1
|
Liu J, Wu Y, Zhang B, Xiao X, Hu Q, Han Q, Wang L, Bei F, He X. A Promising Solid-State Synthesis of LiMn 1- yFe yPO 4 Cathode for Lithium-ion Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309629. [PMID: 37988699 DOI: 10.1002/smll.202309629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/06/2023] [Indexed: 11/23/2023]
Abstract
LiMn1-yFeyPO4 (LMFP) is a significant and cost-effective cathode material for Li-ion batteries, with a higher working voltage than LiFePO4 (LFP) and improved safety features compared to layered oxide cathodes. However, its commercial application faces challenges due to a need for a synthesis process to overcome the low Li-ion diffusion kinetics and complex phase transitions. Herein, a solid-state synthesis process using LFP and nano LiMn0.7Fe0.3PO4 (MF73) is proposed. The larger LFP acts as a structural framework fused with nano-MF73, preserving the morphology and high performance of LFP. These results demonstrate that the solid-state reaction occurs quickly, even at a low sintering temperature of 500 °C, and completes at 700 °C. However, contrary to the expectations, the larger LFP particles disappeared and fused into the nano-MF73 particles, revealing that Fe ions diffuse more easily than Mn ions in the olivine framework. This discovery provides valuable insights into understanding ion diffusion in LMFP. Notably, the obtained LMFP can still deliver an initial capacity of 142.3 mAh g-1, and the phase separation during the electrochemical process is significantly suppressed, resulting in good cycling stability (91.1% capacity retention after 300 cycles). These findings offer a promising approach for synthesizing LMFP with improved performance and stability.
Collapse
Affiliation(s)
- Jinli Liu
- China National Quality Inspection and Testing Center for Industrial Explosive Materials, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Yingqiang Wu
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Bo Zhang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Xiang Xiao
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Qiao Hu
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Qiaofeng Han
- Key Laboratory for Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Li Wang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Fengli Bei
- China National Quality Inspection and Testing Center for Industrial Explosive Materials, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Xiangming He
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
| |
Collapse
|
2
|
High Value-Added Utilization of Waste Hydrodesulfurization Catalysts: Low-Cost Synthesis of Cathode Materials for Lithium-Ion Batteries. SEPARATIONS 2022. [DOI: 10.3390/separations9120449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
This work introduces a one-step method for the preparation of layered oxide cathode materials utilizing pure Ni and Co mixed solution obtained from the waste hydrodesulfurization (HDS) catalyst. An efficient non-separation strategy with pyrometallurgical-hydrometallurgical (pyro-hydrometallurgical) process consisting of roasting and leaching is proposed. Most of the impurity metal elements such as Mo and V were removed by simple water leaching after the waste HDS catalyst was roasted with Na2CO3 at 650 °C for 2.5 h. Additionally, 93.9% Ni and 100.0% Co were recovered by H2SO4 leaching at 90 °C for 2.5 h. Then, LiNi0.533Co0.193Mn0.260V0.003Fe0.007Al0.004O2 (C–NCM) was successfully synthesized by hydroxide co-precipitation and high temperature solid phase methods using the above Ni and Co mixed solution. The final C–NCM material exhibits excellent electrochemical performance with a discharge specific capacity of 199.1 mAh g−1 at 0.1 C and a cycle retention rate of 79.7% after 200 cycles at 1 C. This novel process for the synthesis of cathode material can significantly improve production efficiency and realize the high added-value utilization of metal resources in a waste catalyst.
Collapse
|
3
|
Co-generation of liquid chemicals and electricity over Co-Fe alloy/perovskite anode catalyst in a propane fueled solid oxide fuel cell. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120890] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
4
|
Wang Y, Huang Y, Hua Y, Du Y, Yang H. Ultrastable dihydrophenazine-based polymer from industrial waste as a sustainable lithium-ion battery cathode material. NEW J CHEM 2022. [DOI: 10.1039/d2nj01587k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An industrial-waste-derived polymer, PBMEP, was effectively synthesized as a superior sustainable LIB cathode material with robust cycling stability, high working potentials, and excellent rate capability.
Collapse
Affiliation(s)
- Yujie Wang
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai, 200090, China
| | - Yuanzhu Huang
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai, 200090, China
| | - Ying Hua
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai, 200090, China
| | - Ya Du
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Haishen Yang
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai, 200090, China
| |
Collapse
|