READ ME File For 'Dataset for: Enhancing the performance of hard carbon for sodium-ion batteries by coating with silicon nitride/oxycarbide nanoparticles' Dataset DOI: 10.5258/SOTON/D2010 ReadMe Author: Andrew Hector, University of Southampton [ORCID:0000-0002-9964-2163] This dataset supports the publication: AUTHORS: Hang Cheng, Nuria Garcia-Araez, and Andrew L. Hector TITLE: Enhancing the performance of hard carbon for sodium-ion batteries by coating with silicon nitride/oxycarbide nanoparticles JOURNAL: Materials Advances PAPER DOI: Enhancing the performance of hard carbon for sodium-ion batteries by coating with silicon nitride/oxycarbide nanoparticles This dataset contains: All data supplied as text files. Fig. 2a Each two columns show the X-ray diffraction intensity and 2 theta degree. Columns from left to right represent HC-SiNx composites with increase volume of SiCl4. Fig. 2b Each two columns show the X-ray diffraction intensity and 2 theta degree. Columns from left to right represent HC-SiOC composites with increase volume of SiCl4. Fig. 3a, top image XPS fitting data (Si 2p) of HC-SiNx-0.4 composite. Fig. 3a, bottom image XPS fitting data (Si 2p) of HC-SiOC-0.4 composite. Fig. 3b XPS fitting data (N 1s) of HC-SiNx-0.4 composite. Fig. 3c XPS fitting data (C 1s) of HC-SiOC-0.4 composite. Fig. 4a Each two columns show the voltage and specific capacity in first cycle. Columns from left to right represent HC-SiNx electrodes with increase volume of SiCl4. Fig. 4b Each two columns show the voltage and specific capacity in first cycle. Columns from left to right represent HC-SiOC electrodes with increase volume of SiCl4. Fig. 5a Columns from left to right represent the cycle number and specific capacity of HC-SiNx electrodes with increase volume of SiCl4 in 50 cycles. Last two columns show the Coulombic efficiency of hard carbon and HC- SiNx-0.4 electrodes in 50 cycles. Fig. 5b Columns from left to right represent the cycle number and specific capacity of HC-SiOC composites with increase volume of SiCl4 in 50 cycles. Last two columns show the Coulombic efficiency of hard carbon and HC- SiOC-0.4 electrodes in 50 cycles. Fig. 6, left top XPS fitting data (Si 2p) of HC-SiNx-0.4 electrode before reduction. Fig. 6, left bottom XPS fitting data (Si 2p) of HC-SiNx-0.4 electrode after reduction. Fig. 6, right top XPS fitting data (Si 2p) of HC-SiOC-0.4 electrode before reduction. Fig. 6, right bottom XPS fitting data (Si 2p) of HC-SiOC-0.4 electrode after reduction. Fig. 7a, top XPS fitting data (C 1s) of HC-SiNx-0.4 electrode before reduction. Fig. 7a, bottom XPS fitting data (C 1s) of HC-SiNx-0.4 electrode after reduction. Fig. 7b, top XPS fitting data (C 1s) of HC-SiOC-0.4 electrode before reduction. Fig. 7b, bottom XPS fitting data (C 1s) of HC-SiOC-0.4 electrode after reduction. Fig. S1a Each two columns show the voltage and specific capacity in first cycle. Columns from left to right represent HC-SiNx electrode with increase volume of SiCl4. Fig. S1b Each two columns show the voltage and specific capacity in first cycle. Columns from left to right represent HC-SiOC electrode with increase volume of SiCl4. Fig. S2 Each two columns show the X-ray diffraction intensity and 2 theta degree. Columns from left to right represent HC-SiOC composites with different calcination temperature. Fig. S3a First column represents the heating temperature, last two columns represent the relative mass and derivative mass of HC-SiNx-0.4 composite. Fig. S3b First column represents the heating temperature, last two columns represent the relative mass and derivative mass of HC-SiOC-0.4 composite. Fig. S4 left Raman data of HC-SiNx-0.8 composite. Fig. S4 right Raman data of HC-SiOC-0.8 composite. Fig. S5a Each two columns show the Raman scattering intensity and Raman shift. Columns from left to right represent HC-SiNx composites with increase volume of SiCl4. Fig. S5b Each two columns show the Raman scattering intensity and Raman shift. Columns from left to right represent HC-SiOC composites with increase volume of SiCl4. Fig. S6 Raman curve fitting data of HC-SiNx-0.4 composite. Fig. S7a Each two columns show the absorbed volume and relative pressure. Columns from left to right represent HC-SiNx composites with increase volume of SiCl4. Fig. S7b Each two columns show the absorbed volume and relative pressure. Columns from left to right represent HC-SiOC composites with increase volume of SiCl4. Fig. S8a Each two columns show the incremental pore volume and pore width. Columns from left to right represent HC-SiNx composites with increase volume of SiCl4. Fig. S8b Each two columns show the incremental pore volume and pore width. Columns from left to right represent HC-SiOC composites with increase volume of SiCl4. Fig. S9 XPS survey data of HC-SiNx-0.4 (first two columns) and HC-SiOC-0.4 electrodes. Fig. S10 left top XPS fitting data (Si 2p) of HC-SiNx-0.4 electrode before reduction without Ar+ etching. Fig. S10 left bottom XPS fitting data (Si 2p) of HC-SiNx-0.4 electrode after reduction without Ar+ etching. Fig. S10 right top XPS fitting data (Si 2p) of HC-SiOC-0.4 electrode before reduction without Ar+ etching. Fig. S10 right bottom XPS fitting data (Si 2p) of HC-SiOC-0.4 electrode after reduction without Ar+ etching. Fig. S11 XPS fitting data (N 1s) of HC-SiNx-0.4 electrode after reduction with 5 min Ar+ etching. Fig. S12a Each four columns show the first cycle differential capacity and voltage. Columns from left to right represent HC-SiNx electrode with increase volume of SiCl4. Fig. S12b Each four columns show the first cycle differential capacity and voltage. Columns from left to right represent HC-SiOC electrode with increase volume of SiCl4. Fig. S14a Each two columns show the differential capacity and voltage. Columns from left to right represent 2nd and 50th cycle of HC-SiNx-0.4, respectively. Fig. S14b Each two columns show the differential capacity and voltage. Columns from left to right represent 2nd and 50th cycle of HC-SiOC-0.4 electrode, respectively. Fig. S15a Each two columns show the differential capacity and voltage. Columns from left to right represent 2nd and 50th cycle of HC-N2, respectively. Fig. S15b Each two columns show the differential capacity and voltage. Columns from left to right represent 2nd and 50th cycle of HC-Ar, respectively. Fig. S16a Columns represent Nyquist plot data of HC-SiNx-0.4 electrode before and after 50 cycles. Fig. S16b Columns represent Nyquist plot data of HC-SiOC-0.4 electrode before and after 50 cycles. Fig. S17a Columns represent Nyquist plot data of HC-N2 electrode before and after 50 cycles. Fig. S17b Columns represent Nyquist plot data of HC-Ar electrode before and after 50 cycles. Fig. S18a Three columns represent the binding energy, etching time and intensity of HC-SiNx-0.4 electrode (C 1s), respectively. Fig. S18b Three columns represent the binding energy, etching time and intensity of HC-SiOC-0.4 electrode (C 1s), respectively. Fig. S19 left top XPS fitting data (C 1s) of HC-SiNx-0.4 electrode after reduction with 1 min Ar+ etching. Fig. S19 left middle XPS fitting data (C 1s) of HC-SiNx-0.4 electrode after reduction with 3 min Ar+ etching. Fig. S19 left bottom XPS fitting data (C 1s) of HC-SiNx-0.4 electrode after reduction with 5 min Ar+ etching. Fig. S19 right top XPS fitting data (C 1s) of HC-SiOC-0.4 electrode after reduction with 1 min Ar+ etching. Fig. S19 right middle XPS fitting data (C 1s) of HC-SiOC-0.4 electrode after reduction with 3 min Ar+ etching. Fig. S19 right bottom XPS fitting data (C 1s) of HC-SiOC-0.4 electrode after reduction with 5 min Ar+ etching. Licence: CC BY Related projects: EP/N024303/1 Date that the file was created: October 2021