TY - JOUR AU - Sun, Wenhao AU - Song, Zihao AU - Feng, Zhenxing AU - Huang, Yaqin AU - Xu, Zhichuan J. AU - Lu, Yi‑Chun AU - Zou, Qingli PY - 2022/11/14 Y2 - 2024/03/29 TI - Carbon-Nitride-Based Materials for Advanced Lithium–Sulfur Batteries JF - Nano-Micro Letters JA - Nano-Micro Lett VL - 14 IS - SE - Reviews DO - 10.1007/s40820-022-00954-x UR - https://nmlett.org/index.php/nml/article/view/1219 SP - 222 AB - <p>Lithium–sulfur (Li–S) batteries are promising candidates for next-generation energy storage systems owing to their high energy density and low cost. However, critical challenges including severe shuttling of lithium polysulfides&nbsp;(LiPSs) and sluggish redox kinetics limit the practical application of Li–S batteries. Carbon nitrides (C<sub><em>x</em></sub>N<sub><em>y</em></sub>), represented by graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>), provide new opportunities for overcoming these challenges. With a graphene-like structure and high pyridinic-N content, g-C<sub>3</sub>N<sub>4</sub> can effectively immobilize LiPSs and enhance the redox kinetics of S species. In addition, its structure and properties including electronic conductivity and catalytic activity can be regulated by simple methods that facilitate its application in Li–S batteries. Here, the recent progress of applying C<sub>x</sub>N<sub>y</sub>-based materials including the optimized g-C<sub>3</sub>N<sub>4</sub>, g-C<sub>3</sub>N<sub>4</sub>-based composites, and other novel C<sub><em>x</em></sub>N<sub><em>y</em></sub> materials is systematically reviewed in Li–S batteries, with a focus on the structure–activity relationship. The limitations of existing C<sub><em>x</em></sub>N<sub><em>y</em></sub>-based materials are identified, and the perspectives on the rational design of advanced C<sub><em>x</em></sub>N<sub><em>y</em></sub>-based materials are provided for high-performance Li–S batteries.</p><p>Highlights:</p><p>1 The recent advances in C<sub>x</sub>N<sub>y</sub>-based materials including the optimized g-C<sub>3</sub>N<sub>4</sub>, g-C<sub>3</sub>N<sub>4</sub>-based composites, and other novel C<sub>x</sub>N<sub>y</sub> materials are summarized.<br>2 The applications of C<sub>x</sub>N<sub>y</sub>-based materials in Li–S batteries are systematically discussed with a focus on the structure–activity relationship.<br>3 The perspectives on the rational design of advanced C<sub>x</sub>N<sub>y</sub>-based materials for high-performance Li–S batteries are provided.</p> ER -