Class B journals refer to academic journals with high influence and academic level, which are included in international retrieval systems such as SCI, SCI and EI. The following are some recommended B journals:

1.journalofmaterialschemistrya: This magazine is one of the top journals in the field of material chemistry, covering all aspects of material chemistry, including synthesis, characterization and application.

2. Energy and energy. EnvironmentalScience: This journal is an authoritative journal in the field of energy and environmental science, and has published many research papers on energy conversion, storage and utilization and environmental protection.

3. Chemistry Communications: This magazine is one of the top journals in the field of chemistry, and has published many research papers on organic chemistry, inorganic chemistry and analytical chemistry.

4.JournalofPhysicalChemistry: This journal is an authoritative journal in the field of physical chemistry, covering all aspects of physical chemistry, including theoretical calculation, experimental research and instrument development.

5. Biomaterials: This magazine is one of the top journals in the field of biomaterials, and has published many research papers on the design, synthesis and application of biomaterials.

6. Journal of Biochemistry: This magazine is an authoritative magazine in the field of biochemistry, covering all aspects of biochemistry, including protein structure, enzyme catalysis and metabolic pathway.

7.JournalofAppliedPhysics: This magazine is one of the top journals in the field of applied physics, and has published many research papers on optoelectronics, condensed matter physics and materials science.