News on China's scientific and technological development.

Wuhun said:

Renshine has achieved world record 29% steady-state power conversion efficiency for perovskite solar cell, breaking their own record from 2022. Literally all the perovskite cell efficiency previous world records belong to them. They also achieved the perovskite module efficiency world record at 24.5% in November 2022. In the next few years, they will build several GW-level production lines of perovskite cell modules.

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Renshine was founded by Professor Tan Hairen

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View attachment 104427

The other top perovskite tech company are UtmoLight

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and Microquanta

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.

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FairAndUnbiased said:

I know something about this. Do they still use the organo-lead halide perovskite? These were the highest efficiency ones from what I understand. The big problem with the organic based perovskites is extreme water reactivity leading to degradation back into lead halide + organic halide. Even simple vapor diffusion over a "waterproof" membrane can cause degradation over time.

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Wuhun said:

Renshine has achieved world record 29% steady-state power conversion efficiency for perovskite solar cell, breaking their own record from 2022. Literally all the perovskite cell efficiency previous world records belong to them. They also achieved the perovskite module efficiency world record at 24.5% in November 2022. In the next few years, they will build several GW-level production lines of perovskite cell modules.

Please, Log in or Register to view URLs content!

Renshine was founded by Professor Tan Hairen

Please, Log in or Register to view URLs content!

View attachment 104427

The other top perovskite tech company are UtmoLight

Please, Log in or Register to view URLs content!

and Microquanta

Please, Log in or Register to view URLs content!

.

Click to expand...

Abstract​

Constructing multifunctional material toward advanced electromagnetic interference (EMI) shielding has become a development trend. Carbon-based foams with excellent EMI shielding performance and structural stability for various environments are being widely studied. Here, an oriented pore structure was assembled with a carbon-based conductive skeleton, consisting of single-walled carbon nanotubes (SWNTs) and two-dimensional reduced graphene oxide (RGO), for facilitating the electromagnetic wave (EMW) to be multilevelly reflected in the confined space. In addition, magnetic NiCo nanoparticles were introduced to further improve the shielding performance by enhancing the magnetic loss. The as-prepared NiCo@RGO/SWNTs foam (NiCo@RSF) exhibited an exceptional EMI shielding effectiveness (SE) of 105 dB at the whole X band (8.2–12.4 GHz) with an ultralow density (0.0135 g cm−3). Moreover, the foam possessed extraordinary heat insulation and flame-retardant properties. Overall, the lightweight multifunctional foam with an oriented pore structure is thus promising for applications in advanced EMI shielding and other specific areas.

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随着科学技术的迅猛发展,电磁辐射污染问题越来越受到人们的重视和关注。电磁屏蔽技术在电磁辐射污染控制方面发挥重要的作用，开发具有优异电磁屏蔽性能的电磁屏蔽材料是实现有效电磁屏蔽的关键。目前，传统电磁屏蔽材料在低密度、高电导率、高力学性能、隔热性能和阻燃性能等方面存在不足，难以满足未来高科技时代的实际应用要求，研制先进的多功能电磁屏蔽材料已成为一种发展趋势。因此，开发适用于不同应用环境的多功能电磁干扰屏蔽材料具有重要的应用价值。

近期，中科院苏州纳米所李清文团队采用定向冷冻干燥和水热工艺相结合的策略制备了具有定向孔结构的多功能钴镍负载石墨烯/碳纳米管泡沫（NiCo@RSF）。其中，定向孔结构的孔壁由RGO和SWNTs均匀混合形成的“钢筋混凝土”结构组成，NiCo纳米颗粒均匀地负载在RSF骨架上。得益于RGO和SWNTs形成的三维导电网络的介电损耗作用、NiCo磁性纳米粒子的磁损耗作用和定向孔结构产生的电磁波在限域空间的多重反射吸收，所制备的NiCo@RSF在X波段的电磁屏蔽性能高达105 dB，SSE/t可达18711 dB？cm-2 g-1。同时，NiCo@RSF还表现出优异的隔热和阻燃性能，呈现出多功能特性。该研究工作为轻量化碳基电磁屏蔽材料的设计提供了有效指导。

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