Citation: LI Ya-Dong, DENG Yu-Feng, PAN Zhi-Yi, WEI Yin-Ping, ZHAO Shi-Xi, GAN Lin. Dual Electron Energy Loss Spectrum Imaging of the Surfaces of LiNi_0.5Mn_1.5O₄ Cathode Material[J]. Acta Physico-Chimica Sinica, ;2017, 33(11): 2293-2300. doi: 10.3866/PKU.WHXB201705294 shu

Dual Electron Energy Loss Spectrum Imaging of the Surfaces of LiNi_0.5Mn_1.5O₄ Cathode Material

LI Ya-Dong ^1,2, ,
DENG Yu-Feng ¹ ,
PAN Zhi-Yi ^1,2 ,
WEI Yin-Ping ^1,2 ,
ZHAO Shi-Xi ¹ ,
GAN Lin ^1,2

1.
Department of Energy and Environment, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, Guangdong Province, P. R. China;
2.
Electron Microscopy Laboratory, Materials and Devices Testing Center, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, Guangdong Province, P. R. China

Received Date: 24 April 2017
Revised Date: 19 May 2017

Fund Project: The project was supported by the Guangdong Natural Science Foundation for Distinguished Young Scholars, China (2016A030306035) and Shenzhen Basic Research Program, China (JCYJ20160531194754308).

Acquiring the spatial distribution of Li and the valence state of transition metals (TMs) in lithium ion battery (LIB) electrode materials is critical for understanding their electrochemical performances. Electron energy loss spectrum (EELS) is in principle optimum for analyzing light elements; however, quantitative analysis of Li, the lightest solid element in the periodic table, using EELS remains challenging. This is not only because of the overlap of the Li-K edge and the M₂₃ edge of TMs but also due to the normally large particle sizes of LIB electrode materials (hundreds of nm), leading to significant plural scattering effect in the EELS spectra. Using LiNi_0.5Mn_1.5O₄ (LNMO) as the cathode material, we obtained the spatial distribution of Li, Ni, and Mn by dual EELS spectral imaging, which allows us to simultaneously acquire the zero loss and core loss spectra, thus eliminating both the energy drift and plural scattering effects. Our results reveal that the as-prepared LNMO particles have a Mn/Ni-enriched and Li-poor surface layer of thickness 1-2 nm, and the valence of Mn gradually changed from +4 in the bulk to +2 in the surface layer. Given that the low-valent Mn²⁺ dissolution is a critical reason for structure damage and capacity degradation of LNMO, our results indicate that rational synthesis of LNMO with decreased low-valent Mn²⁺ content could be a previously neglected approach to enhance their electrochemical performance.
- Lithium ion battery,
- Li mapping,
- Valence state distribution,
- Electron energy loss spectroscopy,
- Spectrum imaging
1. [1]
2. [2]
3. [3]
4. [4]
5. [5]
6. [6]
7. [7]
8. [8]
9. [9]
10. [10]
11. [11]
12. [12]
13. [13]
14. [14]
15. [15]
16. [16]
17. [17]
18. [18]
19. [19]
20. [20]
21. [21]
22. [22]
23. [23]
24. [24]
25. [25]
26. [26]
27. [27]
28. [28]
29. [29]
30. [30]
31. [31]
32. [32]
33. [33]
1. [1]
  Yifeng Xu , Jiquan Liu , Bin Cui , Yan Li , Gang Xie , Ying Yang . “Xiao Li’s School Adventures: The Working Principles and Safety Risks of Lithium-ion Batteries”. University Chemistry, 2024, 39(9): 259-265. doi: 10.12461/PKU.DXHX202404009
2. [2]
  Siyu Zhang , Kunhong Gu , Bing'an Lu , Junwei Han , Jiang Zhou . Hydrometallurgical Processes on Recycling of Spent Lithium-lon Battery Cathode: Advances and Applications in Sustainable Technologies. Acta Physico-Chimica Sinica, 2024, 40(10): 2309028-. doi: 10.3866/PKU.WHXB202309028
3. [3]
  Qi Li , Pingan Li , Zetong Liu , Jiahui Zhang , Hao Zhang , Weilai Yu , Xianluo Hu . Fabricating Micro/Nanostructured Separators and Electrode Materials by Coaxial Electrospinning for Lithium-Ion Batteries: From Fundamentals to Applications. Acta Physico-Chimica Sinica, 2024, 40(10): 2311030-. doi: 10.3866/PKU.WHXB202311030
4. [4]
  Junke LIU , Kungui ZHENG , Wenjing SUN , Gaoyang BAI , Guodong BAI , Zuwei YIN , Yao ZHOU , Juntao LI . Preparation of modified high-nickel layered cathode with LiAlO₂/cyclopolyacrylonitrile dual-functional coating. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1461-1473. doi: 10.11862/CJIC.20240189
5. [5]
  Qingtang ZHANG , Xiaoyu WU , Zheng WANG , Xiaomei WANG . Performance of nano Li₂FeSiO₄/C cathode material co-doped by potassium and chlorine ions. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1689-1696. doi: 10.11862/CJIC.20240115
6. [6]
  Yuanchao LI , Weifeng HUANG , Pengchao LIANG , Zifang ZHAO , Baoyan XING , Dongliang YAN , Li YANG , Songlin WANG . Effect of heterogeneous dual carbon sources on electrochemical properties of LiMn_0.8Fe_0.2PO₄/C composites. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 751-760. doi: 10.11862/CJIC.20230252
7. [7]
  Xinpeng LIU , Liuyang ZHAO , Hongyi LI , Yatu CHEN , Aimin WU , Aikui LI , Hao HUANG . Ga₂O₃ coated modification and electrochemical performance of Li_1.2Mn_0.54Ni_0.13Co_0.13O₂ cathode material. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1105-1113. doi: 10.11862/CJIC.20230488
8. [8]
  Zhihuan XU , Qing KANG , Yuzhen LONG , Qian YUAN , Cidong LIU , Xin LI , Genghuai TANG , Yuqing LIAO . Effect of graphene oxide concentration on the electrochemical properties of reduced graphene oxide/ZnS. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1329-1336. doi: 10.11862/CJIC.20230447
9. [9]
  Zhenming Xu , Mingbo Zheng , Zhenhui Liu , Duo Chen , Qingsheng Liu . Experimental Design of Project-Driven Teaching in Computational Materials Science: First-Principles Calculations of the LiFePO₄ Cathode Material for Lithium-Ion Batteries. University Chemistry, 2024, 39(4): 140-148. doi: 10.3866/PKU.DXHX202307022
10. [10]
  Hao Wu , Zhen Liu , Dachang Bai . ¹H NMR Spectrum of Amide Compounds. University Chemistry, 2024, 39(3): 231-238. doi: 10.3866/PKU.DXHX202309020
11. [11]
  Zhihong LUO , Yan SHI , Jinyu AN , Deyi ZHENG , Long LI , Quansheng OUYANG , Bin SHI , Jiaojing SHAO . Two-dimensional silica-modified polyethylene oxide solid polymer electrolyte to enhance the performance of lithium-ion batteries. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 1005-1014. doi: 10.11862/CJIC.20230444
12. [12]
  Qingyan JIANG , Yanyong SHA , Chen CHEN , Xiaojuan CHEN , Wenlong LIU , Hao HUANG , Hongjiang LIU , Qi LIU . Constructing a one-dimensional Cu-coordination polymer-based cathode material for Li-ion batteries. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 657-668. doi: 10.11862/CJIC.20240004
13. [13]
  Jie XIE , Hongnan XU , Jianfeng LIAO , Ruoyu CHEN , Lin SUN , Zhong JIN . Nitrogen-doped 3D graphene-carbon nanotube network for efficient lithium storage. Chinese Journal of Inorganic Chemistry, 2024, 40(10): 1840-1849. doi: 10.11862/CJIC.20240216
14. [14]
  Haiping Wang . A Streamlined Method for Drawing Lewis Structures Using the Valence State of Outer Atoms. University Chemistry, 2024, 39(8): 383-388. doi: 10.12461/PKU.DXHX202401073
15. [15]
  Zhuoming Liang , Ming Chen , Zhiwen Zheng , Kai Chen . Multidimensional Studies on Ketone-Enol Tautomerism of 1,3-Diketones By ¹H NMR. University Chemistry, 2024, 39(7): 361-367. doi: 10.3866/PKU.DXHX202311029
16. [16]
  Peiran ZHAO , Yuqian LIU , Cheng HE , Chunying DUAN . A functionalized Eu³⁺ metal-organic framework for selective fluorescent detection of pyrene. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 713-724. doi: 10.11862/CJIC.20230355
17. [17]
  Donghui PAN , Yuping XU , Xinyu WANG , Lizhen WANG , Junjie YAN , Dongjian SHI , Min YANG , Mingqing CHEN . Preparation and in vivo tracing of ⁶⁸Ga-labeled PM_2.5 mimetic particles for positron emission tomography imaging. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 669-676. doi: 10.11862/CJIC.20230468
18. [18]
  Zian Lin , Yingxue Jin . Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) for Disease Marker Screening and Identification: A Comprehensive Experiment Teaching Reform in Instrumental Analysis. University Chemistry, 2024, 39(11): 327-334. doi: 10.12461/PKU.DXHX202403066
19. [19]
  Doudou Qin , Junyang Ding , Chu Liang , Qian Liu , Ligang Feng , Yang Luo , Guangzhi Hu , Jun Luo , Xijun Liu . Addressing Challenges and Enhancing Performance of Manganese-based Cathode Materials in Aqueous Zinc-Ion Batteries. Acta Physico-Chimica Sinica, 2024, 40(10): 2310034-. doi: 10.3866/PKU.WHXB202310034
20. [20]
  Xiaoning TANG , Shu XIA , Jie LEI , Xingfu YANG , Qiuyang LUO , Junnan LIU , An XUE . Fluorine-doped MnO₂ with oxygen vacancy for stabilizing Zn-ion batteries. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1671-1678. doi: 10.11862/CJIC.20240149

Get Citation

PDF

XML

Metrics

PDF Downloads(3)
Abstract views(258)
HTML views(30)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Dual Electron Energy Loss Spectrum Imaging of the Surfaces of LiNi0.5Mn1.5O4 Cathode Material

Metrics

通讯作者: 陈斌, bchen63@163.com

Dual Electron Energy Loss Spectrum Imaging of the Surfaces of LiNi_0.5Mn_1.5O₄ Cathode Material