Description of the Cover Picture

The cover picture is taken from the article“CuS Electrode for All-pH Electrolyte in Aqueous Batteries”. The pH of aqueous electrolyte might impact the battery′s electrochemical performance and even its normal operation. It is critical to develop an electrode that can work in different pH settings. Here,we report hydrothermal method and vulcanization treatment to successfully create copper sulfide nanosheet. It can store and transport nonmetal and metal ions as well as polyvalent ions with a high charge radius ratio,and function normally under a variety of pH conditions.