Carbon dioxide (CO₂) is recognized as one of the most significant greenhouse gases in the atm.As the largest emitter of CO₂ globally, China encounters considerable challenges in mitigating its emissions.The International Energy Agency (IEA) has emphasized that achieving net-zero CO₂ emissions is unattainable without the implementation of CO₂ geol. storage technol.Through a systematic data anal. of the distribution of CO₂ geol. storage projects and carbon storage policies in China and internationally, this paper introduces China′s efforts to promote the development of CO₂ geol. storage projects through the formulation of policies, participation in international cooperation, and cooperation among enterprises.The article is the first to propose that CO₂ geol. storage development in China should be tailored to different provinces by grasping the characteristics and strategic layout of the development of CO₂ geol. storage technologies at home and abroad.Using Shaanxi, a province rich in resources, and Hunan, a resource-scarce province, as representative examples, it suggests that each province should adapt to its local characteristics for CO₂ geol. storage.This new approach holds significant implications for determining key areas of focus, development directions, and formulating related policies for CO₂ geol. storage in the country.

01 Dec 2025·Nano-Micro Letters

Cationic Adsorption-Induced Microlevelling Effect: A Pathway to Dendrite-Free Zinc Anodes

Article

Author: Li, Le ; Tian, Siyu ; Zhou, Jiang ; Ding, Yiqing ; Zhou, Peng ; Lu, Bingan ; Tang, Yan ; Jiang, Long

AbstractDendrite growth represents one of the most significant challenges that impede the development of aqueous zinc-ion batteries. Herein, Gd3+ ions are introduced into conventional electrolytes as a microlevelling agent to achieve dendrite-free zinc electrodeposition. Simulation and experimental results demonstrate that these Gd3+ ions are preferentially adsorbed onto the zinc surface, which enables dendrite-free zinc anodes by activating the microlevelling effect during electrodeposition. In addition, the Gd3+ additives effectively inhibit side reactions and facilitate the desolvation of [Zn(H2O)6]2+, leading to highly reversible zinc plating/stripping. Due to these improvements, the zinc anode demonstrates a significantly prolonged cycle life of 2100 h and achieves an exceptional average Coulombic efficiency of 99.72% over 1400 cycles. More importantly, the Zn//NH4V4O10 full cell shows a high capacity retention rate of 85.6% after 1000 cycles. This work not only broadens the application of metallic cations in battery electrolytes but also provides fundamental insights into their working mechanisms.

01 Oct 2025·Fuel

Nitrogen-doped graphite supported cobalt nanoparticles as excellent ORR/OER/HER trifunctional electrocatalysts

Author: Yi, Qingfeng ; Tang, Xiangmei ; Li, Guang ; Fan, Wenxuan

Non precious metal catalysts (NMCs) are considered to have great potential for applications in oxygen reduction reaction (ORR) and water splitting reaction (OER and HER).Compared with traditional precious metal catalysts, NMCs have the characteristics of low cost, better catalytic performance, wider applicability, and better durability.This article reports a facile method for preparing layered Co-N-C catalysts by simple ball milling and pyrolysis of a mixture of graphite, ammonium carbonate, melamine and cobalt phthalocyanine.The synthesized nanoCo@bmGr and nanoCo@bmGr-EG samples exhibit excellent performance in ORR, OER and HER.For ORR in alk. electrolyte, the nanoCo@bmGr and nanoCo@bmGr-EG present very close Tafel slopes to Pt/C catalyst.For OER under alk. condition, the nanoCo@bmGr and nanoCo@bmGr-EG exhibit smaller Tafel slopes than IrO₂ catalyst, and at a c.d. of 10 mA•cm^-2, their p.d. with IrO₂ is only 50 and 70 mV resp.For the chronopotentiometric tests of OER at current densities of 20 and 30 mA•cm^-2, the two samples show lower potentials than IrO₂.In HER testing, nanoCo@bmGr and nanoCo@bmGr-EG display very similar onset potentials and Tafel slopes to Pt/C.This work provides a simple approach for preparing catalysts with good catalytic activity for ORR/OER/HER.

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