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Microstructure Regulation Through W6+ Doping to Boost Cycling Stability of LiNi0.9Co0.1O2 Ni-Rich Cathode Materials
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Afei LI1, Chengzhi HU1, Can WANG1, Shicheng CAO1, Weijian TANG1, Zhibao LIU2, Kai CHEN2, Changping WANG2, Zhangxian CHEN1
Journal of the Chinese Ceramic Society | 2023, 51(7) : 1746 - 1755
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Journal of the Chinese Ceramic Society | 2023, 51(7): 1746-1755
• Research Articles •
Microstructure Regulation Through W6+ Doping to Boost Cycling Stability of LiNi0.9Co0.1O2 Ni-Rich Cathode Materials
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Afei LI1, Chengzhi HU1, Can WANG1, Shicheng CAO1, Weijian TANG1, Zhibao LIU2, Kai CHEN2, Changping WANG2, Zhangxian CHEN1
Affiliations
  • 1.School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
  • 2.CNSG Anhui Hongsifang Co., Ltd, Hefei 231602, China

    • LI Afei (1995-), male, Master candidate. E-mail:

About Author:

LI Afei (1995-), male, Master candidate. E-mail:

Published: 2023-06-09 doi: 10.14062/j.issn.0454-5648.20230063
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The applications such as electric vehicles require a high energy density in lithium-ion batteries. LiNi0.9Co0.1O2 has attracted much attention, which has a potential to be next-generation cathode material due to its high specific capacity and reasonable cost. However, some related issues such as Li/Ni mixing, microcracks and surface side reactions caused by H2-H3 phase transformation result in a poor cycling stability for LiNi0.9Co0.1O2. In this paper, the microstructures of LiNi0.9Co0.1O2 by W6+ doping were regulated by an effective method to adjust the surface energy of the primary particles and transform the disordered and irregular-shape primary particles into the well-ordered radially-aligned elongated shape particles. This microstructure feature can suppress the stress accumulation and the formation of micro-cracks in LiNi0.9Co0.1O2, and provide abundant diffusion channels for Li+, thus improving the cycling stability and rate performance of LiNi0.9Co0.1O2 cathode materials. The discharge capacities of 1% (in mole fraction) W-doped LiNi0.9Co0.1O2 are 231.2 mA·h/g at 0.1 C and 213.3 mA·h/g at 0.5 C, respectively, with a high capacity retention of 93% after 150 cycles. This microstructure regulation strategy provides an effective approach for improving the cycling stability of LiNi0.9Co0.1O2 Ni-rich cathode materials.

lithium ions battery  /  cathode materials  /  microstructure  /  doping  /  nickel rich
李阿飞, 胡成志, 王璨, 曹世丞, 唐伟建, 刘治保, 陈凯, 王长平, 陈章贤. W6+掺杂调控微结构增强LiNi0.9Co0.1O2高镍正极材料的循环稳定性. 硅酸盐学报, 2023 , 51 (7) : 1746 -1755 . DOI: 10.14062/j.issn.0454-5648.20230063
Afei LI, Chengzhi HU, Can WANG, Shicheng CAO, Weijian TANG, Zhibao LIU, Kai CHEN, Changping WANG, Zhangxian CHEN. Microstructure Regulation Through W6+ Doping to Boost Cycling Stability of LiNi0.9Co0.1O2 Ni-Rich Cathode Materials[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (7) : 1746 -1755 . DOI: 10.14062/j.issn.0454-5648.20230063
Appendix
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Year 2023 volume 51 Issue 7
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Article Info
doi: 10.14062/j.issn.0454-5648.20230063
  • Receive Date：2023-02-12
  • Online Date：2026-10-19
  • Published：2023-06-09
Article Data
Affiliations
History
  • Received：2023-02-12
  • Revised：2023-03-02
Funding
Affiliations
    1.School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
    2.CNSG Anhui Hongsifang Co., Ltd, Hefei 231602, China

Corresponding:

CHEN Zhangxian (1981-), male, Ph.D., Associate Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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