eprintid: 10061160 rev_number: 22 eprint_status: archive userid: 608 dir: disk0/10/06/11/60 datestamp: 2018-11-09 12:21:39 lastmod: 2021-10-09 22:24:39 status_changed: 2018-11-09 12:21:39 type: article metadata_visibility: show creators_name: Zou, R creators_name: Xu, M creators_name: He, SA creators_name: Han, X creators_name: Lin, R creators_name: Cui, Z creators_name: He, G creators_name: Brett, DJL creators_name: Guo, ZX creators_name: Hu, J creators_name: Parkin, IP title: Cobalt nickel nitride coated by a thin carbon layer anchoring on nitrogen-doped carbon nanotube anodes for high-performance lithium-ion batteries ispublished: pub divisions: UCL divisions: B04 divisions: C05 divisions: F43 divisions: C06 divisions: F56 note: This work is licensed under a Creative Commons Attribution 3.0 License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ abstract: Cobalt nickel nitrides coated by a thin carbon layer anchoring on nitrogen-doped carbon nanotubes, named NiCo2N@C-NCNT nanocomposites, were obtained by a facile fabrication method. The work reveals that the NiCo2N structures possess extensive Li+ channels and high electrical conductivity for the rapid electron/ion transfer in lithium-ion batteries (LIBs). These materials were applied as anodes for the first time, and a nanobattery was constructed and examined using a transmission electron microscope (TEM) to directly verify the in situ structural evolution during lithiation/delithiation processes. The results show a small dimensional expansion of the NiCo2N@C-NCNT nanocomposites during the lithiation process; this is due to the disciform expansion of the lithiated NiCo2N nanoparticles which cover the surface of the NCNTs. It was found that some of the lithiated NiCo2N nanoparticles moved along the surface of the NCNTs and entered the NCNTs-thus acting to 'protect' themselves. Moreover, electrodes composed of interconnected NCNTs alleviate the volumetric expansion of NiCo2N@C-NCNT nanocomposites. The NiCo2N@C-NCNT nanocomposite electrode exhibits excellent lithium storage properties in electrochemical tests in coin cell configurations. This material synthesis route and 'self-protection' mechanism provide the basis of a design strategy for developing effective electrode materials in LIBs and a broader sphere of metal-ion batteries. date: 2018-09-19 date_type: published official_url: https://doi.org/10.1039/c8ta08537d oa_status: green full_text_type: pub language: eng primo: open primo_central: open_green article_type_text: Journal Article verified: verified_manual elements_id: 1600160 doi: 10.1039/c8ta08537d lyricists_name: Brett, Daniel lyricists_name: Guo, Zheng Xiao lyricists_name: Han, Xiaoyu lyricists_name: He, Guanjie lyricists_name: Lin, Runjia lyricists_name: Parkin, Ivan lyricists_id: DBRET49 lyricists_id: ZXGUO56 lyricists_id: XHANX72 lyricists_id: GJHEX85 lyricists_id: RLINX34 lyricists_id: IPPAR53 actors_name: Bracey, Alan actors_id: ABBRA90 actors_role: owner full_text_status: public publication: Journal of Materials Chemistry A volume: 6 number: 40 pagerange: 19853-19862 issn: 2050-7496 citation: Zou, R; Xu, M; He, SA; Han, X; Lin, R; Cui, Z; He, G; ... Parkin, IP; + view all <#> Zou, R; Xu, M; He, SA; Han, X; Lin, R; Cui, Z; He, G; Brett, DJL; Guo, ZX; Hu, J; Parkin, IP; - view fewer <#> (2018) Cobalt nickel nitride coated by a thin carbon layer anchoring on nitrogen-doped carbon nanotube anodes for high-performance lithium-ion batteries. Journal of Materials Chemistry A , 6 (40) pp. 19853-19862. 10.1039/c8ta08537d <https://doi.org/10.1039/c8ta08537d>. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/10061160/1/c8ta08537d.pdf