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Surface trace doping of Na enhancing structure stability and adsorption properties of Li1.6Mn1.6O4 for Li+ recovery

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Surface trace doping of Na enhancing structure stability and adsorption properties of Li1.6Mn1.6O4 for Li+ recovery. / Qian, Fangren; Zhao, Bing; Guo, Min; Wu, Zhijian; Zhou, Wuzong; Liu, Zhong.

In: Separation and Purification Technology, Vol. In press, 13.08.2020.

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Harvard

Qian, F, Zhao, B, Guo, M, Wu, Z, Zhou, W & Liu, Z 2020, 'Surface trace doping of Na enhancing structure stability and adsorption properties of Li1.6Mn1.6O4 for Li+ recovery', Separation and Purification Technology, vol. In press. https://doi.org/10.1016/j.seppur.2020.117583

APA

Qian, F., Zhao, B., Guo, M., Wu, Z., Zhou, W., & Liu, Z. (2020). Surface trace doping of Na enhancing structure stability and adsorption properties of Li1.6Mn1.6O4 for Li+ recovery. Separation and Purification Technology, In press. https://doi.org/10.1016/j.seppur.2020.117583

Vancouver

Qian F, Zhao B, Guo M, Wu Z, Zhou W, Liu Z. Surface trace doping of Na enhancing structure stability and adsorption properties of Li1.6Mn1.6O4 for Li+ recovery. Separation and Purification Technology. 2020 Aug 13;In press. https://doi.org/10.1016/j.seppur.2020.117583

Author

Qian, Fangren ; Zhao, Bing ; Guo, Min ; Wu, Zhijian ; Zhou, Wuzong ; Liu, Zhong. / Surface trace doping of Na enhancing structure stability and adsorption properties of Li1.6Mn1.6O4 for Li+ recovery. In: Separation and Purification Technology. 2020 ; Vol. In press.

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@article{0efc06733b5143ebaa8ad4fc3908d6ff,
title = "Surface trace doping of Na enhancing structure stability and adsorption properties of Li1.6Mn1.6O4 for Li+ recovery",
abstract = "Li1.6Mn1.6O4 (LMO) is a dominant adsorbent for lithium recovery from solutions resulted from its high theoretical adsorption uptake and a low loss rate of Mn, which can potentially be further improved by trace doping. We achieve stable cycling and high adsorption capacity of Li1.6Mn1.6O4 from aqueous lithium resources through surface trace doping of Na (LMO-Na). The dissolution of Mn is reduced from 5.4% (before doping) to 4.4%, and the adsorption uptake is increased from 33.5 mg/g to 33.9 mg/g at Li+ concentration of 24 mmol/L. In addition, first-principles calculations further confirm that Na substitutes for Li at 16d sites, leading to an improvement of the Li+ uptake rate and stabilizing the Mn cations in the compound. With the help of Na doping, the undesired dissolution of Mn in the cycling process is inhibited, which may result from reducing the content of the low valent Mn3+ and improving the structural stability of the adsorbent. The effect of the Na substitution on adsorption capacity and structure stability is discussed.",
keywords = "LiMnO, Adsorption, Mn dissolution, DFT calculations",
author = "Fangren Qian and Bing Zhao and Min Guo and Zhijian Wu and Wuzong Zhou and Zhong Liu",
note = "The work was supported by the NSFC (No: 51302280 and No: U1607105), the Scientific and Technological Funding in Qinghai Province, China (No:2018-GX-101, No:2018-ZJ-722 and No:2019-HZ-808,), the Thousand Talents Plan in Qinghai province and Youth Innovation Promotion Association of Chinese Academy of Sciences (No:2016377).",
year = "2020",
month = aug,
day = "13",
doi = "10.1016/j.seppur.2020.117583",
language = "English",
volume = "In press",
journal = "Separation and Purification Technology",
issn = "1383-5866",
publisher = "Elsevier",

}

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TY - JOUR

T1 - Surface trace doping of Na enhancing structure stability and adsorption properties of Li1.6Mn1.6O4 for Li+ recovery

AU - Qian, Fangren

AU - Zhao, Bing

AU - Guo, Min

AU - Wu, Zhijian

AU - Zhou, Wuzong

AU - Liu, Zhong

N1 - The work was supported by the NSFC (No: 51302280 and No: U1607105), the Scientific and Technological Funding in Qinghai Province, China (No:2018-GX-101, No:2018-ZJ-722 and No:2019-HZ-808,), the Thousand Talents Plan in Qinghai province and Youth Innovation Promotion Association of Chinese Academy of Sciences (No:2016377).

PY - 2020/8/13

Y1 - 2020/8/13

N2 - Li1.6Mn1.6O4 (LMO) is a dominant adsorbent for lithium recovery from solutions resulted from its high theoretical adsorption uptake and a low loss rate of Mn, which can potentially be further improved by trace doping. We achieve stable cycling and high adsorption capacity of Li1.6Mn1.6O4 from aqueous lithium resources through surface trace doping of Na (LMO-Na). The dissolution of Mn is reduced from 5.4% (before doping) to 4.4%, and the adsorption uptake is increased from 33.5 mg/g to 33.9 mg/g at Li+ concentration of 24 mmol/L. In addition, first-principles calculations further confirm that Na substitutes for Li at 16d sites, leading to an improvement of the Li+ uptake rate and stabilizing the Mn cations in the compound. With the help of Na doping, the undesired dissolution of Mn in the cycling process is inhibited, which may result from reducing the content of the low valent Mn3+ and improving the structural stability of the adsorbent. The effect of the Na substitution on adsorption capacity and structure stability is discussed.

AB - Li1.6Mn1.6O4 (LMO) is a dominant adsorbent for lithium recovery from solutions resulted from its high theoretical adsorption uptake and a low loss rate of Mn, which can potentially be further improved by trace doping. We achieve stable cycling and high adsorption capacity of Li1.6Mn1.6O4 from aqueous lithium resources through surface trace doping of Na (LMO-Na). The dissolution of Mn is reduced from 5.4% (before doping) to 4.4%, and the adsorption uptake is increased from 33.5 mg/g to 33.9 mg/g at Li+ concentration of 24 mmol/L. In addition, first-principles calculations further confirm that Na substitutes for Li at 16d sites, leading to an improvement of the Li+ uptake rate and stabilizing the Mn cations in the compound. With the help of Na doping, the undesired dissolution of Mn in the cycling process is inhibited, which may result from reducing the content of the low valent Mn3+ and improving the structural stability of the adsorbent. The effect of the Na substitution on adsorption capacity and structure stability is discussed.

KW - LiMnO

KW - Adsorption

KW - Mn dissolution

KW - DFT calculations

U2 - 10.1016/j.seppur.2020.117583

DO - 10.1016/j.seppur.2020.117583

M3 - Article

VL - In press

JO - Separation and Purification Technology

JF - Separation and Purification Technology

SN - 1383-5866

ER -

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