21:I[432972,["/_next/static/chunks/bb923814e1f4d2e9.js","/_next/static/chunks/dd3ee9f5b7716ca6.js","/_next/static/chunks/4204a0ae82542ca8.js","/_next/static/chunks/30036bedc5269936.js","/_next/static/chunks/6e1aa89a642f40be.js","/_next/static/chunks/cd5e572bc3e4eb92.js","/_next/static/chunks/8ffd0b71567920d8.js","/_next/static/chunks/67ea6dfd21f16c5f.js","/_next/static/chunks/24eb4379f68013fd.js","/_next/static/chunks/b8cd775ffdf935bd.js","/_next/static/chunks/983103cd9eb7b428.js","/_next/static/chunks/d4ac9dcf27f6ff52.js","/_next/static/chunks/294b9525248c8e5f.js"],"default"] 22:T452,Flexible power sources are critical to achieve the wide adoption of portable and wearable electronics. Herein, a facile and general strategy of fabricating a fibrous electrode was developed by 3D active coating technology, in which a stepping syringe with electrode paste was synchronously injected onto a rotating conductive wire, distinguished from the conventional direct-write 3D printing without a current collector. A series of such electrodes with different coating weight can be fabricated accurately and efficiently by adjusting critical process parameters following a set of derived equations. The demonstrated fibrous Zn-MnO₂ battery with a high commercial ε-MnO₂ loading of 14.9 mg cm^-2 onto a stainless steel wire shows a reasonable energy density of 108 mWh cm^-3, while the fiber-shaped supercapacitor with commercial porous graphene exhibits a high capacitance of 142.9 F g^-1 and good durability for bending 10,000 cycles. This work constructs a bridge between materials and fiber-shaped electrodes for flexible energy storage devices.23:T561,Abstract Developing metal‐free carbon catalysts is critical to achieve the electrosynthesis of hydrogen peroxide (H 2 O 2 ) via two‐electron oxygen reduction reaction (2e − ORR) using seawater as electrolyte. Herein, N‐rich doped carbon (NC) is synthesized by directly pyrolyzing guanine as both N and C sources, which can facilitate the formation of ultrahigh‐N dopant (up to 33.89 at.%), and their ratios. The NC obtained at 700 °C with hydrogenated pyridine‐N and pyrrole‐N (3:2) dopants exhibits a superior selectivity of H 2 O 2 (up to 96%), high mass activity of 545.5 A g −1 at 0.2 V versus RHE and stable production of H 2 O 2 with 16.8 in 0.5 M NaCl. In situ Fourier transform infrared spectrum analysis proves that hydrogenated pyridine‐N and pyrrole‐N dopants play a critical role in constructing metal‐free active sites for the synthesis of H 2 O 2 . Meanwhile, theoretical calculations further reveal that compared to non‐hydrogenated N dopants, hydrogenated pyridine and pyrrole N can tune the projected density of states of 2p z orbitals of their adjacent carbon atoms approaching Fermi Level, enhancing * OOH to H 2 O 2 through 2e − ORR rather than H 2 O via 4e − ORR. This work provides new insights for developing metal‐free catalysts for efficient electrosynthesis of H 2 O 2 using seawater resources as promising electrolytes.

#	Concept	H-Index	Publications	Citations
1	Engineering	2	2	57
2	Chemical Engineering	2	2	57
3	Materials Science	2	2	57
4	Chemistry	1	1	19
5	Batteries	1	1	38

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