Necklace-like Si@C nanofibers as robust anode materials for high performance lithium ion batteries

Mechanisms and Product Options of Magnesiothermic Reduction of Silica to Silicon for Lithium-Ion Battery Applications

“…Another approach is combining Si with other materials of high stability and electrical conductivity like carbon, metal or metal oxides. Carbon materials (Terranova et al, 2014;Qi et al, 2020), including amorphous carbon (Hsu et al, 2020), graphene (Hsieh and Liu, 2020), graphite, carbon nanotubes, and fibers (Hieu et al, 2014;Chen et al, 2015;Cai et al, 2017;Liu et al, 2017;Kong et al, 2019), are the most researched ones, and carbon could always act as buffer layer for volume change of Si and increase the electrical conductivity of the whole composite. Composites of Si and these materials integrate advantages of high charge capacity of Si and fast carrier transportation and mechanical properties of carbon materials.…”

Thermal pyrolysis of Si@ZIF-67 into Si@N-doped CNTs towards highly stable lithium storage

“…Si anode with the highest theoretical specific capacity (4400 mAh g À1 ) presents the most competitive alternative to graphite among all the lithium storage materials [8,9]. The application of neat Si, however, is still hampered by its huge volume expansion (400%), causing electrode cracking, disintegration, and subsequent rapid capacity loss [10,11]. In addition, the sluggish lithiation/delithiation kinetics and the poor electronic conductivity of Si materials are also responsible for the rapid capacity decaying [12].…”

Hollow Fe3O4/carbon with surface mesopores derived from MOFs for enhanced lithium storage performance

“…In Fig. 4f, the peak at 284.9 eV is attributed to CAC/C@C in carbon materials, while the peak at 286.7, 289.6 and 288.7 eV related with CAO, C@O, and OAC@C, indicating part of C is bonded to O of Fe 3 O 4 [34][35][36]. The strong interaction between carbon materials and Fe 3 O 4 facilitates the electron transport.…”