Li-air batteries are an extremely attractive technology for electrical energy storage,especially in long-range electric vehicles,owing to their high theoretical specific energy.However,many issues still exist before t...Li-air batteries are an extremely attractive technology for electrical energy storage,especially in long-range electric vehicles,owing to their high theoretical specific energy.However,many issues still exist before their practical realization.Herein,the sole complexity of electrode reaction in Li-air batteries is presented.And the critical components that influence the electrochemical performance of aprotic Li-air batteries operating in ambient air are discussed.These include the mechanisms and pathways of CO_(2)/Li_(2)CO_(3) and H_(2)O/LiOH,catalysts of CO_(2) reduction/evolution reactions,and reactions between the Li anode and air constituents.If these challenges can be solved,Li-air batteries will soon be realized for practical application.Some hot topics in field of Li-air batteries should be focused,such as the fundamental mechanism research referring to interfacial reactions of atmosphere components on porous electrode and Li metal anode,high-efficiency solid catalyst design,and discovery of suitable soluble redox mediators.展开更多
Outdoor activities like mountain marathons and field expeditions often occur in harsh environments where maintaining power and body temperature are crucial for survival.Warm pastes are commonly used to provide warmth ...Outdoor activities like mountain marathons and field expeditions often occur in harsh environments where maintaining power and body temperature are crucial for survival.Warm pastes are commonly used to provide warmth in cold conditions,but their potential as a portable power source has not been fully explored.This research develops an innovative approach to convert warm-paste chemical energy into electrical power for emergencies.By designing a hydrogel-based iron-air battery with a low-temperature-resistant electrolyte,we created a battery capable of operating in low temperatures.Experimental results showed the battery generating 0.98 V of voltage and 2.68 Ah of capacity.The battery can be manually assembled using original warm paste materials and connected in series to power electronic devices like mobile phones,providing a vital communication tool in emergencies.This breakthrough offers a promising solution for enhancing safety and survival during outdoor activities.展开更多
As the global demand for clean energy continues to swell,the crucial role of lithium-ion batteries,especially those with superior energy and power density,is being increasingly recognized.This emerging reality has tri...As the global demand for clean energy continues to swell,the crucial role of lithium-ion batteries,especially those with superior energy and power density,is being increasingly recognized.This emerging reality has triggered a surge of research into lithium metal anodes,a promising option for increasing the energy density of lithium-ion batteries due to their high theoretical capacity and low electrochemical potential[1].展开更多
基金This research was partially supported financially by The National Key Research and Development Program of China(2016YFB0100203)National Natural Science Foundation of China(21673116,21633003)+1 种基金Natural Science Foundation of Jiangsu Province of China(BK20160068)PAPD of Jiangsu Higher Education Insti-tutions.
文摘Li-air batteries are an extremely attractive technology for electrical energy storage,especially in long-range electric vehicles,owing to their high theoretical specific energy.However,many issues still exist before their practical realization.Herein,the sole complexity of electrode reaction in Li-air batteries is presented.And the critical components that influence the electrochemical performance of aprotic Li-air batteries operating in ambient air are discussed.These include the mechanisms and pathways of CO_(2)/Li_(2)CO_(3) and H_(2)O/LiOH,catalysts of CO_(2) reduction/evolution reactions,and reactions between the Li anode and air constituents.If these challenges can be solved,Li-air batteries will soon be realized for practical application.Some hot topics in field of Li-air batteries should be focused,such as the fundamental mechanism research referring to interfacial reactions of atmosphere components on porous electrode and Li metal anode,high-efficiency solid catalyst design,and discovery of suitable soluble redox mediators.
基金supported by the National Key Research and Development Program of China(2022YFB2502104)the National Natural Science Foundation of China(22179059,22239002,22209070,and 22409086)+2 种基金Science and Technology Innovation Fund for Emission Peak and Carbon Neutrality of Jiangsu Province(BK20231512 and BK20220034)the Natural Science Foundation of Jiangsu Province(BK20241208)the Jiangsu Funding Program for Excellent Postdoctoral Talent(2024ZB287)。
文摘Outdoor activities like mountain marathons and field expeditions often occur in harsh environments where maintaining power and body temperature are crucial for survival.Warm pastes are commonly used to provide warmth in cold conditions,but their potential as a portable power source has not been fully explored.This research develops an innovative approach to convert warm-paste chemical energy into electrical power for emergencies.By designing a hydrogel-based iron-air battery with a low-temperature-resistant electrolyte,we created a battery capable of operating in low temperatures.Experimental results showed the battery generating 0.98 V of voltage and 2.68 Ah of capacity.The battery can be manually assembled using original warm paste materials and connected in series to power electronic devices like mobile phones,providing a vital communication tool in emergencies.This breakthrough offers a promising solution for enhancing safety and survival during outdoor activities.
文摘As the global demand for clean energy continues to swell,the crucial role of lithium-ion batteries,especially those with superior energy and power density,is being increasingly recognized.This emerging reality has triggered a surge of research into lithium metal anodes,a promising option for increasing the energy density of lithium-ion batteries due to their high theoretical capacity and low electrochemical potential[1].
