当前位置:
X-MOL 学术
›
Electrochim. Acta
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Heterostructured SnS2-SnS nanosheets confined into graphene as a superior rate and high capacity anode for lithium/sodium storage
Electrochimica Acta ( IF 5.5 ) Pub Date : 2025-01-22 , DOI: 10.1016/j.electacta.2025.145730
Xiao-Xiao Yang, Yun-Lei Hou, Bo-Han Zhang, Jing-Zhou Chen, Dong-Lin Zhao
Electrochimica Acta ( IF 5.5 ) Pub Date : 2025-01-22 , DOI: 10.1016/j.electacta.2025.145730
Xiao-Xiao Yang, Yun-Lei Hou, Bo-Han Zhang, Jing-Zhou Chen, Dong-Lin Zhao
The high theoretical capacity and structural superiority of tin disulfide (SnS2) have made it a prominent research focus. However, the utilization of SnS2 in lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs) is encumbered by its intrinsic low conductivity and volume expansion. In this study, we synthesized a sheet-like SnS2-rGO composite via a one-step hydrothermal process, followed by calcination to obtain heterostructured SnS2@SnS integrated with ultrathin reduced graphene oxide nanosheets (SnS2@SnS-rGO). The phase interface within the heterostructure is characterized by a large number of lattice defects, which augment the ionic reaction kinetics, thereby facilitating the transfer of electrons and the diffusion of ions. The SnS2@SnS nanosheets are confined within a graphene network skeleton, thus ensuring structural integrity of SnS2-SnS composite. Surprisingly, the SnS2@SnS-rGO anode exhibits an impressive lithium storage capacity of 1367 mAh g-1 (0.1 A g-1) and 685.7 mAh g-1 (5 A g-1). Furthermore, when utilized for sodium-ion storage, the SnS2@SnS-rGO anode achieves a capacity of 608 mAh g-1, showcasing its outstanding capabilities for both lithium and sodium storage.
中文翻译:
异质结构 SnS2-SnS 纳米片局限于石墨烯中,作为用于锂/钠存储的优越速率和高容量阳极
二硫化锡 (SnS 2 ) 的高理论容量和结构优越性使其成为突出的研究热点。然而,SnS 2 在锂离子电池 (LIB) 和钠离子电池 (SIB) 中的使用受到其固有的低导电性和体积膨胀的阻碍。在本研究中,我们通过一步水热工艺合成了片状 SnS 2 -rGO 复合材料,然后煅烧得到异质结构的 SnS 2 @SnS与超薄还原氧化石墨烯纳米片 (SnS 2 @SnS-rGO) 集成。异质结构内的相界面以大量晶格缺陷为特征,这增强了离子反应动力学,从而促进了电子的转移和离子的扩散。SnS 2 @SnS纳米片被限制在石墨烯网络骨架内,从而确保了 SnS 2 -SnS 复合材料的结构完整性。令人惊讶的是,SnS 2 @SnS-rGO 阳极表现出令人印象深刻的 1367 mAh g -1 (0.1 A g -1 ) 和 685.7 mAh g -1 (5 A g -1 ) 的锂存储容量。此外,当用于钠离子存储时,SnS 2 @SnS-rGO 阳极的容量达到 608 mAh g -1 ,展示了其出色的锂和钠存储能力。
更新日期:2025-01-22
中文翻译:
异质结构 SnS2-SnS 纳米片局限于石墨烯中,作为用于锂/钠存储的优越速率和高容量阳极
二硫化锡 (SnS 2 ) 的高理论容量和结构优越性使其成为突出的研究热点。然而,SnS 2 在锂离子电池 (LIB) 和钠离子电池 (SIB) 中的使用受到其固有的低导电性和体积膨胀的阻碍。在本研究中,我们通过一步水热工艺合成了片状 SnS 2 -rGO 复合材料,然后煅烧得到异质结构的 SnS 2 @SnS与超薄还原氧化石墨烯纳米片 (SnS 2 @SnS-rGO) 集成。异质结构内的相界面以大量晶格缺陷为特征,这增强了离子反应动力学,从而促进了电子的转移和离子的扩散。SnS 2 @SnS纳米片被限制在石墨烯网络骨架内,从而确保了 SnS 2 -SnS 复合材料的结构完整性。令人惊讶的是,SnS 2 @SnS-rGO 阳极表现出令人印象深刻的 1367 mAh g -1 (0.1 A g -1 ) 和 685.7 mAh g -1 (5 A g -1 ) 的锂存储容量。此外,当用于钠离子存储时,SnS 2 @SnS-rGO 阳极的容量达到 608 mAh g -1 ,展示了其出色的锂和钠存储能力。