Electrochemical properties of P2-type Na2/3Ni1/3Mn2/3O2 plates synthesized by spray pyrolysis process for sodium-ion batteries

Seung Yeon Lee; Jong Hwa Kim; Yun Chan Kang

doi:10.1016/j.electacta.2016.11.141

Electrochemical properties of P2-type Na_2/3Ni_1/3Mn_2/3O₂ plates synthesized by spray pyrolysis process for sodium-ion batteries

Seung Yeon Lee, Jong Hwa Kim, Yun Chan Kang

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

40 Citations (Scopus)

Abstract

P2-type Na_2/3Ni_1/3Mn_2/3O₂ plates with homogeneous composition and regular morphology are prepared by spray pyrolysis. The rhombohedral P3-Na_2/3Ni_1/3Mn_2/3O₂ microspheres formed by one-pot spray pyrolysis transform into hexagonal P2-Na_2/3Ni_1/3Mn_2/3O₂ plates after post-treatment at temperatures between 800 and 1000 °C. The mean size and thickness of P2-Na_2/3Ni_1/3Mn_2/3O₂ plates obtained after post-treatment at 900 °C are 2.2 μm and 550 nm, respectively. The initial discharge capacities of P2-Na_2/3Ni_1/3Mn_2/3O₂ plates formed at 800, 900, and 1000 °C at a current rate of 0.1C are 69, 86, and 80 mA h g⁻¹, respectively, while the discharge capacities after 200 cycles are 68, 80, and 76 mA h g⁻¹, respectively. However, the discharge capacities of P3-Na_2/3Ni_1/3Mn_2/3O₂ powders decrease from 62 to 50 mA h g⁻¹ after 200 cycles. P2-Na_2/3Ni_1/3Mn_2/3O₂ plates show low charge-transfer resistance and also exhibit better rate performance than P3-Na_2/3Ni_1/3Mn_2/3O₂ powders.

Original language	English
Pages (from-to)	86-92
Number of pages	7
Journal	Electrochimica Acta
Volume	225
DOIs	https://doi.org/10.1016/j.electacta.2016.11.141
Publication status	Published - 2017 Jan 20

Keywords

Cathode material
Energy storage materials
Sodium-ion batteries
Spray pyrolysis

ASJC Scopus subject areas

Chemical Engineering(all)
Electrochemistry

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10.1016/j.electacta.2016.11.141

Cite this

@article{d6d27419c4904c648fe6d236445aefc1,

title = "Electrochemical properties of P2-type Na2/3Ni1/3Mn2/3O2 plates synthesized by spray pyrolysis process for sodium-ion batteries",

abstract = "P2-type Na2/3Ni1/3Mn2/3O2 plates with homogeneous composition and regular morphology are prepared by spray pyrolysis. The rhombohedral P3-Na2/3Ni1/3Mn2/3O2 microspheres formed by one-pot spray pyrolysis transform into hexagonal P2-Na2/3Ni1/3Mn2/3O2 plates after post-treatment at temperatures between 800 and 1000 °C. The mean size and thickness of P2-Na2/3Ni1/3Mn2/3O2 plates obtained after post-treatment at 900 °C are 2.2 μm and 550 nm, respectively. The initial discharge capacities of P2-Na2/3Ni1/3Mn2/3O2 plates formed at 800, 900, and 1000 °C at a current rate of 0.1C are 69, 86, and 80 mA h g−1, respectively, while the discharge capacities after 200 cycles are 68, 80, and 76 mA h g−1, respectively. However, the discharge capacities of P3-Na2/3Ni1/3Mn2/3O2 powders decrease from 62 to 50 mA h g−1 after 200 cycles. P2-Na2/3Ni1/3Mn2/3O2 plates show low charge-transfer resistance and also exhibit better rate performance than P3-Na2/3Ni1/3Mn2/3O2 powders.",

keywords = "Cathode material, Energy storage materials, Sodium-ion batteries, Spray pyrolysis",

author = "Lee, {Seung Yeon} and Kim, {Jong Hwa} and Kang, {Yun Chan}",

note = "Funding Information: This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (NRF-2015R1A2A1A15056049). This work was supported by the Energy Efficiency & Resources Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (20153030091450). Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd",

year = "2017",

month = jan,

day = "20",

doi = "10.1016/j.electacta.2016.11.141",

language = "English",

volume = "225",

pages = "86--92",

journal = "Electrochimica Acta",

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publisher = "Elsevier Limited",

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TY - JOUR

T1 - Electrochemical properties of P2-type Na2/3Ni1/3Mn2/3O2 plates synthesized by spray pyrolysis process for sodium-ion batteries

AU - Lee, Seung Yeon

AU - Kim, Jong Hwa

AU - Kang, Yun Chan

N1 - Funding Information: This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (NRF-2015R1A2A1A15056049). This work was supported by the Energy Efficiency & Resources Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (20153030091450). Publisher Copyright: © 2016 Elsevier Ltd

PY - 2017/1/20

Y1 - 2017/1/20

N2 - P2-type Na2/3Ni1/3Mn2/3O2 plates with homogeneous composition and regular morphology are prepared by spray pyrolysis. The rhombohedral P3-Na2/3Ni1/3Mn2/3O2 microspheres formed by one-pot spray pyrolysis transform into hexagonal P2-Na2/3Ni1/3Mn2/3O2 plates after post-treatment at temperatures between 800 and 1000 °C. The mean size and thickness of P2-Na2/3Ni1/3Mn2/3O2 plates obtained after post-treatment at 900 °C are 2.2 μm and 550 nm, respectively. The initial discharge capacities of P2-Na2/3Ni1/3Mn2/3O2 plates formed at 800, 900, and 1000 °C at a current rate of 0.1C are 69, 86, and 80 mA h g−1, respectively, while the discharge capacities after 200 cycles are 68, 80, and 76 mA h g−1, respectively. However, the discharge capacities of P3-Na2/3Ni1/3Mn2/3O2 powders decrease from 62 to 50 mA h g−1 after 200 cycles. P2-Na2/3Ni1/3Mn2/3O2 plates show low charge-transfer resistance and also exhibit better rate performance than P3-Na2/3Ni1/3Mn2/3O2 powders.

AB - P2-type Na2/3Ni1/3Mn2/3O2 plates with homogeneous composition and regular morphology are prepared by spray pyrolysis. The rhombohedral P3-Na2/3Ni1/3Mn2/3O2 microspheres formed by one-pot spray pyrolysis transform into hexagonal P2-Na2/3Ni1/3Mn2/3O2 plates after post-treatment at temperatures between 800 and 1000 °C. The mean size and thickness of P2-Na2/3Ni1/3Mn2/3O2 plates obtained after post-treatment at 900 °C are 2.2 μm and 550 nm, respectively. The initial discharge capacities of P2-Na2/3Ni1/3Mn2/3O2 plates formed at 800, 900, and 1000 °C at a current rate of 0.1C are 69, 86, and 80 mA h g−1, respectively, while the discharge capacities after 200 cycles are 68, 80, and 76 mA h g−1, respectively. However, the discharge capacities of P3-Na2/3Ni1/3Mn2/3O2 powders decrease from 62 to 50 mA h g−1 after 200 cycles. P2-Na2/3Ni1/3Mn2/3O2 plates show low charge-transfer resistance and also exhibit better rate performance than P3-Na2/3Ni1/3Mn2/3O2 powders.

KW - Cathode material

KW - Energy storage materials

KW - Sodium-ion batteries

KW - Spray pyrolysis

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U2 - 10.1016/j.electacta.2016.11.141

DO - 10.1016/j.electacta.2016.11.141

M3 - Article

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SN - 0013-4686

VL - 225

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EP - 92

JO - Electrochimica Acta

JF - Electrochimica Acta

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