新型炭材料（中英文）2025，Vol.40Issue(5)：1074-1084,11.DOI:10.1016/S1872-5805(25)60970-X
富电子态硫宿主应用于高性能锌硫电池
An electron-rich sulfur host for advanced Zn-S batteries
摘要
Abstract
Aqueous Zn-S batteries have shown great potential in advanced en-ergy storage systems due to their low cost,high theoretical capacity,and in-trinsic safety.However,the slow kinet-ics and low electrical conductivity of sul-fur prevent the full use of their capacity,leading to poor cycling performance.We used graphite carbon nitride(g-C3N4)as the nitrogen source,and nitrogen-doped Ketjenblack(NKB)was synthesized by solid-phase calcination for use as the sulfur host.Results demonstrate that pyrrolic nitrogen serves as the primary catalytic active site in the sulfur reduction process.The high electronegativity of nitrogen significantly alters the charge distribution of the carbon matrix,changing the electron distribution around sulfur and rendering it electron-rich,which increases the interaction between S and Zn2+and accelerates the reduction kinetics.NKB also forms a three-dimensional cross-linked carbon sphere network,providing abundant defect sites and a large specific surface area,which facilitates electron transfer and improves electrolyte wettability.Combined with the contribution of the ZnI2 additive,the Zn-S battery prepared with the precursor of a g-C3N4∶KB ratio of 3∶4 achieved an ultrahigh discharge capacity of 2069 mAh g-1 at a current density of 1 A/g.It also had an excellent rate performance(1257 mAh g-1 at 10 A/g)and a long cycling stability(705 mAh g-1 after 180 cycles at 5 A/g).This study provides a simple and effective strategy for improving the reduction kinetics of the sulfur cathode in Zn-S batteries and design-ing advanced cathode materials.关键词
锌硫电池/氮掺杂科琴黑/催化转化/电子转移/正极材料Key words
Zn-S Batteries/Nitrogen-doped Ketjenblack/Catalysis/Electron transfer/Cathode分类
化学工程引用本文复制引用
陈佳骏,许阳,赵振新,梁明凡,丁洁,叶禹岑,肖庆源,王晓敏..富电子态硫宿主应用于高性能锌硫电池[J].新型炭材料（中英文）,2025,40(5):1074-1084,11.基金项目
The authors appreciate the support from Nation-al Natural Science Foundation of China(52301282,52072256),Key R&D program of Shanxi Province(202102030201006,202202070301016),Fundament-al Research Program of Shanxi Province(20210302124308,202303021212044),Natural Sci-ence Foundation of Shanxi Province(202303021212047),Innovation and Entrepreneur-ship Training Programme for College Students in Higher Education in Shanxi Province(20230086). 国家自然科学基金项目(52301282,52072256) （52301282,52072256）
山西省重点研发项目(202102030201006,202202070301016) （202102030201006,202202070301016）
山西省基础研究项目(20210302124308,202303021212044) （20210302124308,202303021212044）
山西省自然科学基金项目(202303021212047) （202303021212047）
山西省大学生创新创业训练计划项目(20230086). （20230086）
