Structure and electrochemical properties of hierarchically porous carbon nanomaterials derived from hybrid ZIF-8/ZIF-67 bi-MOF coated cyclomatrix poly(organophosphazene) nanospheres. Zhou, Y., Wemyss, A. M., Brown, O. B., Huang, Q., & Wan, C. NEW JOURNAL OF CHEMISTRY, 44(11):4353–4362, March, 2020. doi abstract bibtex Hybrid bi-ZIF nanocrystals consisting of ZIF-8/ZIF-67 were synthesised in the presence of cyclomatrix poly(organophosphazene) (POP) nanospheres and formed POP/bi-ZIF core@shell nanospheres. POP/bi-ZIF showed excellent thermal stability up to 478 degrees C, with well-preserved core@shell structures during carbonization at 850 degrees C. The resultant core@shell carbon nanospheres exhibited hierarchically mesoporous structures. The porous carbon core was derived from the carbonised covalent inorganic-organic polyphosphazene framework, containing in situ doped heteroatoms such as N, P, S and O; the shell structure was derived from bi-ZIF containing up to 40% Zn and Co elements. The bi-ZIF derived carbon shell showed a BET surface area of 1347.76 m(2) g(-1) and a Langmuir surface area of 1882.71 m(2) g(-1), and the total BET surface area of the core@shell structure reached 1025.00 m(2) g(-1). When applied as an anode material in lithium ion batteries, the core@shell carbon structure exhibited a charge capacity of 595 mA h g(-1) with a discharge capacity of 546 mA h g(-1) and maintained a reversible charge/discharge capacity of 400 mA h g(-1) after 140 cycles, which is higher than the theoretical capacity of a graphite anode. A good cycling stability with 83% capacity retention in the C-rate tests was achieved. This work provides a facile and scalable method to produce mesoporous carbon nanostructures with in situ doped metal elements and heteroatoms, which benefits the high rate electrochemical properties of lithium ion batteries.
@article{zhou_structure_2020,
title = {Structure and electrochemical properties of hierarchically porous carbon nanomaterials derived from hybrid {ZIF}-8/{ZIF}-67 bi-{MOF} coated cyclomatrix poly(organophosphazene) nanospheres},
volume = {44},
issn = {1144-0546},
doi = {10.1039/d0nj00040j},
abstract = {Hybrid bi-ZIF nanocrystals consisting of ZIF-8/ZIF-67 were synthesised in the presence of cyclomatrix poly(organophosphazene) (POP) nanospheres and formed POP/bi-ZIF core@shell nanospheres. POP/bi-ZIF showed excellent thermal stability up to 478 degrees C, with well-preserved core@shell structures during carbonization at 850 degrees C. The resultant core@shell carbon nanospheres exhibited hierarchically mesoporous structures. The porous carbon core was derived from the carbonised covalent inorganic-organic polyphosphazene framework, containing in situ doped heteroatoms such as N, P, S and O; the shell structure was derived from bi-ZIF containing up to 40\% Zn and Co elements. The bi-ZIF derived carbon shell showed a BET surface area of 1347.76 m(2) g(-1) and a Langmuir surface area of 1882.71 m(2) g(-1), and the total BET surface area of the core@shell structure reached 1025.00 m(2) g(-1). When applied as an anode material in lithium ion batteries, the core@shell carbon structure exhibited a charge capacity of 595 mA h g(-1) with a discharge capacity of 546 mA h g(-1) and maintained a reversible charge/discharge capacity of 400 mA h g(-1) after 140 cycles, which is higher than the theoretical capacity of a graphite anode. A good cycling stability with 83\% capacity retention in the C-rate tests was achieved. This work provides a facile and scalable method to produce mesoporous carbon nanostructures with in situ doped metal elements and heteroatoms, which benefits the high rate electrochemical properties of lithium ion batteries.},
number = {11},
urldate = {2020-04-09},
journal = {NEW JOURNAL OF CHEMISTRY},
author = {Zhou, Yutao and Wemyss, Alan M. and Brown, Oliver B. and Huang, Qianye and Wan, Chaoying},
month = mar,
year = {2020},
pages = {4353--4362},
}
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The resultant core@shell carbon nanospheres exhibited hierarchically mesoporous structures. The porous carbon core was derived from the carbonised covalent inorganic-organic polyphosphazene framework, containing in situ doped heteroatoms such as N, P, S and O; the shell structure was derived from bi-ZIF containing up to 40% Zn and Co elements. The bi-ZIF derived carbon shell showed a BET surface area of 1347.76 m(2) g(-1) and a Langmuir surface area of 1882.71 m(2) g(-1), and the total BET surface area of the core@shell structure reached 1025.00 m(2) g(-1). When applied as an anode material in lithium ion batteries, the core@shell carbon structure exhibited a charge capacity of 595 mA h g(-1) with a discharge capacity of 546 mA h g(-1) and maintained a reversible charge/discharge capacity of 400 mA h g(-1) after 140 cycles, which is higher than the theoretical capacity of a graphite anode. A good cycling stability with 83% capacity retention in the C-rate tests was achieved. This work provides a facile and scalable method to produce mesoporous carbon nanostructures with in situ doped metal elements and heteroatoms, which benefits the high rate electrochemical properties of lithium ion batteries.","number":"11","urldate":"2020-04-09","journal":"NEW JOURNAL OF CHEMISTRY","author":[{"propositions":[],"lastnames":["Zhou"],"firstnames":["Yutao"],"suffixes":[]},{"propositions":[],"lastnames":["Wemyss"],"firstnames":["Alan","M."],"suffixes":[]},{"propositions":[],"lastnames":["Brown"],"firstnames":["Oliver","B."],"suffixes":[]},{"propositions":[],"lastnames":["Huang"],"firstnames":["Qianye"],"suffixes":[]},{"propositions":[],"lastnames":["Wan"],"firstnames":["Chaoying"],"suffixes":[]}],"month":"March","year":"2020","pages":"4353–4362","bibtex":"@article{zhou_structure_2020,\n\ttitle = {Structure and electrochemical properties of hierarchically porous carbon nanomaterials derived from hybrid {ZIF}-8/{ZIF}-67 bi-{MOF} coated cyclomatrix poly(organophosphazene) nanospheres},\n\tvolume = {44},\n\tissn = {1144-0546},\n\tdoi = {10.1039/d0nj00040j},\n\tabstract = {Hybrid bi-ZIF nanocrystals consisting of ZIF-8/ZIF-67 were synthesised in the presence of cyclomatrix poly(organophosphazene) (POP) nanospheres and formed POP/bi-ZIF core@shell nanospheres. POP/bi-ZIF showed excellent thermal stability up to 478 degrees C, with well-preserved core@shell structures during carbonization at 850 degrees C. The resultant core@shell carbon nanospheres exhibited hierarchically mesoporous structures. The porous carbon core was derived from the carbonised covalent inorganic-organic polyphosphazene framework, containing in situ doped heteroatoms such as N, P, S and O; the shell structure was derived from bi-ZIF containing up to 40\\% Zn and Co elements. The bi-ZIF derived carbon shell showed a BET surface area of 1347.76 m(2) g(-1) and a Langmuir surface area of 1882.71 m(2) g(-1), and the total BET surface area of the core@shell structure reached 1025.00 m(2) g(-1). When applied as an anode material in lithium ion batteries, the core@shell carbon structure exhibited a charge capacity of 595 mA h g(-1) with a discharge capacity of 546 mA h g(-1) and maintained a reversible charge/discharge capacity of 400 mA h g(-1) after 140 cycles, which is higher than the theoretical capacity of a graphite anode. A good cycling stability with 83\\% capacity retention in the C-rate tests was achieved. This work provides a facile and scalable method to produce mesoporous carbon nanostructures with in situ doped metal elements and heteroatoms, which benefits the high rate electrochemical properties of lithium ion batteries.},\n\tnumber = {11},\n\turldate = {2020-04-09},\n\tjournal = {NEW JOURNAL OF CHEMISTRY},\n\tauthor = {Zhou, Yutao and Wemyss, Alan M. and Brown, Oliver B. and Huang, Qianye and Wan, Chaoying},\n\tmonth = mar,\n\tyear = {2020},\n\tpages = {4353--4362},\n}\n\n","author_short":["Zhou, Y.","Wemyss, A. M.","Brown, O. 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