Multifunctional Li2O-2B2O3 coating for enhancing high voltage electrochemical performances and thermal stability of layered structured LiNi0.5Co0.2Mn0.3O2 cathode materials for lithium ion batteries

Realizing Superior Cycle Stability of a Ni‐Rich Layered LiNi0.83Co0.12Mn0.05O2 Cathode with a B2O3 Surface Modification

“…The LBO was considered as a fast ionic conductor material that can not only suppress the side reactions, but also promote ion migration. [35,36] These results show that B 2 O 3 modification can improve the cyclic stability of cathode materials by B 3 + doping or B 2 O 3 coating. However, both the stability of bulk and surface structure may not be alleviated by a single coating or doping, which has a limited effect on improving the cyclic stability of Ni-rich cathode materials.…”

“…In addition, lithium boron oxide (LBO) could form during the cycle progress by the reaction between B 2 O 3 and active materials. The LBO was considered as a fast ionic conductor material that can not only suppress the side reactions, but also promote ion migration …”

Improvement of Cycleability and Rate‐Capability of LiNi0.5Co0.2Mn0.3O2 Cathode Materials Coated with Lithium Boron Oxide by an Antisolvent Precipitation Method

“…Wang et al. used lithium boron oxide having a high ion conductivity as a coating material for LiNi 0.5 Co 0.2 Mn 0.3 O 2 , which successfully reduced the over‐potential at the cathode particle/electrolyte interface . However our preliminarily study revealed that LiNi 0.5 Co 0.2 Mn 0.3 O 2 cathode coated with lithium boron oxide by a conventional impregnation method did not remarkably improve the cycle performance.…”

Sur‐/Interface Engineering of Hierarchical LiNi0.6Mn0.2Co0.2O2@LiCoPO4@Graphene Architectures as Promising High‐Voltage Cathodes toward Advanced Li‐Ion Batteries

“…Expectedly, the intensity of the peak located at ≈529.29 eV weakens considerably after LCP coating, while the peak for the LCP counterpart raises at the higher BE, which further demonstrates the existence of PO 4 3− . As for the Co 2p spectra, as shown in Figure c, the Co 2p 3/2 peak of the LNMC is centered at ≈780.19 eV, corresponding to the trivalent cobalt in the layered oxides . Due to the Co(II) generating more intense shake‐up satellite in high spin states, it turns out to be one critical criterion to confirm the presence of cobalt (II) by judging shake‐up satellite peaks in the Co2p 1/2 and Co2p 3/2 .…”

“…As established well, sur‐/interface engineering plays a crucial role in enhancing thermal stability and electrochemical behaviors of Ni‐based cathodes for LIBs . Various compounds (Al 2 O 3 , SiO 2 , TiO 2 , ZrO 2 , Li 2 O·2B 2 O 3 , and AlF 3 ) depressing the surface side reactions, and some other materials (Li 3 PO 4 , Li 3 VO 4 , and Li 2 TiO 3 ) improving ionic conductivity, as well as several composites (AlPO 4 , V 2 O 5 , Co 3 (PO 4 ) 2 ) consuming the surface residual lithium have been put forward, and successfully applied to ameliorate the interfacial structural stability of Ni‐based electrodes. Admittedly, all these coating phases to some extent play a constructive role in propelling the practical application of Ni‐based cathodes.…”