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Wang Y, Sun Y, Wu F, Zou G, Gaumet JJ, Li J, Fernandez C, Wang Y, Peng Q. Nitrogen-Anchored Boridene Enables Mg-CO 2 Batteries with High Reversibility. J Am Chem Soc 2024; 146:9967-9974. [PMID: 38441882 DOI: 10.1021/jacs.4c00630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
Nanoscale defect engineering plays a crucial role in incorporating extraordinary catalytic properties in two-dimensional materials by varying the surface groups or site interactions. Herein, we synthesized high-loaded nitrogen-doped Boridene (N-Boridene (Mo4/3(BnN1-n)2-mTz), N-doped concentration up to 26.78 at %) nanosheets by chemical exfoliation followed by cyanamide intercalation. Three different nitrogen sites are observed in N-Boridene, wherein the site of boron vacancy substitution mainly accounts for its high chemical activity. Attractively, as a cathode for Mg-CO2 batteries, it delivers a long-term lifetime (305 cycles), high-energy efficiency (93.6%), and ultralow overpotential (∼0.09 V) at a high current of 200 mA g-1, which overwhelms all Mg-CO2 batteries reported so far. Experimental and computational studies suggest that N-Boridene can remarkably change the adsorption energy of the reaction products and lower the energy barrier of the rate-determining step (*MgCO2 → *MgCO3·xH2O), resulting in the rapid reversible formation/decomposition of new MgCO3·5H2O products. The surging Boridene materials with defects provide substantial opportunities to develop other heterogeneous catalysts for efficient capture and converting of CO2.
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Affiliation(s)
- Yangyang Wang
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Yong Sun
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Fengqi Wu
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Guodong Zou
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Jean-Jacques Gaumet
- Laboratoire de Chimie et Physique, Approche Multi-échelles des Milieux Complexes, Institute Jean Barriol, Université de Lorraine, Metz 57070, France
| | - Jinyu Li
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Carlos Fernandez
- School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen AB107GJ, U.K
| | - Yong Wang
- College of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Qiuming Peng
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
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Gong R, Du X, Janzen E, Liu V, Liu Z, He G, Ye B, Li T, Yao NY, Edgar JH, Henriksen EA, Zu C. Isotope engineering for spin defects in van der Waals materials. Nat Commun 2024; 15:104. [PMID: 38168074 PMCID: PMC10761865 DOI: 10.1038/s41467-023-44494-3] [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: 07/22/2023] [Accepted: 12/14/2023] [Indexed: 01/05/2024] Open
Abstract
Spin defects in van der Waals materials offer a promising platform for advancing quantum technologies. Here, we propose and demonstrate a powerful technique based on isotope engineering of host materials to significantly enhance the coherence properties of embedded spin defects. Focusing on the recently-discovered negatively charged boron vacancy center ([Formula: see text]) in hexagonal boron nitride (hBN), we grow isotopically purified h10B15N crystals. Compared to [Formula: see text] in hBN with the natural distribution of isotopes, we observe substantially narrower and less crowded [Formula: see text] spin transitions as well as extended coherence time T2 and relaxation time T1. For quantum sensing, [Formula: see text] centers in our h10B15N samples exhibit a factor of 4 (2) enhancement in DC (AC) magnetic field sensitivity. For additional quantum resources, the individual addressability of the [Formula: see text] hyperfine levels enables the dynamical polarization and coherent control of the three nearest-neighbor 15N nuclear spins. Our results demonstrate the power of isotope engineering for enhancing the properties of quantum spin defects in hBN, and can be readily extended to improving spin qubits in a broad family of van der Waals materials.
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Affiliation(s)
- Ruotian Gong
- Department of Physics, Washington University, St. Louis, MO, 63130, USA
| | - Xinyi Du
- Department of Physics, Washington University, St. Louis, MO, 63130, USA
| | - Eli Janzen
- Tim Taylor Department of Chemical Engineering, Kansas State University, Manhattan, KS, 66506, USA
| | - Vincent Liu
- Department of Physics, Harvard University, Cambridge, MA, 02138, USA
| | - Zhongyuan Liu
- Department of Physics, Washington University, St. Louis, MO, 63130, USA
| | - Guanghui He
- Department of Physics, Washington University, St. Louis, MO, 63130, USA
| | - Bingtian Ye
- Department of Physics, Harvard University, Cambridge, MA, 02138, USA
| | - Tongcang Li
- Department of Physics and Astronomy, Purdue University, West Lafayette, IN, 47907, USA
- Elmore Family School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Norman Y Yao
- Department of Physics, Harvard University, Cambridge, MA, 02138, USA
| | - James H Edgar
- Tim Taylor Department of Chemical Engineering, Kansas State University, Manhattan, KS, 66506, USA
| | - Erik A Henriksen
- Department of Physics, Washington University, St. Louis, MO, 63130, USA
- Institute of Materials Science and Engineering, Washington University, St. Louis, MO, 63130, USA
| | - Chong Zu
- Department of Physics, Washington University, St. Louis, MO, 63130, USA.
- Institute of Materials Science and Engineering, Washington University, St. Louis, MO, 63130, USA.
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