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Lithium plating on graphite anode is triggered by harsh conditions of fast charge and low temperature, which significantly accelerates SOH (state of health) degradation and may cause safety issues of lithium ion batteries (LIBs). This paper has reviewed recent research progress of lithium plating on graphite anode. Firstly, we summarize the forming mechanisms of Li plating with corresponding influence factors, the detecting methods and hazard of Li plating. Then, approaches to suppress Li plating are discussed, including anode surface modification, electrolyte composition optimization and development of optimal charge strategies. Finally, we conclude and propose the remaining challenges and prospects in terms of mechanism research, detecting approaches, and suppressing methods of Li plating. This review highlights the development of Li plating research and plays a guiding rule of further study on Li plating in LIBs. Daozhong Hu (left) is currently a Ph.D. candidate under supervision of Prof. Feng Wu in the School of Materials Science and Engineering at Beijing Institute of Technology. He also works in China North Vehicle Research Institute as a researcher. His major research focuses on failure mechanisms of lithium-ion batteries, including Li plating mechanisms, thermal runaway mechanisms, solid-electrolyte interface reaction mechanisms. Lai Chen (middle) obtained his Ph.D. majoring in Environmental Engineering from Beijing Institute of Technology (BIT) in 2017, and is currently an associate professor at the School of Materials Science and Engineering at BIT. As the principal investigator, he has successfully hosted the National Natural Science Foundation of China, Young Elite Scientists Sponsorship Program by CAST,

Photocatalysis is considered a promising technology to alleviate the energy crisis and environmental pollution; however, developing photocatalysts with improved light absorption efficiency is still a challenge. In this work, an effective strategy was proposed to synthesize a highly functional ternary nanocomposite (g-C 3 N 4 /RGO/AZIS) by coupling broader light-absorbing Ag-doped ZnIn 2 S 4 (AZIS) nanoplates with ultrathin g-C 3 N 4 and reduced graphene oxide (RGO) nanosheets. The 2D-on-2D stacking nanostructure of the composite provides a compact heterojunction, enlarged interfaces, and enriched active sites, resulting in the accelerated separation and relocation kinetics of charge carriers. Benefiting from these advantages, the g-C 3 N 4 /RGO/AZIS nanocomposite with systematically optimized contents of RGO and AZIS can serve as an efficient bifunctional photocatalyst for both H 2 production from water splitting and methyl orange (MO) photodegradation under the irradiation of visible light. The H 2 production rate of the ternary nanocomposite is 658.5 μmol h −1 g −1 , which is 38 times higher than that of plain g-C 3 N 4 . The operation mechanism is proposed based on the results of scavenger tests and photoelectrochemical analysis. The formation of a type-II heterostructure between AZIS nanoplates and g-C 3 N 4 nanosheets along with RGO with lower potential can maximize the separation efficiency of photogenerated electron−hole pairs and decrease the charge recombination. This work provides a viable strategy to develop bifunctional photocatalysts with enhanced performance for both H 2 production and degradation of organic dyes. KEYWORDS: photocatalysis, g-C 3 N 4 , reduced graphene oxide, nanocomposite, Ag-doped ZnIn 2 S 4