Tamboli Mohaseen S, Patil Supriya A, Tamboli Asiya M, Patil Santosh S, Truong Nguyen Tam Nguyen, Lee Kiyoung, Praveen C S, Shrestha Nabeen K, Park Chinho, Kale Bharat B
Korea Institute of Energy Technology (KENTECH), 200 Hyeokshin-ro, Naju, Jeollanam-do 58330, Republic of Korea.
Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea.
Dalton Trans. 2022 Apr 12;51(15):6027-6035. doi: 10.1039/d2dt00032f.
Developing efficient, low-cost, and environment-friendly electrocatalysts for hydrogen generation is critical for lowering energy usage in electrochemical water splitting. Moreover, for commercialization, fabricating cost-efficient, earth-abundant electrocatalysts with superior characteristics is of urgent need. Towards this endeavor, we report the synthesis of PANI-MnMoO nanocomposites using a hydrothermal approach and an polymerization method with various concentrations of MnMoO. The fabricated nanocomposite electrocatalyst exhibits bifunctional electrocatalytic activity towards the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) at a lower overpotential of 410 mV at 30 mA cm and 155 mV at 10 mA cm, respectively in an alkaline electrolyte. Furthermore, while showing overall water splitting (OWS) performance, the optimized PM-10 (PANI-MnMoO) electrode reveals the most outstanding OWS performance with a lower cell voltage of 1.65 V ( RHE) at a current density of 50 mA cm with an excellent long-term cell resilience of 24 h.
开发高效、低成本且环境友好的析氢电催化剂对于降低电化学水分解中的能源消耗至关重要。此外，为了实现商业化，迫切需要制备具有卓越特性且成本效益高、储量丰富的电催化剂。为此，我们报道了采用水热法和聚合方法，使用不同浓度的MnMoO合成PANI-MnMoO纳米复合材料。所制备的纳米复合电催化剂在碱性电解质中，对析氧反应（OER）和析氢反应（HER）分别在30 mA cm时410 mV和10 mA cm时155 mV的较低过电位下表现出双功能电催化活性。此外，在展现全水解（OWS）性能时，优化后的PM-10（PANI-MnMoO）电极在50 mA cm的电流密度下具有1.65 V（相对于可逆氢电极）的较低电池电压，显示出最出色的OWS性能，并且具有长达24小时的出色长期电池稳定性。
