SCHEDULED MAINTENANCE
A new lithium secondary battery system: the sulfur/lithium-ion battery
Abstract
A new lithium secondary battery system, the sulfur/lithium-ion battery, has been constructed by employing a lithium/Sn–C composite anode, a carbyne polysulfide cathode, and a carbonic ester electrolyte. Compared with a lithium/sulfur battery, the use of a lithium/Sn–C composite anode ensures the high safety of the new battery. Meanwhile, the novel battery possesses high-energy characteristics. It delivers a reversible capacity of 500 mA h g−1 after 50 cycles at a current density of 200 mA g−1, which ensures a stable specific energy of 410 W h kg−1. As all of the materials required for the new battery are readily available and low-cost, and the techniques are simple, this new battery has a strong potential for use in industry. Furthermore, there is considerable room for improvement of the energy density of the sulfur/lithium-ion battery, and the new battery is one of the most promising candidates for the next generation of high-performance rechargeable batteries.
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