Chemically Bonded Sn Nanoparticles Using the Crosslinked Epoxy Binder for High Energy‐Density Li Ion Battery

Abstract

An excellent integrated anode (Sn-AB) is constructed by using epoxy (A)amine (B) glue binding with ultrafine Sn nanoparticles. The electrode with strong adhesion and tensile strength can effectively tolerate the large volume changes of Sn, thereby guaranteeing excellent Li-storage properties. The development of AB binder, therefore, provides a novel and potential tactics for enhancement of electrode integration and mechanical strength.

A Novel Multielement, Multiphase, and B‐Containing SiOx Composite as a Stable Anode Material for Li‐Ion Batteries

“…The initial discharge/charge capacities were determined to be 2278/1771, 2165/1680, 1898/1464, and 1724/1307 mAh g −1 for the samples prepared from the SiO–0.1LiBH 4 , SiO–0.2LiBH 4 , SiO–0.3LiBH 4 , and SiO–0.4LiBH 4 mixtures, respectively. Although these capacity values are lower than those of pristine SiO (2540/1969 mAh g −1 ) due to the dead weight of the inactive B, B 2 O 3 , and Li 2 SiO 3 , they are still more than three times greater than that of the conventional graphite anode (372 mAh g −1 ) . The corresponding first Columbic efficiencies were calculated as 77.7%, 77.6%, 77.1%, and 75.8%, and are very close to that of pristine SiO (77.5%), indicating that the initial charge/discharge efficiency was largely unaffected after reacting with LiBH 4.…”

“…Owing to their high energy density, high capacity, and long cycling life, lithium ion batteries (LIBs) have attracted much attention over the past two decades . However, the low theoretical specific capacity (372 mAh g −1 ) of carbon‐based anodes has been an important limiting factor for the commercial LIBs . This factor has stimulated intense interest in the search for novel electrode materials .…”

Reactive and Nonreactive Ball Milling of Tin‐Antimony (Sn‐Sb) Composites and Their Use as Electrodes for Sodium‐Ion Batteries with Glyme Electrolyte

“…Moreover, the use of CMC binders has been shown as effective in improving the capacity and cycle life of Sn electrodes. This has been explained by the strong interaction between Sn and the CMC binder due to its carboxylic groups . The initial electrode thicknesses (without the current collector) were around 15–18 μm for the samples ball milled for 6 h and 23–28 μm for the samples ball milled for 1 h. All experiments were performed with a current of 100 mA g −1 (0.13 C related to the theoretical capacity of SnSb).…”

Pressure‐Induced Synthesis of Homogeneously Dispersed Sn/SnO2/C Nanocomposites as Advanced Anodes for Lithium‐Ion Batteries

“…Currently, the main methods to alleviate the volume change in SnO x during cycling include preparing SnO x nanostructures, such as nanofibers, nanoparticles, and nanowires, fabricating porous SnO x , making SnO x particles space‐confined in 3D porous skeleton, designing new binder, such as the crosslinked epoxy binder and conductive polymer binder, and distributing SnO x particles into carbon matrix uniformly . Furthermore, the most effective route to ameliorate electrical conductivity of SnO x is to prepare composite with carbon materials .…”