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Yang Z, Liu W, Bai S, Ai P, Wang H, Zheng T, Li Q, Tang S. Anchoring and catalytic insights into bilayer C 4N 3 material for lithium-selenium batteries: a first-principles study. Phys Chem Chem Phys 2024; 26:2291-2303. [PMID: 38165716 DOI: 10.1039/d3cp05075k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
In the present work, a theoretical design for the viability of bilayer C4N3 (bi-C4N3) as a promising host material for Li-Se battery was conducted utilizing first-principles calculations. The AA- and AB-stacking configurations of bilayer C4N3 can effectively inhibit the shuttling of high-order polyselenides through the synergistic effect of physical confinement and strong Li-N bonds. Compared to conventional electrolytes, the AA- and AB-stacking bilayer C4N3 demonstrate enhanced adsorption capabilities for the polyselenides. The anchored structures of Se8 or Li2Sen (n = 1, 2, 4, 6, 8) molecules within the bilayer C4N3 exhibit high electrical conductivities, which are beneficial for enhancing the electrochemical performance. The catalytic effects of AA- and AB-stacking bilayer C4N3 were investigated by the reduction of Se8 and the energy barrier associated with the decomposition of Li2Se. The AA- and AB-stacking bilayer C4N3 can significantly decrease the activation barrier and promote the decomposition of Li2Se. The mean square displacement (MSD) curves reveal the pronounceably sluggish Li-ions diffusions in polyselenides within the AA- and AB-stacking bilayer C4N3, which in turn demonstrates the notable prospects in mitigating the shuttle effect.
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Affiliation(s)
- Zehui Yang
- College of Materials Science and Engineering, Liaoning Technical University, Zhonghua Road. 47, Fuxin, Liaoning 123000, China.
| | - Wentao Liu
- College of Materials Science and Engineering, Liaoning Technical University, Zhonghua Road. 47, Fuxin, Liaoning 123000, China.
| | - Shulin Bai
- College of Materials Science and Engineering, Liaoning Technical University, Zhonghua Road. 47, Fuxin, Liaoning 123000, China.
| | - Peng Ai
- College of Materials Science and Engineering, Liaoning Technical University, Zhonghua Road. 47, Fuxin, Liaoning 123000, China.
| | - Hao Wang
- College of Materials Science and Engineering, Liaoning Technical University, Zhonghua Road. 47, Fuxin, Liaoning 123000, China.
| | - Tuo Zheng
- College of Materials Science and Engineering, Liaoning Technical University, Zhonghua Road. 47, Fuxin, Liaoning 123000, China.
| | - Qingshun Li
- College of Materials Science and Engineering, Liaoning Technical University, Zhonghua Road. 47, Fuxin, Liaoning 123000, China.
| | - Shuwei Tang
- College of Materials Science and Engineering, Liaoning Technical University, Zhonghua Road. 47, Fuxin, Liaoning 123000, China.
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Wei C, Ge M, Fang T, Tang X, Liu X. Rational design of MXene-based single atom catalysts for Na-Se batteries from sabatier principle. Phys Chem Chem Phys 2023; 25:24948-24959. [PMID: 37694491 DOI: 10.1039/d3cp02150e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Na-Se batteries have attracted great attention because of their high-energy density and low cost, though the shuttle effect of polyselenides and sluggish reaction dynamics still limit their practical applications. Herein, MXenes were decorated with single zinc atom as selenium hosts, and the effect of interfacial electrochemical reaction was studied via first-principles simulation. The embedding of single zinc atom into MXenes was found to enhance the anchoring ability to inhibit the shuttle effect. However, Zn-MXenes as single atom catalysts had different effects on interfacial electrochemical reactions, which can be attributed to the increased interaction strengths between Zn-MXenes and polyselenides. For Ti-based MXenes, the enhanced interaction was found to be beneficial for the electrochemical reaction, whereas the overly strong anchoring strength of Zn-Cr2CO2 would inhibit charging-discharging kinetics. Therefore, the matching of MXenes and metal atoms should be considered to adjust the anchoring ability based on the Sabatier principle. This work provides new insights into the design of SACs and high-performance Na-Se batteries.
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Affiliation(s)
- Chunlei Wei
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, Shandong, China.
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, Shandong, China
| | - MengMeng Ge
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, Shandong, China.
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, Shandong, China
| | - Timing Fang
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, Shandong, China.
| | - Xiao Tang
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, Shandong, China.
| | - Xiaomin Liu
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, Shandong, China.
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Tang S, Liu W, Yang Z, Liu C, Bai S, Zhang J, Luo D. Unveiling the anchoring and catalytic effect of Co@C 3N 3 monolayer as a high-performance selenium host material in lithium-selenium batteries: a first-principles study. Phys Chem Chem Phys 2023; 25:21054-21064. [PMID: 37525896 DOI: 10.1039/d3cp01902k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
Suppressing the shuttle effect of high-order polyselenides is crucial for the development of high-performance host materials in lithium-selenium (Li-Se) batteries. Using first-principles calculations, the feasibility of Co@C3N3 monolayer as selenium cathode host material for Li-Se batteries is systematically evaluated from the aspects of binding energy, charge transfer mechanism, and catalytic effect of polyselenides in the present work. The Co@C3N3 monolayer can effectively prevent the solubilization of high-order polyselenides with large binding energy and charge transfer resulting from the synergistic effect of Li-N and Co-Se bonds. The polyselenides are inclined to adsorb on the surface of Co@C3N3 monolayer instead of interacting with the electrolytes, which effectively inhibits the shuttling of high-order polyselenides and improves cycling stability. The cobalt participation improves the conductivity of C3N3 monolayer, and the semi-metallic characteristics of the Co@C3N3 monolayer are maintained after the adsorption of Li2Sen (n = 1, 2, 4, 6, 8) or Se8 clusters, which is advantageous for the utilization of active selenium material. The crucial catalytic role of the Co@C3N3 monolayer is evaluated by examining the reduction pathway of Se8 and the decomposition barrier of Li2Se, and the results highlight the capability of Co@C3N3 monolayer to enhance the utilization of selenium and promote the transition of Li2Se. Our present work could not only provide valuable insights into the anchoring and catalytic effect of Co@C3N3 monolayer, but also shed light on the future investigation on the high performance C3N3-based host materials for Li-Se batteries.
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Affiliation(s)
- Shuwei Tang
- College of Materials Science and Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, China.
| | - Wentao Liu
- College of Materials Science and Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, China.
| | - Zehui Yang
- College of Materials Science and Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, China.
| | - Chenchen Liu
- College of Materials Science and Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, China.
| | - Shulin Bai
- College of Materials Science and Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, China.
| | - Jingyi Zhang
- College of Materials Science and Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, China.
| | - Dongming Luo
- College of Materials Science and Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, China.
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Xia Y, Fang Z, Lu C, Xiao Z, He X, Gan Y, Huang H, Wang G, Zhang W. A Facile Pre-Lithiated Strategy towards High-Performance Li 2Se-LiTiO 2 Composite Cathode for Li-Se Batteries. NANOMATERIALS 2022; 12:nano12050815. [PMID: 35269302 PMCID: PMC8912804 DOI: 10.3390/nano12050815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 02/23/2022] [Accepted: 02/25/2022] [Indexed: 11/18/2022]
Abstract
Conventional lithium-ion batteries with a limited energy density are unable to assume the responsibility of energy-structure innovation. Lithium-selenium (Li-Se) batteries are considered to be the next generation energy storage devices since Se cathodes have high volumetric energy density. However, the shuttle effect and volume expansion of Se cathodes severely restrict the commercialization of Li-Se batteries. Herein, a facile solid-phase synthesis method is successfully developed to fabricate novel pre-lithiated Li2Se-LiTiO2 composite cathode materials. Impressively, the rationally designed Li2Se-LiTiO2 composites demonstrate significantly enhanced electrochemical performance. On the one hand, the overpotential of Li2Se-LiTiO2 cathode extremely decreases from 2.93 V to 2.15 V. On the other hand, the specific discharge capacity of Li2Se-LiTiO2 cathode is two times higher than that of Li2Se. Such enhancement is mainly accounted to the emergence of oxygen vacancies during the conversion of Ti4+ into Ti3+, as well as the strong chemisorption of LiTiO2 particles for polyselenides. This facile pre-lithiated strategy underscores the potential importance of embedding Li into Se for boosting electrochemical performance of Se cathode, which is highly expected for high-performance Li-Se batteries to cover a wide range of practical applications.
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Affiliation(s)
- Yang Xia
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China; (Y.X.); (Z.F.); (X.H.); (Y.G.); (H.H.)
| | - Zheng Fang
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China; (Y.X.); (Z.F.); (X.H.); (Y.G.); (H.H.)
| | - Chengwei Lu
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China; (Y.X.); (Z.F.); (X.H.); (Y.G.); (H.H.)
- Correspondence: (C.L.); (W.Z.)
| | - Zhen Xiao
- Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, China;
| | - Xinping He
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China; (Y.X.); (Z.F.); (X.H.); (Y.G.); (H.H.)
| | - Yongping Gan
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China; (Y.X.); (Z.F.); (X.H.); (Y.G.); (H.H.)
| | - Hui Huang
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China; (Y.X.); (Z.F.); (X.H.); (Y.G.); (H.H.)
| | - Guoguang Wang
- Hengdian Group DMEGC Magnetics Co., Ltd., Dongyang 322118, China;
| | - Wenkui Zhang
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China; (Y.X.); (Z.F.); (X.H.); (Y.G.); (H.H.)
- Correspondence: (C.L.); (W.Z.)
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