Radially aligned hierarchical columnar structure as a cathode material for high energy density sodium-ion batteries

Jang Yeon Hwang; Seung Min Oh; Seung Taek Myung; Kyung Yoon Chung; Ilias Belharouak; Yang Kook Sun

doi:10.1038/ncomms7865

Radially aligned hierarchical columnar structure as a cathode material for high energy density sodium-ion batteries

Jang Yeon Hwang, Seung Min Oh, Seung Taek Myung, Kyung Yoon Chung, Ilias Belharouak, Yang Kook Sun

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

233 Scopus citations

Abstract

Delivery of high capacity with good retention is a challenge in developing cathodes for rechargeable sodium-ion batteries. Here we present a radially aligned hierarchical columnar structure in spherical particles with varied chemical composition from the inner end (Na[Ni_0.75Co_0.02Mn_0.23]O₂) to the outer end (Na[Ni_0.58Co_0.06Mn_0.36]O₂) of the structure. With this cathode material, we show that an electrochemical reaction based on Ni^2+/3+/4+ is readily available to deliver a discharge capacity of 157 mAh (g-oxide)^-1 (15mAg^-1), a capacity retention of 80% (125mAhg^-1) during 300 cycles in combination with a hard carbon anode, and a rate capability of 132.6 mAhg^-1 (1,500mAg^-1, 10 C-rate). The cathode also exhibits good temperature performance even at -20°C. These results originate from rather unique chemistry of the cathode material, which enables the Ni redox reaction and minimizes the surface area contacting corrosive electrolyte.

Original language	English
Article number	6865
Journal	Nature Communications
Volume	6
DOIs	https://doi.org/10.1038/ncomms7865
State	Published - Apr 17 2015
Externally published	Yes

Funding

This work was supported by the Global Frontier R&D Programme (2013M3A6B1078875) on Center for Hybrid Interface Materials (HIM) funded by the Ministry of Science, ICT & Future Planning and supported by a Human Resources Development programme (No. 20124010203310) of a Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Trade, Industry and Energy.

Funders	Funder number
Center for Hybrid Interface Materials
Global Frontier R&D Programme	2013M3A6B1078875
HIM
Ministry of Trade, Industry and Energy
Ministry of Science, ICT and Future Planning	20124010203310
Korea Institute of Energy Technology Evaluation and Planning

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1038/ncomms7865

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abstract = "Delivery of high capacity with good retention is a challenge in developing cathodes for rechargeable sodium-ion batteries. Here we present a radially aligned hierarchical columnar structure in spherical particles with varied chemical composition from the inner end (Na[Ni0.75Co0.02Mn0.23]O2) to the outer end (Na[Ni0.58Co0.06Mn0.36]O2) of the structure. With this cathode material, we show that an electrochemical reaction based on Ni2+/3+/4+ is readily available to deliver a discharge capacity of 157 mAh (g-oxide)-1 (15mAg-1), a capacity retention of 80% (125mAhg-1) during 300 cycles in combination with a hard carbon anode, and a rate capability of 132.6 mAhg-1 (1,500mAg-1, 10 C-rate). The cathode also exhibits good temperature performance even at -20°C. These results originate from rather unique chemistry of the cathode material, which enables the Ni redox reaction and minimizes the surface area contacting corrosive electrolyte.",

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AU - Hwang, Jang Yeon

AU - Oh, Seung Min

AU - Myung, Seung Taek

AU - Chung, Kyung Yoon

AU - Belharouak, Ilias

AU - Sun, Yang Kook

PY - 2015/4/17

Y1 - 2015/4/17

N2 - Delivery of high capacity with good retention is a challenge in developing cathodes for rechargeable sodium-ion batteries. Here we present a radially aligned hierarchical columnar structure in spherical particles with varied chemical composition from the inner end (Na[Ni0.75Co0.02Mn0.23]O2) to the outer end (Na[Ni0.58Co0.06Mn0.36]O2) of the structure. With this cathode material, we show that an electrochemical reaction based on Ni2+/3+/4+ is readily available to deliver a discharge capacity of 157 mAh (g-oxide)-1 (15mAg-1), a capacity retention of 80% (125mAhg-1) during 300 cycles in combination with a hard carbon anode, and a rate capability of 132.6 mAhg-1 (1,500mAg-1, 10 C-rate). The cathode also exhibits good temperature performance even at -20°C. These results originate from rather unique chemistry of the cathode material, which enables the Ni redox reaction and minimizes the surface area contacting corrosive electrolyte.

AB - Delivery of high capacity with good retention is a challenge in developing cathodes for rechargeable sodium-ion batteries. Here we present a radially aligned hierarchical columnar structure in spherical particles with varied chemical composition from the inner end (Na[Ni0.75Co0.02Mn0.23]O2) to the outer end (Na[Ni0.58Co0.06Mn0.36]O2) of the structure. With this cathode material, we show that an electrochemical reaction based on Ni2+/3+/4+ is readily available to deliver a discharge capacity of 157 mAh (g-oxide)-1 (15mAg-1), a capacity retention of 80% (125mAhg-1) during 300 cycles in combination with a hard carbon anode, and a rate capability of 132.6 mAhg-1 (1,500mAg-1, 10 C-rate). The cathode also exhibits good temperature performance even at -20°C. These results originate from rather unique chemistry of the cathode material, which enables the Ni redox reaction and minimizes the surface area contacting corrosive electrolyte.

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VL - 6

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ER -

Radially aligned hierarchical columnar structure as a cathode material for high energy density sodium-ion batteries

Abstract

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UN SDGs

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