Electrochemical performance of Na4MnCr(PO4)3/C cathode affected by different transition metal dopants for sodium ion batteries

Zhu，Qing1; Wu，Jinxin1; Tong，Rui2; Li，Wenhao1; Hu，Xiuli1; Tian，Ningchen3; He，Liqing4; Li，Yanwei1; Wang，Zhenyu5

2023-10-15

10.1016/j.jallcom.2023.170748

Journal of Alloys and Compounds   影响因子和分区

0925-8388

1873-4669

NaMnCr(PO) (NMCP) has been considered as one kind of privileged cathodes with high energy density for sodium ion batteries (SIBs) due to three-electron redox reaction during the insertion/extraction process. Nevertheless, its practical use is restricted by its low intrinsic conductivity and serious Jahn-Teller distortions. Herein, a facile doping strategy was presented to address the above issues, and the effects of different kinds and quantities of transition metal dopants on electrochemical performance of NMCP were systemically studied. The results reveal that Ni50-NMCP/C has the most effective doping composition, showing a discharge capacity of 143.0 mAh g at 50 mA g and long-term cyclic stability with capacity retention of 55.7 % at 1000 mA g over 500 cycles, higher than those of the pristine NMCP (106.6 mAh g at 50 mA g and 38.8 % capacity retention at 1000 mA g). The substitution of Ni for Mn promotes electron conductivity and structural stability, rendering improved electrochemical performance. Moreover, the promising electrochemical performance of Ni50-NMCP/C//HC full cell demonstrates the anode's potential for use. This study indicates a quick way to understand the effects of elemental doping on NMCP and explore novel high energy and high stability cathodes for SIBs.

Cathode material Electrochemical performance Na4MnCr(PO4)3 Sodium ion batteries Various element doping

SCI ; EI

英语

其他

Natural Science Foundation of Guangxi Province[2021GXNSFBA075035];

Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering

Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:001014831900001

ELSEVIER SCIENCE SA

20232214170672

Cathodes ; Chromium compounds ; Electric discharges ; Metal ions ; Redox reactions ; Sodium-ion batteries ; Stability ; Transition metals

Metallurgy and Metallography:531 ; Metallurgy:531.1 ; Electricity: Basic Concepts and Phenomena:701.1 ; Secondary Batteries:702.1.2 ; Chemical Reactions:802.2

MATERIALS SCIENCE

2-s2.0-85160443818

Scopus

1.Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials,College of Chemistry and Bioengineering,Guilin University of Technology,Guilin,541004,China
2.Hubei Key Laboratory of Energy Storage and Power Battery,School of Mathematics,Physics and Optoelectronic Engineering,Hubei University of Automotive Technology,Shiyan,442002,China
3.Nation Quality Supervision and Inspection Center of Graphite Products,Chenzhou,423000,China
4.Hefei General Machinery Research Institute Co.,Ltd,Hefei,230031,China
5.Department of Materials Science and Engineering,Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials,Southern University of Science and Technology,Shenzhen,518055,China

Zhu，Qing,Wu，Jinxin,Tong，Rui,et al. Electrochemical performance of Na4MnCr(PO4)3/C cathode affected by different transition metal dopants for sodium ion batteries[J]. Journal of Alloys and Compounds,2023,960.

Zhu，Qing.,Wu，Jinxin.,Tong，Rui.,Li，Wenhao.,Hu，Xiuli.,...&Wang，Zhenyu.(2023).Electrochemical performance of Na4MnCr(PO4)3/C cathode affected by different transition metal dopants for sodium ion batteries.Journal of Alloys and Compounds,960.

Zhu，Qing,et al."Electrochemical performance of Na4MnCr(PO4)3/C cathode affected by different transition metal dopants for sodium ion batteries".Journal of Alloys and Compounds 960(2023).