Unravelling the growth mechanism of hierarchically structured Ni1/3Co1/3Mn1/3(OH)2 and their application as precursors for high-power cathode materials

Weibo Hua; Wenyuan Liu; Mingzhe Chen; Sylvio Indris; Zhuo Zheng; Xiaodong Guo; Michael Bruns; Tai Hsien Wu; Yanxiao Chen; Benhe Zhong; Shulei Chou; Yong Mook Kang; Helmut Ehrenberg

doi:10.1016/j.electacta.2017.02.105

Unravelling the growth mechanism of hierarchically structured Ni_1/3Co_1/3Mn_1/3(OH)₂ and their application as precursors for high-power cathode materials

Weibo Hua
, Wenyuan Liu
, Mingzhe Chen
, Sylvio Indris
, Zhuo Zheng
, Xiaodong Guo^*
, Michael Bruns
, Tai Hsien Wu
, Yanxiao Chen
, Benhe Zhong
, Shulei Chou
, Yong Mook Kang
, Helmut Ehrenberg

^*Corresponding author for this work

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

95 Citations (Scopus)

Abstract

A hydroxide co-precipitation method is used to synthesize transition metal hydroxide (Ni_1/3Co_1/3Mn_1/3(OH)₂), which is the precursor for layer-structured LiNi_1/3Co_1/3Mn_1/3O₂. The optimum pH range for the preparation of Ni_1/3Co_1/3Mn_1/3(OH)₂ using a continuous stirred-tank reactor is calculated by taking into account the underlying chemical equilibria. The entire growth process of the Ni_1/3Co_1/3Mn_1/3(OH)₂ particles is investigated by monitoring the structure, morphology, particle size distribution, and tap density as a function of the reaction time. The results confirm that the co-precipitation reaction in the presence of ammonia started with the formation of crystal nuclei and (001) plane dominated nanosheets. The reaction ended with spherical and dense hydroxide precursors. The crystal growth mechanism was interpreted during the co-precipitation process, which involved the quick nucleation of primary particles followed by its slow aggregation and crystallization. The electrochemical properties of the final cathode materials with different morphologies are also studied. The results show that the electrochemical performances of the final LiNi_1/3Co_1/3Mn_1/3O₂ are strongly affected by the hierarchical structure of Ni_1/3Co_1/3Mn_1/3(OH)₂.

Original language	English
Pages (from-to)	123-131
Number of pages	9
Journal	Electrochimica Acta
Volume	232
DOIs	https://doi.org/10.1016/j.electacta.2017.02.105
Publication status	Published - 2017 Apr 1
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017 Elsevier Ltd

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

cathode material
Growth mechanism
hydroxide co-precipitation
lithium ion battery
precursor

ASJC Scopus subject areas

General Chemical Engineering
Electrochemistry

Access to Document

10.1016/j.electacta.2017.02.105

Cite this

Hua, W., Liu, W., Chen, M., Indris, S., Zheng, Z., Guo, X., Bruns, M., Wu, T. H., Chen, Y., Zhong, B., Chou, S., Kang, Y. M., & Ehrenberg, H. (2017). Unravelling the growth mechanism of hierarchically structured Ni_1/3Co_1/3Mn_1/3(OH)₂ and their application as precursors for high-power cathode materials. Electrochimica Acta, 232, 123-131. https://doi.org/10.1016/j.electacta.2017.02.105

Hua, W, Liu, W, Chen, M, Indris, S, Zheng, Z, Guo, X, Bruns, M, Wu, TH, Chen, Y, Zhong, B, Chou, S, Kang, YM & Ehrenberg, H 2017, 'Unravelling the growth mechanism of hierarchically structured Ni_1/3Co_1/3Mn_1/3(OH)₂ and their application as precursors for high-power cathode materials', Electrochimica Acta, vol. 232, pp. 123-131. https://doi.org/10.1016/j.electacta.2017.02.105

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title = "Unravelling the growth mechanism of hierarchically structured Ni1/3Co1/3Mn1/3(OH)2 and their application as precursors for high-power cathode materials",

abstract = "A hydroxide co-precipitation method is used to synthesize transition metal hydroxide (Ni1/3Co1/3Mn1/3(OH)2), which is the precursor for layer-structured LiNi1/3Co1/3Mn1/3O2. The optimum pH range for the preparation of Ni1/3Co1/3Mn1/3(OH)2 using a continuous stirred-tank reactor is calculated by taking into account the underlying chemical equilibria. The entire growth process of the Ni1/3Co1/3Mn1/3(OH)2 particles is investigated by monitoring the structure, morphology, particle size distribution, and tap density as a function of the reaction time. The results confirm that the co-precipitation reaction in the presence of ammonia started with the formation of crystal nuclei and (001) plane dominated nanosheets. The reaction ended with spherical and dense hydroxide precursors. The crystal growth mechanism was interpreted during the co-precipitation process, which involved the quick nucleation of primary particles followed by its slow aggregation and crystallization. The electrochemical properties of the final cathode materials with different morphologies are also studied. The results show that the electrochemical performances of the final LiNi1/3Co1/3Mn1/3O2 are strongly affected by the hierarchical structure of Ni1/3Co1/3Mn1/3(OH)2.",

keywords = "cathode material, Growth mechanism, hydroxide co-precipitation, lithium ion battery, precursor",

author = "Weibo Hua and Wenyuan Liu and Mingzhe Chen and Sylvio Indris and Zhuo Zheng and Xiaodong Guo and Michael Bruns and Wu, \{Tai Hsien\} and Yanxiao Chen and Benhe Zhong and Shulei Chou and Kang, \{Yong Mook\} and Helmut Ehrenberg",

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doi = "10.1016/j.electacta.2017.02.105",

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T1 - Unravelling the growth mechanism of hierarchically structured Ni1/3Co1/3Mn1/3(OH)2 and their application as precursors for high-power cathode materials

AU - Hua, Weibo

AU - Liu, Wenyuan

AU - Chen, Mingzhe

AU - Indris, Sylvio

AU - Zheng, Zhuo

AU - Guo, Xiaodong

AU - Bruns, Michael

AU - Wu, Tai Hsien

AU - Chen, Yanxiao

AU - Zhong, Benhe

AU - Chou, Shulei

AU - Kang, Yong Mook

AU - Ehrenberg, Helmut

PY - 2017/4/1

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N2 - A hydroxide co-precipitation method is used to synthesize transition metal hydroxide (Ni1/3Co1/3Mn1/3(OH)2), which is the precursor for layer-structured LiNi1/3Co1/3Mn1/3O2. The optimum pH range for the preparation of Ni1/3Co1/3Mn1/3(OH)2 using a continuous stirred-tank reactor is calculated by taking into account the underlying chemical equilibria. The entire growth process of the Ni1/3Co1/3Mn1/3(OH)2 particles is investigated by monitoring the structure, morphology, particle size distribution, and tap density as a function of the reaction time. The results confirm that the co-precipitation reaction in the presence of ammonia started with the formation of crystal nuclei and (001) plane dominated nanosheets. The reaction ended with spherical and dense hydroxide precursors. The crystal growth mechanism was interpreted during the co-precipitation process, which involved the quick nucleation of primary particles followed by its slow aggregation and crystallization. The electrochemical properties of the final cathode materials with different morphologies are also studied. The results show that the electrochemical performances of the final LiNi1/3Co1/3Mn1/3O2 are strongly affected by the hierarchical structure of Ni1/3Co1/3Mn1/3(OH)2.

AB - A hydroxide co-precipitation method is used to synthesize transition metal hydroxide (Ni1/3Co1/3Mn1/3(OH)2), which is the precursor for layer-structured LiNi1/3Co1/3Mn1/3O2. The optimum pH range for the preparation of Ni1/3Co1/3Mn1/3(OH)2 using a continuous stirred-tank reactor is calculated by taking into account the underlying chemical equilibria. The entire growth process of the Ni1/3Co1/3Mn1/3(OH)2 particles is investigated by monitoring the structure, morphology, particle size distribution, and tap density as a function of the reaction time. The results confirm that the co-precipitation reaction in the presence of ammonia started with the formation of crystal nuclei and (001) plane dominated nanosheets. The reaction ended with spherical and dense hydroxide precursors. The crystal growth mechanism was interpreted during the co-precipitation process, which involved the quick nucleation of primary particles followed by its slow aggregation and crystallization. The electrochemical properties of the final cathode materials with different morphologies are also studied. The results show that the electrochemical performances of the final LiNi1/3Co1/3Mn1/3O2 are strongly affected by the hierarchical structure of Ni1/3Co1/3Mn1/3(OH)2.

KW - cathode material

KW - Growth mechanism

KW - hydroxide co-precipitation

KW - lithium ion battery

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