LiNi(1)(/)(3)Mn(1)(/)(3)Co(1)(/)(3)O(2)with morphology optimized for novel concept of3DLi accumulator

0531781 - ÚFCH JH 2021 RIV US eng J - Článek v odborném periodiku
Zukalová, Markéta - Zukal, Arnošt - Krýsová, Hana - Kavan, Ladislav - Procházka, J.
LiNi(1)(/)(3)Mn(1)(/)(3)Co(1)(/)(3)O(2)with morphology optimized for novel concept of3DLi accumulator.
International Journal of Energy Research. Roč. 44, JUN 2020 (2020), s. 9082-9092. ISSN 0363-907X. E-ISSN 1099-114X
Grant CEP: GA MPO FV20471
Institucionální podpora: RVO:61388955
Klíčová slova: tio2 anatase * layered lini1/3mn1/3co1/3o2 * structural-changes * thermal-stability * lithium insertion * cathode materials * storage * performance * challenges * 3D accumulator * hollow spheres * Li-ion batteries * LiNi1 * 3Mn1 * 3Co1 * 3o(2) * nmc111
Obor OECD: Physical chemistry
Impakt faktor: 5.164, rok: 2020
Způsob publikování: Omezený přístup

An array of LiNi1/3Mn1/3Co1/3O2(NMC 111) samples with a hollow-sphere morphology enabling the use of binder-free, millimeter-thick electrodes in a battery are prepared by a combination of ball milling, hydrothermal treatment and calcination. Materials are studied by powder X-ray diffraction, nitrogen adsorption measurements, X-ray fluorescence analysis, and scanning electron microscopy. Their electrochemical performance for Li(+)extraction/insertion is tested by cyclic voltammetry and galvanostatic chronopotentiometry on thin-film electrodes. Optimized materials, prepared by mechanical and thermal treatment with surface areas of 7 to 10 m(2)g(-1), provide charge capacity values of 141 to 156 mAh g(-1). The concentration of the crystalline phase in NMC 111 materials with a hollow-sphere morphology is found to be the decisive parameter for their galvanostatic cycling stability. Hollow spheres with well-developed NMC nanocrystals and a low concentration of amorphous phase in the walls, exhibiting excellent cycling stability and charge capacity in thin-film electrodes are incorporated into a NMC/graphite 3D-battery module. This 122 Ah/451 Wh 3D-battery provides 78% of theoretical capacity and 73% of theoretical energy after 10 formatting cycles. Additionally, the battery prototype exhibits stable performance over more than 200 cycles at C/10 rate. A series of analogous 3D Li accumulators, currently assembled and tested in a pilot plant, represent the first step toward large-scale production of novel 3D Li accumulator.
Trvalý link: http://hdl.handle.net/11104/0310398