金属镁掺杂的 LiMnPO4/C 的电化学性能研究

null 刘学武; null 李新; null 邓远富; null 施志聪; Guohua 陈国华

doi:10.3969/j.issn.1001-9731.2013.10.003

金属镁掺杂的 LiMnPO₄/C 的电化学性能研究

Translated title of the contribution: Electrochemical performance research of Mg ion doped LiMnPO₄/C

刘学武, 李新, 邓远富, 施志聪, 陈国华

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

3 Citations (Scopus)

Abstract

LiMn_1-xMg_xPO₄/C(x=0, 0.01, 0.04, 0.05, 0.1) were synthesized by using wet-ballmilling and solid-state calcining with phenolic resin as the carbon source. All samples are single phase with a similar morphology, but the cation substitution results in a crystal lattice shrink because of the smaller ionic radii of Mg²⁺, the particles are small and homogeneous. Charge/discharge and EIS measurement shows that the Mg substitution leads to a significantly increased reversible capacity due to the enhanced electrochemical kinetics. LiMn_0.96-Mg_0.04PO₄/C calcined at 600°C has a discharge capacity of 144 mAh/g at 0.05 C. When charging-discharging by CC-CV-CC mode at high rates, LiMn_0.96Mg_0.04PO₄/C composite exhibits a good cyclability and rate capability.

Translated title of the contribution	Electrochemical performance research of Mg ion doped LiMnPO₄/C
Original language	Chinese (Simplified)
Pages (from-to)	1381-1384
Journal	功能材料
Volume	44
Issue number	10
DOIs	https://doi.org/10.3969/j.issn.1001-9731.2013.10.003
Publication status	Published - 30 May 2013
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

磷酸锰锂
固相反应
镁离子掺杂
酚醛树脂
LiMnPO4
Solid-state reaction
Mg ion doped
Phenolic resin

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@article{de7d41f703ba48bbba35afba8f78fc0f,

title = "金属镁掺杂的 LiMnPO4/C 的电化学性能研究",

abstract = "采用固相湿磨并热处理,以酚醛树脂为碳源,合成了锂离子电池正极材料 LiMn1-xMgxPO4/C (x = 0, 0.01、0.04、0.05 和 0.1).制备的样品具有相似的形貌,掺杂的镁离子半径较小导致了晶格收缩,从而使颗粒细小且分布均匀.充放电测试和交流阻抗表明,由于镁离子掺杂加快了电化学动力学反应过程,而明显提高了材料的电化学性能. 600℃ 煅烧得到的 LiMn0.96Mg0.04PO4/C 材料在 0.05C 倍率下具有 144 mAh/g 的放电容量；高放电倍率下,以恒流-恒压-恒流模式进行充放电测试, LiMn0.96Mg0.04PO4/C 复合正极材料显示出良好的循环性能及倍率性能.",

keywords = "磷酸锰锂, 固相反应, 镁离子掺杂, 酚醛树脂, LiMnPO4, Solid-state reaction, Mg ion doped, Phenolic resin, 磷酸錳鋰, 固相反應, 鎂離子摻雜, 酚醛樹脂",

author = "刘学武 and 李新 and 邓远富 and 施志聪 and 陈国华",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

year = "2013",

month = may,

day = "30",

doi = "10.3969/j.issn.1001-9731.2013.10.003",

language = "繁体中文",

volume = "44",

pages = "1381--1384",

journal = "功能材料",

issn = "1001-9731",

publisher = "Journal of Functional Materials",

number = "10",

}

TY - JOUR

T1 - 金属镁掺杂的 LiMnPO4/C 的电化学性能研究

AU - 刘学武, null

AU - 李新, null

AU - 邓远富, null

AU - 施志聪, null

AU - 陈国华, null

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2013/5/30

Y1 - 2013/5/30

N2 - 采用固相湿磨并热处理,以酚醛树脂为碳源,合成了锂离子电池正极材料 LiMn1-xMgxPO4/C (x = 0, 0.01、0.04、0.05 和 0.1).制备的样品具有相似的形貌,掺杂的镁离子半径较小导致了晶格收缩,从而使颗粒细小且分布均匀.充放电测试和交流阻抗表明,由于镁离子掺杂加快了电化学动力学反应过程,而明显提高了材料的电化学性能. 600℃ 煅烧得到的 LiMn0.96Mg0.04PO4/C 材料在 0.05C 倍率下具有 144 mAh/g 的放电容量；高放电倍率下,以恒流-恒压-恒流模式进行充放电测试, LiMn0.96Mg0.04PO4/C 复合正极材料显示出良好的循环性能及倍率性能.

AB - 采用固相湿磨并热处理,以酚醛树脂为碳源,合成了锂离子电池正极材料 LiMn1-xMgxPO4/C (x = 0, 0.01、0.04、0.05 和 0.1).制备的样品具有相似的形貌,掺杂的镁离子半径较小导致了晶格收缩,从而使颗粒细小且分布均匀.充放电测试和交流阻抗表明,由于镁离子掺杂加快了电化学动力学反应过程,而明显提高了材料的电化学性能. 600℃ 煅烧得到的 LiMn0.96Mg0.04PO4/C 材料在 0.05C 倍率下具有 144 mAh/g 的放电容量；高放电倍率下,以恒流-恒压-恒流模式进行充放电测试, LiMn0.96Mg0.04PO4/C 复合正极材料显示出良好的循环性能及倍率性能.

KW - 磷酸锰锂

KW - 固相反应

KW - 镁离子掺杂

KW - 酚醛树脂

KW - LiMnPO4

KW - Solid-state reaction

KW - Mg ion doped

KW - Phenolic resin

KW - 磷酸錳鋰

KW - 固相反應

KW - 鎂離子摻雜

KW - 酚醛樹脂

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U2 - 10.3969/j.issn.1001-9731.2013.10.003

DO - 10.3969/j.issn.1001-9731.2013.10.003

M3 - RGC 21 - Publication in refereed journal

SN - 1001-9731

VL - 44

SP - 1381

EP - 1384

JO - 功能材料

JF - 功能材料

IS - 10

ER -