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Zn–H+ Battery, Versatile Energy Conversion Equipment for Electricity Generation and H2 Production Simultaneously
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2019-05-22 00:00:00 , DOI: 10.1021/acssuschemeng.9b02048 XiaoXuan Wang 1 , XinXin Xu 1 , Ning Liu 1 , Fa-Nian Shi 2 , GuiMei Shi 2
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2019-05-22 00:00:00 , DOI: 10.1021/acssuschemeng.9b02048 XiaoXuan Wang 1 , XinXin Xu 1 , Ning Liu 1 , Fa-Nian Shi 2 , GuiMei Shi 2
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Zn–H+ battery is a new energy conversion device, which can act as an electricity provider as well as an H2 generator. In general, the activity of the hydrogen evolution reaction (HER) electrocatalyst determines the performance of the Zn–H+ battery to a great extent. In our attempt, an inexpensive and effective HER electrocatalyst was synthesized successfully. In this electrocatalyst, the Cu based coordination complex loads onto filter paper derived three-dimensional mesoporous carbon paper homogeneously. Compared with traditional powder electrocatalysts, the bulky appearance of this electrocatalyst makes it possible that it can be employed as a binder-free electrode directly. In the acidic electrolyte, it exhibits perfect electrocatalytic activity. The η10 potential of this electrocatalyst is only 91 mV. This electrocatalyst also shows excellent durability after long time HER tests. With this electrocatalyst and Zn plate as cathode and anode, respectively, a Zn–H+ battery was assembled. The open circuit voltage of this battery is 1.18 V. Its peak power density arrives at 65.6 mW·cm–2. When discharged at 10 mA·cm–2, the voltage of this battery keeps stable for 10 h. In this process, the specific capacity and energy density of Zn–H+ battery are 768 mAh·g–1 and 875 Wh·kg–1, respectively. At this current density, its H2 production rate arrives at 578 μmol in 80 min, with a Faradaic efficiency 96.3%. This work opens a new research field for HER.
中文翻译：
Zn-H +电池，用于发电和H 2同时生产的多功能能量转换设备
Zn–H +电池是一种新的能量转换装置，既可以充当电力供应商，也可以充当H 2发生器。通常，析氢反应（HER）电催化剂的活性在很大程度上决定了Zn-H +电池的性能。在我们的尝试中，成功地合成了廉价且有效的HER电催化剂。在该电催化剂中，Cu基配位络合物均匀地负载到滤纸上衍生的三维中孔碳纸上。与传统的粉末状电催化剂相比，这种电催化剂的大体积外观使其可以直接用作无粘结剂的电极。在酸性电解质中，它表现出完美的电催化活性。η该电催化剂的10电位仅为91 mV。经过长时间的HER测试后，该电催化剂也显示出出色的耐久性。用该电催化剂和Zn板分别作为阴极和阳极，组装了Zn–H +电池。该电池的开路电压为1.18V。其峰值功率密度达到65.6 mW·cm –2。当以10 mA·cm –2放电时，该电池的电压保持稳定10小时。在此过程中，Zn–H +电池的比容量和能量密度分别为768 mAh·g –1和875 Wh·kg –1。在此电流密度下，其H 280分钟内生产率达到578μmol，法拉第效率为96.3％。这项工作为HER开辟了一个新的研究领域。
更新日期：2019-05-22
中文翻译：
Zn-H +电池，用于发电和H 2同时生产的多功能能量转换设备
Zn–H +电池是一种新的能量转换装置，既可以充当电力供应商，也可以充当H 2发生器。通常，析氢反应（HER）电催化剂的活性在很大程度上决定了Zn-H +电池的性能。在我们的尝试中，成功地合成了廉价且有效的HER电催化剂。在该电催化剂中，Cu基配位络合物均匀地负载到滤纸上衍生的三维中孔碳纸上。与传统的粉末状电催化剂相比，这种电催化剂的大体积外观使其可以直接用作无粘结剂的电极。在酸性电解质中，它表现出完美的电催化活性。η该电催化剂的10电位仅为91 mV。经过长时间的HER测试后，该电催化剂也显示出出色的耐久性。用该电催化剂和Zn板分别作为阴极和阳极，组装了Zn–H +电池。该电池的开路电压为1.18V。其峰值功率密度达到65.6 mW·cm –2。当以10 mA·cm –2放电时，该电池的电压保持稳定10小时。在此过程中，Zn–H +电池的比容量和能量密度分别为768 mAh·g –1和875 Wh·kg –1。在此电流密度下，其H 280分钟内生产率达到578μmol，法拉第效率为96.3％。这项工作为HER开辟了一个新的研究领域。
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