High-voltage aluminum-sulfur/selenium battery based on sulfur/selenium cation reaction

The invention discloses a high-voltage aluminum-sulfur/selenium battery based on sulfur/selenium cation reaction, and belongs to the technical field of aluminum ion batteries. According to the technical scheme, (1) the aluminum-sulfur/selenium battery structurally comprises a SeS < x >/C composite positive electrode, a diaphragm, electrolyte and an Al negative electrode in sequence, and the SeS < x >/C composite positive electrode is formed by compounding elemental sulfur or selenium or a sulfur-selenium compound with a carbon material; (2) the aluminum-sulfur/selenium battery obtained in the step (1) is subjected to reversible charging and discharging between 0.1 V and 2.5 V (vs.Al < 3 + >/Al), multi-electron transfer related to S and Se cations occurs in the charging and discharging process, the highest specific discharge capacity can reach 1700 mAh g , and the discharge voltage platform is larger than or equal to 1.5 V (vs.Al < 3 + >/Al). 一种基于硫/硒阳离子反应的高电压铝-硫/硒电池，属于铝离子电池技术领域。实现硫/硒阳离子氧化/还原反应的高电压铝-硫/硒电池，