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Siwen Li Yongcheng Wang Sijia Peng Lijuan Zhang Abdullah M. Al‐Enizi Hui Zhang Xuhui Sun Gengfeng Zheng 《Liver Transplantation》2016,6(3)
One promising approach to hydrogen energy utilization from full water splitting relies on the successful development of earth‐abundant, efficient, and stable electrocatalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). Here, homologous Co–Ni‐based nanotube/nanosheet structures with tunable Co/Ni ratios, including hydroxides and nitrides, are grown on conductive substrates by a cation‐exchanging method to grow hydroxides, followed by anion exchanging to obtain corresponding nitrides. These hydroxide OER catalysts and nitride HER catalysts exhibit low overpotentials, small Tafel slopes, and high current densities, which are attributed to their large electrochemically reactive surface, 1D morphologies for charge conduction, and octahedral coordination states of metal ions for efficient catalytic activities. The homologous Co–Ni‐based nanotube hydroxides and nitrides suggest promising electrocatalysts for full water splitting with high efficiency, good stability, convenient fabrication, and low cost. 相似文献
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From Water Oxidation to Reduction: Homologous Ni–Co Based Nanowires as Complementary Water Splitting Electrocatalysts 下载免费PDF全文
Zheng Peng Dingsi Jia Abdullah M. Al‐Enizi Ahmed A. Elzatahry Gengfeng Zheng 《Liver Transplantation》2015,5(9)
A homologous Ni–Co based nanowire system, consisting of both nickel cobalt oxide and nickel cobalt sulfide nanowires, is developed for efficient, complementary water splitting. The spinel‐type nickel cobalt oxide (NiCo2O4) nanowires are hydrothermally synthesized and can serve as an excellent oxygen evolution reaction catalyst. Subsequent sulfurization of the NiCo2O4 nanowires leads to the formation of pyrite‐type nickel cobalt sulfide (Ni0.33Co0.67S2) nanowires. Due to the 1D nanowire morphology and enhanced charge transport capability, the Ni0.33Co0.67S2 nanowires function as an efficient, stable, and robust nonnoble metal electrocatalyst for hydrogen evolution reaction (HER), substantially exceeding CoS2 or NiS2 nanostructures synthesized under similar methods. The Ni0.33Co0.67S2 nanowires exhibit low onset potential of ?65, ?39, and ?50 mV versus reversible hydrogen electrode, Tafel slopes of 44, 68, and 118 mV dec?1 at acidic, neutral, and basic conditions, respectively, and excellent stability, comparable to the best reported non‐noble metal‐based HER catalysts. Furthermore, the homologous Ni0.33Co0.67S2 nanowires and NiCo2O4 nanowires are assembled into an all‐nanowire based water splitting electrolyzer with a current density of 5 mA cm?2 at a voltage as 1.65 V, thus suggesting a unique homologous, earth abundant material system for water splitting. 相似文献
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Hui‐Hui Li Chun‐Hua Cui Shuo Zhao Hong‐Bin Yao Min‐Rui Gao Feng‐Jia Fan Shu‐Hong Yu 《Liver Transplantation》2012,2(10):1149-1149
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Electrocatalysis: Reduced Mesoporous Co3O4 Nanowires as Efficient Water Oxidation Electrocatalysts and Supercapacitor Electrodes (Adv. Energy Mater. 16/2014) 下载免费PDF全文
Yongcheng Wang Tong Zhou Kun Jiang Peimei Da Zheng Peng Jing Tang Biao Kong Wen‐Bin Cai Zhongqin Yang Gengfeng Zheng 《Liver Transplantation》2014,4(16)
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Electrocatalysts: Unraveling Geometrical Site Confinement in Highly Efficient Iron‐Doped Electrocatalysts toward Oxygen Evolution Reaction (Adv. Energy Mater. 7/2018) 下载免费PDF全文
Sung‐Fu Hung Ying‐Ya Hsu Chia‐Jui Chang Chia‐Shuo Hsu Nian‐Tzu Suen Ting‐Shan Chan Hao Ming Chen 《Liver Transplantation》2018,8(7)
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Water Splitting: Ni3FeN Nanoparticles Derived from Ultrathin NiFe‐Layered Double Hydroxide Nanosheets: An Efficient Overall Water Splitting Electrocatalyst (Adv. Energy Mater. 10/2016) 下载免费PDF全文
Xiaodan Jia Yufei Zhao Guangbo Chen Lu Shang Run Shi Xiaofeng Kang Geoffrey I. N. Waterhouse Li‐Zhu Wu Chen‐Ho Tung Tierui Zhang 《Liver Transplantation》2016,6(10)
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Hydrogen Evolution: CdS Nanoparticle‐Decorated Cd Nanosheets for Efficient Visible Light‐Driven Photocatalytic Hydrogen Evolution (Adv. Energy Mater. 3/2016) 下载免费PDF全文
Lu Shang Bian Tong Huijun Yu Geoffrey I. N. Waterhouse Chao Zhou Yufei Zhao Muhammad Tahir Li‐Zhu Wu Chen‐Ho Tung Tierui Zhang 《Liver Transplantation》2016,6(3)
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Yueqing Wang Jizhen Ma Jun Wang Si Chen Huaisheng Wang Jintao Zhang 《Liver Transplantation》2019,9(5)
The development of highly efficient and durable electrocatalysts is crucial for overall water splitting. Herein, the in situ scaffolding formation of 3D Prussian blue analogues (PBAs) on a variety of 2D or 1D metal hydroxides/oxides to fabricate hierarchical nanostructures is first demonstrated. Typically, cobalt hydroxide or oxide nanoarrays are used as the precursor and structural oriented template for the subsequent growth of 3D PBA nanocubes. The mechanism study reveals that the interfacial scaffolding process can be reversibly controlled via the in situ ion exchange process with adjusting coordination ions. Thus, the facile, versatile strategy can extend to successfully fabricate a variety of hierarchical PBA‐based nanostructures including on cobalt fluoride hydroxide, copper hydroxide, monometal or bimetal nickel–cobalt hydroxides, cobalt oxide, and manganese oxide nanosheets with structural tailor‐ability and chemical diversity. More interestingly, the metal nitride derivatives obtained via controlled calcination process exhibit good electrocatalytic activity for water splitting with low overpotentials, and remarkable durability for 1200 h, thanks to the superior intrinsic activity of bimetal nature and the scrupulous hierarchical structure. This versatile strategy provides a paradigm for rational design of PBA‐based functional nanomaterials, which is highly promising in energy conversion, storage, and electrocatalytic fields. 相似文献