Rare metals, 2022-06, Vol.41 (6), p.1859-1869
2022
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Details
- Autor(en) / Beteiligte
- Titel
- Rational construction of CoP@C hollow structure for ultrafast and stable sodium energy storage
- Ist Teil von
- Rare metals, 2022-06, Vol.41 (6), p.1859-1869
- Ort / Verlag
- Beijing: Nonferrous Metals Society of China
- Erscheinungsjahr
- 2022
- Quelle
- Alma/SFX Local Collection
- Beschreibungen/Notizen
- The development of transition metal phosphides as potential anode materials of sodium-ion batteries has been substantially hindered by their sluggish kinetics and significant volume change during the sodiation/desodiation process. In this work, we put forward a rational design strategy to construct a hollow-structured CoP@C composite to achieve ultrafast and durable sodium energy storage. The CoP@C composite with a well-defined hollow dodecahedron architecture has been synthesized via a stepwise treatment of carbonization and pohsphorization on ZIF-67. The unique hollow carbon framework not only provides high-speed electron/ion transportation pathways for CoP to enable fast sodiation kinetics, but also accommodates large volume change to stabilize the electrode structure. As a consequence, the CoP@C composite could exhibit an ultra-high rate capability of 105 mAh·g −1 at a current density of 30 A·g −1 , and a long-term cycling lifetime. The present study will pave a fresh strategy for exploring advanced high-power anode materials for sodium ion batteries. Graphical abstract
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1001-0521eISSN: 1867-7185DOI: 10.1007/s12598-021-01930-xTitel-ID: cdi_proquest_journals_2653296358
- Format
- –
- Schlagworte
- Anodes, Biomaterials, Chemistry and Materials Science, Electrode materials, Energy, Energy storage, Kinetics, Materials Engineering, Materials Science, Metallic Materials, Nanoscale Science and Technology, Original Article, Phosphides, Physical Chemistry, Sodium, Sodium-ion batteries, Transition metals