Synergistic Interaction of Ternary Ni-Co-Cu Chalcogenides Confined in Nanosheets Array to Advance Supercapacitors and Solar Steam Generation
Synergistic Interaction of Ternary Ni-Co-Cu Chalcogenides Confined in Nanosheets Array to Advance Supercapacitors and Solar Steam Generation
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限制在纳米片阵列中的三元 Ni-Co-Cu 硫属化物的协同相互作用，以促进超级电容器和太阳能蒸汽发电
DOI：
10.1002/solr.202100021
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发表时间：
2021
期刊：
影响因子：
7.9
通讯作者：
Liangliang Zhu
中科院分区：
文献类型：
--
作者：
Ting Zhu;Zhiliang He;Yuanfu Ren;Wei Zeng;Jian Mao;Liangliang Zhu
采用一种简单的原位合成方法制备了由三元Ni、−、Co、−、Cu等硫系化合物组成的泡沫铜(CF)负载的三维纳米片阵列。具体地说，在碳纤维骨架上合成了高电活性的Ni-−-Co二元硫化物，而铜物种从碳纤维迁移到Ni-−-Co纳米片上，导致了三元金属硫化物(Ni-−-Co-−-Cu-−-S，NCCS)的原位生成。由于镍、钴和铜硫化物在纳米薄片中的协同作用，这种NCCS材料表现出良好的机械稳定性、较大的比表面积和增强的导电性。结果表明，NCCS作为超级电容器电极具有较高的比电容(750 mF cm−2AT 100 mA cm−2)和良好的循环性能(10 000次循环后97.14%)。此外，NCCS的3D多孔分级纳米结构提供了纳米承压水分子通道，实现了高产量的太阳能蒸汽发电，在1次太阳辐射下的蒸发率提高到2.48 kg m−2 h−1。
Copper foam (CF)‐supported 3D nanosheets array composed of ternary Ni−Co−Cu chalcogenides are prepared by a simple in situ formation process. Specifically, a highly electroactive Ni−Co binary sulfide in nanosheets is synthesized against the CF backbone, whereas the copper species migrate from the CF to the Ni−Co nanosheets, leading to the in situ formation of the ternary metallic sulfide (Ni−Co−Cu−S, NCCS). Due to the synergistic interaction of Ni, Co, and Cu sulfides confined in nanosheets, this NCCS material demonstrates good mechanical robustness, a large surface area, and enhanced electric conductivity. As a result, the NCCS exhibits a high specific capacitance (750 mF cm−2at 100 mA cm−2) with good cycling performance (97.14% after 10 000 cycles) when used as supercapacitor electrodes. In addition, the 3D porous hierarchical nanostructure of NCCS provides nanoconfined water molecule channels to achieve high‐yield solar steam generation, delivering an enhanced evaporation rate of 2.48 kg m−2h−1under 1 sun irradiation.