Open AccessSolar‐Driven Rechargeable Lithium–Sulfur Battery
Author(s) -
Chen Peng,
Li GuoRan,
Li TianTian,
Gao XuePing
Publication year - 2019
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.201900620
Subject(s) - chemical energy , battery (electricity) , energy transformation , materials science , solar energy , energy storage , energy conversion efficiency , lithium (medication) , nanotechnology , optoelectronics , chemistry , electrical engineering , engineering , power (physics) , organic chemistry , quantum mechanics , endocrinology , thermodynamics , medicine , physics
Solar cells and rechargeable batteries are two key technologies for energy conversion and storage in modern society. Here, an integrated solar‐driven rechargeable lithium–sulfur battery system using a joint carbon electrode in one structure unit is proposed. Specifically, three perovskite solar cells are assembled serially in a single substrate to photocharge a high energy lithium–sulfur (Li–S) battery, accompanied by direct conversion of the solar energy to chemical energy. In the subsequent discharge process, the chemical energy stored in the Li–S battery is further converted to electrical energy. Therefore, the newly designed battery is capable of achieving solar‐to‐chemical energy conversion under solar‐driven conditions, and subsequently delivering electrical energy from the stored chemical energy. With an optimized structure design, a high overall energy conversion efficiency of 5.14% is realized for the integrated battery. Moreover, owing to the self‐adjusting photocharge advantage, the battery system can retain high specific capacity up to 762.4 mAh g −1 under a high photocharge rate within 30 min, showing an effective photocharging feature.