论文标题
TA-TAS2整体催化剂，具有鲁棒和金属界面，用于上氢的进化
A Ta-TaS2 monolithic catalyst with robust and metallic interface for superior hydrogen evolution
论文作者
论文摘要
在我们努力实现全球碳中立性时，使用高活性和健壮的催化剂对于通过水电解产生绿色氢至关重要。目前，铂金等高贵金属用于氢进化反应（她），但在较大的电流密度下遭受稀缺，高价，不满意的性能和稳定性，从而限制了它们的大规模实施。在这里，我们报告了由金属二硫化物（例如TAS2）催化剂组成的一种新型整体催化剂（MC）的合成，该催化剂通过较强的共价键垂直粘结到同一金属的导电底物。这些功能为MC提供了机械稳健且在零电阻界面接近零的电阻界面，从而使她的出色性能包括快速充电和出色的耐用性，以及低电势的398 mV，以达到行业所要求的2,000 MA CM-2的电流密度。 TA TAS2 MC在200小时的当前密度运行200小时后具有可忽略的性能衰减。鉴于其独特的界面和具有相同结构的金属元素的各种选择，除催化外，这种单片材料可能还具有广泛的用途。
The use of highly active and robust catalysts is crucial for producing green hydrogen by water electrolysis as we strive to achieve global carbon neutrality. Noble metals like platinum are currently used in industry for the hydrogen evolution reaction (HER), but suffer from scarcity, high price and unsatisfied performance and stability at large current density, restricting their large scale implementations. Here we report the synthesis of a new type of monolithic catalyst (MC) consisting of a metal disulfide (e.g., TaS2) catalyst vertically bonded to a conductive substrate of the same metal by strong covalent bonds. These features give the MC a mechanically robust and electrically near zero resistance interface, leading to an outstanding HER performance including rapid charge transfer and excellent durability, together with a low overpotential of 398 mV to achieve a current density of 2,000 mA cm-2 as required by industry. The Ta TaS2 MC has a negligible performance decay after 200 h operation at large current densities. In light of its unique interface and the various choice of metal elements giving the same structure, such monolithic materials may have broad uses besides catalysis.
