当前位置:
X-MOL 学术
›
Ind. Eng. Chem. Res.
›
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.)
Molecularly Engineered Conductive Polymer Binder Enables Stable Lithium Storage of Si
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-01-30 , DOI: 10.1021/acs.iecr.9b05838 Xiaoying He 1, 2 , Rui Han 1 , Pinxian Jiang 2, 3 , Yungui Chen 2, 3 , Wei Liu 2, 3
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-01-30 , DOI: 10.1021/acs.iecr.9b05838 Xiaoying He 1, 2 , Rui Han 1 , Pinxian Jiang 2, 3 , Yungui Chen 2, 3 , Wei Liu 2, 3
Affiliation
Silicon anodes are a key component for high-energy lithium-ion batteries (LIBs). Electrode binder engineering for Si anodes has been calling increasing awareness. Here, we report a series of molecularly engineered conductive polymer binders, that is, star-like polyaniline (s-PANi), cross-linked polyaniline (c-PANi), and linear polyaniline (l-PANi). As a conductive binder, the molecular structure of PANi was found to play a key role in determining the performance of a Si anode: a reversible capacity of 1776 mAh g–1 after 100 cycles at 500 mA g–1 was achieved using s-PANi as the conductive binder, far superior than systems adopting c-PANi, l-PANi, and conventional carboxymethyl cellulose binders. The correlation between the binder molecule structure and Si anode performance is found: a star-like molecular structure is more advantageous over the heavily cross-linked structure for it offers a 3D-conjugated conductive network that is more resistant to cycle-induced large strain.
中文翻译:
分子工程导电聚合物粘合剂可稳定储存锂
硅阳极是高能锂离子电池(LIB)的关键组件。硅阳极的电极粘合剂工程已经引起人们越来越多的关注。在这里,我们报告了一系列分子工程化的导电聚合物粘合剂,即星形聚苯胺(s-PANi),交联聚苯胺(c-PANi)和线性聚苯胺(1-PANi)。作为导电性粘结剂,聚苯胺的分子结构被发现在确定的Si的阳极的性能发挥了关键作用:1776毫安g的可逆容量-1以500mA克100次循环后-1使用s-PANi作为导电粘合剂可实现比使用c-PANi,l-PANi和常规羧甲基纤维素粘合剂的系统更好的性能。发现了粘合剂分子结构与Si阳极性能之间的相关性:星形分子结构比重度交联的结构更具优势,因为它提供了3D共轭的导电网络,该网络更耐循环诱导的大应变。
更新日期:2020-01-31
中文翻译:
分子工程导电聚合物粘合剂可稳定储存锂
硅阳极是高能锂离子电池(LIB)的关键组件。硅阳极的电极粘合剂工程已经引起人们越来越多的关注。在这里,我们报告了一系列分子工程化的导电聚合物粘合剂,即星形聚苯胺(s-PANi),交联聚苯胺(c-PANi)和线性聚苯胺(1-PANi)。作为导电性粘结剂,聚苯胺的分子结构被发现在确定的Si的阳极的性能发挥了关键作用:1776毫安g的可逆容量-1以500mA克100次循环后-1使用s-PANi作为导电粘合剂可实现比使用c-PANi,l-PANi和常规羧甲基纤维素粘合剂的系统更好的性能。发现了粘合剂分子结构与Si阳极性能之间的相关性:星形分子结构比重度交联的结构更具优势,因为它提供了3D共轭的导电网络,该网络更耐循环诱导的大应变。