Development and Verification of In-situ Characterization Methods for the Internal Structure of Lithium Batteries
Lithium battery materials react rapidly when in contact with air,resulting in changes in the original morphology.This is a bottleneck problem that urgently needs to be solved in the field of lithium battery research.Therefore,it is necessary to design an in-situ comprehensive characterization method that can perform microscale characterization of its unoxidized internal structure under the condition of air isolation.At present,traditional characterization methods such as FIB processing,SEM,EDS,EBSD,and TOF-SIMS are relatively independent,and there have been no reports on the application of completing all tests in disposable sample installation.We have established a set of in-situ characterization methods using a 70° pre-tilt sample holder.Based on conventional SEM,EDS,and EBSD,combined with FIB and TOF-SIMS technology,all tests can be completed in a vacuum environment with a one-time sample installation.In addition,we take lithium battery cathode materials for example to verify the feasibility of this method.This method can also be applied to other materials with similar structures and has a wide range of applications and broad prospects.
lithium batteriesin-situ characterization methodsfocus ion beam(FIB)time of flight secondary ion mass spectrometry(TOF-SIMS)
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维普
