دورية أكاديمية
Synergistic Effect of Dual Phases to Improve Lithium Storage Properties of Nb 2 O 5
| العنوان: | Synergistic Effect of Dual Phases to Improve Lithium Storage Properties of Nb 2 O 5 |
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| المؤلفون: | Qing Ji, Weiheng Chen, Xiaoping Chen, Xiaoyan Wang, Qingyu Dong, Shanshan Yin, Yanbin Shen, Peter Müller-Buschbaum, Ya-Jun Cheng, Yonggao Xia |
| سنة النشر: | 2024 |
| مصطلحات موضوعية: | Biophysics, Medicine, Biotechnology, Hematology, Space Science, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, reasonable redox potential, 01 – 3, high specific capacity, considerably high capacity, although four phases, ion intercalation kinetics, high specific performance, 5 , 2 , 0 – 3, ion intercalation, situ <, electrochemical performance, two phases, xrd measurements, synergistic effect, stable lifetime, single phase, reversible lithium, property enhancement, phase concept, niobium pentoxides, monoclinic phase |
| الوصف: | Niobium pentoxides (Nb 2 O 5 ) present great potential as next-generation anode candidates due to exceptional lithium-ion intercalation kinetics, considerably high capacity, and reasonable redox potential. Although four phases of Nb 2 O 5 including hexagonal, orthorhombic, tetragonal, and monoclinic polymorphs show diverse characteristics in electrochemical performance, stable lifetime, high specific capacity, and fast intercalation properties cannot be delivered simultaneously with a single phase. Herein, this issue is addressed by generating a homogeneous mixture of orthorhombic and monoclinic crystals at the nanoscale. Reversible lithium-ion intercalation/deintercalation of the monoclinic phase is achieved, and exceptional lithium storage sites are created at the interface of the two phases. As a result, electrochemical features of stable lifetime from the orthorhombic phase and high specific performance from the monoclinic phase are harmoniously combined. This dual-phase Nb 2 O 5 /C nanohybrids deliver as high as 380 mA h g –1 (0.01–3.0 V) and 184 mA h g –1 (1.0–3.0 V) after 200 cycles. The essential principle of property enhancement is further confirmed through in situ XRD measurements and DFT calculations. The dual-phase concept can be further applied on electrodes with multiphases to achieve high electrochemical performance. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| العلاقة: | https://figshare.com/articles/journal_contribution/Synergistic_Effect_of_Dual_Phases_to_Improve_Lithium_Storage_Properties_of_Nb_sub_2_sub_O_sub_5_sub_/25131317Test |
| DOI: | 10.1021/acsami.3c17230.s001 |
| الإتاحة: | https://doi.org/10.1021/acsami.3c17230.s001Test https://figshare.com/articles/journal_contribution/Synergistic_Effect_of_Dual_Phases_to_Improve_Lithium_Storage_Properties_of_Nb_sub_2_sub_O_sub_5_sub_/25131317Test |
| حقوق: | CC BY-NC 4.0 |
| رقم الانضمام: | edsbas.6B845AEB |
| قاعدة البيانات: | BASE |
| DOI: | 10.1021/acsami.3c17230.s001 |
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