Gao, Caitian Kim, Nam Dong Salvatierra, Rodrigo Villegas Lee, Seoung-Ki Li, Lei Li, Yilun Sha, Junwei Silva, Gladys A. Lopez Fei, Huilong Xie, Erqing Tour, James M. 2024-01-20T00:31:23Z 2024-01-20T00:31:23Z 2021-09-05 2017-10 0008-6223 https://pubs.kist.re.kr/handle/201004/122211 Germanium is a promising anode for lithium ion batteries (LIB) because of its potential rate capability and high theoretical specific capacity. Here we demonstrate a seamlessly connected graphene and carbon nanotube (GCNT) hybrid that serves as an integral current collector for a Ge anode. A vertically aligned CNT (VA-CNT) forest grown on graphene provides a high surface area for Ge deposition. The seamless connection between graphene and VA-CNT facilitates electron transport from the Ge to the Cu current collector. Graphene serves to alleviate mechanical strain between the electrode and current collector. The mechanical resilience of the GCNT lessens Ge pulverization on charge/discharge of the LIB. As a result, the Ge/GCNT anode has a high specific capacity of 1315 mAh/g after 200 cycles at 0.5 A/g and a high rate performance of 803 mAh/g at 40 A/g. (C) 2017 Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD BATTERY ANODES LARGE-AREA HIGH-CAPACITY GE NANOWIRES PERFORMANCE ELECTRODES STORAGE NANOPARTICLES COMPOSITE FILMS Germanium on seamless graphene carbon nanotube hybrids for lithium ion anodes Article 10.1016/j.carbon.2017.07.081 1 CARBON, v.123, pp.433 - 439 CARBON 123 433 439 scie scopus 000410369600051 2-s2.0-85026372754 Chemistry, Physical Materials Science, Multidisciplinary Chemistry Materials Science Article BATTERY ANODES LARGE-AREA HIGH-CAPACITY GE NANOWIRES PERFORMANCE ELECTRODES STORAGE NANOPARTICLES COMPOSITE FILMS Graphene carbon nanotube hybrid Seamless connection Germanium Lithium ion batteries Rate capability