Effect of Cu impurity on the electrochemical performance of regenerated LiFePO4/C electrode materials

被引:7
作者
Chen, Yongzhi [3 ]
Wang, Lihua [1 ]
Li, Jian [2 ,4 ]
Tao, Shengdong [2 ]
Gan, Qiang [4 ]
Tang, Xiaolin [4 ]
机构
[1] Cent South Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China
[2] Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China
[3] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China
[4] Hunan Zhengyuan Inst Energy Storage Mat & Devices, Changsha 410083, Hunan, Peoples R China
关键词
LITHIUM-ION BATTERIES; CATHODE MATERIALS; SELF-DISCHARGE; ACID; GRAPHITE; RECOVERY; COBALT; IMPACT; COPPER;
D O I
10.1007/s10854-020-03594-2
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The electrochemical property of lithium-ion batteries (LIBs) is partly determined by the electrode materials. Although enormous researches focus on improving conductivity and structural stability of materials, less attention has been paid to the effect of the impurities in materials such as Copper in LiFePO4/C. In this work, the effect of Copper impurities in regenerated LiFePO4/C on the performance of batteries is studied. Batteries with mixture of materials such as Copper impurity and commercial LiFePO4/C (Cu-LFP) are used in this study. Results indicate that the mixture of materials showed worse electrochemical properties such as lower specific capacity and cyclic stability (especially for 0.68%Cu-LFP, discharge specific capacity was 8.94 mAh g(-1) at 0.1C after 5th cycle), higher median voltage (MV), and DC internal resistance (DCIR) during discharging. Then, Recycled Cu-LFP from spent Cu-LFP batteries were regenerated. It is found that regenerated Cu-LFP has a better electrochemical property apart from self-discharge. Regenerated 0.3%Cu-LFP delivered a capacity of 148.33 mAh g(-1) at rate of 0.1C and maintains 131.33 mAh g(-1) with a high-capacity retention rate of 94.43% at 1C after 150 cycles. Even as cathode materials of 18,650 batteries, the specific capacity was 124.25 mAh g(-1), and 85.99% of its initial capacity was retained over 2000 cycles, which is considered as electrode material of the energy storage devices. This study can provide new guidelines for recycled and reused spent cathode materials containing impurities.
引用
收藏
页码:10460 / 10469
页数:10
相关论文
共 40 条
[11]   Ni-doped LiFePO4/C as high-performance cathode composites for Li-ion batteries [J].
Liu, Yuan ;
Gu, Yi-Jing ;
Luo, Gui-Yang ;
Chen, Zi-Liang ;
Wu, Fu-Zhong ;
Dai, Xin-Yi ;
Mai, Yi ;
Li, Jun-Qi .
CERAMICS INTERNATIONAL, 2020, 46 (10) :14857-14863
[12]   A Critical Review and Analysis on the Recycling of Spent Lithium-Ion Batteries [J].
Lv, Weiguang ;
Wang, Zhonghang ;
Cao, Hongbin ;
Sun, Yong ;
Zhang, Yi ;
Sun, Zhi .
ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2018, 6 (02) :1504-1521
[13]   Analysis of the self-discharge process in LiCoPO4 electrodes: bulks [J].
Manzi, J. ;
Vitucci, F. M. ;
Paolone, A. ;
Trequattrini, F. ;
Di Lecce, D. ;
Panero, S. ;
Brutti, S. .
ELECTROCHIMICA ACTA, 2015, 179 :604-610
[14]   Plate-like LiFePO4 crystallite with preferential growth of (010) lattice plane for high performance Li-ion batteries [J].
Mei, Riguo ;
Song, Xiaorui ;
Yang, Yanfeng ;
An, Zhenguo ;
Zhang, Jingjie .
RSC ADVANCES, 2014, 4 (11) :5746-5752
[15]   Acid baking of spent lithium ion batteries for selective recovery of major metals: A two-step process [J].
Meshram, Pratima ;
Abhilash ;
Pandey, Banshi Dhar ;
Mankhand, Tilak Raj ;
Deveci, Haci .
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, 2016, 43 :117-126
[16]   Positive Effect of Minor Manganese Doping on the Electrochemical Performance of LiFePO4/C under Extreme Conditions [J].
Mi, Yingying ;
Yang, Chengkai ;
Zuo, Zicheng ;
Qi, Liya ;
Tang, Chunxia ;
Zhang, Weidong ;
Zhou, Henghui .
ELECTROCHIMICA ACTA, 2015, 176 :642-648
[17]   Cathodes of spent Li-ion batteries: Dissolution with phosphoric acid and recovery of lithium and cobalt from leach liquors [J].
Pinna, Eliana G. ;
Ruiz, M. C. ;
Ojeda, Manuel W. ;
Rodriguez, Mario H. .
HYDROMETALLURGY, 2017, 167 :66-71
[18]   Recovery of metals from spent lithium-ion battery leach solutions with a mixed solvent extractant system [J].
Pranolo, Y. ;
Zhang, W. ;
Cheng, C. Y. .
HYDROMETALLURGY, 2010, 102 (1-4) :37-42
[19]  
Rebiscoul Q, 2008, SOLID STATE PHENOMEN, V134, P333
[20]   Copper Impurity Effects on LiNi1/3Mn1/3Co1/3O2 Cathode Material [J].
Sa, Qina ;
Heelan, Joseph A. ;
Lu, Yuan ;
Apelian, Diran ;
Wang, Yan .
ACS APPLIED MATERIALS & INTERFACES, 2015, 7 (37) :20585-20590