applications. In this study, low-cost maple tree-biomass-derived hard carbon is tested as the anode for sodium-ion batteries. The capacity of hard carbon prepared at 1400 °C (HC-1400) reaches 337 mAh/g at 0.1 C. The initial coulombic efficiency is up to 88.03% in Sodium trifluoromethanesulfonimide (NaTFSI)/Ethylene carbonate (EC): Diethyl carbonate (DEC) electrolyte. The capacity was maintained at 92.3% after 100 cycles at 0.5 C rates. The in situ X-ray diffraction (XRD) analysis showed that no peak shift occurred during charge/discharge, supporting a finding of no sodium ion intercalates in the nano-graphite layer. Its low cost, high capacity and high coulombic efficiency indicate that hard carbon is a promising anode material for sodium-ion batteries.

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“…[3][4][5][6][7][8][9] Amongt he aforementioned materials, layered metal oxidesh ave an umber of advantages including facile synthesis, high theoreticalc apacity,a nd high workingv oltage. [5,[10][11][12] Therefore, the exploration of mixed layered oxidesa se nergystoragem aterials will advance the constructiono fh igh-performance SIBs.…”

Section: Introductionmentioning

confidence: 99%

Highly Stable Na_2/3(Mn_0.54Ni_0.13Co_0.13)O₂ Cathode Modified by Atomic Layer Deposition for Sodium‐Ion Batteries

et al. 2015

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For the first time, atomic layer deposition (ALD) of Al2 O3 was adopted to enhance the cyclic stability of layered P2-type Na2/3 (Mn0.54 Ni0.13 Co0.13 )O2 (MNC) cathodes for use in sodium-ion batteries (SIBs). Discharge capacities of approximately 120, 123, 113, and 105 mA h g(-1) were obtained for the pristine electrode and electrodes coated with 2, 5, and 10 ALD cycles, respectively. All electrodes were cycled at the 1C discharge current rate for voltages between 2 and 4.5 V in 1 M NaClO4 electrolyte. Among the electrodes tested, the Al2 O3 coating from 2 ALD cycles (MNC-2) exhibited the best electrochemical stability and rate capability, whereas the electrode coated by 10 ALD cycles (MNC-10) displayed the highest columbic efficiency (CE), which exceeded 97 % after 100 cycles. The enhanced electrochemical stability observed for ALD-coated electrodes could be a result of the protection effects and high band-gap energy (Eg =9.00 eV) of the Al2 O3 coating layer. Additionally, the metal-oxide coating provides structural stability against mechanical stresses occurring during the cycling process. The capacity, cyclic stability, and rate performance achieved for the MNC electrode coated with 2 ALD cycles of Al2 O3 reveal the best results for SIBs. This study provides a promising route toward increasing the stability and CE of electrode materials for SIB application.

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Na 2 Ni 2 TeO 6 : Evaluation as a cathode for sodium battery

Cited by 114 publications

References 7 publications

P2-Na0.6[Cr0.6Ti0.4]O2 cation-disordered electrode for high-rate symmetric rechargeable sodium-ion batteries

P2-Na0.6[Cr0.6Ti0.4]O2 cation-disordered electrode for high-rate symmetric rechargeable sodium-ion batteries

High Capacity and High Efficiency Maple Tree-Biomass-Derived Hard Carbon as an Anode Material for Sodium-Ion Batteries

Highly Stable Na_2/3(Mn_0.54Ni_0.13Co_0.13)O₂ Cathode Modified by Atomic Layer Deposition for Sodium‐Ion Batteries

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Na 2 Ni 2 TeO 6 : Evaluation as a cathode for sodium battery

Cited by 114 publications

References 7 publications

P2-Na0.6[Cr0.6Ti0.4]O2 cation-disordered electrode for high-rate symmetric rechargeable sodium-ion batteries

P2-Na0.6[Cr0.6Ti0.4]O2 cation-disordered electrode for high-rate symmetric rechargeable sodium-ion batteries

High Capacity and High Efficiency Maple Tree-Biomass-Derived Hard Carbon as an Anode Material for Sodium-Ion Batteries

Highly Stable Na2/3(Mn0.54Ni0.13Co0.13)O2 Cathode Modified by Atomic Layer Deposition for Sodium‐Ion Batteries

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Highly Stable Na_2/3(Mn_0.54Ni_0.13Co_0.13)O₂ Cathode Modified by Atomic Layer Deposition for Sodium‐Ion Batteries