%0 Journal Article %1 Long:2015:ACS-Appl-Mater-Interfaces:25923036 %A Long, d u H %A Jeong, M G %A Lee, Y S %A Choi, W %A Lee, J K %A Oh, I H %A Jung, H G %D 2015 %J ACS Appl Mater Interfaces %K aempl batteries %N 19 %P 10250-10257 %R 10.1021/acsami.5b00776 %T Coating lithium titanate with nitrogen-doped carbon by simple refluxing for high-power lithium-ion batteries %U http://www.ncbi.nlm.nih.gov/pubmed/25923036 %V 7 %X Nitrogen-doped carbon is coated on lithium titanate (Li4Ti5O12, LTO) via a simple chemical refluxing process, using ethylenediamine (EDA) as the carbon and nitrogen source. The process incorporates a carbon coating doped with a relatively high amount of nitrogen to form a conducting network on the LTO matrix. The introduction of N dopants in the carbon matrix leads to a higher density of C vacancies, resulting in improved lithium-ion diffusion. The uniform coating of nitrogen-doped carbon on Li4Ti5O12 (CN-LTO) enhances the electronic conductivity of a CN-LTO electrode and the corresponding electrochemical properties of the cell employing the electrode. The results of our study demonstrate that the CN-LTO anode exhibits higher rate capability and cycling performance over 100 cycles. From the electrochemical tests performed, the specific capacity of CN-LTO electrode at higher rates of 20 and 50 C are found to be 140.7 and 82.3 mAh g(-1), respectively. In addition, the CN-Li4Ti5O12 anode attained higher capacity retention of 100% at 1 C rate after 100 cycles and 92.9% at 10 C rate after 300 cycles.

@article{Long:2015:ACS-Appl-Mater-Interfaces:25923036, abstract = {Nitrogen-doped carbon is coated on lithium titanate (Li4Ti5O12, LTO) via a simple chemical refluxing process, using ethylenediamine (EDA) as the carbon and nitrogen source. The process incorporates a carbon coating doped with a relatively high amount of nitrogen to form a conducting network on the LTO matrix. The introduction of N dopants in the carbon matrix leads to a higher density of C vacancies, resulting in improved lithium-ion diffusion. The uniform coating of nitrogen-doped carbon on Li4Ti5O12 (CN-LTO) enhances the electronic conductivity of a CN-LTO electrode and the corresponding electrochemical properties of the cell employing the electrode. The results of our study demonstrate that the CN-LTO anode exhibits higher rate capability and cycling performance over 100 cycles. From the electrochemical tests performed, the specific capacity of CN-LTO electrode at higher rates of 20 and 50 C are found to be 140.7 and 82.3 mAh g(-1), respectively. In addition, the CN-Li4Ti5O12 anode attained higher capacity retention of 100% at 1 C rate after 100 cycles and 92.9% at 10 C rate after 300 cycles.}, added-at = {2015-10-08T05:20:19.000+0200}, author = {Long, d u H and Jeong, M G and Lee, Y S and Choi, W and Lee, J K and Oh, I H and Jung, H G}, biburl = {https://www.bibsonomy.org/bibtex/216b7d0f15e968b3fbbeb170391c56739/l1th1um}, description = {Coating lithium titanate with nitrogen-doped carbon by simple refluxing for high-power lithium-ion batteries. - PubMed - NCBI}, doi = {10.1021/acsami.5b00776}, interhash = {9209c915f7056dac1d4e3f3c3f0f8bfc}, intrahash = {16b7d0f15e968b3fbbeb170391c56739}, journal = {ACS Appl Mater Interfaces}, keywords = {aempl batteries}, month = may, number = 19, pages = {10250-10257}, pmid = {25923036}, timestamp = {2015-10-08T05:26:12.000+0200}, title = {Coating lithium titanate with nitrogen-doped carbon by simple refluxing for high-power lithium-ion batteries}, url = {http://www.ncbi.nlm.nih.gov/pubmed/25923036}, volume = 7, year = 2015 }