01
2021-11
The race for solid-state batteries has begun—who will emerge as the champion?
Over the past few years, power battery technology has made rapid strides, yet safety concerns and range anxiety remain intractable challenges for the industry. Today, electric vehicles are experiencing strong momentum, with sales hitting record highs time and again. However, safety risks associated with batteries continue to surface one after another. In fact, the safety risks of electric vehicles can largely be attributed to liquid lithium-ion batteries. Once a battery is subjected to compression or impact, its separator may rupture, leading to a short circuit between the positive and negative electrodes. At the same time, the lithium battery generates significant heat internally, and combined with the flammable organic solvents in the liquid electrolyte, this can result in battery fires—or even explosions. Solid-state batteries hold promise for completely resolving these safety issues. In solid-state batteries, the positive and negative electrodes are less likely to short-circuit; moreover, the solid electrolyte is non-flammable, non-volatile, and even capable of withstanding high temperatures. As a result, under similar extreme conditions, solid-state batteries won't catch fire or explode. Addressing range anxiety essentially relies on boosting the energy density of batteries. According to the "Technology Roadmap for Energy-Saving and New Energy Vehicles," the target energy density for power batteries by 2025 is 400 Wh/kg, and by 2030, it’s set at 500 Wh/kg. To achieve the 2030 target, the current liquid lithium-ion battery technology path may struggle to meet the demand. Even the existing ceiling of 350 Wh/kg is proving difficult to break through. In contrast, solid-state batteries can easily surpass the 350 Wh/kg mark in terms of energy density. Furthermore, solid-state batteries boast an exceptionally long lifespan: after 30 years of use, they still retain more than 90% of their original capacity and can be recycled for further use. Thus, solid-state batteries outperform lithium-ion batteries in virtually every aspect.
The race for solid-state batteries has begun—who will emerge as the champion?
22
2021-09
“5G + Smart Streetlights” Boost China’s Smart City Development
As early as 2008, IBM introduced the concept of “Smart Planet,” and in 2010, it proposed the vision of “Smart Cities.” Governments around the world have been actively promoting the construction and development of smart cities and have achieved remarkable results.
“5G + Smart Streetlights” Boost China’s Smart City Development