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1.
<正>1. Nuclear energy as primary energy and hydrogen energy as secondary energy Fossil resources are unevenly distributed on the earth and are a finite source of primary energy that is widely used in industry(factories, etc.), transportation (automobiles, etc.), and energy conversion (power generation, etc.). It must be said that the mass consumption of fossil resources is non-sustainable.  相似文献   

2.
<正>The use of artificial intelligence(AI) is escalating rapidly in most applications nowadays, thanks to breakthroughs in biology and mathematics. Novel hardware systems are greatly needed to meet the requirements of AI, which include computing capacity and energy efficiency. One of the major aims of AI is to mimic the functions of the human brain, which are enabled by the massive interconnection of neurons. For example, the visual cortex is the region of the brain that processes visual in...  相似文献   

3.
Lignin is the most abundant aromatic polymer in nature, which is rich in a large number of benzene ring structures and active functional groups. The molecular structure of lignin has unique designability and controllability, and is a class of functional materials with great application prospects in energy storage and conversion.Here, this review firstly focuses on the concept, classification, and physicochemical property of lignin. Then, the application research of lignin in the field of electro...  相似文献   

4.
<正>1. Background The need for green, low-carbon, and sustainable development has become a global consensus [1]. In China, low-carbon and green energy reformation presents many difficulties and challenges. On the one hand, as the largest energy producer and consumer in the world, China is facing the serious problem of carbon dioxide(CO2) emissions caused by large-scale coal-based fossil energy exploitation [2,3]. On the other hand,  相似文献   

5.
The decreasing cost of solar photovoltaics(PVs) and battery storage systems is driving their adoption in the residential distribution system, where more consumers are becoming prosumers. Accompanying this trend is the potential roll-out of home energy management systems(HEMSs), which provide a means for prosumers to respond to externalities such as energy price, weather, and energy demands. However, the economic operation of prosumers can affect grid security, especially when energy prices are e...  相似文献   

6.
The National Standardization Technical Committee on Energy Fundamentals and Management (SAC/TC 20) was established in May, 1981. As a technological organization, SAC/TC 20 is responsible for the national energy conservation and common, fundamental as well as comprehensive energy standardization, and is in charge of counterpart work of standardization technology in the field. SAC/TC 20 is under the direct leadership of SAC and its secretariat is affiliated at CNIS.  相似文献   

7.
Water splitting is an effective strategy to produce renewable and sustainable hydrogen energy. Especially,seawater splitting, avoiding use of the limited freshwater resource, is more intriguing. Nowadays, electrocatalysts explored for hydrogen evolution reaction(HER) and oxygen evolution reaction(OER) using natural seawater or saline electrolyte have been increasingly reported. To better understand the current status and challenges of the electrocatalysts for HER and OER from seawater, we compre...  相似文献   

8.
<正>1. Introduction Carbon neutrality is an important strategy to address the acute problems of resource and environmental constraints. Currently,afforestation, energy conservation, emissions reduction, and other measures have been adopted to offset the total amount of carbon dioxide and other greenhouse gas emissions generated by countries, businesses, products, activities, or individuals,  相似文献   

9.
<正>With the development of human society and the depletion of non-renewable energy sources, alternate energy resources are becoming an urgent demand. In recent years, energy storage and conversion devices have drawn wide attention as a bridge between sustainable energy sources and daily life.  相似文献   

10.
<正>Thus far, the 21st century has witnessed steady growth in China’s renewable energy capacity, especially in recent years, amid the country’s efforts to achieve a peak in carbon dioxide emissions and carbon neutrality. As of the end of June 2022, for example,China’s accumulative installed solar energy has risen to around 336 GW. However, reaching net-zero emissions globally is a critical and formidable goal [1],  相似文献   

11.
High-performance lithium-ion batteries(LIB) are important in powering emerging technologies. Cathodes are regarded as the bottleneck of increasing battery energy density, among which layered oxides are the most promising candidates for LIB. However, a limitation with layered oxides cathodes is the transition metal and Li site mixing, which significantly impacts battery capacity and cycling stability. Despite recent research on Li/Ni mixing, there is a lack of comprehensive understanding of the o...  相似文献   

12.
<正>At the beginning of June,the international workshop on energy savings and management and green consumption was celebrated in Beijing as part of the 8th Clean Energy Ministerial.Together with energy policies,products and technologies,energy internet is becoming one of the key topics in energy conservation and management sector.  相似文献   

13.
Assessment of wind energy potential in China   总被引:1,自引:0,他引:1  
In this paper, China wind atlas is made by numerical simulating and the wind energy potential in China is calculated. The model system for wind energy resource assessment is set up based on Canadian Wind Energy Simulating Toolkit (WEST) and the simulating method is as follow. First, the weather classes are obtained depend on meteorological data of 30 years. Then, driven by the initial meteorological field produced by each weather class, the mesosclae model runs for the distribution of wind energy resources according each weather class condition one by one. Finally, averaging all the modeling output weighted by the occurrence frequency of each weather class, the annual mean distribution of wind energy resources is worked out. Compared the simulated wind energy potential with other results from several activities and studies for wind energy resource assessment, it is found that the simulated wind energy potential in mainland of China is 3 times that from the second and the third investigations for wind energy resources by CMA, and is similar to the wind energy potential obtained by NREL in SWERA project. The simulated offshore wind energy potential of China seems smaller than the true value. Although there is difference in method and conclusion for wind energy resource assessment by different institutes, the important conclusion accepted by the all is that China has rich wind energy resources. According to the simulated results of CMA and considering lots of limited factors to wind energy development, the final conclusion can be obtained that the wind energy availability in China is 700-1200 GW, in which 600-1000 GW is in mainland and 100-200 GW is on offshore, and wind power will become the important part of energy composition in future.  相似文献   

14.
<正>1. The crucial role of heating decarbonization in achieving carbon neutrality in China by 2060The decarbonization of heating, in both buildings and industries, presents a major challenge and opportunity for China if the nation is going to meet its 2060 commitment to carbon neutrality.Currently, as shown in Fig. 1(a)[1], the buildings and industrial sectors share the largest proportion (more than 70%) of end-use energy demand in China. In the buildings sector, heating accounts for half o...  相似文献   

15.
The iron and steel industry generally features the characteristics of large volume of energy consumption, multiple sorts of energy medium, complex secondary conversion, more recyclable extra energy, and the energy management of the field may involve the entire personnel, process and system, covering all links from designing, purchasing, energy storage, processing and conversion, distribution, energy use and extra energy recycling. The implementation guidelines summarizes the energy management experience and results and provide a systematic approach for the implementation of GB/T 23331-2012 and GB/T 29456-2012, sharing svstematic instructions and suggestions for the implementing paths and methods of creating, implementing, maintaining and improving the energy management system (EnMS) at the enterprise level.  相似文献   

16.
<正>1. Introduction To date, the application of lithium-ion batteries(LIBs) has been expanded from traditional consumer electronics to electric vehicles(EVs), energy storage, special fields, and other application scenarios. The production capacity of LIBs is increasing rapidly, from26 GW·h in 2011 to 747 GW·h in 2020, 76% of which comes from China [1]. The performance of LIBs in terms of energy density,  相似文献   

17.
In this article, the basic concept, constitute and brief development history of Nuclear Explosions Fusion Power Plant is introduced. A series of technique is put forward to solve the implement safety of nuclear explosion; the designs of nuclear devicein deuteriumtype and the reclamation of nuclear fuel are put forward. The technique possibility of power station is analyzed, and the prospect of all kinds of nuclear energy project to provide energy of the mankind future are compared.  相似文献   

18.
Research on two-dimensional(2D) materials is one of the most active fields in materials science and nanotechnology. Among the members of the 2D family, layered hydroxides(LHs) represent an exceptional case of study due to their unparalleled chemical versatility which allows the modulation of their physicochemical properties at will. Nowadays, LHs based on earth-abundant metals are key materials in the areas of energy storage and conversion, hybrid materials or magnetism. ɑ-Co hydroxides(Simonkol...  相似文献   

19.
The energy-saving management of China' s cement industry has gradually improved in recent years; however, cement industry still faces big pressure of facilitating energy conservation and emission reduction. Based on the current development of cement industry, the paper summarizes and analyzes the application and promotion of energy management system (EnMS) standardization in cement industry, then gives a brief introduction to the implementation of related standards and at last explores the positive function of energy management system in enhancing enterprises' energy management and improving energy performance.  相似文献   

20.
The renewable energy will play significant role in the world primary energy consumption in the future. Geothermal energy is immense with 5000 EJ/yr of technical potential; however, its utilization has been limited to areas with special geological conditions. Geothermal heat pumps (GHPs) are one of the fastest growing applications of renewable energy in the world with annual increases of 10% and much faster in China. Its main advantage is that it uses normal ground or groundwater temperatures (between about 5 and 30℃), which are available in all countries of the world and make geothermal more attractive and practicable. With high Coefficient of Performance (COP) up to 6, GHPs make efficiency of primary energy more than 240% with assumed a 40% of electricity generation efficiency, which means energy savings and CO2 emission reduction. In this paper geothermal and GHP technology is introduced and the energy savings and CO2 emission reduction by GHPs are analyzed.  相似文献   

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