Summary of main observation and conclusion
The natural graphite (NG) uniformly coated with alumina ceramics (Al2O3) was successfully synthesized through sol‐gel method. The aluminum plastic film soft‐packed battery prepared using Al2O3‐coated NG as anode material exhibits excellent cycle performance and safety performance. The cycling retention of AN‐1 is 84.95% after 200 cycles at a rate of 1 C in a potential window ranging from 3.0 to 4.35 V, which is much greater than 75.07% of NG under the same test conditions. The result of the nail penetration tests shows that the successful nail penetration rate of the NG used as anode is 0%, while that of Al2O3 coated samples AN‐1 is 100%. The test results show that the Al2O3 coating could act as a solid electrolyte to suppress side reactions, improve cycle stability, and prevent a thermal runaway under mechanical abuse.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.