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Dong H, Liu C, Huang Q, Sun Z, Liang T, Fan C, Chen Y. Sc 3+ substituted Na 3V 2(PO 4) 3 on N-doped porous carbon skeleton boosting high structural stability and superior electrochemical performance for full sodium ion batteries. J Colloid Interface Sci 2024; 667:371-384. [PMID: 38640656 DOI: 10.1016/j.jcis.2024.04.105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/10/2024] [Accepted: 04/15/2024] [Indexed: 04/21/2024]
Abstract
The poor structural stability and conductivity of Na3V2(PO4)3 (NVP) have been serious limitations to its development. In this paper, Sc3+ is selected to replace partial site of V3+ which can enhance its ability to bond with oxygen, forming the ScO6 octahedral unit, resulting in improved structural stability and better kinetic properties for the NVP system. Moreover, due to the larger ionic radius of Sc3+ compared to V3+, moderate Sc3+ substitution can support the crystal framework as pillar ions and expand the migration channels for de-intercalation of Na+, thus efficiently promoting ionic conductivity. The introduction of polyacrylonitrile (PAN) to provide an N-doped porous carbon substrate is another key aspect. The low-cost carbon resource of PAN can induce a beneficial nitrogen-doped carbon skeleton with defects, enhancing electronic conductivity at the interface to reduce the polarization phenomenon. The established pore structure can serve as a buffer for unit cell deformation caused by Na+ migration. Furthermore, the enlarged specific surface area provides more active sites for electrolyte infiltration, improving the material utilization rate. The after cycling X-ray Diffraction/scanning electron microscope (XRD/SEM) further confirms the stabilized porous carbon skeleton and improved crystal stability of Sc-3 material. Ex-situ XRD analysis shows that the crystal volume change in the Sc-3 cathode is relatively slight but reversible during the charge/discharge process, indicating that Sc3+ doping plays a crucial role in stabilizing the unit cell structure. The hybrid Sc/VO6 and PO4 units jointly build a strong bone structure to resist stress and weaken deformation. Accordingly, the optimized Sc-3 sample reveals an initial capacity of 115.9 mAh/g at 0.1C, with a capacity retention of 78.6 % after 2000 cycles at 30C. The Sc-3//CHC full battery can release a capacity of 191.3 mAh/g at 0.05C, accompanied by successful illumination, showcasing its promising practical applications.
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Affiliation(s)
- Haodi Dong
- School of Environment and Safety Engineering, North University of China, Taiyuan 030051, Shanxi, People's Republic of China; Institute of Advanced Energy Materials and Systems, North University of China, Taiyuan 030051, Shanxi, People's Republic of China
| | - Changcheng Liu
- School of Environment and Safety Engineering, North University of China, Taiyuan 030051, Shanxi, People's Republic of China; Institute of Advanced Energy Materials and Systems, North University of China, Taiyuan 030051, Shanxi, People's Republic of China.
| | - Que Huang
- School of Environment and Safety Engineering, North University of China, Taiyuan 030051, Shanxi, People's Republic of China; Institute of Advanced Energy Materials and Systems, North University of China, Taiyuan 030051, Shanxi, People's Republic of China; School of Resources and Safety Engineering, Central South University, Changsha 410010, Hunan, People's Republic of China.
| | - Zhihua Sun
- Scientific and Technological Resources and Instrument Sharing Center of Shanxi Province, Taiyuan 030012, Shanxi, People's Republic of China
| | - Taixin Liang
- School of Environment and Safety Engineering, North University of China, Taiyuan 030051, Shanxi, People's Republic of China
| | - Chunfang Fan
- North University of China, Taiyuan 030051, Shanxi, People's Republic of China
| | - Yanjun Chen
- Institute of Advanced Energy Materials and Systems, North University of China, Taiyuan 030051, Shanxi, People's Republic of China; School of Materials Science and Engineering, North University of China, Taiyuan 030051, Shanxi, People's Republic of China.
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Wang L, Wang J, Wang L, Dong H, Yang C, Yan H, Xiao Y, Wang Y, Chou S, Chen S. Synergistic Strain Suppressing and Interface Engineering in Na 4MnV(PO 4) 3/C for Wide-Temperature and Long-Calendar-Life Sodium-Ion Storage. ACS NANO 2024; 18:10863-10873. [PMID: 38613506 DOI: 10.1021/acsnano.4c00764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/15/2024]
Abstract
A Na4MnV(PO4)3 (NMVP) cathode is regarded as a promising cathode candidate for sodium-ion batteries (SIBs). However, issues such as low electronic conductivity and partial cation dissolution contribute to high polarization and structure distortion. Herein, we engineered the local electron density and reaction kinetic properties of NMVP cathodes with varying oxygen vacancies by introducing varying amounts of Zr doping and carbon coating. The optimized sample exhibited a high-rate capacity of 71.8 mAh g-1 at 30 C (83.1% capacity retention after 1000 cycles) and excellent performance over a wide temperature range (84.1 mAh g-1 at 60 °C and 61.4 mAh g-1 at -30 °C). In situ X-ray diffraction technology confirmed a redox solid solution and a two-phase reaction mechanism, revealing minor changes in cell volume and slight strain variations after Zr doping, effectively suppressing the structural distortion. Theoretical calculations illustrated that Zr doping largely shrinks the band gap of NMVP, enriches local electron density, and slightly alters the local element distribution and bond lengths. Moreover, full-cells have shown high energy density (259.9 Wh kg-1) and outstanding cycling stability (200 cycles). The work provides fresh insights into the synergistic effect of strain suppressing and interface engineering in promoting the development of wide temperature range and long-calendar-life SIBs.
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Affiliation(s)
- Lei Wang
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, Shangda Road 99, Shanghai 200444, China
| | - Jiaqing Wang
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, Shangda Road 99, Shanghai 200444, China
| | - Leilei Wang
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, Shangda Road 99, Shanghai 200444, China
| | - Hanghang Dong
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, Shangda Road 99, Shanghai 200444, China
| | - Chao Yang
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, Shangda Road 99, Shanghai 200444, China
| | - Hao Yan
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, Shangda Road 99, Shanghai 200444, China
| | - Yao Xiao
- Institute for Carbon Neutralization, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China
| | - Yong Wang
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, Shangda Road 99, Shanghai 200444, China
| | - Shulei Chou
- Institute for Carbon Neutralization, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China
| | - Shuangqiang Chen
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, Shangda Road 99, Shanghai 200444, China
- Institute for Carbon Neutralization, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China
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Kim Y, Oh G, Lee J, Baek J, Alfaza G, Lee S, Mathew V, Kansara S, Hwang JY, Kim J. NASICON-Type Na 3V 1.5Cr 0.4Fe 0.1(PO 4) 3: High-Voltage and High-Rate Cathode Materials for Sodium-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2024; 16:5896-5904. [PMID: 38266753 DOI: 10.1021/acsami.3c17166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
Cationic alteration related to a sodium super ion conductor (NASICON)-structured Na3V2(PO4)3 (NVP) is an effective strategy for formulating high-energy and stable cathodes for sodium-ion batteries (SIBs). In this study, we altered the structure of NVP with dual cations, namely, Cr and Fe, to develop Na3V1.5Cr0.4Fe0.1(PO4)3 cathodes for SIBs with high-rate capability (∼71 mAh g-1 at 100 C) and an extreme cycle life output (∼75 mAh g-1 with 95% capacity retention for 10,000 cycles). These excellent electrochemical properties can be ascribed to the synergistic effects of Cr and Fe in the NVP structure, as verified experimentally and theoretically. Therefore, the proposed cosubstitution method can enhance the performance of SIBs by improving their structural stability, electronic conductivity, and phase-change behavior.
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Affiliation(s)
- Yeongmin Kim
- Department of Materials Science and Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Gwangeon Oh
- Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Jun Lee
- Department of Materials Science and Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Jaeryeol Baek
- Department of Materials Science and Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Ghalib Alfaza
- Department of Materials Science and Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Seunggyeong Lee
- Department of Materials Science and Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Vinod Mathew
- Department of Materials Science and Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Shivam Kansara
- Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Jang-Yeon Hwang
- Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
- Department of Battery Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Jaekook Kim
- Department of Materials Science and Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
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