Huang Yi, Jiang Yu, Ma Zhaofei, Zhang Yan, Zheng Xianfeng, Yan Xuemin, Deng Xiaoqing, Xiao Wei, Tang Haolin
College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, China.
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China.
Nanomaterials (Basel). 2019 Mar 20;9(3):469. doi: 10.3390/nano9030469.
WS₂ is considered as a potential anode material for lithium ion batteries (LIBs) with superior theoretical capacity and stable structure with two-dimensional which facilitates to the transportation and storage of lithium ion. Nevertheless, the commercial recognition of WS₂ has been impeded by the intrinsic properties of WS₂, including poor electrical conductivity and large volume expansion. Herein, a seaweed-liked WS₂/reduced graphene oxide (rGO) composites has been fabricated through a procedure involving the self-assembling of WO₄, hexadecyl trimethyl ammonium ion with graphene oxide (GO) and the subsequent thermal treatment. The WS₂/rGO nanocomposite exhibited the outstanding electrochemical property with a stable and remarkable capacity (507.7 mAh·g) at 1.0 A·g even after 1000 cycles. This advanced electrochemical property is due to its seaweed-liked feature which can bring in plentiful active sites, ameliorate the stresses arisen from volume variations and increase charge transfer rate.
二硫化钨（WS₂）被认为是一种具有潜力的锂离子电池负极材料，它具有优异的理论容量和二维稳定结构，有利于锂离子的传输和存储。然而，WS₂的商业应用受到其固有特性的阻碍，包括导电性差和体积膨胀大。在此，通过一种涉及钨酸根、十六烷基三甲基铵离子与氧化石墨烯（GO）自组装以及随后热处理的方法制备了一种海藻状的WS₂/还原氧化石墨烯（rGO）复合材料。WS₂/rGO纳米复合材料表现出优异的电化学性能，即使在1.0 A·g的电流密度下循环1000次后，仍具有稳定且显著的容量（507.7 mAh·g）。这种先进的电化学性能归因于其海藻状结构，该结构能够引入大量活性位点，缓解体积变化产生的应力并提高电荷转移速率。
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