Reconstruction-induced NiCu-based catalysts towards paired electrochemical refining

Li Shanlin; Ma Peijie; Gao ChunlangLiu LijiaWang XunluShakouri MohsenChernikov RomanWang KaiwenLiu DanminMa RuguangWang Jiacheng

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Reconstruction-induced NiCu-based catalysts towards paired electrochemical refining

机译：Reconstruction-induced NiCu-based catalysts towards paired electrochemical refining

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A paired electrochemical refinery toward the cathodic nitrate reduction reaction (NO3RR) and anodic glycerol oxidation reaction (GOR) driven by renewable electricity could generate high value-added ammonia and formic acid simultaneously. However, both cathode and anode electrocatalysts often suffer from low efficiency and unclear reconstruction. Herein, we prepare a non-noble NiCu-OH nanocomposite precatalyst composed of crystalline Cu-2(OH)(3)(NO3) and amorphous Ni(OH)(2), which can be reconstructed into high-activity and stable cathodic NO3RR and anodic GOR electrocatalysts under operating conditions. Various in situ and ex situ experiments demonstrate that NiCu-OH could convert into active Cu nanoparticles coupled with amorphous Ni(OH)(2) under cathodic NO3RR conditions. Meanwhile, under anodic GOR conditions, NiCu-OH-derived bimetal oxide (NiCuO) changes into active NiOOH species composited with Cu vacancy-rich CuO. Furthermore, an actual paired electrochemical refinery with the reconstructed NiCu-based catalysts toward the NO3RR and GOR shows a low potential of 1.37 V at a current density of 100 mA cm(-2) to continuously produce ammonium and formate. This study provides a new paradigm for the design of an electrochemical refinery with reconstructed non-noble electrocatalysts toward chemical upgradation.

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《Energy & environmental science: EES》 |2022年第7期|3004-3014|共11页
作者
Li Shanlin; Ma Peijie; Gao ChunlangLiu LijiaWang XunluShakouri MohsenChernikov RomanWang KaiwenLiu DanminMa RuguangWang Jiacheng;
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Chinese Acad Sci, State Key Lab High Performance Ceram & Superfine, Shanghai Inst Ceram, Shanghai 200050, Peoples R China|Beijing Univ Technol, Beijing Key Lab Microstruct & Properties Solid, Fac Mat & Mfg, Beijing 100124, Peoples R China;

Beijing Univ Technol, Beijing Key Lab Microstruct & Properties Solid, Fac Mat & Mfg, Beijing 100124, Peoples R China;

Western Univ, Dept Chem, 1151 Richmond St, London, ON N6A 5B7, CanadaChinese Acad Sci, State Key Lab High Performance Ceram & Superfine, Shanghai Inst Ceram, Shanghai 200050, Peoples R China|Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R ChinaUniv Saskatchewan, Canadian Light Source Inc, Saskatoon, SK S7N2V3, CanadaSuzhou Univ Sci & Technol, Sch Mat Sci & Engn, 99 Xuefu Rd, Suzhou 215011, Peoples R ChinaChinese Acad Sci, State Key Lab High Performance Ceram & Superfine, Shanghai Inst Ceram, Shanghai 200050, Peoples R China|Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China|North China Univ Sci & Technol, Coll Mat Sci & E;

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Reconstruction-induced NiCu-based catalysts towards paired electrochemical refining

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