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Heterostructured NiS2/ZnIn2S4 Realizing Toroid-like Li2O2 Deposition in Lithium-Oxygen Batteries with Low-Donor-Number Solvents.
ACS Nano ( IF 15.8 ) Pub Date : 2020-02-26 , DOI: 10.1021/acsnano.9b09646 Anjun Hu 1 , Weiqiang Lv 2 , Tianyu Lei 1 , Wei Chen 1 , Yin Hu 1 , Chaozhu Shu 3 , Xianfu Wang 1 , Lanxin Xue 1 , Jianwen Huang 1 , Xinchuan Du 1 , Hongbo Wang 1 , Kai Tang 1 , Chuanhui Gong 1 , Jun Zhu 1 , Weidong He 2 , Jianping Long 3 , Jie Xiong 1
ACS Nano ( IF 15.8 ) Pub Date : 2020-02-26 , DOI: 10.1021/acsnano.9b09646 Anjun Hu 1 , Weiqiang Lv 2 , Tianyu Lei 1 , Wei Chen 1 , Yin Hu 1 , Chaozhu Shu 3 , Xianfu Wang 1 , Lanxin Xue 1 , Jianwen Huang 1 , Xinchuan Du 1 , Hongbo Wang 1 , Kai Tang 1 , Chuanhui Gong 1 , Jun Zhu 1 , Weidong He 2 , Jianping Long 3 , Jie Xiong 1
Affiliation
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The aprotic lithium-oxygen (Li-O2) battery has triggered tremendous efforts for advanced energy storage due to the high energy density. However, realizing toroid-like Li2O2 deposition in low-donor-number (DN) solvents is still the intractable obstruction. Herein, a heterostructured NiS2/ZnIn2S4 is elaborately developed and investigated as a promising catalyst to regulate the Li2O2 deposition in low-DN solvents. The as-developed NiS2/ZnIn2S4 promotes interfacial electron transfer, regulates the adsorption energy of the reaction intermediates, and accelerates O-O bond cleavage, which are convincingly evidenced experimentally and theoretically. As a result, the toroid-like Li2O2 product is achieved in a Li-O2 battery with low-DN solvents via the solvation-mediated pathway, which demonstrates superb cyclability over 490 cycles and a high output capacity of 3682 mA h g-1. The interface engineering of heterostructure catalysts offers more possibilities for the realization of toroid-like Li2O2 in low-DN solvents, holding great promise in achieving practical applications of Li-O2 batteries as well as enlightening the material design in catalytic systems.
中文翻译：
异质结构化NiS2 / ZnIn2S4通过低供体号溶剂在锂氧电池中实现环形Li2O2沉积。
由于高能量密度，非质子锂氧（Li-O2）电池已经为高级能量存储做出了巨大努力。然而，在低供体数（DN）溶剂中实现环形的Li2O2沉积仍然是难以解决的障碍。本文中，精心开发了异质结构NiS2 / ZnIn2S4，并对其进行了研究，以期有望在低DN溶剂中调节Li2O2的沉积。已开发的NiS2 / ZnIn2S4促进界面电子转移，调节反应中间体的吸附能，并加速OO键裂解，这在实验和理论上都得到了有力的证明。结果，通过溶剂化介导的途径，在具有低DN溶剂的Li-O2电池中获得了类环状Li2O2产品，在490个循环中显示出极好的可循环性，并具有3682 mA h g-1的高输出容量。异质结构催化剂的界面工程为在低DN溶剂中实现环状Li2O2提供了更多的可能性，在实现Li-O2电池的实际应用以及启发催化系统的材料设计方面具有广阔的前景。
更新日期：2020-02-26
中文翻译：
异质结构化NiS2 / ZnIn2S4通过低供体号溶剂在锂氧电池中实现环形Li2O2沉积。
由于高能量密度，非质子锂氧（Li-O2）电池已经为高级能量存储做出了巨大努力。然而，在低供体数（DN）溶剂中实现环形的Li2O2沉积仍然是难以解决的障碍。本文中，精心开发了异质结构NiS2 / ZnIn2S4，并对其进行了研究，以期有望在低DN溶剂中调节Li2O2的沉积。已开发的NiS2 / ZnIn2S4促进界面电子转移，调节反应中间体的吸附能，并加速OO键裂解，这在实验和理论上都得到了有力的证明。结果，通过溶剂化介导的途径，在具有低DN溶剂的Li-O2电池中获得了类环状Li2O2产品，在490个循环中显示出极好的可循环性，并具有3682 mA h g-1的高输出容量。异质结构催化剂的界面工程为在低DN溶剂中实现环状Li2O2提供了更多的可能性，在实现Li-O2电池的实际应用以及启发催化系统的材料设计方面具有广阔的前景。
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