Publications [#337039] of Jie Liu

Journal Articles

1. Liu, X; Qian, T; Liu, J; Tian, J; Zhang, L; Yan, C, Greatly Improved Conductivity of Double-Chain Polymer Network Binder for High Sulfur Loading Lithium–Sulfur Batteries with a Low Electrolyte/Sulfur Ratio, Small, vol. 14 no. 33 (August, 2018), pp. 1801536-1801536, WILEY [doi]
   (last updated on 2026/01/16)

   Abstract:
   Binders have been considered to play a key role in realizing high-energy-density lithium–sulfur batteries. However, the accompanying problems of limited conductivity and inferior affinity of soluble polysulfide intermediates bring down their comprehensive performance for practical applications. Herein, the synthesis of a novel double-chain polymer network (DCP) binder by polymerizing 4,4′-biphenyldisulfonic acid connected pyrrole monomer onto viscous sodium carboxymethyl cellulose matrix, yielding a primary crystal structure is reported. Consequently, the resulted binder enables superior rate performance from 0.2 C (1326.9 mAh g⁻¹) to 4 C (701.4 mAh g⁻¹). Moreover, a high sulfur loading of 9.8 mg cm⁻² and a low electrolyte/sulfur ratio (5:1, µL mg⁻¹) are achieved, exhibiting a high area capacity of 9.2 mAh cm⁻². In situ X-ray diffraction analysis is conducted to monitor the structural modifications of the cathode, confirming the occurrence of sulfur reduction/recrystallization during charge–discharge process. In addition, in situ UV–vis measurements demonstrate that DCP binder impedes the polysulfide migration, thereby giving rise to high capacity retention for 400 cycles.