Haghighat-Shishavan, Safa Nazarian-Samani, Masoud Nazarian-Samani, Mahboobeh Roh, Ha-Kyung Chung, Kyung-Yoon Oh, Si-Hyoung Cho, Byung-Won Kashani-Bozorg, Seyed Farshid Kim, Kwang-Bum 2024-01-19T19:04:26Z 2024-01-19T19:04:26Z 2021-09-04 2019-09-11 1944-8244 https://pubs.kist.re.kr/handle/201004/119574 In this study, we synthesize two layered and amorphous structures of germanium phosphide (GeP5) and compare their electrochemical performances to better understand the role of layered, crystalline structures and their ability to control large volume expansions. We compare the results obtained with those of previous, conventional viewpoints addressing the effectiveness of amorphous phases in traditional anodes (Si, Ge, and Sn) to hinder electrode pulverization. By means of both comprehensive experimental characterizations and density functional theory calculations, we demonstrate that layered, crystalline GeP5 in a hybrid structure with multiwalled carbon nanotubes exhibits exceptionally good transport of electrons and electrolyte ions and tolerance to extensive volume changes and provides abundant reaction sites relative to an amorphous structure, resulting in a superior solid-electrolyte interphase layer and unprecedented initial Coulombic efficiencies in both Li-ion and Na-ion batteries. Moreover, the hybrid delivers excellent rate-capability (symmetric and asymmetric) performance and remarkable reversible discharge capacities, even at high current rates, realizing ultradurable cycles in both applications. The findings of this investigation are expected to offer insights into the design and application of layered materials in various devices. English American Chemical Society LARGE-CAPACITY LITHIUM PHOSPHORUS COMPOSITE Exceptionally Reversible Li-/Na-Ion Storage and Ultrastable Solid-Electrolyte Interphase in Layered GeP5 Anode Article 10.1021/acsami.9b05900 1 ACS Applied Materials & Interfaces, v.11, no.36, pp.32815 - 32825 ACS Applied Materials & Interfaces 11 36 32815 32825 scie scopus 000486360500024 2-s2.0-85072056447 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article LARGE-CAPACITY LITHIUM PHOSPHORUS COMPOSITE germanium phosphide layered structure volume expansion control mass transportation solid-electrolyte interphase energy storage